Built 2026-10-18 (18 October 2026)

Columbus Basin Weather Records (USS0008M10S)

Record envelope, standing records and threshold days for Columbus Basin (USS0008M10S), Colorado, United States, with 33 years of record.

Key Facts for Columbus Basin

  • Columbus Basin (USS0008M10S) is a weather station in Colorado, United States at 37.44 latitude and -108.02 longitude, 3,287 m (10,785 ft) above sea level.
  • The station reports from 1994 to 2026, 33 years of record.
  • 1,464 records set at Columbus Basin still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Columbus Basin tied a daily record high minimum temperature of 4.0 C (39.2 F) on 6 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Colorado, United States, 37.44 latitude, -108.02 longitude.
  • Elevation: 3,287 m (10,785 ft).
  • Period of record: 1994 to 2026, 33 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Columbus Basin, with 2026 drawn through them The band shows the record high and record low for each calendar day at Columbus Basin. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Columbus Basin. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Columbus Basin, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan9.5 C (49.1 F)-26.7 C (-16.1 F)5.3 C (41.5 F)-18.3 C (-0.9 F)
Feb16.1 C (61.0 F)-28.4 C (-19.1 F)8.8 C (47.8 F)-19.5 C (-3.1 F)
Mar18.4 C (65.1 F)-24.0 C (-11.2 F)16.2 C (61.2 F)-15.3 C (4.5 F)
Apr17.3 C (63.1 F)-19.5 C (-3.1 F)10.7 C (51.3 F)-10.0 C (14.0 F)
May24.4 C (75.9 F)-14.5 C (5.9 F)18.2 C (64.8 F)-6.2 C (20.8 F)
Jun26.0 C (78.8 F)-7.7 C (18.1 F)22.4 C (72.3 F)2.2 C (36.0 F)
Jul27.3 C (81.1 F)1.5 C (34.7 F)23.7 C (74.7 F)3.1 C (37.6 F)
Aug25.3 C (77.5 F)0.8 C (33.4 F)23.6 C (74.5 F)3.9 C (39.0 F)
Sep22.8 C (73.0 F)-9.5 C (14.9 F)19.1 C (66.4 F)1.4 C (34.5 F)
Oct19.0 C (66.2 F)-19.4 C (-2.9 F)16.0 C (60.8 F)-1.2 C (29.8 F)
Nov14.9 C (58.8 F)-22.6 C (-8.7 F)n/an/a
Dec10.0 C (50.0 F)-26.3 C (-15.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Columbus Basin by the year they were set 1,464 records at Columbus Basin still stand. 2004 holds the most, with 91. 02550751001994: 131995: 661996: 641997: 461998: 361999: 562000: 572001: 442002: 652003: 612004: 912005: 322006: 392007: 312008: 342009: 352010: 412011: 452012: 262013: 482014: 242015: 412016: 422017: 392018: 392019: 372020: 552021: 392022: 402023: 482024: 242025: 502026: 56199419982002200620102014201820222026
1,464 records at Columbus Basin still stand. 2004 holds the most, with 91.
Standing records at Columbus Basin by the year they were set
Year setStanding records
199413
199566
199664
199746
199836
199956
200057
200144
200265
200361
200491
200532
200639
200731
200834
200935
201041
201145
201226
201348
201424
201541
201642
201739
201839
201937
202055
202139
202240
202348
202424
202550
202656

All-Time Record Progression

1 new records
When Columbus Basin set new all-time records 1 all-time records were set at Columbus Basin between 17 June 2026 and 17 June 2026. Each dot is a new record. Record high minimum temperature17 June 2026: Record high minimum temperature 12.4 C (54.3 F)
1 all-time records were set at Columbus Basin between 17 June 2026 and 17 June 2026. Each dot is a new record.
When Columbus Basin set new all-time records
DateKindDetail
2026-06-17Record high minimum temperatureRecord high minimum temperature 12.4 C (54.3 F)

