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Lake Cochituate Weather Records (USC00194012)

Record envelope, standing records and threshold days for Lake Cochituate (USC00194012), Massachusetts, United States, with 76 years of record.

Key Facts for Lake Cochituate

  • Lake Cochituate (USC00194012) is a weather station in Massachusetts, United States at 42.32 latitude and -71.38 longitude, 46 m (151 ft) above sea level.
  • The station reports from 1885 to 1960, 76 years of record.
  • 1,464 records set at Lake Cochituate still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Lake Cochituate tied a daily record low maximum temperature of 15.0 C (59.0 F) on 20 September 1960.

About the Station

  • Location: Massachusetts, United States, 42.32 latitude, -71.38 longitude.
  • Elevation: 46 m (151 ft).
  • Period of record: 1885 to 1960, 76 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Lake Cochituate, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lake Cochituate. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lake Cochituate. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lake Cochituate, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.1 C (70.0 F)-33.3 C (-27.9 F)n/an/a
Feb21.1 C (70.0 F)-33.3 C (-27.9 F)n/an/a
Mar29.4 C (84.9 F)-26.1 C (-15.0 F)n/an/a
Apr33.3 C (91.9 F)-13.9 C (7.0 F)n/an/a
May38.3 C (100.9 F)-6.1 C (21.0 F)n/an/a
Jun40.0 C (104.0 F)-1.1 C (30.0 F)n/an/a
Jul40.6 C (105.1 F)3.3 C (37.9 F)n/an/a
Aug38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Sep39.4 C (102.9 F)-5.6 C (21.9 F)n/an/a
Oct33.3 C (91.9 F)-10.6 C (12.9 F)n/an/a
Nov27.8 C (82.0 F)-20.0 C (-4.0 F)n/an/a
Dec20.6 C (69.1 F)-31.7 C (-25.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lake Cochituate by the year they were set 1,464 records at Lake Cochituate still stand. 1894 holds the most, with 40. 0102030401885: 311888: 231891: 41893: 221894: 401895: 351896: 291897: 191898: 311899: 241900: 241901: 161902: 151903: 301904: 211905: 171906: 191907: 211908: 121909: 191910: 171911: 271912: 231913: 231914: 241915: 241916: 301917: 211918: 241919: 231920: 321921: 281922: 161923: 301924: 161925: 251926: 201927: 171928: 121929: 201930: 231931: 191932: 191933: 231934: 221935: 161936: 181937: 221938: 191939: 101940: 271941: 91942: 151943: 211944: 131945: 251946: 191947: 161948: 261949: 191950: 251951: 141952: 111953: 141954: 211955: 151956: 171957: 261958: 111959: 211960: 4188518981906191419221930193819461954
1,464 records at Lake Cochituate still stand. 1894 holds the most, with 40.
Standing records at Lake Cochituate by the year they were set
Year setStanding records
188531
188823
18914
189322
189440
189535
189629
189719
189831
189924
190024
190116
190215
190330
190421
190517
190619
190721
190812
190919
191017
191127
191223
191323
191424
191524
191630
191721
191824
191923
192032
192128
192216
192330
192416
192525
192620
192717
192812
192920
193023
193119
193219
193323
193422
193516
193618
193722
193819
193910
194027
19419
194215
194321
194413
194525
194619
194716
194826
194919
195025
195114
195211
195314
195421
195515
195617
195726
195811
195921
19604

All-Time Record Progression

1 new records
When Lake Cochituate set new all-time records 1 all-time records were set at Lake Cochituate between 28 January 1935 and 28 January 1935. Each dot is a new record. Record low minimum temperature28 January 1935: Record low minimum temperature -33.3 C (-27.9 F)1935
1 all-time records were set at Lake Cochituate between 28 January 1935 and 28 January 1935. Each dot is a new record.
When Lake Cochituate set new all-time records
DateKindDetail
1935-01-28Record low minimum temperatureRecord low minimum temperature -33.3 C (-27.9 F)

