Built 2026-10-15 (15 October 2026)

Blue Mesa Lake Weather Records (USC00050797)

Record envelope, standing records and threshold days for Blue Mesa Lake (USC00050797), Colorado, United States, with 60 years of record.

Key Facts for Blue Mesa Lake

  • Blue Mesa Lake (USC00050797) is a weather station in Colorado, United States at 38.47 latitude and -107.17 longitude, 2,307 m (7,568 ft) above sea level.
  • The station reports from 1967 to 2026, 60 years of record.
  • 1,464 records set at Blue Mesa Lake still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Blue Mesa Lake tied a daily record high maximum temperature of 24.4 C (75.9 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, 38.47 latitude, -107.17 longitude.
  • Elevation: 2,307 m (7,568 ft).
  • Period of record: 1967 to 2026, 60 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

60 days at or beyond a record
Daily record high and record low at Blue Mesa Lake, with 2026 drawn through them The band shows the record high and record low for each calendar day at Blue Mesa Lake. The lines show the 2026 daily maximum and minimum. 60 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 Blue Mesa Lake. The lines show the 2026 daily maximum and minimum. 60 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Blue Mesa Lake, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan13.3 C (55.9 F)-37.8 C (-36.0 F)8.3 C (46.9 F)-27.2 C (-17.0 F)
Feb12.8 C (55.0 F)-36.7 C (-34.1 F)12.8 C (55.0 F)-16.7 C (1.9 F)
Mar26.1 C (79.0 F)-27.8 C (-18.0 F)26.1 C (79.0 F)-9.4 C (15.1 F)
Apr26.1 C (79.0 F)-16.1 C (3.0 F)22.8 C (73.0 F)-11.1 C (12.0 F)
May30.6 C (87.1 F)-14.4 C (6.1 F)27.8 C (82.0 F)-6.7 C (19.9 F)
Jun34.4 C (93.9 F)-5.6 C (21.9 F)31.1 C (88.0 F)0.0 C (32.0 F)
Jul35.6 C (96.1 F)-1.1 C (30.0 F)35.6 C (96.1 F)1.7 C (35.1 F)
Aug34.4 C (93.9 F)-3.3 C (26.1 F)34.4 C (93.9 F)4.4 C (39.9 F)
Sep31.7 C (89.1 F)-6.7 C (19.9 F)28.9 C (84.0 F)0.6 C (33.1 F)
Oct27.2 C (81.0 F)-16.1 C (3.0 F)24.4 C (75.9 F)0.6 C (33.1 F)
Nov19.4 C (66.9 F)-25.6 C (-14.1 F)n/an/a
Dec12.8 C (55.0 F)-31.7 C (-25.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Blue Mesa Lake by the year they were set 1,464 records at Blue Mesa Lake still stand. 1990 holds the most, with 63. 0204060801970: 341971: 601972: 401977: 11978: 41979: 41980: 11989: 341990: 631991: 371992: 401993: 421994: 121995: 531996: 391997: 391998: 261999: 352000: 342001: 192002: 252003: 282004: 242005: 392006: 352007: 322008: 452009: 232010: 442011: 252012: 282013: 502014: 212015: 262016: 362017: 262018: 282019: 482020: 392021: 392022: 302023: 412024: 212025: 342026: 60197019791992199720022007201220172022
1,464 records at Blue Mesa Lake still stand. 1990 holds the most, with 63.
Standing records at Blue Mesa Lake by the year they were set
Year setStanding records
197034
197160
197240
19771
19784
19794
19801
198934
199063
199137
199240
199342
199412
199553
199639
199739
199826
199935
200034
200119
200225
200328
200424
200539
200635
200732
200845
200923
201044
201125
201228
201350
201421
201526
201636
201726
201828
201948
202039
202139
202230
202341
202421
202534
202660

All-Time Record Progression

2 new records
When Blue Mesa Lake set new all-time records 2 all-time records were set at Blue Mesa Lake between 13 October 2004 and 29 October 2004. Each dot is a new record. Record daily precipitation13 October 2004: Record daily precipitation 47.8 mm (1.9 in)29 October 2004: Record daily precipitation 50.8 mm (2.0 in)2005
2 all-time records were set at Blue Mesa Lake between 13 October 2004 and 29 October 2004. Each dot is a new record.
When Blue Mesa Lake set new all-time records
DateKindDetail
2004-10-13Record daily precipitationRecord daily precipitation 47.8 mm (1.9 in)
2004-10-29Record daily precipitationRecord daily precipitation 50.8 mm (2.0 in)

