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Arapaho Weather Records (USC00340277)

Record envelope, standing records and threshold days for Arapaho (USC00340277), Oklahoma, United States, with 38 years of record.

Key Facts for Arapaho

  • Arapaho (USC00340277) is a weather station in Oklahoma, United States at 35.58 latitude and -98.97 longitude, n/a above sea level.
  • The station reports from 1893 to 1930, 38 years of record.
  • 1,464 records set at Arapaho still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Arapaho set a daily record high minimum temperature of 7.2 C (45.0 F) on 10 December 1930.

About the Station

  • Location: Oklahoma, United States, 35.58 latitude, -98.97 longitude.
  • Elevation: n/a.
  • Period of record: 1893 to 1930, 38 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 Arapaho, with 2026 drawn through them The band shows the record high and record low for each calendar day at Arapaho. 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 Arapaho. 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 Arapaho, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan32.2 C (90.0 F)-24.4 C (-11.9 F)n/an/a
Feb37.2 C (99.0 F)-27.8 C (-18.0 F)n/an/a
Mar39.4 C (102.9 F)-18.3 C (-0.9 F)n/an/a
Apr36.7 C (98.1 F)-6.1 C (21.0 F)n/an/a
May42.2 C (108.0 F)-2.2 C (28.0 F)n/an/a
Jun45.0 C (113.0 F)6.1 C (43.0 F)n/an/a
Jul44.4 C (111.9 F)6.7 C (44.1 F)n/an/a
Aug43.9 C (111.0 F)6.7 C (44.1 F)n/an/a
Sep41.7 C (107.1 F)0.0 C (32.0 F)n/an/a
Oct37.2 C (99.0 F)-11.1 C (12.0 F)n/an/a
Nov32.2 C (90.0 F)-14.4 C (6.1 F)n/an/a
Dec28.9 C (84.0 F)-23.3 C (-9.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Arapaho by the year they were set 1,464 records at Arapaho still stand. 1895 holds the most, with 70. 0204060801893: 221894: 531895: 701896: 571897: 351898: 331899: 521900: 211901: 411902: 361903: 231904: 271905: 311906: 351907: 441908: 341909: 261910: 571911: 641912: 431913: 461914: 301915: 381916: 411917: 571918: 561919: 291920: 281921: 431922: 301923: 281924: 351925: 571926: 171927: 391928: 381929: 131930: 351893189719011905190919131917192119251929
1,464 records at Arapaho still stand. 1895 holds the most, with 70.
Standing records at Arapaho by the year they were set
Year setStanding records
189322
189453
189570
189657
189735
189833
189952
190021
190141
190236
190323
190427
190531
190635
190744
190834
190926
191057
191164
191243
191346
191430
191538
191641
191757
191856
191929
192028
192143
192230
192328
192435
192557
192617
192739
192838
192913
193035

Wettest Day of Each Month

Jun: 127.0 mm (5.0 in)
Record daily precipitation for each month at Arapaho The wettest day on record for each calendar month at Arapaho. The most was 127.0 mm (5.0 in) on 5 June 1908. 050100150 Jan: 53.3 mm (2.1 in), 9 January 1907 Jan Feb: 64.5 mm (2.5 in), 9 February 1898 Feb Mar: 126.0 mm (5.0 in), 27 March 1929 Mar Apr: 84.3 mm (3.3 in), 27 April 1897 Apr May: 82.0 mm (3.2 in), 6 May 1897 May Jun: 127.0 mm (5.0 in), 5 June 1908 Jun Jul: 108.0 mm (4.3 in), 7 July 1904 Jul Aug: 91.4 mm (3.6 in), 12 August 1924 Aug Sep: 87.4 mm (3.4 in), 14 September 1906 Sep Oct: 121.9 mm (4.8 in), 3 October 1907 Oct Nov: 80.3 mm (3.2 in), 7 November 1920 Nov Dec: 52.3 mm (2.1 in), 30 December 1896 Dec
The wettest day on record for each calendar month at Arapaho. The most was 127.0 mm (5.0 in) on 5 June 1908.
Record daily precipitation for each month at Arapaho
MonthRecord daily precipitation (mm)Date
Jan53.3 mm (2.1 in)9 January 1907
Feb64.5 mm (2.5 in)9 February 1898
Mar126.0 mm (5.0 in)27 March 1929
Apr84.3 mm (3.3 in)27 April 1897
May82.0 mm (3.2 in)6 May 1897
Jun127.0 mm (5.0 in)5 June 1908
Jul108.0 mm (4.3 in)7 July 1904
Aug91.4 mm (3.6 in)12 August 1924
Sep87.4 mm (3.4 in)14 September 1906
Oct121.9 mm (4.8 in)3 October 1907
Nov80.3 mm (3.2 in)7 November 1920
Dec52.3 mm (2.1 in)30 December 1896

