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Detroit Weather Records (USC00352277)

Record envelope, standing records and threshold days for Detroit (USC00352277), Oregon, United States, with 79 years of record.

Key Facts for Detroit

  • Detroit (USC00352277) is a weather station in Oregon, United States at 44.73 latitude and -122.15 longitude, 485 m (1,591 ft) above sea level.
  • The station reports from 1894 to 1972, 79 years of record.
  • 1,464 records set at Detroit still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Detroit set a daily record precipitation of 34.3 mm (1.4 in) on 24 September 1972.

About the Station

  • Location: Oregon, United States, 44.73 latitude, -122.15 longitude.
  • Elevation: 485 m (1,591 ft).
  • Period of record: 1894 to 1972, 79 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Detroit, with 2026 drawn through them The band shows the record high and record low for each calendar day at Detroit. 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 Detroit. 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 Detroit, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-20.6 C (-5.1 F)n/an/a
Feb24.4 C (75.9 F)-18.3 C (-0.9 F)n/an/a
Mar26.1 C (79.0 F)-12.2 C (10.0 F)n/an/a
Apr32.2 C (90.0 F)-7.8 C (18.0 F)n/an/a
May35.0 C (95.0 F)-3.9 C (25.0 F)n/an/a
Jun41.7 C (107.1 F)-1.1 C (30.0 F)n/an/a
Jul40.6 C (105.1 F)0.0 C (32.0 F)n/an/a
Aug41.1 C (106.0 F)-0.6 C (30.9 F)n/an/a
Sep39.4 C (102.9 F)-2.2 C (28.0 F)n/an/a
Oct34.4 C (93.9 F)-7.8 C (18.0 F)n/an/a
Nov31.7 C (89.1 F)-17.8 C (0.0 F)n/an/a
Dec15.6 C (60.1 F)-16.7 C (1.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Detroit by the year they were set 1,464 records at Detroit still stand. 1903 holds the most, with 64. 0204060801894: 341895: 411896: 381902: 311903: 641904: 261936: 441937: 401938: 371939: 371940: 481941: 511942: 281943: 191944: 301945: 351946: 281947: 301948: 411949: 571950: 361951: 391952: 331953: 351954: 291955: 401956: 381957: 261958: 341959: 181960: 291961: 441962: 431963: 311964: 281965: 291966: 181967: 271968: 321969: 201970: 261971: 341972: 16189419041940194519501955196019651970
1,464 records at Detroit still stand. 1903 holds the most, with 64.
Standing records at Detroit by the year they were set
Year setStanding records
189434
189541
189638
190231
190364
190426
193644
193740
193837
193937
194048
194151
194228
194319
194430
194535
194628
194730
194841
194957
195036
195139
195233
195335
195429
195540
195638
195726
195834
195918
196029
196144
196243
196331
196428
196529
196618
196727
196832
196920
197026
197134
197216

All-Time Record Progression

1 new records
When Detroit set new all-time records 1 all-time records were set at Detroit between 28 January 1965 and 28 January 1965. Each dot is a new record. Record daily precipitation28 January 1965: Record daily precipitation 136.4 mm (5.4 in)1965
1 all-time records were set at Detroit between 28 January 1965 and 28 January 1965. Each dot is a new record.
When Detroit set new all-time records
DateKindDetail
1965-01-28Record daily precipitationRecord daily precipitation 136.4 mm (5.4 in)