Wettest Day of Each Month

Oct: 50.8 mm (2.0 in)
Record daily precipitation for each month at Blue Mesa Lake The wettest day on record for each calendar month at Blue Mesa Lake. The most was 50.8 mm (2.0 in) on 29 October 2004. 0204060 Jan: 26.2 mm (1.0 in), 25 January 1969 Jan Feb: 16.0 mm (0.6 in), 20 February 1993 Feb Mar: 28.2 mm (1.1 in), 4 March 1992 Mar Apr: 17.0 mm (0.7 in), 19 April 1990 Apr May: 16.5 mm (0.6 in), 26 May 1973 May Jun: 24.4 mm (1.0 in), 9 June 1997 Jun Jul: 38.1 mm (1.5 in), 22 July 1977 Jul Aug: 35.6 mm (1.4 in), 7 August 1987 Aug Sep: 30.5 mm (1.2 in), 10 September 2003 Sep Oct: 50.8 mm (2.0 in), 29 October 2004 Oct Nov: 27.7 mm (1.1 in), 14 November 2025 Nov Dec: 43.2 mm (1.7 in), 7 December 2007 Dec
The wettest day on record for each calendar month at Blue Mesa Lake. The most was 50.8 mm (2.0 in) on 29 October 2004.
Record daily precipitation for each month at Blue Mesa Lake
MonthRecord daily precipitation (mm)Date
Jan26.2 mm (1.0 in)25 January 1969
Feb16.0 mm (0.6 in)20 February 1993
Mar28.2 mm (1.1 in)4 March 1992
Apr17.0 mm (0.7 in)19 April 1990
May16.5 mm (0.6 in)26 May 1973
Jun24.4 mm (1.0 in)9 June 1997
Jul38.1 mm (1.5 in)22 July 1977
Aug35.6 mm (1.4 in)7 August 1987
Sep30.5 mm (1.2 in)10 September 2003
Oct50.8 mm (2.0 in)29 October 2004
Nov27.7 mm (1.1 in)14 November 2025
Dec43.2 mm (1.7 in)7 December 2007

Period of Record Coverage

1970 to 2026
Days with data per year at Blue Mesa Lake 45 years of record at Blue Mesa Lake, 1970 to 2026. 14 years have data for under 90 percent of days and are left out of rankings: 1970, 1972, 1977, 1978, 1979, 1980, 2002, 2003 and others. 1970: 295 of 365 days1971: 356 of 365 days1972: 300 of 366 days1977: 31 of 365 days1978: 29 of 365 days1979: 30 of 365 days1980: 29 of 366 days1989: 334 of 365 days1990: 365 of 365 days1991: 358 of 365 days1992: 349 of 366 days1993: 360 of 365 days1994: 349 of 365 days1995: 362 of 365 days1996: 360 of 366 days1997: 350 of 365 days1998: 364 of 365 days1999: 360 of 365 days2000: 364 of 366 days2001: 359 of 365 days2002: 282 of 365 days2003: 312 of 365 days2004: 341 of 366 days2005: 328 of 365 days2006: 360 of 365 days2007: 362 of 365 days2008: 358 of 366 days2009: 359 of 365 days2010: 345 of 365 days2011: 341 of 365 days2012: 316 of 366 days2013: 360 of 365 days2014: 364 of 365 days2015: 356 of 365 days2016: 296 of 366 days2017: 322 of 365 days2018: 362 of 365 days2019: 364 of 365 days2020: 366 of 366 days2021: 362 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 328 of 366 days2025: 349 of 365 days2026: 272 of 365 days197019801990200020102020
45 years of record at Blue Mesa Lake, 1970 to 2026. 14 years have data for under 90 percent of days and are left out of rankings: 1970, 1972, 1977, 1978, 1979, 1980, 2002, 2003 and others.
Days with data per year at Blue Mesa Lake
YearDays with dataShare of yearComplete
197029581%No
197135698%Yes
197230082%No
1977318%No
1978298%No
1979308%No
1980298%No
198933492%Yes
1990365100%Yes
199135898%Yes
199234995%Yes
199336099%Yes
199434996%Yes
199536299%Yes
199636098%Yes
199735096%Yes
1998364100%Yes
199936099%Yes
200036499%Yes
200135998%Yes
200228277%No
200331285%No
200434193%Yes
200532890%No
200636099%Yes
200736299%Yes
200835898%Yes
200935998%Yes
201034595%Yes
201134193%Yes
201231686%No
201336099%Yes
2014364100%Yes
201535698%Yes
201629681%No
201732288%No
201836299%Yes
2019364100%Yes
2020366100%Yes
202136299%Yes
2022365100%Yes
2023365100%Yes
202432890%No
202534996%Yes
202627275%No