Period of Record Coverage

1893 to 1930
Days with data per year at Arapaho 38 years of record at Arapaho, 1893 to 1930. 8 years have data for under 90 percent of days and are left out of rankings: 1893, 1902, 1903, 1908, 1909, 1926, 1928, 1929. 1893: 69 of 365 days1894: 350 of 365 days1895: 357 of 365 days1896: 359 of 366 days1897: 358 of 365 days1898: 355 of 365 days1899: 356 of 365 days1900: 364 of 365 days1901: 364 of 365 days1902: 273 of 365 days1903: 214 of 365 days1904: 351 of 366 days1905: 362 of 365 days1906: 359 of 365 days1907: 362 of 365 days1908: 216 of 366 days1909: 244 of 365 days1910: 354 of 365 days1911: 353 of 365 days1912: 356 of 366 days1913: 357 of 365 days1914: 364 of 365 days1915: 365 of 365 days1916: 365 of 366 days1917: 364 of 365 days1918: 365 of 365 days1919: 333 of 365 days1920: 362 of 366 days1921: 360 of 365 days1922: 330 of 365 days1923: 357 of 365 days1924: 330 of 366 days1925: 331 of 365 days1926: 328 of 365 days1927: 358 of 365 days1928: 326 of 366 days1929: 298 of 365 days1930: 361 of 365 days18951900190519101915192019251930
38 years of record at Arapaho, 1893 to 1930. 8 years have data for under 90 percent of days and are left out of rankings: 1893, 1902, 1903, 1908, 1909, 1926, 1928, 1929.
Days with data per year at Arapaho
YearDays with dataShare of yearComplete
18936919%No
189435096%Yes
189535798%Yes
189635998%Yes
189735898%Yes
189835597%Yes
189935698%Yes
1900364100%Yes
1901364100%Yes
190227375%No
190321459%No
190435196%Yes
190536299%Yes
190635998%Yes
190736299%Yes
190821659%No
190924467%No
191035497%Yes
191135397%Yes
191235697%Yes
191335798%Yes
1914364100%Yes
1915365100%Yes
1916365100%Yes
1917364100%Yes
1918365100%Yes
191933391%Yes
192036299%Yes
192136099%Yes
192233090%Yes
192335798%Yes
192433090%Yes
192533191%Yes
192632890%No
192735898%Yes
192832689%No
192929882%No
193036199%Yes

Latest Records

20
Latest records at Arapaho
DateStationRecordValueBeat old record byOld record stoodSignificance
10 December 1930Arapaho, USdaily high min7.2 C (45.0 F)3.3 C (5.9 F)15 years13 of 100 (Routine)
18 November 1930Arapaho, USdaily high max26.7 C (80.1 F)2.3 C (4.1 F)25 years13 of 100 (Routine)
23 October 1930Arapaho, USdaily low max10.0 C (50.0 F)1.7 C (3.1 F)24 years12 of 100 (Routine)
22 October 1930Arapaho, USdaily low max7.8 C (46.0 F)2.2 C (4.0 F)24 years13 of 100 (Routine)
21 October 1930Arapaho, USdaily low max7.2 C (45.0 F)5.0 C (9.0 F)19 years16 of 100 (Routine)
20 October 1930Arapaho, USdaily low max10.0 C (50.0 F)1.1 C (2.0 F)31 years13 of 100 (Routine)
6 October 1930Arapaho, USdaily low max16.7 C (62.1 F)1.1 C (2.0 F)25 years11 of 100 (Routine)
5 October 1930Arapaho, USdaily low max17.8 C (64.0 F)2.8 C (5.0 F)34 years17 of 100 (Routine)
4 October 1930Arapaho, USdaily rain17.8 mm (0.7 in)7.1 mm (0.28 in)16 years12 of 100 (Routine)
23 September 1930Arapaho, USdaily high min20.6 C (69.1 F)1.2 C (2.2 F)13 years9 of 100 (Routine)
13 September 1930Arapaho, USdaily high max39.4 C (102.9 F)1.1 C (2.0 F)19 years10 of 100 (Routine)
12 September 1930Arapaho, USdaily high max40.0 C (104.0 F)2.2 C (4.0 F)36 years18 of 100 (Routine)
1 September 1930Arapaho, USdaily high min25.6 C (78.1 F)1.2 C (2.2 F)8 years7 of 100 (Routine)
15 August 1930Arapaho, USdaily high max (Tie)41.1 C (106.0 F)tie7 years1 of 100 (Routine)
4 August 1930Arapaho, USdaily high max (Tie)42.2 C (108.0 F)tie12 years1 of 100 (Routine)
3 August 1930Arapaho, USdaily high max42.8 C (109.0 F)0.6 C (1.1 F)12 years7 of 100 (Routine)
16 July 1930Arapaho, USdaily low min (Tie)15.6 C (60.1 F)tie31 years3 of 100 (Routine)
15 July 1930Arapaho, USdaily low min13.9 C (57.0 F)2.2 C (4.0 F)31 years20 of 100 (Routine)
4 July 1930Arapaho, USdaily high min (Tie)22.8 C (73.0 F)tie4 years1 of 100 (Routine)
1 July 1930Arapaho, USdaily low max27.2 C (81.0 F)2.2 C (4.0 F)16 years13 of 100 (Routine)