Wettest Day of Each Month

Jul: 88.9 mm (3.5 in)
Record daily precipitation for each month at Columbus Basin The wettest day on record for each calendar month at Columbus Basin. The most was 88.9 mm (3.5 in) on 18 July 2021. 0255075100 Jan: 76.2 mm (3.0 in), 11 January 2005 Jan Feb: 61.0 mm (2.4 in), 20 February 1996 Feb Mar: 76.2 mm (3.0 in), 21 March 2000 Mar Apr: 76.2 mm (3.0 in), 3 April 2004 Apr May: 35.6 mm (1.4 in), 3 May 1999 May Jun: 58.4 mm (2.3 in), 20 June 2024 Jun Jul: 88.9 mm (3.5 in), 18 July 2021 Jul Aug: 73.7 mm (2.9 in), 31 August 2008 Aug Sep: 68.6 mm (2.7 in), 9 September 2003 Sep Oct: 83.8 mm (3.3 in), 6 October 2006 Oct Nov: 71.1 mm (2.8 in), 7 November 2020 Nov Dec: 71.1 mm (2.8 in), 24 December 2021 Dec
The wettest day on record for each calendar month at Columbus Basin. The most was 88.9 mm (3.5 in) on 18 July 2021.
Record daily precipitation for each month at Columbus Basin
MonthRecord daily precipitation (mm)Date
Jan76.2 mm (3.0 in)11 January 2005
Feb61.0 mm (2.4 in)20 February 1996
Mar76.2 mm (3.0 in)21 March 2000
Apr76.2 mm (3.0 in)3 April 2004
May35.6 mm (1.4 in)3 May 1999
Jun58.4 mm (2.3 in)20 June 2024
Jul88.9 mm (3.5 in)18 July 2021
Aug73.7 mm (2.9 in)31 August 2008
Sep68.6 mm (2.7 in)9 September 2003
Oct83.8 mm (3.3 in)6 October 2006
Nov71.1 mm (2.8 in)7 November 2020
Dec71.1 mm (2.8 in)24 December 2021

Period of Record Coverage

1994 to 2026
Days with data per year at Columbus Basin 33 years of record at Columbus Basin, 1994 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 1995, 2026. 1994: 101 of 365 days1995: 296 of 365 days1996: 361 of 366 days1997: 361 of 365 days1998: 365 of 365 days1999: 363 of 365 days2000: 363 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 343 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 339 of 365 days2020: 365 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 364 of 365 days2024: 365 of 366 days2025: 364 of 365 days2026: 286 of 365 days1995200020052010201520202025
33 years of record at Columbus Basin, 1994 to 2026. 3 years have data for under 90 percent of days and are left out of rankings: 1994, 1995, 2026.
Days with data per year at Columbus Basin
YearDays with dataShare of yearComplete
199410128%No
199529681%No
199636199%Yes
199736199%Yes
1998365100%Yes
199936399%Yes
200036399%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
201034394%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016365100%Yes
2017365100%Yes
2018365100%Yes
201933993%Yes
2020365100%Yes
2021365100%Yes
2022364100%Yes
2023364100%Yes
2024365100%Yes
2025364100%Yes
202628678%No

