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Anaconda Weather Records (USC00240199)

Record envelope, standing records and threshold days for Anaconda (USC00240199), Montana, United States, with 133 years of record.

Key Facts for Anaconda

  • Anaconda (USC00240199) is a weather station in Montana, United States at 46.13 latitude and -112.97 longitude, 1,636 m (5,366 ft) above sea level.
  • The station reports from 1894 to 2026, 133 years of record.
  • 1,464 records set at Anaconda still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Anaconda set a daily record snowfall of 14.5 cm (5.7 in) 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: Montana, United States, 46.13 latitude, -112.97 longitude.
  • Elevation: 1,636 m (5,366 ft).
  • Period of record: 1894 to 2026, 133 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Anaconda, with 2026 drawn through them The band shows the record high and record low for each calendar day at Anaconda. The lines show the 2026 daily maximum and minimum. 13 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 Anaconda. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Anaconda, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-38.3 C (-36.9 F)11.7 C (53.1 F)-17.8 C (0.0 F)
Feb18.3 C (64.9 F)-37.2 C (-35.0 F)18.3 C (64.9 F)-17.2 C (1.0 F)
Mar22.2 C (72.0 F)-29.4 C (-20.9 F)22.2 C (72.0 F)-13.3 C (8.1 F)
Apr28.3 C (82.9 F)-18.9 C (-2.0 F)25.6 C (78.1 F)-8.9 C (16.0 F)
May32.8 C (91.0 F)-10.0 C (14.0 F)28.3 C (82.9 F)-5.0 C (23.0 F)
Jun35.6 C (96.1 F)-5.0 C (23.0 F)26.7 C (80.1 F)-3.3 C (26.1 F)
Jul37.8 C (100.0 F)-1.1 C (30.0 F)36.7 C (98.1 F)3.9 C (39.0 F)
Aug38.9 C (102.0 F)-5.0 C (23.0 F)33.9 C (93.0 F)0.6 C (33.1 F)
Sep36.1 C (97.0 F)-11.7 C (10.9 F)26.1 C (79.0 F)-3.3 C (26.1 F)
Oct31.1 C (88.0 F)-22.8 C (-9.0 F)26.7 C (80.1 F)-3.3 C (26.1 F)
Nov23.3 C (73.9 F)-30.0 C (-22.0 F)n/an/a
Dec15.6 C (60.1 F)-38.9 C (-38.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Anaconda by the year they were set 1,464 records at Anaconda still stand. 1924 holds the most, with 57. 02040601901: 211902: 251903: 181904: 141905: 361906: 291907: 211908: 251909: 291910: 271911: 141912: 211913: 281914: 151915: 91916: 351917: 271918: 341919: 431920: 201921: 331922: 111923: 231924: 571925: 171926: 221927: 141982: 51983: 321984: 261985: 371986: 291987: 261988: 141989: 241990: 231991: 161992: 221993: 191994: 211995: 191996: 201997: 151998: 101999: 132000: 182001: 172002: 342003: 362004: 122005: 202006: 192007: 202008: 212009: 232010: 152011: 152012: 102016: 92017: 212018: 142021: 122022: 362023: 172024: 162025: 182026: 221901190819151922198319901997200420112023
1,464 records at Anaconda still stand. 1924 holds the most, with 57.
Standing records at Anaconda by the year they were set
Year setStanding records
190121
190225
190318
190414
190536
190629
190721
190825
190929
191027
191114
191221
191328
191415
19159
191635
191727
191834
191943
192020
192133
192211
192323
192457
192517
192622
192714
19825
198332
198426
198537
198629
198726
198814
198924
199023
199116
199222
199319
199421
199519
199620
199715
199810
199913
200018
200117
200234
200336
200412
200520
200619
200720
200821
200923
201015
201115
201210
20169
201721
201814
202112
202236
202317
202416
202518
202622

All-Time Record Progression

2 new records
When Anaconda set new all-time records 2 all-time records were set at Anaconda between 2 February 1989 and 1 August 1994. Each dot is a new record. Record low maximum temperatureRecord high minimum temperature2 February 1989: Record low maximum temperature -28.9 C (-20.0 F)1 August 1994: Record high minimum temperature 19.4 C (66.9 F)19901995
2 all-time records were set at Anaconda between 2 February 1989 and 1 August 1994. Each dot is a new record.
When Anaconda set new all-time records
DateKindDetail
1989-02-02Record low maximum temperatureRecord low maximum temperature -28.9 C (-20.0 F)
1994-08-01Record high minimum temperatureRecord high minimum temperature 19.4 C (66.9 F)