Climate Trend

22 complete years, 1895 to 1930
Annual mean temperature at Arapaho as warming stripes, 1895 to 1930 One stripe for each of 22 complete years at Arapaho, 1895 to 1930. Blue stripes are years cooler than the station's own mean of 15.5 C (60.0 F); red stripes are warmer. The coolest year was 1895, at 13.9 C (57.0 F), and the warmest was 1911, at 17.0 C (62.6 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1895: 13.9 C, -1.6 C from the station mean1897: 15.0 C, -0.6 C from the station mean1898: 14.6 C, -0.9 C from the station mean1899: 15.2 C, -0.4 C from the station mean1900: 15.8 C, +0.3 C from the station mean1901: 16.0 C, +0.5 C from the station mean1904: 15.8 C, +0.2 C from the station mean1905: 14.6 C, -0.9 C from the station mean1906: 14.8 C, -0.8 C from the station mean1907: 15.8 C, +0.3 C from the station mean1911: 17.0 C, +1.5 C from the station mean1913: 15.3 C, -0.2 C from the station mean1914: 16.2 C, +0.7 C from the station mean1915: 15.2 C, -0.3 C from the station mean1916: 16.2 C, +0.7 C from the station mean1917: 15.1 C, -0.4 C from the station mean1918: 16.3 C, +0.8 C from the station mean1920: 15.3 C, -0.2 C from the station mean1921: 16.7 C, +1.2 C from the station mean1923: 15.8 C, +0.2 C from the station mean1927: 15.7 C, +0.1 C from the station mean1930: 15.7 C, +0.1 C from the station mean18951900190519101915192019251930
One stripe for each of 22 complete years at Arapaho, 1895 to 1930. Blue stripes are years cooler than the station's own mean of 15.5 C (60.0 F); red stripes are warmer. The coolest year was 1895, at 13.9 C (57.0 F), and the warmest was 1911, at 17.0 C (62.6 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Arapaho as warming stripes, 1895 to 1930
YearAnnual mean temperatureDifference from the station mean
189513.9 C-1.65 C
189715.0 C-0.60 C
189814.6 C-0.93 C
189915.2 C-0.37 C
190015.8 C+0.25 C
190116.0 C+0.46 C
190415.8 C+0.22 C
190514.6 C-0.94 C
190614.8 C-0.76 C
190715.8 C+0.27 C
191117.0 C+1.46 C
191315.3 C-0.22 C
191416.2 C+0.67 C
191515.2 C-0.33 C
191616.2 C+0.68 C
191715.1 C-0.41 C
191816.3 C+0.78 C
192015.3 C-0.21 C
192116.7 C+1.17 C
192315.8 C+0.21 C
192715.7 C+0.14 C
193015.7 C+0.11 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

1893 to 1930
Yearly extremes at Arapaho: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)191141.7 C (107.1 F)38
Coldest night (TNn)-27.8 C (-18.0 F)1899-17.8 C (0.0 F)38
Wettest day (Rx1day)127.0 mm (5.0 in)190868.9 mm (2.7 in)38
Wettest five days (Rx5day)212.1 mm (8.4 in)1907104.9 mm (4.1 in)38
Longest dry spell (CDD)97 days192134 days38

Hottest day (TXx)

