Built 2026-10-19 (19 October 2026)

Black Bear Weather Records (USS0011E35S)

Record envelope, standing records and threshold days for Black Bear (USS0011E35S), Montana, United States, with 49 years of record.

Key Facts for Black Bear

  • Black Bear (USS0011E35S) is a weather station in Montana, United States at 44.51 latitude and -111.13 longitude, 2,490 m (8,170 ft) above sea level.
  • The station reports from 1978 to 2026, 49 years of record.
  • 1,464 records set at Black Bear still stand.
  • Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
  • Black Bear set a daily record high maximum temperature of 18.7 C (65.7 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: Montana, United States, 44.51 latitude, -111.13 longitude.
  • Elevation: 2,490 m (8,170 ft).
  • Period of record: 1978 to 2026, 49 years.
  • Eligible elements: tmax, tmin, prcp, snwd.

Daily Record Envelope and 2026

11 days at or beyond a record
Daily record high and record low at Black Bear, with 2026 drawn through them The band shows the record high and record low for each calendar day at Black Bear. The lines show the 2026 daily maximum and minimum. 11 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 Black Bear. The lines show the 2026 daily maximum and minimum. 11 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Black Bear, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.5 C (52.7 F)-47.2 C (-53.0 F)0.6 C (33.1 F)-25.5 C (-13.9 F)
Feb14.0 C (57.2 F)-42.6 C (-44.7 F)10.7 C (51.3 F)-26.4 C (-15.5 F)
Mar16.1 C (61.0 F)-37.3 C (-35.1 F)15.2 C (59.4 F)-20.6 C (-5.1 F)
Apr22.0 C (71.6 F)-26.2 C (-15.2 F)16.4 C (61.5 F)-17.7 C (0.1 F)
May25.0 C (77.0 F)-21.0 C (-5.8 F)22.1 C (71.8 F)-12.3 C (9.9 F)
Jun30.1 C (86.2 F)-11.1 C (12.0 F)23.2 C (73.8 F)-3.2 C (26.2 F)
Jul32.7 C (90.9 F)-6.6 C (20.1 F)31.0 C (87.8 F)2.1 C (35.8 F)
Aug31.1 C (88.0 F)-5.9 C (21.4 F)28.6 C (83.5 F)1.3 C (34.3 F)
Sep29.8 C (85.6 F)-19.7 C (-3.5 F)20.8 C (69.4 F)-2.8 C (27.0 F)
Oct23.6 C (74.5 F)-24.0 C (-11.2 F)20.5 C (68.9 F)-5.3 C (22.5 F)
Nov15.5 C (59.9 F)-32.7 C (-26.9 F)n/an/a
Dec9.9 C (49.8 F)-40.7 C (-41.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Black Bear by the year they were set 1,464 records at Black Bear still stand. 1985 holds the most, with 93. 02550751001983: 161984: 741985: 931986: 451987: 631988: 511989: 541990: 261991: 211992: 231993: 341994: 241995: 301996: 331997: 141998: 141999: 332000: 192001: 262002: 332003: 472004: 292005: 242006: 302007: 272008: 432009: 272010: 292011: 132012: 302013: 362014: 452015: 522016: 342017: 242018: 142019: 242020: 302021: 352022: 342023: 262024: 302025: 342026: 21198319881993199820032008201320182023
1,464 records at Black Bear still stand. 1985 holds the most, with 93.
Standing records at Black Bear by the year they were set
Year setStanding records
198316
198474
198593
198645
198763
198851
198954
199026
199121
199223
199334
199424
199530
199633
199714
199814
199933
200019
200126
200233
200347
200429
200524
200630
200727
200843
200927
201029
201113
201230
201336
201445
201552
201634
201724
201814
201924
202030
202135
202234
202326
202430
202534
202621

