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Built 2026-10-15 (15 October 2026)

Antero Rsvr Weather Records (USC00050263)

Record envelope, standing records and threshold days for Antero Rsvr (USC00050263), Colorado, United States, with 66 years of record.

Key Facts for Antero Rsvr

  • Antero Rsvr (USC00050263) is a weather station in Colorado, United States at 38.99 latitude and -105.89 longitude, 2,725 m (8,939 ft) above sea level.
  • The station reports from 1961 to 2026, 66 years of record.
  • 1,464 records set at Antero Rsvr still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Antero Rsvr set a daily record high minimum temperature of 3.9 C (39.0 F) on 11 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, 38.99 latitude, -105.89 longitude.
  • Elevation: 2,725 m (8,939 ft).
  • Period of record: 1961 to 2026, 66 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

27 days at or beyond a record
Daily record high and record low at Antero Rsvr, with 2026 drawn through them The band shows the record high and record low for each calendar day at Antero Rsvr. The lines show the 2026 daily maximum and minimum. 27 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Antero Rsvr. The lines show the 2026 daily maximum and minimum. 27 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Antero Rsvr, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-47.8 C (-54.0 F)12.2 C (54.0 F)-26.7 C (-16.1 F)
Feb14.4 C (57.9 F)-46.1 C (-51.0 F)12.8 C (55.0 F)-22.2 C (-8.0 F)
Mar21.7 C (71.1 F)-41.7 C (-43.1 F)21.7 C (71.1 F)-21.1 C (-6.0 F)
Apr22.2 C (72.0 F)-33.9 C (-29.0 F)18.9 C (66.0 F)-13.3 C (8.1 F)
May27.2 C (81.0 F)-17.8 C (0.0 F)23.3 C (73.9 F)-6.1 C (21.0 F)
Jun31.1 C (88.0 F)-9.4 C (15.1 F)28.3 C (82.9 F)-2.8 C (27.0 F)
Jul31.1 C (88.0 F)-5.0 C (23.0 F)30.6 C (87.1 F)-0.6 C (30.9 F)
Aug30.6 C (87.1 F)-7.2 C (19.0 F)30.0 C (86.0 F)1.7 C (35.1 F)
Sep28.9 C (84.0 F)-16.1 C (3.0 F)26.1 C (79.0 F)-2.8 C (27.0 F)
Oct25.6 C (78.1 F)-30.0 C (-22.0 F)22.2 C (72.0 F)-2.8 C (27.0 F)
Nov20.0 C (68.0 F)-36.1 C (-33.0 F)n/an/a
Dec15.6 C (60.1 F)-45.0 C (-49.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Antero Rsvr by the year they were set 1,464 records at Antero Rsvr still stand. 1971 holds the most, with 40. 0102030401961: 101962: 321963: 221964: 221965: 291966: 161967: 211968: 51969: 351970: 261971: 401972: 331973: 201974: 161975: 201976: 111977: 181978: 221979: 281980: 281981: 331982: 201983: 151984: 141985: 251986: 281987: 241988: 141989: 381990: 291991: 141992: 171993: 191994: 161995: 261996: 281997: 251998: 161999: 182000: 182001: 102002: 242003: 372004: 232005: 142006: 222007: 172008: 132009: 212010: 232011: 242012: 182013: 342014: 202015: 202016: 242017: 332018: 142019: 262020: 272021: 252022: 232023: 172024: 162025: 192026: 291961196819751982198919962003201020172024
1,464 records at Antero Rsvr still stand. 1971 holds the most, with 40.
Standing records at Antero Rsvr by the year they were set
Year setStanding records
196110
196232
196322
196422
196529
196616
196721
19685
196935
197026
197140
197233
197320
197416
197520
197611
197718
197822
197928
198028
198133
198220
198315
198414
198525
198628
198724
198814
198938
199029
199114
199217
199319
199416
199526
199628
199725
199816
199918
200018
200110
200224
200337
200423
200514
200622
200717
200813
200921
201023
201124
201218
201334
201420
201520
201624
201733
201814
201926
202027
202125
202223
202317
202416
202519
202629