Latest Records

20
Latest records at Blue Mesa Lake
DateStationRecordValueBeat old record byOld record stoodSignificance
6 October 2026Blue Mesa Lake, USdaily high max (Tie, Provisional)24.4 C (75.9 F)tie28 years3 of 100 (Routine)
1 October 2026Blue Mesa Lake, USdaily low max (Provisional)11.1 C (52.0 F)0.6 C (1.1 F)12 years9 of 100 (Routine)
30 September 2026Blue Mesa Lake, USdaily high min (Provisional)6.7 C (44.1 F)1.1 C (2.0 F)11 years11 of 100 (Routine)
29 September 2026Blue Mesa Lake, USdaily high min (Provisional)6.7 C (44.1 F)0.6 C (1.1 F)4 years7 of 100 (Routine)
29 September 2026Blue Mesa Lake, USdaily low max (Tie, Provisional)11.1 C (52.0 F)tie27 years3 of 100 (Routine)
25 September 2026Blue Mesa Lake, USdaily high min (Provisional)9.4 C (48.9 F)3.3 C (5.9 F)13 years19 of 100 (Routine)
24 September 2026Blue Mesa Lake, USdaily high min (Provisional)9.4 C (48.9 F)1.1 C (2.0 F)36 years18 of 100 (Routine)
18 September 2026Blue Mesa Lake, USdaily high min (Provisional)11.7 C (53.1 F)3.4 C (6.1 F)28 years23 of 100 (Routine)
17 September 2026Blue Mesa Lake, USdaily high min (Provisional)11.1 C (52.0 F)1.7 C (3.1 F)36 years20 of 100 (Routine)
29 August 2026Blue Mesa Lake, USdaily high min (Provisional)12.8 C (55.0 F)1.1 C (2.0 F)55 years25 of 100 (Routine)
28 August 2026Blue Mesa Lake, USdaily high max (Tie, Provisional)30.6 C (87.1 F)tie5 years1 of 100 (Routine)
27 August 2026Blue Mesa Lake, USdaily high max (Provisional)31.7 C (89.1 F)1.1 C (2.0 F)24 years15 of 100 (Routine)
21 August 2026Blue Mesa Lake, USdaily high max (Tie, Provisional)32.8 C (91.0 F)tie25 years3 of 100 (Routine)
13 August 2026Blue Mesa Lake, USdaily high min12.8 C (55.0 F)0.6 C (1.1 F)35 years17 of 100 (Routine)
12 August 2026Blue Mesa Lake, USdaily high min13.3 C (55.9 F)0.5 C (0.9 F)23 years12 of 100 (Routine)
12 August 2026Blue Mesa Lake, USdaily high max (Tie)31.7 C (89.1 F)tie56 years5 of 100 (Routine)
11 August 2026Blue Mesa Lake, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)25 years14 of 100 (Routine)
10 August 2026Blue Mesa Lake, USdaily high max33.9 C (93.0 F)1.7 C (3.1 F)25 years17 of 100 (Routine)
9 August 2026Blue Mesa Lake, USdaily high max33.9 C (93.0 F)1.7 C (3.1 F)25 years17 of 100 (Routine)
8 August 2026Blue Mesa Lake, USmonthly high max (Tie)34.4 C (93.9 F)tie0 years3 of 100 (Routine)