Wettest Day of Each Month

Jun: 58.4 mm (2.3 in)
Record daily precipitation for each month at Anaconda The wettest day on record for each calendar month at Anaconda. The most was 58.4 mm (2.3 in) on 21 June 1907. 0204060 Jan: 23.6 mm (0.9 in), 1 January 1997 Jan Feb: 23.9 mm (0.9 in), 27 February 1906 Feb Mar: 29.0 mm (1.1 in), 16 March 2009 Mar Apr: 29.0 mm (1.1 in), 6 April 2006 Apr May: 55.9 mm (2.2 in), 10 May 1914 May Jun: 58.4 mm (2.3 in), 21 June 1907 Jun Jul: 46.5 mm (1.8 in), 6 July 1994 Jul Aug: 27.7 mm (1.1 in), 7 August 2009 Aug Sep: 39.4 mm (1.6 in), 1 September 2008 Sep Oct: 37.6 mm (1.5 in), 11 October 1911 Oct Nov: 57.2 mm (2.3 in), 22 November 1924 Nov Dec: 24.6 mm (1.0 in), 29 December 2008 Dec
The wettest day on record for each calendar month at Anaconda. The most was 58.4 mm (2.3 in) on 21 June 1907.
Record daily precipitation for each month at Anaconda
MonthRecord daily precipitation (mm)Date
Jan23.6 mm (0.9 in)1 January 1997
Feb23.9 mm (0.9 in)27 February 1906
Mar29.0 mm (1.1 in)16 March 2009
Apr29.0 mm (1.1 in)6 April 2006
May55.9 mm (2.2 in)10 May 1914
Jun58.4 mm (2.3 in)21 June 1907
Jul46.5 mm (1.8 in)6 July 1994
Aug27.7 mm (1.1 in)7 August 2009
Sep39.4 mm (1.6 in)1 September 2008
Oct37.6 mm (1.5 in)11 October 1911
Nov57.2 mm (2.3 in)22 November 1924
Dec24.6 mm (1.0 in)29 December 2008

Period of Record Coverage

1901 to 2026
Days with data per year at Anaconda 69 years of record at Anaconda, 1901 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1901, 1903, 1905, 1916, 1925, 1927, 1982, 1999 and others. 1901: 304 of 365 days1902: 359 of 365 days1903: 269 of 365 days1904: 333 of 366 days1905: 326 of 365 days1906: 340 of 365 days1907: 357 of 365 days1908: 361 of 366 days1909: 360 of 365 days1910: 362 of 365 days1911: 360 of 365 days1912: 357 of 366 days1913: 357 of 365 days1914: 353 of 365 days1915: 354 of 365 days1916: 325 of 366 days1917: 344 of 365 days1918: 336 of 365 days1919: 333 of 365 days1920: 331 of 366 days1921: 333 of 365 days1922: 340 of 365 days1923: 350 of 365 days1924: 366 of 366 days1925: 327 of 365 days1926: 354 of 365 days1927: 145 of 365 days1982: 209 of 365 days1983: 362 of 365 days1984: 360 of 366 days1985: 361 of 365 days1986: 363 of 365 days1987: 360 of 365 days1988: 362 of 366 days1989: 360 of 365 days1990: 364 of 365 days1991: 362 of 365 days1992: 357 of 366 days1993: 356 of 365 days1994: 352 of 365 days1995: 355 of 365 days1996: 337 of 366 days1997: 337 of 365 days1998: 335 of 365 days1999: 302 of 365 days2000: 339 of 366 days2001: 363 of 365 days2002: 364 of 365 days2003: 359 of 365 days2004: 360 of 366 days2005: 359 of 365 days2006: 353 of 365 days2007: 356 of 365 days2008: 361 of 366 days2009: 365 of 365 days2010: 359 of 365 days2011: 361 of 365 days2012: 206 of 366 days2013: 1 of 365 days2016: 304 of 366 days2017: 365 of 365 days2018: 306 of 365 days2019: 31 of 365 days2021: 198 of 365 days2022: 365 of 365 days2023: 355 of 365 days2024: 364 of 366 days2025: 364 of 365 days2026: 272 of 365 days19101920199020002010
69 years of record at Anaconda, 1901 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1901, 1903, 1905, 1916, 1925, 1927, 1982, 1999 and others.
Days with data per year at Anaconda
YearDays with dataShare of yearComplete
190130483%No
190235998%Yes
190326974%No
190433391%Yes
190532689%No
190634093%Yes
190735798%Yes
190836199%Yes
190936099%Yes
191036299%Yes
191136099%Yes
191235798%Yes
191335798%Yes
191435397%Yes
191535497%Yes
191632589%No
191734494%Yes
191833692%Yes
191933391%Yes
192033190%Yes
192133391%Yes
192234093%Yes
192335096%Yes
1924366100%Yes
192532790%No
192635497%Yes
192714540%No
198220957%No
198336299%Yes
198436098%Yes
198536199%Yes
198636399%Yes
198736099%Yes
198836299%Yes
198936099%Yes
1990364100%Yes
199136299%Yes
199235798%Yes
199335698%Yes
199435296%Yes
199535597%Yes
199633792%Yes
199733792%Yes
199833592%Yes
199930283%No
200033993%Yes
200136399%Yes
2002364100%Yes
200335998%Yes
200436098%Yes
200535998%Yes
200635397%Yes
200735698%Yes
200836199%Yes
2009365100%Yes
201035998%Yes
201136199%Yes
201220656%No
201310%No
201630483%No
2017365100%Yes
201830684%No
2019318%No
202119854%No
2022365100%Yes
202335597%Yes
202436499%Yes
2025364100%Yes
202627275%No