Wettest Day of Each Month

Oct: 176.5 mm (6.9 in)
Record daily precipitation for each month at Lake Cochituate The wettest day on record for each calendar month at Lake Cochituate. The most was 176.5 mm (6.9 in) on 14 October 1895. 050100150200 Jan: 66.8 mm (2.6 in), 9 January 1935 Jan Feb: 125.7 mm (4.9 in), 13 February 1886 Feb Mar: 96.5 mm (3.8 in), 2 March 1947 Mar Apr: 114.0 mm (4.5 in), 29 April 1904 Apr May: 87.4 mm (3.4 in), 29 May 1906 May Jun: 135.4 mm (5.3 in), 21 June 1922 Jun Jul: 107.4 mm (4.2 in), 24 July 1938 Jul Aug: 137.2 mm (5.4 in), 19 August 1955 Aug Sep: 175.3 mm (6.9 in), 12 September 1954 Sep Oct: 176.5 mm (6.9 in), 14 October 1895 Oct Nov: 98.6 mm (3.9 in), 12 November 1947 Nov Dec: 101.6 mm (4.0 in), 18 December 1888 Dec
The wettest day on record for each calendar month at Lake Cochituate. The most was 176.5 mm (6.9 in) on 14 October 1895.
Record daily precipitation for each month at Lake Cochituate
MonthRecord daily precipitation (mm)Date
Jan66.8 mm (2.6 in)9 January 1935
Feb125.7 mm (4.9 in)13 February 1886
Mar96.5 mm (3.8 in)2 March 1947
Apr114.0 mm (4.5 in)29 April 1904
May87.4 mm (3.4 in)29 May 1906
Jun135.4 mm (5.3 in)21 June 1922
Jul107.4 mm (4.2 in)24 July 1938
Aug137.2 mm (5.4 in)19 August 1955
Sep175.3 mm (6.9 in)12 September 1954
Oct176.5 mm (6.9 in)14 October 1895
Nov98.6 mm (3.9 in)12 November 1947
Dec101.6 mm (4.0 in)18 December 1888

Period of Record Coverage

1885 to 1960
Days with data per year at Lake Cochituate 71 years of record at Lake Cochituate, 1885 to 1960. 8 years have data for under 90 percent of days and are left out of rankings: 1888, 1891, 1896, 1912, 1928, 1929, 1946, 1960. 1885: 360 of 365 days1888: 301 of 366 days1891: 31 of 365 days1893: 335 of 365 days1894: 365 of 365 days1895: 335 of 365 days1896: 297 of 366 days1897: 363 of 365 days1898: 364 of 365 days1899: 363 of 365 days1900: 359 of 365 days1901: 331 of 365 days1902: 362 of 365 days1903: 361 of 365 days1904: 363 of 366 days1905: 359 of 365 days1906: 360 of 365 days1907: 357 of 365 days1908: 355 of 366 days1909: 359 of 365 days1910: 364 of 365 days1911: 360 of 365 days1912: 326 of 366 days1913: 361 of 365 days1914: 332 of 365 days1915: 361 of 365 days1916: 364 of 366 days1917: 365 of 365 days1918: 363 of 365 days1919: 362 of 365 days1920: 362 of 366 days1921: 365 of 365 days1922: 365 of 365 days1923: 365 of 365 days1924: 360 of 366 days1925: 361 of 365 days1926: 362 of 365 days1927: 353 of 365 days1928: 292 of 366 days1929: 236 of 365 days1930: 364 of 365 days1931: 365 of 365 days1932: 354 of 366 days1933: 362 of 365 days1934: 364 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 365 of 365 days1938: 364 of 365 days1939: 365 of 365 days1940: 364 of 366 days1941: 364 of 365 days1942: 363 of 365 days1943: 362 of 365 days1944: 365 of 366 days1945: 364 of 365 days1946: 303 of 365 days1947: 360 of 365 days1948: 350 of 366 days1949: 343 of 365 days1950: 364 of 365 days1951: 364 of 365 days1952: 366 of 366 days1953: 364 of 365 days1954: 365 of 365 days1955: 363 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 364 of 365 days1959: 365 of 365 days1960: 274 of 366 days1900191019201930194019501960
71 years of record at Lake Cochituate, 1885 to 1960. 8 years have data for under 90 percent of days and are left out of rankings: 1888, 1891, 1896, 1912, 1928, 1929, 1946, 1960.
Days with data per year at Lake Cochituate
YearDays with dataShare of yearComplete
188536099%Yes
188830182%No
1891318%No
189333592%Yes
1894365100%Yes
189533592%Yes
189629781%No
189736399%Yes
1898364100%Yes
189936399%Yes
190035998%Yes
190133191%Yes
190236299%Yes
190336199%Yes
190436399%Yes
190535998%Yes
190636099%Yes
190735798%Yes
190835597%Yes
190935998%Yes
1910364100%Yes
191136099%Yes
191232689%No
191336199%Yes
191433291%Yes
191536199%Yes
191636499%Yes
1917365100%Yes
191836399%Yes
191936299%Yes
192036299%Yes
1921365100%Yes
1922365100%Yes
1923365100%Yes
192436098%Yes
192536199%Yes
192636299%Yes
192735397%Yes
192829280%No
192923665%No
1930364100%Yes
1931365100%Yes
193235497%Yes
193336299%Yes
1934364100%Yes
1935365100%Yes
1936366100%Yes
1937365100%Yes
1938364100%Yes
1939365100%Yes
194036499%Yes
1941364100%Yes
194236399%Yes
194336299%Yes
1944365100%Yes
1945364100%Yes
194630383%No
194736099%Yes
194835096%Yes
194934394%Yes
1950364100%Yes
1951364100%Yes
1952366100%Yes
1953364100%Yes
1954365100%Yes
195536399%Yes
1956366100%Yes
1957365100%Yes
1958364100%Yes
1959365100%Yes
196027475%No