Latest Records

20
Latest records at Columbus Basin
DateStationRecordValueBeat old record byOld record stoodSignificance
6 October 2026Columbus Basin, USdaily high min (Tie, Provisional)4.0 C (39.2 F)tie5 years1 of 100 (Routine)
25 September 2026Columbus Basin, USdaily rain (Provisional)22.9 mm (0.9 in)20.4 mm (0.8 in)28 years20 of 100 (Routine)
24 September 2026Columbus Basin, USdaily rain (Provisional)25.4 mm (1.0 in)20.3 mm (0.8 in)27 years30 of 100 (Routine)
17 September 2026Columbus Basin, USmonthly rain (Provisional)76.2 mm (3.0 in)7.6 mm (0.30 in)23 years26 of 100 (Routine)
17 September 2026Columbus Basin, USdaily high min (Provisional)7.1 C (44.8 F)0.6 C (1.1 F)8 years7 of 100 (Routine)
26 August 2026Columbus Basin, USdaily high min (Tie, Provisional)7.7 C (45.9 F)tie19 years2 of 100 (Routine)
19 August 2026Columbus Basin, USdaily high min (Provisional)9.2 C (48.6 F)0.4 C (0.7 F)5 years6 of 100 (Routine)
11 August 2026Columbus Basin, USdaily high min9.2 C (48.6 F)1.0 C (1.8 F)13 years12 of 100 (Routine)
10 August 2026Columbus Basin, USdaily high min10.0 C (50.0 F)0.9 C (1.6 F)0 years8 of 100 (Routine)
9 August 2026Columbus Basin, USdaily high max23.4 C (74.1 F)0.9 C (1.6 F)23 years12 of 100 (Routine)
9 August 2026Columbus Basin, USdaily high min9.2 C (48.6 F)0.1 C (0.2 F)0 years3 of 100 (Routine)
7 August 2026Columbus Basin, USdaily high max23.1 C (73.6 F)0.9 C (1.6 F)28 years14 of 100 (Routine)
7 August 2026Columbus Basin, USdaily high min9.9 C (49.8 F)1.0 C (1.8 F)3 years8 of 100 (Routine)
6 August 2026Columbus Basin, USdaily high min10.3 C (50.5 F)0.8 C (1.4 F)11 years10 of 100 (Routine)
6 August 2026Columbus Basin, USdaily high max23.5 C (74.3 F)1.1 C (2.0 F)8 years8 of 100 (Routine)
5 August 2026Columbus Basin, USdaily high max23.6 C (74.5 F)0.6 C (1.1 F)23 years11 of 100 (Routine)
4 August 2026Columbus Basin, USmonthly high min12.3 C (54.1 F)0.7 C (1.3 F)0 years17 of 100 (Routine)
4 August 2026Columbus Basin, USdaily high max22.9 C (73.2 F)1.2 C (2.2 F)21 years13 of 100 (Routine)
3 August 2026Columbus Basin, USmonthly high min11.6 C (52.9 F)0.6 C (1.1 F)0 years16 of 100 (Routine)
3 August 2026Columbus Basin, USdaily high max23.3 C (73.9 F)1.3 C (2.3 F)25 years14 of 100 (Routine)