Latest Records

20
Latest records at Anaconda
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Anaconda, USdaily snowfall (Provisional)14.5 cm (5.7 in)9.4 cm (3.7 in)115 years58 of 100 (Notable)
11 October 2026Anaconda, USdaily snow depth (Provisional)15.2 cm (6.0 in)7.6 cm (3.0 in)40 years30 of 100 (Routine)
4 August 2026Anaconda, USdaily low min (Tie)2.2 C (36.0 F)tie29 years4 of 100 (Routine)
3 August 2026Anaconda, USdaily low max18.9 C (66.0 F)1.1 C (2.0 F)119 years42 of 100 (Notable)
25 July 2026Anaconda, USdaily high max (Tie)34.4 C (93.9 F)tie101 years10 of 100 (Routine)
22 July 2026Anaconda, USdaily high min15.0 C (59.0 F)1.1 C (2.0 F)107 years43 of 100 (Notable)
17 July 2026Anaconda, USdaily high max36.7 C (98.1 F)0.6 C (1.1 F)21 years17 of 100 (Routine)
29 June 2026Anaconda, USdaily low max11.7 C (53.1 F)2.2 C (4.0 F)109 years43 of 100 (Notable)
28 June 2026Anaconda, USdaily low max10.6 C (51.1 F)4.4 C (7.9 F)20 years23 of 100 (Routine)
14 June 2026Anaconda, USdaily low min-1.1 C (30.0 F)1.7 C (3.1 F)119 years45 of 100 (Notable)
8 June 2026Anaconda, USdaily low min-3.3 C (26.1 F)2.2 C (4.0 F)44 years29 of 100 (Routine)
25 April 2026Anaconda, USdaily low max3.9 C (39.0 F)0.5 C (0.9 F)41 years22 of 100 (Routine)
24 April 2026Anaconda, USdaily low min-8.9 C (16.0 F)2.2 C (4.0 F)119 years45 of 100 (Notable)
24 April 2026Anaconda, USdaily snowfall9.9 cm (3.9 in)2.3 cm (0.9 in)124 years45 of 100 (Notable)
25 March 2026Anaconda, USdaily high min5.0 C (41.0 F)1.7 C (3.1 F)0 years13 of 100 (Routine)
21 March 2026Anaconda, USdaily high max19.4 C (66.9 F)0.5 C (0.9 F)21 years16 of 100 (Routine)
20 March 2026Anaconda, USmonthly high max22.2 C (72.0 F)0.5 C (0.9 F)21 years26 of 100 (Routine)
19 March 2026Anaconda, USdaily high max21.1 C (70.0 F)1.1 C (2.0 F)37 years22 of 100 (Routine)
18 March 2026Anaconda, USdaily high max18.9 C (66.0 F)1.1 C (2.0 F)116 years41 of 100 (Notable)
17 March 2026Anaconda, USdaily high min5.6 C (42.1 F)0.6 C (1.1 F)21 years17 of 100 (Routine)