Hottest day (TXx) at Arapaho by year The hottest day of the year at Arapaho, 1893 to 1930. The record is 45.0 C (113.0 F) in 1911, marked on the chart; the median year is 41.7 C (107.1 F). 3638404244461900191019201930Record: 45.0 C (113.0 F) in 1911
The hottest day of the year at Arapaho, 1893 to 1930. The record is 45.0 C (113.0 F) in 1911, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at Arapaho by year
YearHottest day (TXx)
189338.9 C (102.0 F)
189441.7 C (107.1 F)
189538.9 C (102.0 F)
189642.2 C (108.0 F)
189741.7 C (107.1 F)
189838.9 C (102.0 F)
189942.8 C (109.0 F)
190041.7 C (107.1 F)
190143.9 C (111.0 F)
190243.3 C (109.9 F)
190341.7 C (107.1 F)
190440.6 C (105.1 F)
190540.6 C (105.1 F)
190637.8 C (100.0 F)
190741.1 C (106.0 F)
190837.8 C (100.0 F)
190943.9 C (111.0 F)
191042.8 C (109.0 F)
191145.0 C (113.0 F)
191241.1 C (106.0 F)
191343.3 C (109.9 F)
191444.4 C (111.9 F)
191537.8 C (100.0 F)
191642.8 C (109.0 F)
191743.3 C (109.9 F)
191843.9 C (111.0 F)
191940.6 C (105.1 F)
192044.4 C (111.9 F)
192141.1 C (106.0 F)
192243.9 C (111.0 F)
192342.8 C (109.0 F)
192443.3 C (109.9 F)
192542.2 C (108.0 F)
192640.6 C (105.1 F)
192739.4 C (102.9 F)
192838.3 C (100.9 F)
192941.7 C (107.1 F)
193042.8 C (109.0 F)

Coldest night (TNn)