Climate Trend

28 complete years, 1996 to 2025
Annual mean temperature at Columbus Basin as warming stripes, 1996 to 2025 One stripe for each of 28 complete years at Columbus Basin, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 2.2 C (35.9 F); red stripes are warmer. The coolest year was 1998, at 1.4 C (34.4 F), and the warmest was 2017, at 3.1 C (37.5 F). The strongest colour marks a difference of 0.9 C (1.6 F). 1996: 1.9 C, -0.3 C from the station mean1997: 1.6 C, -0.6 C from the station mean1998: 1.4 C, -0.8 C from the station mean1999: 2.1 C, -0.1 C from the station mean2000: 2.2 C, 0.0 C from the station mean2001: 2.4 C, +0.3 C from the station mean2002: 2.3 C, +0.1 C from the station mean2003: 2.7 C, +0.5 C from the station mean2004: 1.8 C, -0.4 C from the station mean2005: 2.0 C, -0.2 C from the station mean2006: 1.8 C, -0.4 C from the station mean2007: 2.3 C, +0.1 C from the station mean2008: 1.5 C, -0.7 C from the station mean2009: 1.8 C, -0.4 C from the station mean2011: 1.7 C, -0.5 C from the station mean2012: 3.0 C, +0.8 C from the station mean2013: 1.7 C, -0.5 C from the station mean2014: 2.3 C, +0.1 C from the station mean2015: 2.6 C, +0.4 C from the station mean2016: 2.5 C, +0.3 C from the station mean2017: 3.1 C, +0.9 C from the station mean2018: 2.7 C, +0.5 C from the station mean2020: 3.0 C, +0.8 C from the station mean2021: 2.8 C, +0.6 C from the station mean2022: 2.1 C, -0.1 C from the station mean2023: 1.6 C, -0.6 C from the station mean2024: 2.1 C, -0.1 C from the station mean2025: 2.5 C, +0.3 C from the station mean1996200020052010201520202025
One stripe for each of 28 complete years at Columbus Basin, 1996 to 2025. Blue stripes are years cooler than the station's own mean of 2.2 C (35.9 F); red stripes are warmer. The coolest year was 1998, at 1.4 C (34.4 F), and the warmest was 2017, at 3.1 C (37.5 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Columbus Basin as warming stripes, 1996 to 2025
YearAnnual mean temperatureDifference from the station mean
19961.9 C-0.33 C
19971.6 C-0.59 C
19981.4 C-0.83 C
19992.1 C-0.08 C
20002.2 C+0.02 C
20012.4 C+0.25 C
20022.3 C+0.14 C
20032.7 C+0.53 C
20041.8 C-0.43 C
20052.0 C-0.18 C
20061.8 C-0.36 C
20072.3 C+0.06 C
20081.5 C-0.70 C
20091.8 C-0.40 C
20111.7 C-0.54 C
20123.0 C+0.81 C
20131.7 C-0.50 C
20142.3 C+0.13 C
20152.6 C+0.44 C
20162.5 C+0.26 C
20173.1 C+0.87 C
20182.7 C+0.52 C
20203.0 C+0.83 C
20212.8 C+0.57 C
20222.1 C-0.08 C
20231.6 C-0.59 C
20242.1 C-0.11 C
20252.5 C+0.26 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

1994 to 2026
Yearly extremes at Columbus Basin: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)27.3 C (81.1 F)200323.5 C (74.3 F)33
Coldest night (TNn)-28.4 C (-19.1 F)2011-22.0 C (-7.6 F)33
Wettest day (Rx1day)88.9 mm (3.5 in)202161.0 mm (2.4 in)33
Wettest five days (Rx5day)256.6 mm (10.1 in)2005116.9 mm (4.6 in)33
Longest dry spell (CDD)60 days199929 days33

Hottest day (TXx)

Hottest day (TXx) at Columbus Basin by year The hottest day of the year at Columbus Basin, 1994 to 2026. The record is 27.3 C (81.1 F) in 2003, marked on the chart; the median year is 23.5 C (74.3 F). 17.52022.52527.5200020102020Record: 27.3 C (81.1 F) in 2003
The hottest day of the year at Columbus Basin, 1994 to 2026. The record is 27.3 C (81.1 F) in 2003, marked on the chart; the median year is 23.5 C (74.3 F).
Hottest day (TXx) at Columbus Basin by year
YearHottest day (TXx)
199419.0 C (66.2 F)
199522.9 C (73.2 F)
199623.2 C (73.8 F)
199723.7 C (74.7 F)
199823.5 C (74.3 F)
199922.5 C (72.5 F)
200023.4 C (74.1 F)
200124.1 C (75.4 F)
200225.3 C (77.5 F)
200327.3 C (81.1 F)
200422.9 C (73.2 F)
200523.8 C (74.8 F)
200623.2 C (73.8 F)
200724.8 C (76.6 F)
200822.8 C (73.0 F)
200923.7 C (74.7 F)
201025.0 C (77.0 F)
201122.0 C (71.6 F)
201224.0 C (75.2 F)
201324.4 C (75.9 F)
201424.2 C (75.6 F)
201522.7 C (72.9 F)
201624.3 C (75.7 F)
201723.1 C (73.6 F)
201823.4 C (74.1 F)
201922.6 C (72.7 F)
202024.8 C (76.6 F)
202126.0 C (78.8 F)
202223.1 C (73.6 F)
202325.6 C (78.1 F)
202422.4 C (72.3 F)
202522.8 C (73.0 F)
202623.7 C (74.7 F)