Climate Trend

48 complete years, 1902 to 2025
Annual mean temperature at Anaconda as warming stripes, 1902 to 2025 One stripe for each of 48 complete years at Anaconda, 1902 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (42.9 F); red stripes are warmer. The coolest year was 1985, at 4.4 C (39.9 F), and the warmest was 1988, at 7.6 C (45.6 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1902: 5.2 C, -0.8 C from the station mean1906: 6.7 C, +0.6 C from the station mean1907: 5.4 C, -0.7 C from the station mean1908: 5.8 C, -0.3 C from the station mean1909: 5.1 C, -0.9 C from the station mean1910: 6.3 C, +0.2 C from the station mean1911: 4.5 C, -1.6 C from the station mean1912: 4.9 C, -1.2 C from the station mean1913: 4.7 C, -1.3 C from the station mean1914: 6.1 C, 0.0 C from the station mean1915: 6.1 C, 0.0 C from the station mean1917: 5.7 C, -0.4 C from the station mean1923: 6.5 C, +0.4 C from the station mean1924: 6.7 C, +0.6 C from the station mean1926: 6.8 C, +0.7 C from the station mean1983: 5.7 C, -0.4 C from the station mean1984: 5.5 C, -0.6 C from the station mean1985: 4.4 C, -1.7 C from the station mean1986: 6.6 C, +0.5 C from the station mean1987: 7.3 C, +1.2 C from the station mean1988: 7.6 C, +1.5 C from the station mean1989: 5.9 C, -0.2 C from the station mean1990: 6.6 C, +0.6 C from the station mean1991: 6.8 C, +0.7 C from the station mean1992: 7.5 C, +1.4 C from the station mean1993: 4.9 C, -1.2 C from the station mean1994: 7.1 C, +1.1 C from the station mean1995: 6.1 C, 0.0 C from the station mean1996: 5.4 C, -0.7 C from the station mean1997: 5.8 C, -0.2 C from the station mean1998: 6.9 C, +0.8 C from the station mean2000: 6.6 C, +0.5 C from the station mean2001: 6.8 C, +0.7 C from the station mean2002: 5.5 C, -0.5 C from the station mean2003: 6.9 C, +0.8 C from the station mean2004: 6.6 C, +0.5 C from the station mean2005: 6.1 C, 0.0 C from the station mean2006: 6.8 C, +0.7 C from the station mean2007: 6.9 C, +0.8 C from the station mean2008: 5.7 C, -0.4 C from the station mean2009: 6.0 C, -0.1 C from the station mean2010: 6.0 C, -0.1 C from the station mean2011: 5.9 C, -0.1 C from the station mean2017: 6.2 C, +0.1 C from the station mean2022: 5.4 C, -0.6 C from the station mean2023: 5.4 C, -0.7 C from the station mean2024: 6.4 C, +0.3 C from the station mean2025: 6.4 C, +0.3 C from the station mean1902191019201930194019501960197019801990200020102020
One stripe for each of 48 complete years at Anaconda, 1902 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (42.9 F); red stripes are warmer. The coolest year was 1985, at 4.4 C (39.9 F), and the warmest was 1988, at 7.6 C (45.6 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Anaconda as warming stripes, 1902 to 2025
YearAnnual mean temperatureDifference from the station mean
19025.2 C-0.84 C
19066.7 C+0.62 C
19075.4 C-0.73 C
19085.8 C-0.31 C
19095.1 C-0.94 C
19106.3 C+0.17 C
19114.5 C-1.57 C
19124.9 C-1.19 C
19134.7 C-1.34 C
19146.1 C-0.02 C
19156.1 C-0.03 C
19175.7 C-0.38 C
19236.5 C+0.40 C
19246.7 C+0.58 C
19266.8 C+0.74 C
19835.7 C-0.41 C
19845.5 C-0.61 C
19854.4 C-1.68 C
19866.6 C+0.50 C
19877.3 C+1.23 C
19887.6 C+1.48 C
19895.9 C-0.22 C
19906.6 C+0.56 C
19916.8 C+0.67 C
19927.5 C+1.44 C
19934.9 C-1.17 C
19947.1 C+1.05 C
19956.1 C+0.02 C
19965.4 C-0.69 C
19975.8 C-0.25 C
19986.9 C+0.80 C
20006.6 C+0.52 C
20016.8 C+0.74 C
20025.5 C-0.55 C
20036.9 C+0.82 C
20046.6 C+0.52 C
20056.1 C-0.03 C
20066.8 C+0.69 C
20076.9 C+0.78 C
20085.7 C-0.38 C
20096.0 C-0.12 C
20106.0 C-0.11 C
20115.9 C-0.15 C
20176.2 C+0.08 C
20225.4 C-0.64 C
20235.4 C-0.66 C
20246.4 C+0.30 C
20256.4 C+0.28 C