Wettest Day of Each Month

Jul: 55.4 mm (2.2 in)
Record daily precipitation for each month at Antero Rsvr The wettest day on record for each calendar month at Antero Rsvr. The most was 55.4 mm (2.2 in) on 29 July 1984. 0204060 Jan: 20.3 mm (0.8 in), 2 January 2022 Jan Feb: 20.3 mm (0.8 in), 1 February 2004 Feb Mar: 27.4 mm (1.1 in), 15 March 2024 Mar Apr: 23.9 mm (0.9 in), 16 April 2016 Apr May: 48.0 mm (1.9 in), 19 May 2015 May Jun: 39.4 mm (1.6 in), 16 June 1963 Jun Jul: 55.4 mm (2.2 in), 29 July 1984 Jul Aug: 44.7 mm (1.8 in), 25 August 1992 Aug Sep: 34.3 mm (1.4 in), 3 September 1961 Sep Oct: 32.8 mm (1.3 in), 10 October 2005 Oct Nov: 27.2 mm (1.1 in), 1 November 1986 Nov Dec: 12.4 mm (0.5 in), 29 December 2006 Dec
The wettest day on record for each calendar month at Antero Rsvr. The most was 55.4 mm (2.2 in) on 29 July 1984.
Record daily precipitation for each month at Antero Rsvr
MonthRecord daily precipitation (mm)Date
Jan20.3 mm (0.8 in)2 January 2022
Feb20.3 mm (0.8 in)1 February 2004
Mar27.4 mm (1.1 in)15 March 2024
Apr23.9 mm (0.9 in)16 April 2016
May48.0 mm (1.9 in)19 May 2015
Jun39.4 mm (1.6 in)16 June 1963
Jul55.4 mm (2.2 in)29 July 1984
Aug44.7 mm (1.8 in)25 August 1992
Sep34.3 mm (1.4 in)3 September 1961
Oct32.8 mm (1.3 in)10 October 2005
Nov27.2 mm (1.1 in)1 November 1986
Dec12.4 mm (0.5 in)29 December 2006

Period of Record Coverage

1961 to 2026
Days with data per year at Antero Rsvr 66 years of record at Antero Rsvr, 1961 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1961, 1968, 2025, 2026. 1961: 197 of 365 days1962: 357 of 365 days1963: 365 of 365 days1964: 363 of 366 days1965: 365 of 365 days1966: 363 of 365 days1967: 364 of 365 days1968: 305 of 366 days1969: 364 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 364 of 366 days1973: 362 of 365 days1974: 335 of 365 days1975: 364 of 365 days1976: 361 of 366 days1977: 361 of 365 days1978: 335 of 365 days1979: 365 of 365 days1980: 356 of 366 days1981: 363 of 365 days1982: 365 of 365 days1983: 364 of 365 days1984: 364 of 366 days1985: 364 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 335 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 363 of 366 days1993: 362 of 365 days1994: 365 of 365 days1995: 361 of 365 days1996: 363 of 366 days1997: 364 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 365 of 366 days2001: 364 of 365 days2002: 365 of 365 days2003: 356 of 365 days2004: 366 of 366 days2005: 364 of 365 days2006: 364 of 365 days2007: 363 of 365 days2008: 365 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 364 of 366 days2013: 365 of 365 days2014: 333 of 365 days2015: 339 of 365 days2016: 364 of 366 days2017: 358 of 365 days2018: 361 of 365 days2019: 363 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 363 of 365 days2023: 365 of 365 days2024: 358 of 366 days2025: 319 of 365 days2026: 282 of 365 days197019801990200020102020
66 years of record at Antero Rsvr, 1961 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1961, 1968, 2025, 2026.
Days with data per year at Antero Rsvr
YearDays with dataShare of yearComplete
196119754%No
196235798%Yes
1963365100%Yes
196436399%Yes
1965365100%Yes
196636399%Yes
1967364100%Yes
196830583%No
1969364100%Yes
1970364100%Yes
1971365100%Yes
197236499%Yes
197336299%Yes
197433592%Yes
1975364100%Yes
197636199%Yes
197736199%Yes
197833592%Yes
1979365100%Yes
198035697%Yes
198136399%Yes
1982365100%Yes
1983364100%Yes
198436499%Yes
1985364100%Yes
1986365100%Yes
1987365100%Yes
198833592%Yes
1989365100%Yes
1990364100%Yes
1991365100%Yes
199236399%Yes
199336299%Yes
1994365100%Yes
199536199%Yes
199636399%Yes
1997364100%Yes
199836399%Yes
1999365100%Yes
2000365100%Yes
2001364100%Yes
2002365100%Yes
200335698%Yes
2004366100%Yes
2005364100%Yes
2006364100%Yes
200736399%Yes
2008365100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
201236499%Yes
2013365100%Yes
201433391%Yes
201533993%Yes
201636499%Yes
201735898%Yes
201836199%Yes
201936399%Yes
2020366100%Yes
2021365100%Yes
202236399%Yes
2023365100%Yes
202435898%Yes
202531987%No
202628277%No