Coldest night (TNn)

Coldest night (TNn) at Columbus Basin by year The coldest night of the year at Columbus Basin, 1994 to 2026. The record is -28.4 C (-19.1 F) in 2011, marked on the chart; the median year is -22.0 C (-7.6 F). -30-27.5-25-22.5-20-17.5200020102020Record: -28.4 C (-19.1 F) in 2011
The coldest night of the year at Columbus Basin, 1994 to 2026. The record is -28.4 C (-19.1 F) in 2011, marked on the chart; the median year is -22.0 C (-7.6 F).
Coldest night (TNn) at Columbus Basin by year
YearColdest night (TNn)
1994-21.8 C (-7.2 F)
1995-21.7 C (-7.1 F)
1996-26.3 C (-15.3 F)
1997-21.6 C (-6.9 F)
1998-24.0 C (-11.2 F)
1999-21.3 C (-6.3 F)
2000-21.6 C (-6.9 F)
2001-21.3 C (-6.3 F)
2002-24.0 C (-11.2 F)
2003-22.6 C (-8.7 F)
2004-24.0 C (-11.2 F)
2005-20.8 C (-5.4 F)
2006-21.1 C (-6.0 F)
2007-24.1 C (-11.4 F)
2008-25.9 C (-14.6 F)
2009-20.4 C (-4.7 F)
2010-23.8 C (-10.8 F)
2011-28.4 C (-19.1 F)
2012-19.4 C (-2.9 F)
2013-26.7 C (-16.1 F)
2014-20.8 C (-5.4 F)
2015-21.0 C (-5.8 F)
2016-23.0 C (-9.4 F)
2017-23.9 C (-11.0 F)
2018-21.6 C (-6.9 F)
2019-22.2 C (-8.0 F)
2020-22.4 C (-8.3 F)
2021-20.4 C (-4.7 F)
2022-22.0 C (-7.6 F)
2023-22.3 C (-8.1 F)
2024-19.6 C (-3.3 F)
2025-24.2 C (-11.6 F)
2026-19.5 C (-3.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Columbus Basin by year The wettest day of the year at Columbus Basin, 1994 to 2026. The record is 88.9 mm (3.5 in) in 2021, marked on the chart; the median year is 61.0 mm (2.4 in). 20406080100200020102020Record: 88.9 mm (3.5 in) in 2021
The wettest day of the year at Columbus Basin, 1994 to 2026. The record is 88.9 mm (3.5 in) in 2021, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest day (Rx1day) at Columbus Basin by year
YearWettest day (Rx1day)
199448.3 mm (1.9 in)
199558.4 mm (2.3 in)
199666.0 mm (2.6 in)
199763.5 mm (2.5 in)
199850.8 mm (2.0 in)
199948.3 mm (1.9 in)
200076.2 mm (3.0 in)
200153.3 mm (2.1 in)
200261.0 mm (2.4 in)
200368.6 mm (2.7 in)
200476.2 mm (3.0 in)
200576.2 mm (3.0 in)
200683.8 mm (3.3 in)
200758.4 mm (2.3 in)
200873.7 mm (2.9 in)
200943.2 mm (1.7 in)
201066.0 mm (2.6 in)
201145.7 mm (1.8 in)
201238.1 mm (1.5 in)
201368.6 mm (2.7 in)
201466.0 mm (2.6 in)
201555.9 mm (2.2 in)
201655.9 mm (2.2 in)
201768.6 mm (2.7 in)
201848.3 mm (1.9 in)
201955.9 mm (2.2 in)
202071.1 mm (2.8 in)
202188.9 mm (3.5 in)
202235.6 mm (1.4 in)
202345.7 mm (1.8 in)
202461.0 mm (2.4 in)
202553.3 mm (2.1 in)
202676.2 mm (3.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Columbus Basin by year The wettest five days of the year at Columbus Basin, 1994 to 2026. The record is 256.6 mm (10.1 in) in 2005, marked on the chart; the median year is 116.9 mm (4.6 in). 50100150200250300200020102020Record: 256.6 mm (10.1 in) in 2005
The wettest five days of the year at Columbus Basin, 1994 to 2026. The record is 256.6 mm (10.1 in) in 2005, marked on the chart; the median year is 116.9 mm (4.6 in).
Wettest five days (Rx5day) at Columbus Basin by year
YearWettest five days (Rx5day)
1994119.4 mm (4.7 in)