Climate Trend

30 complete years, 1971 to 2025
Annual mean temperature at Blue Mesa Lake as warming stripes, 1971 to 2025 One stripe for each of 30 complete years at Blue Mesa Lake, 1971 to 2025. Blue stripes are years cooler than the station's own mean of 4.7 C (40.5 F); red stripes are warmer. The coolest year was 2019, at 3.2 C (37.7 F), and the warmest was 2007, at 5.8 C (42.5 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1971: 5.3 C, +0.5 C from the station mean1990: 5.3 C, +0.5 C from the station mean1991: 4.1 C, -0.7 C from the station mean1993: 3.4 C, -1.3 C from the station mean1994: 4.8 C, 0.0 C from the station mean1995: 5.2 C, +0.5 C from the station mean1996: 4.9 C, +0.1 C from the station mean1997: 3.8 C, -0.9 C from the station mean1998: 5.3 C, +0.6 C from the station mean1999: 5.6 C, +0.8 C from the station mean2000: 5.7 C, +1.0 C from the station mean2001: 5.0 C, +0.3 C from the station mean2004: 4.5 C, -0.2 C from the station mean2006: 4.4 C, -0.3 C from the station mean2007: 5.8 C, +1.1 C from the station mean2008: 3.3 C, -1.5 C from the station mean2009: 4.6 C, -0.1 C from the station mean2010: 4.9 C, +0.2 C from the station mean2011: 4.5 C, -0.3 C from the station mean2013: 3.5 C, -1.3 C from the station mean2014: 4.8 C, 0.0 C from the station mean2015: 5.0 C, +0.3 C from the station mean2018: 5.4 C, +0.6 C from the station mean2019: 3.2 C, -1.6 C from the station mean2020: 5.1 C, +0.4 C from the station mean2021: 5.5 C, +0.8 C from the station mean2022: 4.9 C, +0.2 C from the station mean2023: 4.0 C, -0.7 C from the station mean2024: 5.1 C, +0.4 C from the station mean2025: 5.3 C, +0.6 C from the station mean197119751980198519901995200020052010201520202025
One stripe for each of 30 complete years at Blue Mesa Lake, 1971 to 2025. Blue stripes are years cooler than the station's own mean of 4.7 C (40.5 F); red stripes are warmer. The coolest year was 2019, at 3.2 C (37.7 F), and the warmest was 2007, at 5.8 C (42.5 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Blue Mesa Lake as warming stripes, 1971 to 2025
YearAnnual mean temperatureDifference from the station mean
19715.3 C+0.51 C
19905.3 C+0.51 C
19914.1 C-0.66 C
19933.4 C-1.34 C
19944.8 C+0.03 C
19955.2 C+0.50 C
19964.9 C+0.12 C
19973.8 C-0.92 C
19985.3 C+0.59 C
19995.6 C+0.84 C
20005.7 C+1.00 C
20015.0 C+0.27 C
20044.5 C-0.23 C
20064.4 C-0.31 C
20075.8 C+1.08 C
20083.3 C-1.45 C
20094.6 C-0.10 C
20104.9 C+0.19 C
20114.5 C-0.26 C
20133.5 C-1.29 C
20144.8 C+0.01 C
20155.0 C+0.29 C
20185.4 C+0.64 C
20193.2 C-1.57 C
20205.1 C+0.36 C
20215.5 C+0.78 C
20224.9 C+0.17 C
20234.0 C-0.71 C
20245.1 C+0.36 C
20255.3 C+0.59 C

The fitted trend in annual mean temperature here over 1971 to 2025 is -0.02 C (-0.25 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.05 F (-0.45 to 0.36) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Blue Mesa Lake
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.02 C (-0.25 to 0.20) per decade-0.05 F (-0.45 to 0.36) per decade1971 to 202530Not clearly different from zero
Mean daily maximum0.02 C (-0.24 to 0.29) per decade0.04 F (-0.44 to 0.52) per decade1971 to 202530Not clearly different from zero
Mean daily minimum-0.1 C (-0.3 to 0.1) per decade-0.1 F (-0.5 to 0.2) per decade1971 to 202530Not 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

1967 to 2026
Yearly extremes at Blue Mesa Lake: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)200533.3 C (91.9 F)45
Coldest night (TNn)-37.8 C (-36.0 F)1971-28.9 C (-20.0 F)45
Wettest day (Rx1day)50.8 mm (2.0 in)200417.8 mm (0.7 in)60
Wettest five days (Rx5day)60.2 mm (2.4 in)196929.4 mm (1.2 in)60
Longest dry spell (CDD)132 days200037 days60

Hottest day (TXx)