The fitted trend in annual mean temperature here over 1902 to 2025 is 0.1 C (0.0 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (0.0 to 0.2) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Anaconda
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.0 to 0.1) per decade0.1 F (0.0 to 0.2) per decade1902 to 202548Not clearly different from zero
Mean daily maximum0.11 C (0.04 to 0.18) per decade0.2 F (0.1 to 0.3) per decade1902 to 202548Rise
Mean daily minimum-0.01 C (-0.05 to 0.04) per decade-0.02 F (-0.10 to 0.06) per decade1902 to 202548Not 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

1894 to 2026
Yearly extremes at Anaconda: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)192433.9 C (93.0 F)69
Coldest night (TNn)-38.9 C (-38.0 F)1983-28.9 C (-20.0 F)69
Wettest day (Rx1day)58.4 mm (2.3 in)190723.3 mm (0.9 in)70
Wettest five days (Rx5day)179.0 mm (7.0 in)190740.9 mm (1.6 in)69
Longest dry spell (CDD)119 days190226 days70

Hottest day (TXx)

Hottest day (TXx) at Anaconda by year The hottest day of the year at Anaconda, 1894 to 2026. The record is 38.9 C (102.0 F) in 1924, marked on the chart; the median year is 33.9 C (93.0 F). 0102030401900192019401960198020002020Record: 38.9 C (102.0 F) in 1924
The hottest day of the year at Anaconda, 1894 to 2026. The record is 38.9 C (102.0 F) in 1924, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Anaconda by year
YearHottest day (TXx)
1894n/a
190135.6 C (96.1 F)
190231.7 C (89.1 F)
190335.0 C (95.0 F)
190433.3 C (91.9 F)
190532.8 C (91.0 F)
190635.6 C (96.1 F)
190729.4 C (84.9 F)
190834.4 C (93.9 F)
190933.9 C (93.0 F)
191033.9 C (93.0 F)
191131.1 C (88.0 F)
191231.7 C (89.1 F)
191331.7 C (89.1 F)
191431.7 C (89.1 F)
191532.8 C (91.0 F)
191633.3 C (91.9 F)
191735.6 C (96.1 F)
191833.9 C (93.0 F)
191935.6 C (96.1 F)
192034.4 C (93.9 F)
192135.6 C (96.1 F)
192232.2 C (90.0 F)
192336.7 C (98.1 F)
192438.9 C (102.0 F)
192535.0 C (95.0 F)
192637.8 C (100.0 F)
192728.9 C (84.0 F)
198232.8 C (91.0 F)
198336.7 C (98.1 F)
198433.3 C (91.9 F)
198535.6 C (96.1 F)
198633.9 C (93.0 F)
198732.2 C (90.0 F)
198835.0 C (95.0 F)
198933.9 C (93.0 F)
199035.0 C (95.0 F)
199133.3 C (91.9 F)
199233.3 C (91.9 F)
199330.6 C (87.1 F)
199433.3 C (91.9 F)
199532.8 C (91.0 F)
199633.3 C (91.9 F)
199732.2 C (90.0 F)
199835.6 C (96.1 F)
199932.8 C (91.0 F)
200037.2 C (99.0 F)
200135.6 C (96.1 F)
200237.8 C (100.0 F)
200336.1 C (97.0 F)
200436.1 C (97.0 F)
200535.0 C (95.0 F)
200636.1 C (97.0 F)
200737.2 C (99.0 F)
200833.9 C (93.0 F)
200935.0 C (95.0 F)
201033.9 C (93.0 F)
201134.4 C (93.9 F)
201234.4 C (93.9 F)
20137.2 C (45.0 F)
201632.8 C (91.0 F)
201733.9 C (93.0 F)
201835.0 C (95.0 F)
20199.4 C (48.9 F)
202133.9 C (93.0 F)
202235.6 C (96.1 F)
202332.8 C (91.0 F)
202434.4 C (93.9 F)
202532.8 C (91.0 F)
202636.7 C (98.1 F)