Latest Records

20
Latest records at Antero Rsvr
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Antero Rsvr, USdaily high min (Provisional)3.9 C (39.0 F)0.6 C (1.1 F)0 years7 of 100 (Routine)
1 October 2026Antero Rsvr, USdaily rain (Provisional)14.2 mm (0.6 in)5.1 mm (0.20 in)28 years20 of 100 (Routine)
1 October 2026Antero Rsvr, USdaily low max (Tie, Provisional)8.9 C (48.0 F)tie40 years4 of 100 (Routine)
29 September 2026Antero Rsvr, USdaily high min (Tie, Provisional)4.4 C (39.9 F)tie55 years5 of 100 (Routine)
26 September 2026Antero Rsvr, USdaily high min (Provisional)8.3 C (46.9 F)1.1 C (2.0 F)44 years22 of 100 (Routine)
25 September 2026Antero Rsvr, USdaily high min (Provisional)8.3 C (46.9 F)1.6 C (2.9 F)44 years23 of 100 (Routine)
24 September 2026Antero Rsvr, USdaily high min (Provisional)7.8 C (46.0 F)3.9 C (7.0 F)53 years32 of 100 (Routine)
17 September 2026Antero Rsvr, USdaily high min (Tie, Provisional)7.2 C (45.0 F)tie36 years4 of 100 (Routine)
16 September 2026Antero Rsvr, USdaily high min (Tie, Provisional)6.1 C (43.0 F)tie48 years5 of 100 (Routine)
22 August 2026Antero Rsvr, USdaily high max (Tie, Provisional)28.3 C (82.9 F)tie0 years1 of 100 (Routine)
11 August 2026Antero Rsvr, USdaily high max (Tie)29.4 C (84.9 F)tie31 years3 of 100 (Routine)
8 August 2026Antero Rsvr, USdaily high max29.4 C (84.9 F)0.5 C (0.9 F)47 years21 of 100 (Routine)
6 August 2026Antero Rsvr, USdaily high max28.9 C (84.0 F)0.6 C (1.1 F)47 years22 of 100 (Routine)
4 August 2026Antero Rsvr, USdaily high max30.0 C (86.0 F)2.2 C (4.0 F)25 years20 of 100 (Routine)
3 August 2026Antero Rsvr, USdaily high max30.0 C (86.0 F)1.1 C (2.0 F)23 years15 of 100 (Routine)
21 July 2026Antero Rsvr, USdaily high max (Tie)30.6 C (87.1 F)tie20 years3 of 100 (Routine)
20 July 2026Antero Rsvr, USdaily high max (Tie)30.0 C (86.0 F)tie20 years3 of 100 (Routine)
25 June 2026Antero Rsvr, USdaily high min8.9 C (48.0 F)1.1 C (2.0 F)40 years21 of 100 (Routine)
18 June 2026Antero Rsvr, USdaily high min8.9 C (48.0 F)0.6 C (1.1 F)4 years8 of 100 (Routine)
28 May 2026Antero Rsvr, USdaily high min (Tie)5.0 C (41.0 F)tie44 years4 of 100 (Routine)