Hottest day (TXx) at Blue Mesa Lake by year The hottest day of the year at Blue Mesa Lake, 1967 to 2026. The record is 35.6 C (96.1 F) in 2005, marked on the chart; the median year is 33.3 C (91.9 F). 010203040197019801990200020102020Record: 35.6 C (96.1 F) in 2005
The hottest day of the year at Blue Mesa Lake, 1967 to 2026. The record is 35.6 C (96.1 F) in 2005, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Blue Mesa Lake by year
YearHottest day (TXx)
1967n/a
1968n/a
1969n/a
197033.3 C (91.9 F)
197134.4 C (93.9 F)
197233.3 C (91.9 F)
1973n/a
1974n/a
1975n/a
1976n/a
197711.1 C (52.0 F)
197818.9 C (66.0 F)
197931.1 C (88.0 F)
19806.1 C (43.0 F)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
198935.0 C (95.0 F)
199034.4 C (93.9 F)
199131.7 C (89.1 F)
199231.1 C (88.0 F)
199331.1 C (88.0 F)
199432.8 C (91.0 F)
199531.7 C (89.1 F)
199632.8 C (91.0 F)
199732.8 C (91.0 F)
199834.4 C (93.9 F)
199931.1 C (88.0 F)
200032.8 C (91.0 F)
200133.3 C (91.9 F)
200233.9 C (93.0 F)
200335.0 C (95.0 F)
200432.8 C (91.0 F)
200535.6 C (96.1 F)
200632.8 C (91.0 F)
200733.3 C (91.9 F)
200832.2 C (90.0 F)
200932.8 C (91.0 F)
201034.4 C (93.9 F)
201133.3 C (91.9 F)
201233.3 C (91.9 F)
201333.9 C (93.0 F)
201432.2 C (90.0 F)
201531.7 C (89.1 F)
201633.3 C (91.9 F)
201732.2 C (90.0 F)
201832.8 C (91.0 F)
201931.7 C (89.1 F)
202033.3 C (91.9 F)
202135.0 C (95.0 F)
202233.9 C (93.0 F)
202333.9 C (93.0 F)
202433.3 C (91.9 F)
202534.4 C (93.9 F)
202635.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Blue Mesa Lake by year The coldest night of the year at Blue Mesa Lake, 1967 to 2026. The record is -37.8 C (-36.0 F) in 1971, marked on the chart; the median year is -28.9 C (-20.0 F). -40-30-20-100197019801990200020102020Record: -37.8 C (-36.0 F) in 1971
The coldest night of the year at Blue Mesa Lake, 1967 to 2026. The record is -37.8 C (-36.0 F) in 1971, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Blue Mesa Lake by year
YearColdest night (TNn)
1967n/a
1968n/a
1969n/a
1970-26.1 C (-15.0 F)
1971-37.8 C (-36.0 F)
1972-33.9 C (-29.0 F)
1973n/a
1974n/a
1975n/a
1976n/a
1977-25.6 C (-14.1 F)
1978-13.9 C (7.0 F)
1979-1.7 C (28.9 F)
1980-26.1 C (-15.0 F)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989-36.7 C (-34.1 F)
1990-31.1 C (-24.0 F)
1991-28.3 C (-18.9 F)
1992-31.1 C (-24.0 F)
1993-27.8 C (-18.0 F)
1994-31.7 C (-25.1 F)
1995-27.2 C (-17.0 F)
1996-30.0 C (-22.0 F)
1997-29.4 C (-20.9 F)
1998-26.1 C (-15.0 F)
1999-25.0 C (-13.0 F)
2000-26.1 C (-15.0 F)
2001-27.8 C (-18.0 F)
2002-27.8 C (-18.0 F)
2003-25.0 C (-13.0 F)
2004-34.4 C (-29.9 F)
2005-31.1 C (-24.0 F)
2006-32.8 C (-27.0 F)
2007-27.8 C (-18.0 F)
2008-34.4 C (-29.9 F)
2009-26.7 C (-16.1 F)
2010-27.8 C (-18.0 F)
2011-33.3 C (-27.9 F)
2012-28.9 C (-20.0 F)
2013-34.4 C (-29.9 F)
2014-24.4 C (-11.9 F)
2015-30.0 C (-22.0 F)
2016-33.3 C (-27.9 F)
2017-20.0 C (-4.0 F)
2018-24.4 C (-11.9 F)
2019-31.7 C (-25.1 F)
2020-28.9 C (-20.0 F)
2021-30.0 C (-22.0 F)
2022-29.4 C (-20.9 F)
2023-31.1 C (-24.0 F)
2024-24.4 C (-11.9 F)
2025-33.3 C (-27.9 F)