Coldest night (TNn) at Arapaho by year The coldest night of the year at Arapaho, 1893 to 1930. The record is -27.8 C (-18.0 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F). -30-20-100101900191019201930Record: -27.8 C (-18.0 F) in 1899
The coldest night of the year at Arapaho, 1893 to 1930. The record is -27.8 C (-18.0 F) in 1899, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at Arapaho by year
YearColdest night (TNn)
18936.1 C (43.0 F)
1894-21.1 C (-6.0 F)
1895-24.4 C (-11.9 F)
1896-14.4 C (6.1 F)
1897-17.2 C (1.0 F)
1898-16.1 C (3.0 F)
1899-27.8 C (-18.0 F)
1900-15.6 C (3.9 F)
1901-23.3 C (-9.9 F)
1902-22.8 C (-9.0 F)
1903-13.9 C (7.0 F)
1904-18.9 C (-2.0 F)
1905-26.7 C (-16.1 F)
1906-15.6 C (3.9 F)
1907-13.9 C (7.0 F)
1908-12.2 C (10.0 F)
1909-12.8 C (9.0 F)
1910-15.0 C (5.0 F)
1911-23.9 C (-11.0 F)
1912-23.9 C (-11.0 F)
1913-19.4 C (-2.9 F)
1914-17.8 C (0.0 F)
1915-13.3 C (8.1 F)
1916-22.8 C (-9.0 F)
1917-17.8 C (0.0 F)
1918-21.1 C (-6.0 F)
1919-17.2 C (1.0 F)
1920-14.4 C (6.1 F)
1921-17.8 C (0.0 F)
1922-17.8 C (0.0 F)
1923-13.9 C (7.0 F)
1924-17.2 C (1.0 F)
1925-15.0 C (5.0 F)
1926-16.1 C (3.0 F)
1927-17.8 C (0.0 F)
1928-17.8 C (0.0 F)
1929-22.2 C (-8.0 F)
1930-24.4 C (-11.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Arapaho by year The wettest day of the year at Arapaho, 1893 to 1930. The record is 127.0 mm (5.0 in) in 1908, marked on the chart; the median year is 68.9 mm (2.7 in). 2550751001251501900191019201930Record: 127.0 mm (5.0 in) in 1908
The wettest day of the year at Arapaho, 1893 to 1930. The record is 127.0 mm (5.0 in) in 1908, marked on the chart; the median year is 68.9 mm (2.7 in).
Wettest day (Rx1day) at Arapaho by year
YearWettest day (Rx1day)
189358.2 mm (2.3 in)
189490.7 mm (3.6 in)
189547.0 mm (1.9 in)
189663.2 mm (2.5 in)
189784.3 mm (3.3 in)
189895.3 mm (3.8 in)
189969.1 mm (2.7 in)
190061.2 mm (2.4 in)
190178.7 mm (3.1 in)
190271.1 mm (2.8 in)
190332.8 mm (1.3 in)
1904108.0 mm (4.3 in)
190563.5 mm (2.5 in)
190687.4 mm (3.4 in)
1907121.9 mm (4.8 in)
1908127.0 mm (5.0 in)
190961.0 mm (2.4 in)
191045.2 mm (1.8 in)
191155.4 mm (2.2 in)
191259.4 mm (2.3 in)
191362.2 mm (2.4 in)
191443.4 mm (1.7 in)
191580.3 mm (3.2 in)
191679.8 mm (3.1 in)
191753.3 mm (2.1 in)
191844.5 mm (1.8 in)
191949.5 mm (1.9 in)
192080.3 mm (3.2 in)
192181.8 mm (3.2 in)
192272.9 mm (2.9 in)
192391.4 mm (3.6 in)
192491.4 mm (3.6 in)
192553.3 mm (2.1 in)
1926101.6 mm (4.0 in)
192768.6 mm (2.7 in)
192867.1 mm (2.6 in)
1929126.0 mm (5.0 in)
193067.3 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Arapaho by year The wettest five days of the year at Arapaho, 1893 to 1930. The record is 212.1 mm (8.4 in) in 1907, marked on the chart; the median year is 104.9 mm (4.1 in). 501001502002501900191019201930Record: 212.1 mm (8.4 in) in 1907
The wettest five days of the year at Arapaho, 1893 to 1930. The record is 212.1 mm (8.4 in) in 1907, marked on the chart; the median year is 104.9 mm (4.1 in).
Wettest five days (Rx5day) at Arapaho by year
YearWettest five days (Rx5day)
189362.3 mm (2.5 in)
189490.7 mm (3.6 in)
1895106.2 mm (4.2 in)
189674.6 mm (2.9 in)
1897164.1 mm (6.5 in)
1898202.7 mm (8.0 in)
1899113.3 mm (4.5 in)
190093.0 mm (3.7 in)
1901185.6 mm (7.3 in)
1902191.2 mm (7.5 in)
190361.7 mm (2.4 in)
190468.1 mm (2.7 in)
190585.1 mm (3.4 in)
1906111.3 mm (4.4 in)
1907212.1 mm (8.4 in)
1908205.5 mm (8.1 in)
1909140.5 mm (5.5 in)
191068.3 mm (2.7 in)
1911107.0 mm (4.2 in)
191262.4 mm (2.5 in)
191377.0 mm (3.0 in)
191466.0 mm (2.6 in)
191594.8 mm (3.7 in)
191692.0 mm (3.6 in)
191760.9 mm (2.4 in)
191894.5 mm (3.7 in)
191995.5 mm (3.8 in)
1920150.7 mm (5.9 in)
1921101.8 mm (4.0 in)
1922105.7 mm (4.2 in)
1923157.4 mm (6.2 in)
1924104.1 mm (4.1 in)
192571.2 mm (2.8 in)
1926139.7 mm (5.5 in)
1927152.2 mm (6.0 in)
1928106.5 mm (4.2 in)
1929129.5 mm (5.1 in)
1930118.1 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Arapaho by year The longest dry spell of the year at Arapaho, 1893 to 1930. The record is 97 days in 1921, marked on the chart; the median year is 34 days. 0204060801001900191019201930Record: 97 days in 1921
The longest dry spell of the year at Arapaho, 1893 to 1930. The record is 97 days in 1921, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Arapaho by year
YearLongest dry spell (CDD)
189322 days
189435 days
189522 days
189631 days
189722 days
189829 days
189931 days
190028 days
190126 days
190241 days
190331 days
190463 days
190522 days
190632 days
190734 days
190838 days
190929 days
191072 days
191133 days
191243 days
191324 days
191448 days
191534 days
191633 days
191766 days
191825 days
191918 days
192037 days
192197 days
192222 days
192356 days
192440 days
192555 days
192654 days
192766 days
192839 days
192927 days
193052 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Arapaho falls on 11 April and the median first autumn frost on 20 October, which leaves a median of 195 days between them.

Frost dates and growing season at Arapaho
MeasureMedian, all yearsEarliest periodRecent period (1895 to 1930)Recent against earliestFitted trend
Last spring frost11 Apriln/a11 Apriln/an/a
First autumn frost20 Octobern/a20 Octobern/an/a
Growing days195 daysn/a195 daysn/an/a

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

30 years, 1894 to 1930

A day with at least 71.2 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 135.4 mm (5.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Arapaho: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years71.2 mm (2.8 in)
5 years91.0 mm (3.6 in)
10 years103.0 mm (4.1 in)
25 years117.0 mm (4.6 in)
50 years126.5 mm (5.0 in)Longer than the 30 years of record
100 years135.4 mm (5.3 in)Longer than the 30 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, 30 years of values from 1894 to 1930.

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: 126.0 mm (5.0 in) in 1929; 121.9 mm (4.8 in) in 1907; 101.6 mm (4.0 in) in 1926.

Download the Data

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