Wettest Day of Each Month

Jan: 136.4 mm (5.4 in)
Record daily precipitation for each month at Detroit The wettest day on record for each calendar month at Detroit. The most was 136.4 mm (5.4 in) on 28 January 1965. 050100150 Jan: 136.4 mm (5.4 in), 28 January 1965 Jan Feb: 111.8 mm (4.4 in), 10 February 1961 Feb Mar: 134.6 mm (5.3 in), 2 March 1972 Mar Apr: 69.9 mm (2.8 in), 1 April 1931 Apr May: 69.3 mm (2.7 in), 2 May 1949 May Jun: 54.6 mm (2.1 in), 9 June 1927 Jun Jul: 40.9 mm (1.6 in), 2 July 1902 Jul Aug: 46.5 mm (1.8 in), 29 August 1943 Aug Sep: 91.4 mm (3.6 in), 26 September 1959 Sep Oct: 87.9 mm (3.5 in), 16 October 1947 Oct Nov: 122.2 mm (4.8 in), 22 November 1909 Nov Dec: 117.1 mm (4.6 in), 22 December 1964 Dec
The wettest day on record for each calendar month at Detroit. The most was 136.4 mm (5.4 in) on 28 January 1965.
Record daily precipitation for each month at Detroit
MonthRecord daily precipitation (mm)Date
Jan136.4 mm (5.4 in)28 January 1965
Feb111.8 mm (4.4 in)10 February 1961
Mar134.6 mm (5.3 in)2 March 1972
Apr69.9 mm (2.8 in)1 April 1931
May69.3 mm (2.7 in)2 May 1949
Jun54.6 mm (2.1 in)9 June 1927
Jul40.9 mm (1.6 in)2 July 1902
Aug46.5 mm (1.8 in)29 August 1943
Sep91.4 mm (3.6 in)26 September 1959
Oct87.9 mm (3.5 in)16 October 1947
Nov122.2 mm (4.8 in)22 November 1909
Dec117.1 mm (4.6 in)22 December 1964

Period of Record Coverage

1894 to 1972
Days with data per year at Detroit 43 years of record at Detroit, 1894 to 1972. 8 years have data for under 90 percent of days and are left out of rankings: 1894, 1896, 1902, 1903, 1904, 1936, 1938, 1972. 1894: 238 of 365 days1895: 363 of 365 days1896: 289 of 366 days1902: 298 of 365 days1903: 162 of 365 days1904: 179 of 366 days1936: 217 of 366 days1937: 332 of 365 days1938: 324 of 365 days1939: 333 of 365 days1940: 364 of 366 days1941: 358 of 365 days1942: 364 of 365 days1943: 330 of 365 days1944: 363 of 366 days1945: 362 of 365 days1946: 361 of 365 days1947: 362 of 365 days1948: 363 of 366 days1949: 364 of 365 days1950: 365 of 365 days1951: 355 of 365 days1952: 337 of 366 days1953: 359 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 365 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 364 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 336 of 366 days1965: 360 of 365 days1966: 358 of 365 days1967: 364 of 365 days1968: 333 of 366 days1969: 333 of 365 days1970: 364 of 365 days1971: 364 of 365 days1972: 273 of 366 days1940195019601970
43 years of record at Detroit, 1894 to 1972. 8 years have data for under 90 percent of days and are left out of rankings: 1894, 1896, 1902, 1903, 1904, 1936, 1938, 1972.
Days with data per year at Detroit
YearDays with dataShare of yearComplete
189423865%No
189536399%Yes
189628979%No
190229882%No
190316244%No
190417949%No
193621759%No
193733291%Yes
193832489%No
193933391%Yes
194036499%Yes
194135898%Yes
1942364100%Yes
194333090%Yes
194436399%Yes
194536299%Yes
194636199%Yes
194736299%Yes
194836399%Yes
1949364100%Yes
1950365100%Yes
195135597%Yes
195233792%Yes
195335998%Yes
1954365100%Yes
1955364100%Yes
1956365100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961364100%Yes
1962365100%Yes
1963365100%Yes
196433692%Yes
196536099%Yes
196635898%Yes
1967364100%Yes
196833391%Yes
196933391%Yes
1970364100%Yes
1971364100%Yes
197227375%No