Latest Records

20
Latest records at Lake Cochituate
DateStationRecordValueBeat old record byOld record stoodSignificance
20 September 1960Lake Cochituate, USdaily low max (Tie)15.0 C (59.0 F)tie47 years5 of 100 (Routine)
13 September 1960Lake Cochituate, USdaily rain71.4 mm (2.8 in)18.1 mm (0.7 in)42 years27 of 100 (Routine)
10 September 1960Lake Cochituate, USdaily high min19.4 C (66.9 F)1.6 C (2.9 F)71 years30 of 100 (Routine)
5 September 1960Lake Cochituate, USdaily low max (Tie)18.9 C (66.0 F)tie34 years4 of 100 (Routine)
20 August 1960Lake Cochituate, USdaily low max20.6 C (69.1 F)1.1 C (2.0 F)30 years18 of 100 (Routine)
15 July 1960Lake Cochituate, USdaily low max (Tie)22.8 C (73.0 F)tie34 years4 of 100 (Routine)
14 July 1960Lake Cochituate, USdaily rain74.4 mm (2.9 in)41.1 mm (1.6 in)12 years42 of 100 (Notable)
12 March 1960Lake Cochituate, USdaily low max-2.8 C (27.0 F)0.6 C (1.1 F)60 years26 of 100 (Routine)
12 February 1960Lake Cochituate, USdaily high max15.0 C (59.0 F)2.8 C (5.0 F)4 years13 of 100 (Routine)
17 December 1959Lake Cochituate, USdaily high max13.3 C (55.9 F)0.5 C (0.9 F)70 years28 of 100 (Routine)
25 November 1959Lake Cochituate, USdaily high max20.6 C (69.1 F)0.6 C (1.1 F)28 years16 of 100 (Routine)
25 November 1959Lake Cochituate, USdaily high min (Tie)8.9 C (48.0 F)tie28 years3 of 100 (Routine)
6 November 1959Lake Cochituate, USdaily high min16.1 C (61.0 F)2.2 C (4.0 F)20 years17 of 100 (Routine)
6 November 1959Lake Cochituate, USdaily high max24.4 C (75.9 F)1.6 C (2.9 F)10 years12 of 100 (Routine)
25 October 1959Lake Cochituate, USdaily high min15.6 C (60.1 F)2.8 C (5.0 F)45 years25 of 100 (Routine)
9 October 1959Lake Cochituate, USdaily rain19.1 mm (0.8 in)0.6 mm (0.02 in)25 years14 of 100 (Routine)
7 October 1959Lake Cochituate, USdaily high max (Tie)29.4 C (84.9 F)tie46 years5 of 100 (Routine)
2 October 1959Lake Cochituate, USdaily high min (Tie)13.9 C (57.0 F)tie56 years5 of 100 (Routine)
30 September 1959Lake Cochituate, USdaily high min19.4 C (66.9 F)0.5 C (0.9 F)37 years18 of 100 (Routine)
25 September 1959Lake Cochituate, USdaily high max (Tie)33.9 C (93.0 F)tie38 years4 of 100 (Routine)