2026-27.2 C (-17.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Blue Mesa Lake by year The wettest day of the year at Blue Mesa Lake, 1967 to 2026. The record is 50.8 mm (2.0 in) in 2004, marked on the chart; the median year is 17.8 mm (0.7 in). 0204060197019801990200020102020Record: 50.8 mm (2.0 in) in 2004
The wettest day of the year at Blue Mesa Lake, 1967 to 2026. The record is 50.8 mm (2.0 in) in 2004, marked on the chart; the median year is 17.8 mm (0.7 in).
Wettest day (Rx1day) at Blue Mesa Lake by year
YearWettest day (Rx1day)
19675.8 mm (0.23 in)
196816.0 mm (0.6 in)
196947.5 mm (1.9 in)
197028.2 mm (1.1 in)
197118.5 mm (0.7 in)
197226.2 mm (1.0 in)
197316.5 mm (0.6 in)
197417.8 mm (0.7 in)
197518.3 mm (0.7 in)
197616.5 mm (0.6 in)
197738.1 mm (1.5 in)
197816.8 mm (0.7 in)
197913.0 mm (0.5 in)
198014.5 mm (0.6 in)
198125.9 mm (1.0 in)
198223.6 mm (0.9 in)
198320.3 mm (0.8 in)
198419.1 mm (0.8 in)
198517.3 mm (0.7 in)
198617.0 mm (0.7 in)
198735.6 mm (1.4 in)
198825.4 mm (1.0 in)
198911.7 mm (0.5 in)
199017.3 mm (0.7 in)
199116.8 mm (0.7 in)
199228.2 mm (1.1 in)
199316.0 mm (0.6 in)
199413.5 mm (0.5 in)
199516.5 mm (0.6 in)
199617.8 mm (0.7 in)
199724.4 mm (1.0 in)
199819.1 mm (0.8 in)
199914.0 mm (0.6 in)
200021.6 mm (0.9 in)
200115.2 mm (0.6 in)
200219.8 mm (0.8 in)
200330.5 mm (1.2 in)
200450.8 mm (2.0 in)
200515.2 mm (0.6 in)
200615.2 mm (0.6 in)
200743.2 mm (1.7 in)
200823.4 mm (0.9 in)
20098.4 mm (0.33 in)
201014.5 mm (0.6 in)
201110.4 mm (0.4 in)
201225.4 mm (1.0 in)
201322.1 mm (0.9 in)
201419.1 mm (0.8 in)
201512.7 mm (0.5 in)
201622.6 mm (0.9 in)
201715.2 mm (0.6 in)
201810.2 mm (0.4 in)
201920.3 mm (0.8 in)
202015.2 mm (0.6 in)
202114.2 mm (0.6 in)
202216.5 mm (0.6 in)
202317.8 mm (0.7 in)
202425.1 mm (1.0 in)
202527.7 mm (1.1 in)
202610.9 mm (0.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Blue Mesa Lake by year The wettest five days of the year at Blue Mesa Lake, 1967 to 2026. The record is 60.2 mm (2.4 in) in 1969, marked on the chart; the median year is 29.4 mm (1.2 in). 020406080197019801990200020102020Record: 60.2 mm (2.4 in) in 1969
The wettest five days of the year at Blue Mesa Lake, 1967 to 2026. The record is 60.2 mm (2.4 in) in 1969, marked on the chart; the median year is 29.4 mm (1.2 in).
Wettest five days (Rx5day) at Blue Mesa Lake by year
YearWettest five days (Rx5day)
196712.9 mm (0.5 in)
196828.9 mm (1.1 in)
196960.2 mm (2.4 in)
197029.5 mm (1.2 in)
197146.0 mm (1.8 in)
197231.0 mm (1.2 in)
197325.4 mm (1.0 in)
197429.5 mm (1.2 in)
197529.7 mm (1.2 in)
197636.2 mm (1.4 in)
197755.3 mm (2.2 in)
197822.8 mm (0.9 in)
197924.7 mm (1.0 in)
198022.6 mm (0.9 in)
198130.8 mm (1.2 in)
198244.6 mm (1.8 in)
198342.2 mm (1.7 in)
198429.5 mm (1.2 in)
198520.9 mm (0.8 in)
198629.0 mm (1.1 in)
198737.6 mm (1.5 in)
198837.3 mm (1.5 in)
198915.5 mm (0.6 in)
199029.2 mm (1.1 in)
199135.4 mm (1.4 in)
199230.1 mm (1.2 in)
199333.6 mm (1.3 in)
199421.4 mm (0.8 in)
199546.7 mm (1.8 in)
199623.1 mm (0.9 in)
199737.0 mm (1.5 in)
199832.5 mm (1.3 in)
199929.2 mm (1.1 in)
200026.8 mm (1.1 in)
200124.4 mm (1.0 in)
200235.8 mm (1.4 in)
200353.1 mm (2.1 in)
200450.8 mm (2.0 in)
200537.5 mm (1.5 in)