1995139.6 mm (5.5 in)
1996159.9 mm (6.3 in)
1997109.3 mm (4.3 in)
1998104.0 mm (4.1 in)
1999132.1 mm (5.2 in)
2000114.4 mm (4.5 in)
200191.5 mm (3.6 in)
200291.4 mm (3.6 in)
2003101.6 mm (4.0 in)
2004147.3 mm (5.8 in)
2005256.6 mm (10.1 in)
2006154.9 mm (6.1 in)
2007124.4 mm (4.9 in)
2008111.8 mm (4.4 in)
200981.2 mm (3.2 in)
2010180.3 mm (7.1 in)
2011121.9 mm (4.8 in)
201263.5 mm (2.5 in)
2013147.4 mm (5.8 in)
201481.2 mm (3.2 in)
201588.9 mm (3.5 in)
201691.3 mm (3.6 in)
2017142.3 mm (5.6 in)
201894.0 mm (3.7 in)
2019116.8 mm (4.6 in)
202091.4 mm (3.6 in)
2021116.9 mm (4.6 in)
2022111.8 mm (4.4 in)
2023124.4 mm (4.9 in)
2024127.1 mm (5.0 in)
2025182.8 mm (7.2 in)
2026119.3 mm (4.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Columbus Basin by year The longest dry spell of the year at Columbus Basin, 1994 to 2026. The record is 60 days in 1999, marked on the chart; the median year is 29 days. 0204060200020102020Record: 60 days in 1999
The longest dry spell of the year at Columbus Basin, 1994 to 2026. The record is 60 days in 1999, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Columbus Basin by year
YearLongest dry spell (CDD)
19948 days
199523 days
199613 days
199725 days
199818 days
199960 days
200027 days
200124 days
200229 days
200326 days
200439 days
200529 days
200647 days
200731 days
200819 days
200917 days
201030 days
201146 days
201245 days
201339 days
201444 days
201541 days
201627 days
201751 days
201824 days
201941 days
202039 days
202119 days
202253 days
202335 days
202429 days
202525 days
202629 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 Columbus Basin falls on 9 June and the median first autumn frost on 20 September, which leaves a median of 105 days between them.

Fitted over all years, the growing season changes by +8.1 days per decade at this station.

Frost dates and growing season at Columbus Basin
MeasureMedian, all yearsEarliest periodRecent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost9 Junen/a9 Junen/a-4.5 days per decade
First autumn frost20 Septembern/a20 Septembern/a+3.6 days per decade
Growing days105 daysn/a105 daysn/a+8.1 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

31 years, 1995 to 2025

A day with at least 60.5 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 91.0 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Columbus Basin: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years60.5 mm (2.4 in)
5 years72.2 mm (2.8 in)
10 years78.2 mm (3.1 in)
25 years84.3 mm (3.3 in)
50 years88.0 mm (3.5 in)Longer than the 31 years of record
100 years91.0 mm (3.6 in)Longer than the 31 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, 31 years of values from 1995 to 2025.

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: 88.9 mm (3.5 in) in 2021; 83.8 mm (3.3 in) in 2006; 76.2 mm (3.0 in) in 2000.

Download the Data

  • Data for Columbus Basin standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Columbus Basin 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).