Climate Trend

57 complete years, 1962 to 2024
Annual mean temperature at Antero Rsvr as warming stripes, 1962 to 2024 One stripe for each of 57 complete years at Antero Rsvr, 1962 to 2024. Blue stripes are years cooler than the station's own mean of 2.1 C (35.8 F); red stripes are warmer. The coolest year was 1987, at 0.3 C (32.5 F), and the warmest was 2017, at 3.8 C (38.8 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1962: 1.6 C, -0.5 C from the station mean1963: 2.6 C, +0.5 C from the station mean1964: 1.1 C, -1.0 C from the station mean1965: 1.4 C, -0.7 C from the station mean1966: 2.4 C, +0.3 C from the station mean1967: 2.9 C, +0.8 C from the station mean1969: 1.7 C, -0.4 C from the station mean1970: 1.7 C, -0.4 C from the station mean1971: 1.6 C, -0.5 C from the station mean1972: 2.0 C, -0.1 C from the station mean1973: 1.0 C, -1.1 C from the station mean1975: 1.4 C, -0.8 C from the station mean1976: 2.3 C, +0.2 C from the station mean1977: 3.2 C, +1.0 C from the station mean1979: 0.5 C, -1.6 C from the station mean1980: 1.7 C, -0.4 C from the station mean1981: 2.8 C, +0.7 C from the station mean1982: 2.0 C, -0.1 C from the station mean1983: 1.5 C, -0.7 C from the station mean1984: 0.7 C, -1.5 C from the station mean1985: 2.0 C, -0.1 C from the station mean1986: 2.0 C, -0.1 C from the station mean1987: 0.3 C, -1.8 C from the station mean1989: 2.1 C, 0.0 C from the station mean1990: 2.7 C, +0.6 C from the station mean1991: 2.1 C, 0.0 C from the station mean1992: 1.6 C, -0.5 C from the station mean1993: 1.6 C, -0.6 C from the station mean1994: 3.2 C, +1.1 C from the station mean1995: 3.2 C, +1.1 C from the station mean1996: 3.4 C, +1.3 C from the station mean1997: 1.6 C, -0.5 C from the station mean1998: 2.3 C, +0.2 C from the station mean1999: 3.2 C, +1.0 C from the station mean2000: 3.3 C, +1.2 C from the station mean2001: 3.0 C, +0.9 C from the station mean2002: 2.8 C, +0.7 C from the station mean2003: 3.2 C, +1.1 C from the station mean2004: 1.5 C, -0.6 C from the station mean2005: 3.1 C, +0.9 C from the station mean2006: 2.7 C, +0.6 C from the station mean2007: 2.1 C, -0.1 C from the station mean2008: 0.9 C, -1.2 C from the station mean2009: 2.0 C, -0.1 C from the station mean2010: 1.3 C, -0.8 C from the station mean2011: 1.7 C, -0.5 C from the station mean2012: 3.3 C, +1.1 C from the station mean2013: 1.2 C, -0.9 C from the station mean2016: 3.0 C, +0.9 C from the station mean2017: 3.8 C, +1.7 C from the station mean2018: 3.4 C, +1.3 C from the station mean2019: 0.9 C, -1.2 C from the station mean2020: 1.7 C, -0.5 C from the station mean2021: 2.7 C, +0.6 C from the station mean2022: 1.6 C, -0.5 C from the station mean2023: 2.2 C, +0.1 C from the station mean2024: 2.5 C, +0.4 C from the station mean1962197019801990200020102020
One stripe for each of 57 complete years at Antero Rsvr, 1962 to 2024. Blue stripes are years cooler than the station's own mean of 2.1 C (35.8 F); red stripes are warmer. The coolest year was 1987, at 0.3 C (32.5 F), and the warmest was 2017, at 3.8 C (38.8 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Antero Rsvr as warming stripes, 1962 to 2024
YearAnnual mean temperatureDifference from the station mean
19621.6 C-0.50 C
19632.6 C+0.46 C
19641.1 C-1.02 C
19651.4 C-0.74 C
19662.4 C+0.26 C
19672.9 C+0.75 C
19691.7 C-0.45 C
19701.7 C-0.40 C
19711.6 C-0.50 C
19722.0 C-0.09 C
19731.0 C-1.13 C
19751.4 C-0.77 C
19762.3 C+0.17 C
19773.2 C+1.04 C
19790.5 C-1.64 C
19801.7 C-0.42 C
19812.8 C+0.71 C
19822.0 C-0.09 C
19831.5 C-0.66 C
19840.7 C-1.47 C
19852.0 C-0.15 C
19862.0 C-0.11 C
19870.3 C-1.84 C
19892.1 C-0.01 C
19902.7 C+0.55 C
19912.1 C-0.01 C
19921.6 C-0.49 C
19931.6 C-0.57 C
19943.2 C+1.11 C
19953.2 C+1.06 C
19963.4 C+1.30 C
19971.6 C-0.48 C
19982.3 C+0.22 C
19993.2 C+1.03 C
20003.3 C+1.16 C
20013.0 C+0.88 C
20022.8 C+0.65 C
20033.2 C+1.08 C
20041.5 C-0.59 C
20053.1 C+0.94 C
20062.7 C+0.59 C
20072.1 C-0.06 C
20080.9 C-1.23 C
20092.0 C-0.10 C
20101.3 C-0.85 C
20111.7 C-0.47 C
20123.3 C+1.14 C
20131.2 C-0.89 C
20163.0 C+0.87 C
20173.8 C+1.67 C
20183.4 C+1.25 C
20190.9 C-1.25 C
20201.7 C-0.47 C
20212.7 C+0.55 C
20221.6 C-0.50 C
20232.2 C+0.09 C
20242.5 C+0.40 C