200622.0 mm (0.9 in)
200753.9 mm (2.1 in)
200833.3 mm (1.3 in)
200920.6 mm (0.8 in)
201028.2 mm (1.1 in)
201118.6 mm (0.7 in)
201221.0 mm (0.8 in)
201326.4 mm (1.0 in)
201430.3 mm (1.2 in)
201519.3 mm (0.8 in)
201632.6 mm (1.3 in)
201731.5 mm (1.2 in)
201815.1 mm (0.6 in)
201932.7 mm (1.3 in)
202020.6 mm (0.8 in)
202126.2 mm (1.0 in)
202221.1 mm (0.8 in)
202320.8 mm (0.8 in)
202426.4 mm (1.0 in)
202524.2 mm (1.0 in)
202623.4 mm (0.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Blue Mesa Lake by year The longest dry spell of the year at Blue Mesa Lake, 1967 to 2026. The record is 132 days in 2000, marked on the chart; the median year is 37 days. 050100150197019801990200020102020Record: 132 days in 2000
The longest dry spell of the year at Blue Mesa Lake, 1967 to 2026. The record is 132 days in 2000, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Blue Mesa Lake by year
YearLongest dry spell (CDD)
196720 days
196831 days
196934 days
197028 days
197155 days
197238 days
197340 days
197446 days
197527 days
197653 days
197730 days
197832 days
197956 days
198044 days
198124 days
198234 days
198324 days
198429 days
198526 days
198646 days
198750 days
198872 days
198945 days
199023 days
199141 days
199235 days
199326 days
199449 days
199523 days
199651 days
199741 days
199853 days
199956 days
2000132 days
200189 days
200246 days
200338 days
200467 days
200526 days
200638 days
200740 days
200825 days
200923 days
201026 days
20115 days
201225 days
201327 days
201445 days
201540 days
201629 days
201738 days
201830 days
201933 days
202052 days
202141 days
202226 days
202342 days
202424 days
202526 days
202628 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

30 years with a frost

Across 30 years with a frost, the median last spring frost at Blue Mesa Lake falls on 2 June and the median first autumn frost on 19 September, which leaves a median of 106 days between them.

Fitted over all years, the growing season changes by +5.1 days per decade at this station.

Frost dates and growing season at Blue Mesa Lake
MeasureMedian, all yearsEarliest periodRecent period (1971 to 2025)Recent against earliestFitted trend
Last spring frost2 Junen/a2 Junen/a+0.5 days per decade
First autumn frost19 Septembern/a19 Septembern/a+5.5 days per decade
Growing days106 daysn/a106 daysn/a+5.1 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

48 years, 1968 to 2023

A day with at least 18.1 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 59.7 mm (2.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Blue Mesa Lake: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years18.1 mm (0.7 in)
5 years24.8 mm (1.0 in)
10 years30.7 mm (1.2 in)
25 years40.1 mm (1.6 in)
50 years48.9 mm (1.9 in)Longer than the 48 years of record
100 years59.7 mm (2.4 in)Longer than the 48 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, 48 years of values from 1968 to 2023.

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: 50.8 mm (2.0 in) in 2004; 47.5 mm (1.9 in) in 1969; 43.2 mm (1.7 in) in 2007.

Download the Data

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