Coldest night (TNn)

Coldest night (TNn) at Anaconda by year The coldest night of the year at Anaconda, 1894 to 2026. The record is -38.9 C (-38.0 F) in 1983, marked on the chart; the median year is -28.9 C (-20.0 F). -40-30-20-1001900192019401960198020002020Record: -38.9 C (-38.0 F) in 1983
The coldest night of the year at Anaconda, 1894 to 2026. The record is -38.9 C (-38.0 F) in 1983, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Anaconda by year
YearColdest night (TNn)
1894n/a
1901-22.2 C (-8.0 F)
1902-33.3 C (-27.9 F)
1903-23.3 C (-9.9 F)
1904-20.6 C (-5.1 F)
1905-36.1 C (-33.0 F)
1906-27.2 C (-17.0 F)
1907-31.7 C (-25.1 F)
1908-27.8 C (-18.0 F)
1909-31.7 C (-25.1 F)
1910-33.9 C (-29.0 F)
1911-28.9 C (-20.0 F)
1912-23.9 C (-11.0 F)
1913-27.8 C (-18.0 F)
1914-33.3 C (-27.9 F)
1915-28.3 C (-18.9 F)
1916-35.0 C (-31.0 F)
1917-27.2 C (-17.0 F)
1918-34.4 C (-29.9 F)
1919-33.9 C (-29.0 F)
1920-29.4 C (-20.9 F)
1921-27.2 C (-17.0 F)
1922-28.9 C (-20.0 F)
1923-31.7 C (-25.1 F)
1924-35.0 C (-31.0 F)
1925-18.9 C (-2.0 F)
1926-29.4 C (-20.9 F)
1927-33.9 C (-29.0 F)
1982-24.4 C (-11.9 F)
1983-38.9 C (-38.0 F)
1984-29.4 C (-20.9 F)
1985-33.3 C (-27.9 F)
1986-30.0 C (-22.0 F)
1987-26.7 C (-16.1 F)
1988-25.0 C (-13.0 F)
1989-37.2 C (-35.0 F)
1990-36.7 C (-34.1 F)
1991-27.8 C (-18.0 F)
1992-24.4 C (-11.9 F)
1993-28.9 C (-20.0 F)
1994-25.0 C (-13.0 F)
1995-26.1 C (-15.0 F)
1996-31.7 C (-25.1 F)
1997-32.2 C (-26.0 F)
1998-32.8 C (-27.0 F)
1999-20.0 C (-4.0 F)
2000-25.6 C (-14.1 F)
2001-27.2 C (-17.0 F)
2002-27.2 C (-17.0 F)
2003-31.1 C (-24.0 F)
2004-33.3 C (-27.9 F)
2005-27.8 C (-18.0 F)
2006-32.8 C (-27.0 F)
2007-29.4 C (-20.9 F)
2008-31.7 C (-25.1 F)
2009-30.6 C (-23.1 F)
2010-26.7 C (-16.1 F)
2011-28.3 C (-18.9 F)
2012-20.0 C (-4.0 F)
2013-8.3 C (17.1 F)
2016-31.7 C (-25.1 F)
2017-28.3 C (-18.9 F)
2018-26.1 C (-15.0 F)
2019-22.8 C (-9.0 F)
2021-20.6 C (-5.1 F)
2022-37.2 C (-35.0 F)
2023-30.6 C (-23.1 F)
2024-38.3 C (-36.9 F)
2025-30.6 C (-23.1 F)
2026-17.8 C (0.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Anaconda by year The wettest day of the year at Anaconda, 1894 to 2026. The record is 58.4 mm (2.3 in) in 1907, marked on the chart; the median year is 23.3 mm (0.9 in). 02040601900192019401960198020002020Record: 58.4 mm (2.3 in) in 1907
The wettest day of the year at Anaconda, 1894 to 2026. The record is 58.4 mm (2.3 in) in 1907, marked on the chart; the median year is 23.3 mm (0.9 in).
Wettest day (Rx1day) at Anaconda by year
YearWettest day (Rx1day)
189413.2 mm (0.5 in)
190119.1 mm (0.8 in)
190229.2 mm (1.1 in)
190319.1 mm (0.8 in)
190412.7 mm (0.5 in)
190518.3 mm (0.7 in)
190623.9 mm (0.9 in)
190758.4 mm (2.3 in)
190843.7 mm (1.7 in)
190942.9 mm (1.7 in)
191030.2 mm (1.2 in)
191137.6 mm (1.5 in)
191235.6 mm (1.4 in)
191347.2 mm (1.9 in)
191455.9 mm (2.2 in)
191533.0 mm (1.3 in)
191621.6 mm (0.9 in)
191728.4 mm (1.1 in)
191819.6 mm (0.8 in)
191923.1 mm (0.9 in)