Latest Records

20
Latest records at Detroit
DateStationRecordValueBeat old record byOld record stoodSignificance
24 September 1972Detroit, USdaily rain34.3 mm (1.4 in)7.6 mm (0.30 in)48 years28 of 100 (Routine)
22 September 1972Detroit, USdaily rain35.1 mm (1.4 in)8.4 mm (0.33 in)39 years25 of 100 (Routine)
28 August 1972Detroit, USdaily high max (Tie)36.7 C (98.1 F)tie69 years6 of 100 (Routine)
17 August 1972Detroit, USdaily rain16.5 mm (0.6 in)4.8 mm (0.19 in)70 years20 of 100 (Routine)
8 August 1972Detroit, USmonthly high max (Tie)41.1 C (106.0 F)tie70 years9 of 100 (Routine)
7 August 1972Detroit, USdaily high max39.4 C (102.9 F)2.2 C (4.0 F)70 years32 of 100 (Routine)
13 July 1972Detroit, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)16 years13 of 100 (Routine)
5 July 1972Detroit, USdaily high max35.0 C (95.0 F)0.6 C (1.1 F)14 years12 of 100 (Routine)
24 June 1972Detroit, USdaily low max (Tie)13.3 C (55.9 F)tie3 years1 of 100 (Routine)
15 June 1972Detroit, USdaily high min (Tie)12.2 C (54.0 F)tie12 years2 of 100 (Routine)
29 May 1972Detroit, USdaily high max32.2 C (90.0 F)1.1 C (2.0 F)15 years12 of 100 (Routine)
8 May 1972Detroit, USdaily low max9.4 C (48.9 F)1.2 C (2.2 F)24 years15 of 100 (Routine)
29 April 1972Detroit, USdaily low min-5.0 C (23.0 F)1.7 C (3.1 F)18 years18 of 100 (Routine)
29 April 1972Detroit, USdaily snowfall (Tie)2.5 cm (1.0 in)tie59 years6 of 100 (Routine)
22 April 1972Detroit, USdaily low max (Tie)7.2 C (45.0 F)tie75 years7 of 100 (Routine)
20 April 1972Detroit, USdaily low min-3.9 C (25.0 F)1.7 C (3.1 F)34 years23 of 100 (Routine)
18 April 1972Detroit, USdaily low max4.4 C (39.9 F)0.6 C (1.1 F)75 years30 of 100 (Routine)
17 April 1972Detroit, USdaily snowfall7.6 cm (3.0 in)6.3 cm (2.5 in)4 years20 of 100 (Routine)
4 April 1972Detroit, USdaily high min5.0 C (41.0 F)0.6 C (1.1 F)28 years17 of 100 (Routine)
26 March 1972Detroit, USdaily low max (Tie)3.9 C (39.0 F)tie35 years4 of 100 (Routine)