The fitted trend in annual mean temperature here over 1962 to 2024 is 0.11 C (-0.01 to 0.23) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.20 F (-0.02 to 0.42) per decade. The slope is a straight line fitted to 57 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Antero Rsvr
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.11 C (-0.01 to 0.23) per decade0.20 F (-0.02 to 0.42) per decade1962 to 202457Not clearly different from zero
Mean daily maximum0.15 C (0.03 to 0.28) per decade0.3 F (0.1 to 0.5) per decade1962 to 202457Rise
Mean daily minimum0.1 C (-0.1 to 0.2) per decade0.1 F (-0.1 to 0.4) per decade1962 to 202457Not clearly different from zero

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

1961 to 2026
Yearly extremes at Antero Rsvr: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)31.1 C (88.0 F)198029.2 C (84.5 F)66
Coldest night (TNn)-47.8 C (-54.0 F)1962-38.3 C (-36.9 F)66
Wettest day (Rx1day)55.4 mm (2.2 in)198424.0 mm (0.9 in)66
Wettest five days (Rx5day)77.3 mm (3.0 in)198441.8 mm (1.6 in)66
Longest dry spell (CDD)71 days202143 days66

Hottest day (TXx)

Hottest day (TXx) at Antero Rsvr by year The hottest day of the year at Antero Rsvr, 1961 to 2026. The record is 31.1 C (88.0 F) in 1980, marked on the chart; the median year is 29.2 C (84.5 F). 26283032198020002020Record: 31.1 C (88.0 F) in 1980
The hottest day of the year at Antero Rsvr, 1961 to 2026. The record is 31.1 C (88.0 F) in 1980, marked on the chart; the median year is 29.2 C (84.5 F).
Hottest day (TXx) at Antero Rsvr by year
YearHottest day (TXx)
196128.3 C (82.9 F)
196228.3 C (82.9 F)
196329.4 C (84.9 F)
196428.3 C (82.9 F)
196527.2 C (81.0 F)
196629.4 C (84.9 F)
196727.2 C (81.0 F)
196827.2 C (81.0 F)
196928.3 C (82.9 F)
197027.8 C (82.0 F)
197128.3 C (82.9 F)
197229.4 C (84.9 F)
197330.6 C (87.1 F)
197429.4 C (84.9 F)
197528.3 C (82.9 F)
197629.4 C (84.9 F)
197728.3 C (82.9 F)
197828.3 C (82.9 F)
197929.4 C (84.9 F)
198031.1 C (88.0 F)
198128.9 C (84.0 F)
198229.4 C (84.9 F)
198328.9 C (84.0 F)
198427.8 C (82.0 F)
198528.9 C (84.0 F)
198627.8 C (82.0 F)
198728.9 C (84.0 F)
198827.8 C (82.0 F)
198931.1 C (88.0 F)
199030.6 C (87.1 F)
199128.3 C (82.9 F)
199227.2 C (81.0 F)
199327.8 C (82.0 F)
199429.4 C (84.9 F)
199530.0 C (86.0 F)
199630.0 C (86.0 F)
199728.3 C (82.9 F)
199829.4 C (84.9 F)
199928.3 C (82.9 F)
200029.4 C (84.9 F)
200130.0 C (86.0 F)
200231.1 C (88.0 F)
200331.1 C (88.0 F)
200428.9 C (84.0 F)
200531.1 C (88.0 F)
200630.0 C (86.0 F)
200728.9 C (84.0 F)
200828.9 C (84.0 F)
200928.3 C (82.9 F)
201029.4 C (84.9 F)
201128.9 C (84.0 F)
201229.4 C (84.9 F)
201330.0 C (86.0 F)
201428.3 C (82.9 F)
201526.7 C (80.1 F)
201629.4 C (84.9 F)
201729.4 C (84.9 F)
201829.4 C (84.9 F)
201929.4 C (84.9 F)
202029.4 C (84.9 F)
202131.1 C (88.0 F)
202228.3 C (82.9 F)
202330.0 C (86.0 F)
202430.6 C (87.1 F)
202528.3 C (82.9 F)
202630.6 C (87.1 F)