192016.5 mm (0.6 in)
192117.8 mm (0.7 in)
192222.4 mm (0.9 in)
192312.7 mm (0.5 in)
192457.2 mm (2.3 in)
192535.1 mm (1.4 in)
192637.6 mm (1.5 in)
192712.2 mm (0.5 in)
198224.6 mm (1.0 in)
198333.3 mm (1.3 in)
198439.6 mm (1.6 in)
198523.6 mm (0.9 in)
198619.3 mm (0.8 in)
198721.3 mm (0.8 in)
198820.3 mm (0.8 in)
198927.9 mm (1.1 in)
199022.9 mm (0.9 in)
199123.1 mm (0.9 in)
199223.4 mm (0.9 in)
199323.6 mm (0.9 in)
199446.5 mm (1.8 in)
199520.6 mm (0.8 in)
199620.8 mm (0.8 in)
199733.0 mm (1.3 in)
199821.6 mm (0.9 in)
199910.7 mm (0.4 in)
200017.8 mm (0.7 in)
200137.6 mm (1.5 in)
200225.9 mm (1.0 in)
200324.6 mm (1.0 in)
200414.7 mm (0.6 in)
200535.1 mm (1.4 in)
200629.0 mm (1.1 in)
200729.0 mm (1.1 in)
200839.4 mm (1.6 in)
200929.0 mm (1.1 in)
201031.8 mm (1.3 in)
201138.4 mm (1.5 in)
201220.6 mm (0.8 in)
20130.0 mm (0.00 in)
201617.0 mm (0.7 in)
201746.0 mm (1.8 in)
201818.3 mm (0.7 in)
20198.9 mm (0.35 in)
202119.3 mm (0.8 in)
202220.6 mm (0.8 in)
202322.9 mm (0.9 in)
202416.0 mm (0.6 in)
202517.5 mm (0.7 in)
202623.1 mm (0.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Anaconda by year The wettest five days of the year at Anaconda, 1894 to 2026. The record is 179.0 mm (7.0 in) in 1907, marked on the chart; the median year is 40.9 mm (1.6 in). 0501001502001900192019401960198020002020Record: 179.0 mm (7.0 in) in 1907
The wettest five days of the year at Anaconda, 1894 to 2026. The record is 179.0 mm (7.0 in) in 1907, marked on the chart; the median year is 40.9 mm (1.6 in).
Wettest five days (Rx5day) at Anaconda by year
YearWettest five days (Rx5day)
189438.0 mm (1.5 in)
190132.3 mm (1.3 in)
190243.2 mm (1.7 in)
190319.1 mm (0.8 in)
190414.0 mm (0.6 in)
190536.1 mm (1.4 in)
190666.9 mm (2.6 in)
1907179.0 mm (7.0 in)
1908153.7 mm (6.1 in)
1909110.9 mm (4.4 in)
191063.7 mm (2.5 in)
191140.9 mm (1.6 in)
191242.5 mm (1.7 in)
191353.0 mm (2.1 in)
191455.9 mm (2.2 in)
191539.1 mm (1.5 in)
191636.3 mm (1.4 in)
191751.0 mm (2.0 in)
191845.5 mm (1.8 in)
191937.6 mm (1.5 in)
192053.0 mm (2.1 in)
192140.5 mm (1.6 in)
192238.1 mm (1.5 in)
192326.3 mm (1.0 in)
192473.0 mm (2.9 in)
192554.4 mm (2.1 in)
192643.2 mm (1.7 in)
192731.5 mm (1.2 in)
198238.8 mm (1.5 in)
198335.3 mm (1.4 in)
198442.6 mm (1.7 in)
198546.4 mm (1.8 in)
198636.5 mm (1.4 in)
198745.1 mm (1.8 in)
198827.6 mm (1.1 in)
198935.5 mm (1.4 in)
199032.3 mm (1.3 in)
199128.6 mm (1.1 in)
199254.6 mm (2.1 in)
199343.4 mm (1.7 in)
199456.2 mm (2.2 in)
199540.4 mm (1.6 in)
199630.4 mm (1.2 in)
199743.4 mm (1.7 in)
199834.3 mm (1.4 in)
199921.1 mm (0.8 in)
200020.7 mm (0.8 in)
200147.0 mm (1.9 in)
200248.0 mm (1.9 in)
200341.8 mm (1.6 in)
200434.6 mm (1.4 in)
200553.0 mm (2.1 in)
200654.8 mm (2.2 in)
200750.7 mm (2.0 in)
200849.8 mm (2.0 in)
200945.9 mm (1.8 in)
201048.4 mm (1.9 in)
201163.6 mm (2.5 in)
201236.6 mm (1.4 in)
2013n/a
201629.0 mm (1.1 in)
201748.3 mm (1.9 in)
201860.5 mm (2.4 in)
20199.4 mm (0.37 in)
202127.6 mm (1.1 in)