Climate Trend

28 complete years, 1895 to 1971
Annual mean temperature at Detroit as warming stripes, 1895 to 1971 One stripe for each of 28 complete years at Detroit, 1895 to 1971. Blue stripes are years cooler than the station's own mean of 9.4 C (48.9 F); red stripes are warmer. The coolest year was 1948, at 8.1 C (46.6 F), and the warmest was 1958, at 11.0 C (51.8 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1895: 9.1 C, -0.2 C from the station mean1940: 10.5 C, +1.1 C from the station mean1941: 10.2 C, +0.8 C from the station mean1942: 9.6 C, +0.2 C from the station mean1944: 8.7 C, -0.7 C from the station mean1945: 8.8 C, -0.6 C from the station mean1946: 8.6 C, -0.8 C from the station mean1947: 9.4 C, 0.0 C from the station mean1948: 8.1 C, -1.3 C from the station mean1949: 8.4 C, -1.0 C from the station mean1950: 8.6 C, -0.8 C from the station mean1951: 8.9 C, -0.4 C from the station mean1953: 10.2 C, +0.8 C from the station mean1954: 9.1 C, -0.3 C from the station mean1955: 8.3 C, -1.1 C from the station mean1956: 9.2 C, -0.2 C from the station mean1957: 9.4 C, 0.0 C from the station mean1958: 11.0 C, +1.6 C from the station mean1959: 9.7 C, +0.3 C from the station mean1960: 9.8 C, +0.4 C from the station mean1961: 10.3 C, +0.9 C from the station mean1962: 9.8 C, +0.4 C from the station mean1963: 9.8 C, +0.5 C from the station mean1965: 9.9 C, +0.5 C from the station mean1966: 9.8 C, +0.4 C from the station mean1967: 10.4 C, +1.0 C from the station mean1970: 9.1 C, -0.2 C from the station mean1971: 8.3 C, -1.1 C from the station mean189519001910192019301940195019601970
One stripe for each of 28 complete years at Detroit, 1895 to 1971. Blue stripes are years cooler than the station's own mean of 9.4 C (48.9 F); red stripes are warmer. The coolest year was 1948, at 8.1 C (46.6 F), and the warmest was 1958, at 11.0 C (51.8 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Detroit as warming stripes, 1895 to 1971
YearAnnual mean temperatureDifference from the station mean
18959.1 C-0.24 C
194010.5 C+1.06 C
194110.2 C+0.80 C
19429.6 C+0.21 C
19448.7 C-0.71 C
19458.8 C-0.63 C
19468.6 C-0.75 C
19479.4 C-0.03 C
19488.1 C-1.28 C
19498.4 C-0.96 C
19508.6 C-0.80 C
19518.9 C-0.45 C
195310.2 C+0.77 C
19549.1 C-0.31 C
19558.3 C-1.10 C
19569.2 C-0.22 C
19579.4 C+0.01 C
195811.0 C+1.63 C
19599.7 C+0.29 C
19609.8 C+0.37 C
196110.3 C+0.89 C
19629.8 C+0.39 C
19639.8 C+0.46 C
19659.9 C+0.51 C
19669.8 C+0.43 C
196710.4 C+1.02 C
19709.1 C-0.24 C
19718.3 C-1.05 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1894 to 1972
Yearly extremes at Detroit: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)196137.8 C (100.0 F)43
Coldest night (TNn)-20.6 C (-5.1 F)1949-11.7 C (10.9 F)43
Wettest day (Rx1day)136.4 mm (5.4 in)196574.8 mm (2.9 in)70
Wettest five days (Rx5day)385.0 mm (15.2 in)1964185.2 mm (7.3 in)70
Longest dry spell (CDD)92 days192936 days70

Hottest day (TXx)

Hottest day (TXx) at Detroit by year The hottest day of the year at Detroit, 1894 to 1972. The record is 41.7 C (107.1 F) in 1961, marked on the chart; the median year is 37.8 C (100.0 F). 3032.53537.54042.51900192019401960Record: 41.7 C (107.1 F) in 1961
The hottest day of the year at Detroit, 1894 to 1972. The record is 41.7 C (107.1 F) in 1961, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Detroit by year
YearHottest day (TXx)
189440.6 C (105.1 F)
189540.6 C (105.1 F)
189637.2 C (99.0 F)
190241.1 C (106.0 F)
190338.9 C (102.0 F)
190440.6 C (105.1 F)
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
193632.2 C (90.0 F)
193737.2 C (99.0 F)
193840.0 C (104.0 F)
193937.8 C (100.0 F)
194036.1 C (97.0 F)
194135.6 C (96.1 F)
194237.8 C (100.0 F)
194335.6 C (96.1 F)
194438.9 C (102.0 F)
194537.8 C (100.0 F)
194640.0 C (104.0 F)
194733.3 C (91.9 F)
194835.0 C (95.0 F)
194937.2 C (99.0 F)
195037.8 C (100.0 F)
195138.3 C (100.9 F)
195238.3 C (100.9 F)
195338.9 C (102.0 F)
195432.2 C (90.0 F)
195539.4 C (102.9 F)
195640.6 C (105.1 F)
195735.0 C (95.0 F)
195838.9 C (102.0 F)
195937.2 C (99.0 F)
196039.4 C (102.9 F)
196141.7 C (107.1 F)
196236.1 C (97.0 F)
196335.6 C (96.1 F)
196435.6 C (96.1 F)
196538.9 C (102.0 F)
196636.1 C (97.0 F)
196739.4 C (102.9 F)
196835.6 C (96.1 F)
196933.3 C (91.9 F)
197037.2 C (99.0 F)
197138.9 C (102.0 F)
197241.1 C (106.0 F)