Climate Trend

55 complete years, 1885 to 1959
Annual mean temperature at Lake Cochituate as warming stripes, 1885 to 1959 One stripe for each of 55 complete years at Lake Cochituate, 1885 to 1959. Blue stripes are years cooler than the station's own mean of 9.1 C (48.5 F); red stripes are warmer. The coolest year was 1904, at 7.1 C (44.9 F), and the warmest was 1953, at 10.6 C (51.1 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1885: 7.9 C, -1.3 C from the station mean1894: 8.7 C, -0.4 C from the station mean1897: 9.4 C, +0.3 C from the station mean1898: 9.8 C, +0.7 C from the station mean1899: 9.5 C, +0.3 C from the station mean1900: 9.9 C, +0.7 C from the station mean1902: 9.1 C, -0.1 C from the station mean1903: 8.6 C, -0.6 C from the station mean1904: 7.1 C, -2.0 C from the station mean1905: 8.0 C, -1.1 C from the station mean1906: 9.1 C, 0.0 C from the station mean1907: 8.4 C, -0.7 C from the station mean1908: 9.9 C, +0.8 C from the station mean1909: 9.3 C, +0.2 C from the station mean1910: 9.4 C, +0.3 C from the station mean1911: 9.6 C, +0.5 C from the station mean1913: 10.1 C, +0.9 C from the station mean1915: 9.5 C, +0.4 C from the station mean1916: 8.8 C, -0.3 C from the station mean1917: 8.0 C, -1.2 C from the station mean1918: 9.1 C, 0.0 C from the station mean1920: 8.9 C, -0.2 C from the station mean1921: 10.1 C, +1.0 C from the station mean1922: 9.5 C, +0.4 C from the station mean1924: 8.7 C, -0.4 C from the station mean1925: 9.6 C, +0.4 C from the station mean1926: 7.9 C, -1.2 C from the station mean1927: 9.5 C, +0.3 C from the station mean1930: 9.7 C, +0.5 C from the station mean1931: 10.2 C, +1.0 C from the station mean1932: 9.6 C, +0.5 C from the station mean1933: 9.4 C, +0.2 C from the station mean1934: 8.7 C, -0.4 C from the station mean1935: 8.2 C, -0.9 C from the station mean1936: 8.6 C, -0.5 C from the station mean1937: 9.9 C, +0.7 C from the station mean1938: 9.8 C, +0.7 C from the station mean1939: 9.0 C, -0.1 C from the station mean1940: 7.5 C, -1.7 C from the station mean1941: 8.9 C, -0.3 C from the station mean1942: 8.9 C, -0.2 C from the station mean1943: 8.6 C, -0.5 C from the station mean1944: 9.1 C, -0.1 C from the station mean1945: 9.0 C, -0.2 C from the station mean1947: 8.9 C, -0.3 C from the station mean1950: 8.8 C, -0.4 C from the station mean1951: 9.4 C, +0.3 C from the station mean1952: 9.7 C, +0.5 C from the station mean1953: 10.6 C, +1.5 C from the station mean1954: 9.6 C, +0.4 C from the station mean1955: 9.6 C, +0.5 C from the station mean1956: 8.7 C, -0.5 C from the station mean1957: 10.0 C, +0.9 C from the station mean1958: 8.9 C, -0.3 C from the station mean1959: 10.2 C, +1.1 C from the station mean18851890190019101920193019401950
One stripe for each of 55 complete years at Lake Cochituate, 1885 to 1959. Blue stripes are years cooler than the station's own mean of 9.1 C (48.5 F); red stripes are warmer. The coolest year was 1904, at 7.1 C (44.9 F), and the warmest was 1953, at 10.6 C (51.1 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Lake Cochituate as warming stripes, 1885 to 1959
YearAnnual mean temperatureDifference from the station mean
18857.9 C-1.27 C
18948.7 C-0.42 C
18979.4 C+0.27 C
18989.8 C+0.67 C
18999.5 C+0.32 C
19009.9 C+0.72 C
19029.1 C-0.08 C
19038.6 C-0.57 C
19047.1 C-2.00 C
19058.0 C-1.10 C
19069.1 C-0.02 C
19078.4 C-0.71 C
19089.9 C+0.79 C
19099.3 C+0.17 C
19109.4 C+0.26 C
19119.6 C+0.47 C
191310.1 C+0.93 C
19159.5 C+0.39 C
19168.8 C-0.31 C
19178.0 C-1.18 C
19189.1 C-0.04 C
19208.9 C-0.23 C
192110.1 C+0.97 C
19229.5 C+0.37 C
19248.7 C-0.40 C
19259.6 C+0.41 C
19267.9 C-1.23 C
19279.5 C+0.34 C
19309.7 C+0.52 C
193110.2 C+1.02 C
19329.6 C+0.49 C
19339.4 C+0.25 C
19348.7 C-0.41 C
19358.2 C-0.90 C
19368.6 C-0.50 C
19379.9 C+0.75 C
19389.8 C+0.68 C
19399.0 C-0.14 C
19407.5 C-1.65 C
19418.9 C-0.28 C
19428.9 C-0.23 C
19438.6 C-0.50 C
19449.1 C-0.08 C
19459.0 C-0.18 C
19478.9 C-0.27 C
19508.8 C-0.37 C
19519.4 C+0.29 C
19529.7 C+0.53 C
195310.6 C+1.47 C
19549.6 C+0.45 C
19559.6 C+0.46 C
19568.7 C-0.48 C
195710.0 C+0.90 C
19588.9 C-0.26 C
195910.2 C+1.10 C