202225.7 mm (1.0 in)
202334.1 mm (1.3 in)
202416.8 mm (0.7 in)
202532.0 mm (1.3 in)
202630.5 mm (1.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Anaconda by year The longest dry spell of the year at Anaconda, 1894 to 2026. The record is 119 days in 1902, marked on the chart; the median year is 26 days. 0501001501900192019401960198020002020Record: 119 days in 1902
The longest dry spell of the year at Anaconda, 1894 to 2026. The record is 119 days in 1902, marked on the chart; the median year is 26 days.
Longest dry spell (CDD) at Anaconda by year
YearLongest dry spell (CDD)
18949 days
190165 days
1902119 days
190325 days
190495 days
190533 days
190622 days
190726 days
190827 days
190932 days
191023 days
191131 days
191241 days
191326 days
191433 days
191521 days
191617 days
191736 days
191843 days
191929 days
192019 days
192126 days
192216 days
192325 days
192419 days
192519 days
192629 days
192716 days
198218 days
198338 days
198424 days
198557 days
198625 days
198735 days
198837 days
198922 days
199033 days
199132 days
199218 days
199321 days
199427 days
199517 days
199631 days
199736 days
199832 days
199953 days
200028 days
200124 days
200230 days
200325 days
200425 days
200529 days
200626 days
200720 days
200822 days
200926 days
201019 days
201118 days
201222 days
20131 day
201624 days
201729 days
201831 days
201923 days
202119 days
202227 days
202323 days
202429 days
202520 days
202631 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

48 years with a frost

Across 48 years with a frost, the median last spring frost at Anaconda falls on 12 June and the median first autumn frost on 11 September, which leaves a median of 93 days between them.

Fitted over all years, the growing season changes by +0.4 days per decade at this station.

Frost dates and growing season at Anaconda
MeasureMedian, all yearsEarliest periodRecent period (1986 to 2025)Recent against earliestFitted trend
Last spring frost12 Junen/a16 Junen/a+0.4 days per decade
First autumn frost11 Septembern/a11 Septembern/a+0.9 days per decade
Growing days93 daysn/a92 daysn/a+0.4 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

49 years, 1902 to 2025

A day with at least 27.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 66.5 mm (2.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Anaconda: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years27.8 mm (1.1 in)
5 years38.1 mm (1.5 in)
10 years44.9 mm (1.8 in)
25 years53.6 mm (2.1 in)
50 years60.1 mm (2.4 in)Longer than the 49 years of record
100 years66.5 mm (2.6 in)Longer than the 49 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, 49 years of values from 1902 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: 58.4 mm (2.3 in) in 1907; 57.2 mm (2.3 in) in 1924; 55.9 mm (2.2 in) in 1914.

Station Changes

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

Download the Data

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