Coldest night (TNn)

Coldest night (TNn) at Detroit by year The coldest night of the year at Detroit, 1894 to 1972. The record is -20.6 C (-5.1 F) in 1949, marked on the chart; the median year is -11.7 C (10.9 F). -25-20-15-10-51900192019401960Record: -20.6 C (-5.1 F) in 1949
The coldest night of the year at Detroit, 1894 to 1972. The record is -20.6 C (-5.1 F) in 1949, marked on the chart; the median year is -11.7 C (10.9 F).
Coldest night (TNn) at Detroit by year
YearColdest night (TNn)
1894-10.0 C (14.0 F)
1895-11.1 C (12.0 F)
1896-11.1 C (12.0 F)
1902-15.0 C (5.0 F)
1903-7.8 C (18.0 F)
1904-9.4 C (15.1 F)
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936-10.6 C (12.9 F)
1937-18.9 C (-2.0 F)
1938-7.2 C (19.0 F)
1939-6.7 C (19.9 F)
1940-10.0 C (14.0 F)
1941-7.2 C (19.0 F)
1942-12.2 C (10.0 F)
1943-7.2 C (19.0 F)
1944-8.9 C (16.0 F)
1945-10.6 C (12.9 F)
1946-9.4 C (15.1 F)
1947-16.7 C (1.9 F)
1948-15.6 C (3.9 F)
1949-20.6 C (-5.1 F)
1950-18.3 C (-0.9 F)
1951-16.7 C (1.9 F)
1952-13.9 C (7.0 F)
1953-5.0 C (23.0 F)
1954-12.2 C (10.0 F)
1955-17.8 C (0.0 F)
1956-16.1 C (3.0 F)
1957-17.8 C (0.0 F)
1958-6.7 C (19.9 F)
1959-12.2 C (10.0 F)
1960-11.1 C (12.0 F)
1961-11.1 C (12.0 F)
1962-13.9 C (7.0 F)
1963-16.1 C (3.0 F)
1964-16.7 C (1.9 F)
1965-11.7 C (10.9 F)
1966-8.9 C (16.0 F)
1967-7.2 C (19.0 F)
1968-15.0 C (5.0 F)
1969-12.8 C (9.0 F)
1970-11.1 C (12.0 F)
1971-12.2 C (10.0 F)
1972-14.4 C (6.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Detroit by year The wettest day of the year at Detroit, 1894 to 1972. The record is 136.4 mm (5.4 in) in 1965, marked on the chart; the median year is 74.8 mm (2.9 in). 0501001501900192019401960Record: 136.4 mm (5.4 in) in 1965
The wettest day of the year at Detroit, 1894 to 1972. The record is 136.4 mm (5.4 in) in 1965, marked on the chart; the median year is 74.8 mm (2.9 in).
Wettest day (Rx1day) at Detroit by year
YearWettest day (Rx1day)
189450.8 mm (2.0 in)
189573.9 mm (2.9 in)
189655.9 mm (2.2 in)
190248.5 mm (1.9 in)
190352.6 mm (2.1 in)
190444.2 mm (1.7 in)
1909122.2 mm (4.8 in)
191068.3 mm (2.7 in)
191161.0 mm (2.4 in)
191274.2 mm (2.9 in)
191378.2 mm (3.1 in)
191459.9 mm (2.4 in)
191567.6 mm (2.7 in)
191673.7 mm (2.9 in)
191772.6 mm (2.9 in)
191865.0 mm (2.6 in)
1919101.6 mm (4.0 in)
192083.8 mm (3.3 in)
1921121.9 mm (4.8 in)
192253.3 mm (2.1 in)
1923114.3 mm (4.5 in)
192463.5 mm (2.5 in)
192550.8 mm (2.0 in)
192681.3 mm (3.2 in)
192787.6 mm (3.4 in)
192888.9 mm (3.5 in)
192973.7 mm (2.9 in)
193069.1 mm (2.7 in)
193191.4 mm (3.6 in)
193250.8 mm (2.0 in)
1933102.9 mm (4.1 in)
193463.5 mm (2.5 in)
193531.8 mm (1.3 in)
193639.4 mm (1.6 in)
193766.5 mm (2.6 in)
193865.5 mm (2.6 in)
193964.3 mm (2.5 in)
194061.0 mm (2.4 in)