Coldest night (TNn)

Coldest night (TNn) at Antero Rsvr by year The coldest night of the year at Antero Rsvr, 1961 to 2026. The record is -47.8 C (-54.0 F) in 1962, marked on the chart; the median year is -38.3 C (-36.9 F). -50-40-30-20198020002020Record: -47.8 C (-54.0 F) in 1962
The coldest night of the year at Antero Rsvr, 1961 to 2026. The record is -47.8 C (-54.0 F) in 1962, marked on the chart; the median year is -38.3 C (-36.9 F).
Coldest night (TNn) at Antero Rsvr by year
YearColdest night (TNn)
1961-35.0 C (-31.0 F)
1962-47.8 C (-54.0 F)
1963-44.4 C (-47.9 F)
1964-38.3 C (-36.9 F)
1965-41.7 C (-43.1 F)
1966-35.6 C (-32.1 F)
1967-32.2 C (-26.0 F)
1968-32.8 C (-27.0 F)
1969-39.4 C (-38.9 F)
1970-38.9 C (-38.0 F)
1971-43.9 C (-47.0 F)
1972-40.0 C (-40.0 F)
1973-37.2 C (-35.0 F)
1974-41.1 C (-42.0 F)
1975-37.2 C (-35.0 F)
1976-40.6 C (-41.1 F)
1977-34.4 C (-29.9 F)
1978-45.0 C (-49.0 F)
1979-37.8 C (-36.0 F)
1980-37.2 C (-35.0 F)
1981-40.0 C (-40.0 F)
1982-40.6 C (-41.1 F)
1983-38.9 C (-38.0 F)
1984-38.3 C (-36.9 F)
1985-38.9 C (-38.0 F)
1986-42.2 C (-44.0 F)
1987-41.1 C (-42.0 F)
1988-40.0 C (-40.0 F)
1989-46.1 C (-51.0 F)
1990-33.3 C (-27.9 F)
1991-32.8 C (-27.0 F)
1992-33.3 C (-27.9 F)
1993-31.7 C (-25.1 F)
1994-39.4 C (-38.9 F)
1995-31.1 C (-24.0 F)
1996-30.6 C (-23.1 F)
1997-36.7 C (-34.1 F)
1998-37.2 C (-35.0 F)
1999-30.6 C (-23.1 F)
2000-38.9 C (-38.0 F)
2001-36.1 C (-33.0 F)
2002-38.9 C (-38.0 F)
2003-38.3 C (-36.9 F)
2004-43.3 C (-45.9 F)
2005-37.8 C (-36.0 F)
2006-38.9 C (-38.0 F)
2007-38.9 C (-38.0 F)
2008-36.1 C (-33.0 F)
2009-32.8 C (-27.0 F)
2010-37.2 C (-35.0 F)
2011-42.8 C (-45.0 F)
2012-33.9 C (-29.0 F)
2013-37.8 C (-36.0 F)
2014-37.8 C (-36.0 F)
2015-40.0 C (-40.0 F)
2016-42.8 C (-45.0 F)
2017-40.0 C (-40.0 F)
2018-31.1 C (-24.0 F)
2019-44.4 C (-47.9 F)
2020-43.9 C (-47.0 F)
2021-38.9 C (-38.0 F)
2022-44.4 C (-47.9 F)
2023-34.4 C (-29.9 F)
2024-33.9 C (-29.0 F)
2025-37.8 C (-36.0 F)
2026-26.7 C (-16.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Antero Rsvr by year The wettest day of the year at Antero Rsvr, 1961 to 2026. The record is 55.4 mm (2.2 in) in 1984, marked on the chart; the median year is 24.0 mm (0.9 in). 0204060198020002020Record: 55.4 mm (2.2 in) in 1984
The wettest day of the year at Antero Rsvr, 1961 to 2026. The record is 55.4 mm (2.2 in) in 1984, marked on the chart; the median year is 24.0 mm (0.9 in).
Wettest day (Rx1day) at Antero Rsvr by year
YearWettest day (Rx1day)
196134.3 mm (1.4 in)
196212.2 mm (0.5 in)
196339.4 mm (1.6 in)
196413.2 mm (0.5 in)
196538.1 mm (1.5 in)
196615.0 mm (0.6 in)
196721.8 mm (0.9 in)
196814.5 mm (0.6 in)
196925.4 mm (1.0 in)
197038.1 mm (1.5 in)
197120.6 mm (0.8 in)
197216.0 mm (0.6 in)
197317.0 mm (0.7 in)
197430.7 mm (1.2 in)
197522.9 mm (0.9 in)
197616.0 mm (0.6 in)
197735.1 mm (1.4 in)
19789.9 mm (0.39 in)
197923.4 mm (0.9 in)
198024.1 mm (0.9 in)
198137.8 mm (1.5 in)
198232.8 mm (1.3 in)
198343.9 mm (1.7 in)
198455.4 mm (2.2 in)
198530.0 mm (1.2 in)
198627.2 mm (1.1 in)
198714.5 mm (0.6 in)
198822.9 mm (0.9 in)
198925.1 mm (1.0 in)
199043.2 mm (1.7 in)
199114.7 mm (0.6 in)
199244.7 mm (1.8 in)
199311.2 mm (0.4 in)
199430.5 mm (1.2 in)
199526.7 mm (1.1 in)
199637.1 mm (1.5 in)
199722.9 mm (0.9 in)
199849.5 mm (1.9 in)
199916.0 mm (0.6 in)
200023.6 mm (0.9 in)
200139.4 mm (1.6 in)
200233.0 mm (1.3 in)
200315.2 mm (0.6 in)
200425.4 mm (1.0 in)
200532.8 mm (1.3 in)
200624.9 mm (1.0 in)
200723.4 mm (0.9 in)
200819.8 mm (0.8 in)
200916.8 mm (0.7 in)
201016.3 mm (0.6 in)
201115.7 mm (0.6 in)