The fitted trend in annual mean temperature here over 1885 to 1959 is 0.07 C (-0.03 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.13 F (-0.05 to 0.30) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Lake Cochituate
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.07 C (-0.03 to 0.17) per decade0.13 F (-0.05 to 0.30) per decade1885 to 195955Not clearly different from zero
Mean daily maximum-0.07 C (-0.18 to 0.04) per decade-0.1 F (-0.3 to 0.1) per decade1885 to 195955Not clearly different from zero
Mean daily minimum0.2 C (0.1 to 0.3) per decade0.4 F (0.2 to 0.6) per decade1885 to 195955Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1885 to 1960
Yearly extremes at Lake Cochituate: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)191136.1 C (97.0 F)71
Coldest night (TNn)-33.3 C (-27.9 F)1935-26.1 C (-15.0 F)71
Wettest day (Rx1day)176.5 mm (6.9 in)189572.0 mm (2.8 in)76
Wettest five days (Rx5day)265.3 mm (10.4 in)193890.0 mm (3.5 in)76
Longest dry spell (CDD)36 days191516 days76

Hottest day (TXx)

Hottest day (TXx) at Lake Cochituate by year The hottest day of the year at Lake Cochituate, 1885 to 1960. The record is 40.6 C (105.1 F) in 1911, marked on the chart; the median year is 36.1 C (97.0 F). 3032.53537.54042.51900192019401960Record: 40.6 C (105.1 F) in 1911
The hottest day of the year at Lake Cochituate, 1885 to 1960. The record is 40.6 C (105.1 F) in 1911, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Lake Cochituate by year
YearHottest day (TXx)
188535.6 C (96.1 F)
1886n/a
1887n/a
188836.1 C (97.0 F)
1889n/a
1890n/a
189131.7 C (89.1 F)
1892n/a
189335.0 C (95.0 F)
189437.2 C (99.0 F)
189536.1 C (97.0 F)
189636.1 C (97.0 F)
189736.1 C (97.0 F)
189838.3 C (100.9 F)
189935.6 C (96.1 F)
190037.2 C (99.0 F)
190140.0 C (104.0 F)
190233.9 C (93.0 F)
190336.1 C (97.0 F)
190435.0 C (95.0 F)
190535.0 C (95.0 F)
190634.4 C (93.9 F)
190737.2 C (99.0 F)
190837.2 C (99.0 F)
190935.6 C (96.1 F)
191036.1 C (97.0 F)
191140.6 C (105.1 F)
191238.3 C (100.9 F)
191336.7 C (98.1 F)
191436.1 C (97.0 F)
191535.6 C (96.1 F)
191636.1 C (97.0 F)
191738.3 C (100.9 F)
191837.2 C (99.0 F)
191940.0 C (104.0 F)
192033.9 C (93.0 F)
192136.7 C (98.1 F)
192236.1 C (97.0 F)
192336.7 C (98.1 F)
192437.2 C (99.0 F)
192538.3 C (100.9 F)
192638.3 C (100.9 F)
192735.6 C (96.1 F)
192836.7 C (98.1 F)
192935.0 C (95.0 F)
193036.1 C (97.0 F)
193135.6 C (96.1 F)
193233.3 C (91.9 F)
193336.7 C (98.1 F)
193436.1 C (97.0 F)
193535.0 C (95.0 F)
193635.0 C (95.0 F)
193736.1 C (97.0 F)
193834.4 C (93.9 F)
193933.9 C (93.0 F)
194034.4 C (93.9 F)
194135.0 C (95.0 F)
194233.3 C (91.9 F)
194334.4 C (93.9 F)
194435.6 C (96.1 F)
194534.4 C (93.9 F)
194634.4 C (93.9 F)
194736.7 C (98.1 F)
194838.9 C (102.0 F)
194938.3 C (100.9 F)
195032.8 C (91.0 F)
195132.8 C (91.0 F)
195236.7 C (98.1 F)
195339.4 C (102.9 F)
195435.6 C (96.1 F)
195536.1 C (97.0 F)
195636.1 C (97.0 F)
195736.7 C (98.1 F)
195833.9 C (93.0 F)
195937.2 C (99.0 F)
196033.9 C (93.0 F)