194172.4 mm (2.9 in)
194288.9 mm (3.5 in)
194371.1 mm (2.8 in)
194442.7 mm (1.7 in)
194590.9 mm (3.6 in)
194679.2 mm (3.1 in)
194787.9 mm (3.5 in)
1948102.1 mm (4.0 in)
1949105.2 mm (4.1 in)
195085.3 mm (3.4 in)
195177.7 mm (3.1 in)
195251.6 mm (2.0 in)
195399.8 mm (3.9 in)
195475.4 mm (3.0 in)
195599.3 mm (3.9 in)
1956111.3 mm (4.4 in)
195786.6 mm (3.4 in)
195880.3 mm (3.2 in)
195991.4 mm (3.6 in)
196094.5 mm (3.7 in)
1961111.8 mm (4.4 in)
196270.1 mm (2.8 in)
196397.0 mm (3.8 in)
1964117.1 mm (4.6 in)
1965136.4 mm (5.4 in)
196694.7 mm (3.7 in)
196760.7 mm (2.4 in)
196882.3 mm (3.2 in)
196962.5 mm (2.5 in)
197082.8 mm (3.3 in)
197171.1 mm (2.8 in)
1972134.6 mm (5.3 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Detroit by year The wettest five days of the year at Detroit, 1894 to 1972. The record is 385.0 mm (15.2 in) in 1964, marked on the chart; the median year is 185.2 mm (7.3 in). 01002003004001900192019401960Record: 385.0 mm (15.2 in) in 1964
The wettest five days of the year at Detroit, 1894 to 1972. The record is 385.0 mm (15.2 in) in 1964, marked on the chart; the median year is 185.2 mm (7.3 in).
Wettest five days (Rx5day) at Detroit by year
YearWettest five days (Rx5day)
1894119.2 mm (4.7 in)
1895172.8 mm (6.8 in)
1896175.3 mm (6.9 in)
1902117.0 mm (4.6 in)
1903181.2 mm (7.1 in)
1904122.0 mm (4.8 in)
1909275.9 mm (10.9 in)
1910191.8 mm (7.6 in)
1911155.5 mm (6.1 in)
1912204.0 mm (8.0 in)
1913189.1 mm (7.4 in)
1914166.8 mm (6.6 in)
1915171.2 mm (6.7 in)
1916153.7 mm (6.1 in)
1917210.5 mm (8.3 in)
1918151.6 mm (6.0 in)
1919225.6 mm (8.9 in)
1920156.3 mm (6.2 in)
1921268.7 mm (10.6 in)
1922122.0 mm (4.8 in)
1923293.4 mm (11.6 in)
1924230.8 mm (9.1 in)
1925149.9 mm (5.9 in)
1926173.3 mm (6.8 in)
1927219.7 mm (8.6 in)
1928144.8 mm (5.7 in)
1929223.5 mm (8.8 in)
1930136.1 mm (5.4 in)
1931224.0 mm (8.8 in)
1932141.0 mm (5.6 in)
1933208.3 mm (8.2 in)
1934182.4 mm (7.2 in)
193581.0 mm (3.2 in)
1936139.9 mm (5.5 in)
1937178.5 mm (7.0 in)
1938152.4 mm (6.0 in)
1939144.8 mm (5.7 in)
1940142.8 mm (5.6 in)
1941174.6 mm (6.9 in)
1942210.8 mm (8.3 in)
1943215.1 mm (8.5 in)
1944121.6 mm (4.8 in)
1945200.4 mm (7.9 in)
1946280.3 mm (11.0 in)
1947227.9 mm (9.0 in)
1948214.6 mm (8.4 in)
1949235.3 mm (9.3 in)
1950241.8 mm (9.5 in)
1951187.9 mm (7.4 in)
1952149.1 mm (5.9 in)
1953266.2 mm (10.5 in)
1954149.3 mm (5.9 in)
1955259.1 mm (10.2 in)
1956259.1 mm (10.2 in)
1957227.7 mm (9.0 in)
1958173.3 mm (6.8 in)
1959152.9 mm (6.0 in)
1960226.9 mm (8.9 in)
1961252.8 mm (10.0 in)
1962164.8 mm (6.5 in)
1963181.2 mm (7.1 in)
1964385.0 mm (15.2 in)
1965282.4 mm (11.1 in)
1966259.3 mm (10.2 in)
1967155.8 mm (6.1 in)
1968224.1 mm (8.8 in)
1969171.0 mm (6.7 in)
1970220.4 mm (8.7 in)
1971217.8 mm (8.6 in)