201236.1 mm (1.4 in)
201331.0 mm (1.2 in)
201425.4 mm (1.0 in)
201548.0 mm (1.9 in)
201623.9 mm (0.9 in)
201721.6 mm (0.9 in)
201820.3 mm (0.8 in)
201913.2 mm (0.5 in)
202017.8 mm (0.7 in)
202133.0 mm (1.3 in)
202225.4 mm (1.0 in)
202318.0 mm (0.7 in)
202427.4 mm (1.1 in)
202523.4 mm (0.9 in)
202614.2 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Antero Rsvr by year The wettest five days of the year at Antero Rsvr, 1961 to 2026. The record is 77.3 mm (3.0 in) in 1984, marked on the chart; the median year is 41.8 mm (1.6 in). 020406080198020002020Record: 77.3 mm (3.0 in) in 1984
The wettest five days of the year at Antero Rsvr, 1961 to 2026. The record is 77.3 mm (3.0 in) in 1984, marked on the chart; the median year is 41.8 mm (1.6 in).
Wettest five days (Rx5day) at Antero Rsvr by year
YearWettest five days (Rx5day)
196143.3 mm (1.7 in)
196220.9 mm (0.8 in)
196351.6 mm (2.0 in)
196442.4 mm (1.7 in)
196553.8 mm (2.1 in)
196641.8 mm (1.6 in)
196733.8 mm (1.3 in)
196832.7 mm (1.3 in)
196952.1 mm (2.1 in)
197061.2 mm (2.4 in)
197146.0 mm (1.8 in)
197219.8 mm (0.8 in)
197333.3 mm (1.3 in)
197438.3 mm (1.5 in)
197529.3 mm (1.2 in)
197644.2 mm (1.7 in)
197769.6 mm (2.7 in)
197817.5 mm (0.7 in)
197945.7 mm (1.8 in)
198031.7 mm (1.2 in)
198176.7 mm (3.0 in)
198257.8 mm (2.3 in)
198353.9 mm (2.1 in)
198477.3 mm (3.0 in)
198552.0 mm (2.0 in)
198631.0 mm (1.2 in)
198718.3 mm (0.7 in)
198834.1 mm (1.3 in)
198940.6 mm (1.6 in)
199048.6 mm (1.9 in)
199132.5 mm (1.3 in)
199254.6 mm (2.1 in)
199317.3 mm (0.7 in)
199449.7 mm (2.0 in)
199534.4 mm (1.4 in)
199644.5 mm (1.8 in)
199753.1 mm (2.1 in)
199858.8 mm (2.3 in)
199927.5 mm (1.1 in)
200034.5 mm (1.4 in)
200146.8 mm (1.8 in)
200234.9 mm (1.4 in)
200339.5 mm (1.6 in)
200470.6 mm (2.8 in)
200541.7 mm (1.6 in)
200652.0 mm (2.0 in)
200744.2 mm (1.7 in)
200842.5 mm (1.7 in)
200937.3 mm (1.5 in)
201030.5 mm (1.2 in)
201128.7 mm (1.1 in)
201250.1 mm (2.0 in)
201347.5 mm (1.9 in)
201449.0 mm (1.9 in)
201558.7 mm (2.3 in)
201641.9 mm (1.6 in)
201736.9 mm (1.5 in)
201838.1 mm (1.5 in)
201918.7 mm (0.7 in)
202031.0 mm (1.2 in)
202151.8 mm (2.0 in)
202239.4 mm (1.6 in)
202336.0 mm (1.4 in)
202445.7 mm (1.8 in)
202527.0 mm (1.1 in)
202624.2 mm (1.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Antero Rsvr by year The longest dry spell of the year at Antero Rsvr, 1961 to 2026. The record is 71 days in 2021, marked on the chart; the median year is 43 days. 020406080198020002020Record: 71 days in 2021
The longest dry spell of the year at Antero Rsvr, 1961 to 2026. The record is 71 days in 2021, marked on the chart; the median year is 43 days.
Longest dry spell (CDD) at Antero Rsvr by year
YearLongest dry spell (CDD)
196119 days
196248 days
196346 days
196436 days
196537 days
196638 days
196749 days
196842 days
196934 days
197036 days
197131 days
197232 days
197359 days
197437 days
197544 days
197629 days
197732 days
197845 days
197931 days
198043 days
198153 days
198242 days
198349 days
198450 days
198536 days
198650 days
198745 days
198856 days
198934 days
199044 days
199155 days
199251 days
199338 days
199431 days
199560 days
199650 days
199731 days
199857 days
199948 days
200041 days
200137 days
200251 days
200339 days
200442 days
200526 days
200652 days
200736 days
200836 days
200942 days
201051 days
201162 days
201256 days
201358 days
201432 days
201528 days
201661 days
201739 days
201843 days
201944 days
202052 days
202171 days
202232 days
202330 days
202433 days
202549 days
202650 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