Coldest night (TNn)

Coldest night (TNn) at Lake Cochituate by year The coldest night of the year at Lake Cochituate, 1885 to 1960. The record is -33.3 C (-27.9 F) in 1935, marked on the chart; the median year is -26.1 C (-15.0 F). -40-30-20-1001900192019401960Record: -33.3 C (-27.9 F) in 1935
The coldest night of the year at Lake Cochituate, 1885 to 1960. The record is -33.3 C (-27.9 F) in 1935, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Lake Cochituate by year
YearColdest night (TNn)
1885-24.4 C (-11.9 F)
1886n/a
1887n/a
1888-22.2 C (-8.0 F)
1889n/a
1890n/a
1891-8.9 C (16.0 F)
1892n/a
1893-30.0 C (-22.0 F)
1894-30.6 C (-23.1 F)
1895-23.9 C (-11.0 F)
1896-26.7 C (-16.1 F)
1897-24.4 C (-11.9 F)
1898-30.0 C (-22.0 F)
1899-28.9 C (-20.0 F)
1900-25.0 C (-13.0 F)
1901-22.8 C (-9.0 F)
1902-26.7 C (-16.1 F)
1903-28.9 C (-20.0 F)
1904-32.8 C (-27.0 F)
1905-28.3 C (-18.9 F)
1906-20.0 C (-4.0 F)
1907-31.1 C (-24.0 F)
1908-22.8 C (-9.0 F)
1909-25.6 C (-14.1 F)
1910-28.3 C (-18.9 F)
1911-27.2 C (-17.0 F)
1912-31.1 C (-24.0 F)
1913-26.1 C (-15.0 F)
1914-28.9 C (-20.0 F)
1915-20.6 C (-5.1 F)
1916-31.1 C (-24.0 F)
1917-27.2 C (-17.0 F)
1918-31.1 C (-24.0 F)
1919-25.0 C (-13.0 F)
1920-31.1 C (-24.0 F)
1921-23.3 C (-9.9 F)
1922-30.6 C (-23.1 F)
1923-27.8 C (-18.0 F)
1924-25.0 C (-13.0 F)
1925-27.8 C (-18.0 F)
1926-27.2 C (-17.0 F)
1927-23.9 C (-11.0 F)
1928-25.6 C (-14.1 F)
1929-20.6 C (-5.1 F)
1930-25.6 C (-14.1 F)
1931-27.8 C (-18.0 F)
1932-26.7 C (-16.1 F)
1933-31.7 C (-25.1 F)
1934-32.8 C (-27.0 F)
1935-33.3 C (-27.9 F)
1936-26.7 C (-16.1 F)
1937-18.3 C (-0.9 F)
1938-31.7 C (-25.1 F)
1939-21.1 C (-6.0 F)
1940-24.4 C (-11.9 F)
1941-22.8 C (-9.0 F)
1942-29.4 C (-20.9 F)
1943-33.3 C (-27.9 F)
1944-23.3 C (-9.9 F)
1945-26.7 C (-16.1 F)
1946-26.1 C (-15.0 F)
1947-22.2 C (-8.0 F)
1948-32.2 C (-26.0 F)
1949-26.1 C (-15.0 F)
1950-22.8 C (-9.0 F)
1951-19.4 C (-2.9 F)
1952-21.7 C (-7.1 F)
1953-16.7 C (1.9 F)
1954-27.8 C (-18.0 F)
1955-24.4 C (-11.9 F)
1956-19.4 C (-2.9 F)
1957-31.7 C (-25.1 F)
1958-21.1 C (-6.0 F)
1959-20.6 C (-5.1 F)
1960-16.1 C (3.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lake Cochituate by year The wettest day of the year at Lake Cochituate, 1885 to 1960. The record is 176.5 mm (6.9 in) in 1895, marked on the chart; the median year is 72.0 mm (2.8 in). 0501001502001900192019401960Record: 176.5 mm (6.9 in) in 1895
The wettest day of the year at Lake Cochituate, 1885 to 1960. The record is 176.5 mm (6.9 in) in 1895, marked on the chart; the median year is 72.0 mm (2.8 in).
Wettest day (Rx1day) at Lake Cochituate by year
YearWettest day (Rx1day)
188569.6 mm (2.7 in)
1886125.7 mm (4.9 in)
188749.3 mm (1.9 in)
1888101.6 mm (4.0 in)
188966.8 mm (2.6 in)
189082.3 mm (3.2 in)
189161.0 mm (2.4 in)
189272.4 mm (2.9 in)
189372.6 mm (2.9 in)
189455.4 mm (2.2 in)
1895176.5 mm (6.9 in)
189691.4 mm (3.6 in)
189772.4 mm (2.9 in)
189878.2 mm (3.1 in)
189962.7 mm (2.5 in)
190077.0 mm (3.0 in)
190172.9 mm (2.9 in)
190258.9 mm (2.3 in)
190372.6 mm (2.9 in)
1904123.4 mm (4.9 in)
1905158.2 mm (6.2 in)
190687.4 mm (3.4 in)
190764.3 mm (2.5 in)
190840.6 mm (1.6 in)
190967.8 mm (2.7 in)
191064.8 mm (2.6 in)
191158.4 mm (2.3 in)
191266.5 mm (2.6 in)
191364.5 mm (2.5 in)
191443.7 mm (1.7 in)
191566.0 mm (2.6 in)
191670.6 mm (2.8 in)
191759.2 mm (2.3 in)
191863.0 mm (2.5 in)
191971.6 mm (2.8 in)
192086.1 mm (3.4 in)
192189.9 mm (3.5 in)
1922135.4 mm (5.3 in)
192398.0 mm (3.9 in)
192471.4 mm (2.8 in)
192593.7 mm (3.7 in)
192663.0 mm (2.5 in)
192780.5 mm (3.2 in)
192861.7 mm (2.4 in)
192965.0 mm (2.6 in)
193064.0 mm (2.5 in)
1931126.5 mm (5.0 in)
1932153.4 mm (6.0 in)
1933129.0 mm (5.1 in)
193442.7 mm (1.7 in)
193590.7 mm (3.6 in)
193676.7 mm (3.0 in)
193773.9 mm (2.9 in)
1938107.4 mm (4.2 in)
1939108.7 mm (4.3 in)
194062.7 mm (2.5 in)
194162.7 mm (2.5 in)
194294.2 mm (3.7 in)
194351.3 mm (2.0 in)
194485.9 mm (3.4 in)
194568.6 mm (2.7 in)
194655.4 mm (2.2 in)