1972264.3 mm (10.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Detroit by year The longest dry spell of the year at Detroit, 1894 to 1972. The record is 92 days in 1929, marked on the chart; the median year is 36 days. 0204060801001900192019401960Record: 92 days in 1929
The longest dry spell of the year at Detroit, 1894 to 1972. The record is 92 days in 1929, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Detroit by year
YearLongest dry spell (CDD)
189437 days
189531 days
189635 days
190233 days
190349 days
190430 days
190916 days
191068 days
191164 days
191221 days
191322 days
191446 days
191556 days
191623 days
191770 days
191845 days
191981 days
192024 days
192144 days
192249 days
192337 days
192452 days
192532 days
192652 days
192734 days
192874 days
192992 days
193071 days
193167 days
193224 days
193324 days
193434 days
193512 days
193651 days
193713 days
193836 days
193939 days
194041 days
194119 days
194223 days
194327 days
194429 days
194537 days
194651 days
194726 days
194819 days
194931 days
195031 days
195152 days
195244 days
195327 days
195424 days
195548 days
195626 days
195740 days
195851 days
195951 days
196036 days
196129 days
196237 days
196319 days
196420 days
196532 days
196642 days
196766 days
196816 days
196943 days
197034 days
197142 days
197234 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Detroit falls on 8 May and the median first autumn frost on 28 September, which leaves a median of 142 days between them.

Fitted over all years, the growing season changes by +6.8 days per decade at this station.

Frost dates and growing season at Detroit
MeasureMedian, all yearsEarliest periodRecent period (1895 to 1971)Recent against earliestFitted trend
Last spring frost8 Mayn/a8 Mayn/a-0.3 days per decade
First autumn frost28 Septembern/a28 Septembern/a+6.5 days per decade
Growing days142 daysn/a142 daysn/a+6.8 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

53 years, 1910 to 1971

A day with at least 79.5 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 137.1 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Detroit: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years79.5 mm (3.1 in)
5 years98.1 mm (3.9 in)
10 years109.0 mm (4.3 in)
25 years121.4 mm (4.8 in)
50 years129.6 mm (5.1 in)
100 years137.1 mm (5.4 in)Longer than the 53 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, 53 years of values from 1910 to 1971.

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: 136.4 mm (5.4 in) in 1965; 121.9 mm (4.8 in) in 1921; 117.1 mm (4.6 in) in 1964.

Download the Data

  • Data for Detroit standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Detroit 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).