57 years with a frost

Across 57 years with a frost, the median last spring frost at Antero Rsvr falls on 25 June and the median first autumn frost on 29 July, which leaves a median of 37 days between them.

Fitted over all years, the growing season changes by +4.4 days per decade at this station.

Frost dates and growing season at Antero Rsvr
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2024)Recent against earliestFitted trend
Last spring frost25 Junen/a25 Junen/a-0.7 days per decade
First autumn frost29 Julyn/a19 Augustn/a+3.6 days per decade
Growing days37 daysn/a60 daysn/a+4.4 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

62 years, 1962 to 2024

A day with at least 24.7 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 59.4 mm (2.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Antero Rsvr: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years24.7 mm (1.0 in)
5 years34.4 mm (1.4 in)
10 years40.6 mm (1.6 in)
25 years48.3 mm (1.9 in)
50 years53.9 mm (2.1 in)
100 years59.4 mm (2.3 in)Longer than the 62 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, 62 years of values from 1962 to 2024.

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: 55.4 mm (2.2 in) in 1984; 49.5 mm (1.9 in) in 1998; 48.0 mm (1.9 in) in 2015.

Station Changes

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

Climate Twins

2008 to 2024 against 1961 to 1990

Over 2008 to 2024, Antero Rsvr had a mean temperature of 2.1 C (35.9 F) and 252.4 mm (9.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Pinedale (United States, 545 km away), Grand Lake 6 SSW (United States, 132 km away) and Scofield Dam (United States, 458 km away).

Climate twins of Antero Rsvr: stations whose 1961 to 1990 climate is closest to its 2008 to 2024 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
PinedaleUnited States545 km (339 mi)2.1 C (35.8 F)293.7 mm (11.6 in)0.57
Grand Lake 6 SSWUnited States132 km (82 mi)2.2 C (36.0 F)348.7 mm (13.7 in)0.89
Scofield DamUnited States458 km (285 mi)2.8 C (37.0 F)358.6 mm (14.1 in)0.92

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Antero Rsvr standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Antero Rsvr 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).