194798.6 mm (3.9 in)
194845.2 mm (1.8 in)
194982.6 mm (3.3 in)
195077.5 mm (3.1 in)
195165.5 mm (2.6 in)
195272.6 mm (2.9 in)
195364.0 mm (2.5 in)
1954175.3 mm (6.9 in)
1955137.2 mm (5.4 in)
195636.8 mm (1.4 in)
195735.1 mm (1.4 in)
195849.5 mm (1.9 in)
195958.4 mm (2.3 in)
196074.4 mm (2.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lake Cochituate by year The wettest five days of the year at Lake Cochituate, 1885 to 1960. The record is 265.3 mm (10.4 in) in 1938, marked on the chart; the median year is 90.0 mm (3.5 in). 01002003001900192019401960Record: 265.3 mm (10.4 in) in 1938
The wettest five days of the year at Lake Cochituate, 1885 to 1960. The record is 265.3 mm (10.4 in) in 1938, marked on the chart; the median year is 90.0 mm (3.5 in).
Wettest five days (Rx5day) at Lake Cochituate by year
YearWettest five days (Rx5day)
188570.6 mm (2.8 in)
1886126.2 mm (5.0 in)
188765.8 mm (2.6 in)
1888108.9 mm (4.3 in)
1889113.1 mm (4.5 in)
1890113.2 mm (4.5 in)
189177.5 mm (3.1 in)
189280.0 mm (3.1 in)
189381.8 mm (3.2 in)
189473.4 mm (2.9 in)
1895177.5 mm (7.0 in)
1896129.0 mm (5.1 in)
189781.8 mm (3.2 in)
189882.5 mm (3.2 in)
189980.8 mm (3.2 in)
190093.8 mm (3.7 in)
190174.9 mm (2.9 in)
190276.4 mm (3.0 in)
190371.1 mm (2.8 in)
1904136.9 mm (5.4 in)
1905169.9 mm (6.7 in)
190693.8 mm (3.7 in)
190771.4 mm (2.8 in)
190860.5 mm (2.4 in)
190974.7 mm (2.9 in)
191064.8 mm (2.6 in)
191187.6 mm (3.4 in)
191289.2 mm (3.5 in)
191384.3 mm (3.3 in)
191461.5 mm (2.4 in)
191580.5 mm (3.2 in)
191671.2 mm (2.8 in)
191767.8 mm (2.7 in)
191874.9 mm (2.9 in)
191997.3 mm (3.8 in)
1920103.7 mm (4.1 in)
1921127.3 mm (5.0 in)
1922151.9 mm (6.0 in)
1923113.5 mm (4.5 in)
192475.2 mm (3.0 in)
192594.7 mm (3.7 in)
192666.6 mm (2.6 in)
1927149.6 mm (5.9 in)
1928100.1 mm (3.9 in)
192968.8 mm (2.7 in)
193064.0 mm (2.5 in)
1931126.5 mm (5.0 in)
1932153.9 mm (6.1 in)
1933203.7 mm (8.0 in)
193467.8 mm (2.7 in)
1935131.1 mm (5.2 in)
1936100.3 mm (3.9 in)
193777.2 mm (3.0 in)
1938265.3 mm (10.4 in)
1939117.3 mm (4.6 in)
1940103.6 mm (4.1 in)
194162.7 mm (2.5 in)
194295.7 mm (3.8 in)
194369.9 mm (2.8 in)
1944152.0 mm (6.0 in)
194588.1 mm (3.5 in)
194666.8 mm (2.6 in)
1947147.1 mm (5.8 in)
194869.6 mm (2.7 in)
194990.5 mm (3.6 in)
195097.0 mm (3.8 in)
1951111.4 mm (4.4 in)
1952115.3 mm (4.5 in)
1953138.0 mm (5.4 in)
1954226.9 mm (8.9 in)
1955252.5 mm (9.9 in)
1956113.8 mm (4.5 in)
195766.5 mm (2.6 in)
195889.4 mm (3.5 in)
195985.3 mm (3.4 in)
1960107.2 mm (4.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lake Cochituate by year The longest dry spell of the year at Lake Cochituate, 1885 to 1960. The record is 36 days in 1915, marked on the chart; the median year is 16 days. 0102030401900192019401960Record: 36 days in 1915
The longest dry spell of the year at Lake Cochituate, 1885 to 1960. The record is 36 days in 1915, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Lake Cochituate by year
YearLongest dry spell (CDD)
188514 days
188614 days
188720 days
18888 days
188918 days
189018 days
189113 days
189217 days
189313 days
189416 days
189516 days
189613 days
189715 days
189810 days
189912 days
190022 days
190117 days
190215 days
190312 days
190417 days
190516 days
190612 days
190711 days
190822 days
190913 days
191014 days
191117 days
191219 days
191318 days
191426 days
191536 days
191613 days
191717 days
191819 days
191915 days
192028 days
192119 days
192221 days
192316 days
192435 days
192520 days
192617 days
192715 days
192811 days
192914 days
193020 days
193121 days
193214 days
193313 days
193418 days
193520 days
193615 days
193710 days
193813 days
193925 days
194017 days
194119 days
194215 days
194319 days
194418 days
194511 days
194618 days
194735 days
194813 days
194916 days
195017 days
195112 days
195215 days
195314 days
195412 days
195524 days
195617 days
195719 days
195821 days
195915 days
196015 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

55 years with a frost

Across 55 years with a frost, the median last spring frost at Lake Cochituate falls on 17 May and the median first autumn frost on 27 September, which leaves a median of 127 days between them.

Fitted over all years, the growing season changes by +2.0 days per decade at this station.

Frost dates and growing season at Lake Cochituate
MeasureMedian, all yearsEarliest periodRecent period (1925 to 1959)Recent against earliestFitted trend
Last spring frost17 Mayn/a18 Mayn/a-0.9 days per decade
First autumn frost27 Septembern/a28 Septembern/a+1.1 days per decade
Growing days127 daysn/a128 daysn/a+2.0 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

47 years, 1886 to 1959

A day with at least 73.5 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 212.2 mm (8.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Lake Cochituate: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years73.5 mm (2.9 in)
5 years101.2 mm (4.0 in)
10 years122.8 mm (4.8 in)
25 years154.5 mm (6.1 in)
50 years181.7 mm (7.2 in)Longer than the 47 years of record
100 years212.2 mm (8.4 in)Longer than the 47 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 47 years of values from 1886 to 1959.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 175.3 mm (6.9 in) in 1954; 158.2 mm (6.2 in) in 1905; 153.4 mm (6.0 in) in 1932.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

  • Data for Lake Cochituate standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lake Cochituate threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).