Wettest Day of Each Month

Jan: 86.4 mm (3.4 in)
Record daily precipitation for each month at Black Bear The wettest day on record for each calendar month at Black Bear. The most was 86.4 mm (3.4 in) on 2 January 1997. 0255075100 Jan: 86.4 mm (3.4 in), 2 January 1997 Jan Feb: 63.5 mm (2.5 in), 25 February 2019 Feb Mar: 73.7 mm (2.9 in), 6 March 1986 Mar Apr: 40.6 mm (1.6 in), 12 April 1986 Apr May: 50.8 mm (2.0 in), 15 May 2001 May Jun: 68.6 mm (2.7 in), 7 June 2011 Jun Jul: 33.0 mm (1.3 in), 10 July 1987 Jul Aug: 40.6 mm (1.6 in), 30 August 2014 Aug Sep: 40.6 mm (1.6 in), 6 September 2002 Sep Oct: 61.0 mm (2.4 in), 24 October 2010 Oct Nov: 55.9 mm (2.2 in), 23 November 1988 Nov Dec: 76.2 mm (3.0 in), 29 December 1996 Dec
The wettest day on record for each calendar month at Black Bear. The most was 86.4 mm (3.4 in) on 2 January 1997.
Record daily precipitation for each month at Black Bear
MonthRecord daily precipitation (mm)Date
Jan86.4 mm (3.4 in)2 January 1997
Feb63.5 mm (2.5 in)25 February 2019
Mar73.7 mm (2.9 in)6 March 1986
Apr40.6 mm (1.6 in)12 April 1986
May50.8 mm (2.0 in)15 May 2001
Jun68.6 mm (2.7 in)7 June 2011
Jul33.0 mm (1.3 in)10 July 1987
Aug40.6 mm (1.6 in)30 August 2014
Sep40.6 mm (1.6 in)6 September 2002
Oct61.0 mm (2.4 in)24 October 2010
Nov55.9 mm (2.2 in)23 November 1988
Dec76.2 mm (3.0 in)29 December 1996

Period of Record Coverage

1983 to 2026
Days with data per year at Black Bear 44 years of record at Black Bear, 1983 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1983, 1987, 1988, 2021, 2022, 2026. 1983: 90 of 365 days1984: 361 of 366 days1985: 349 of 365 days1986: 364 of 365 days1987: 306 of 365 days1988: 314 of 366 days1989: 362 of 365 days1990: 362 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 364 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 364 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 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: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 347 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 322 of 365 days2022: 217 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 363 of 365 days2026: 286 of 365 days1990200020102020
44 years of record at Black Bear, 1983 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1983, 1987, 1988, 2021, 2022, 2026.
Days with data per year at Black Bear
YearDays with dataShare of yearComplete
19839025%No
198436199%Yes
198534996%Yes
1986364100%Yes
198730684%No
198831486%No
198936299%Yes
199036299%Yes
1991365100%Yes
1992366100%Yes
1993364100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997364100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
201834795%Yes
2019365100%Yes
2020366100%Yes
202132288%No
202221759%No
2023365100%Yes
2024366100%Yes
202536399%Yes
202628678%No

Latest Records

20
Latest records at Black Bear
DateStationRecordValueBeat old record byOld record stoodSignificance
6 October 2026Black Bear, USdaily high max (Provisional)18.7 C (65.7 F)0.6 C (1.1 F)23 years10 of 100 (Routine)
5 October 2026Black Bear, USdaily high min (Provisional)7.3 C (45.1 F)2.1 C (3.8 F)29 years16 of 100 (Routine)
5 October 2026Black Bear, USdaily high max (Provisional)20.5 C (68.9 F)1.9 C (3.4 F)32 years15 of 100 (Routine)
4 October 2026Black Bear, USdaily high max (Provisional)19.2 C (66.6 F)0.3 C (0.5 F)1 year4 of 100 (Routine)
15 August 2026Black Bear, USdaily rain38.1 mm (1.5 in)5.1 mm (0.20 in)23 years17 of 100 (Routine)
27 July 2026Black Bear, USdaily high min (Tie)11.3 C (52.3 F)tie20 years2 of 100 (Routine)
26 July 2026Black Bear, USdaily high min12.0 C (53.6 F)0.2 C (0.4 F)16 years8 of 100 (Routine)
25 July 2026Black Bear, USdaily high min12.6 C (54.7 F)0.9 C (1.6 F)15 years10 of 100 (Routine)
20 July 2026Black Bear, USdaily high max28.9 C (84.0 F)0.7 C (1.3 F)19 years10 of 100 (Routine)
12 July 2026Black Bear, USdaily high min12.7 C (54.9 F)2.0 C (3.6 F)19 years15 of 100 (Routine)
29 June 2026Black Bear, USdaily rain43.2 mm (1.7 in)22.9 mm (0.9 in)8 years33 of 100 (Routine)
29 June 2026Black Bear, USdaily low max3.2 C (37.8 F)2.9 C (5.2 F)5 years10 of 100 (Routine)
28 June 2026Black Bear, USdaily rain25.4 mm (1.0 in)10.2 mm (0.4 in)43 years28 of 100 (Routine)
28 June 2026Black Bear, USdaily low max4.2 C (39.6 F)6.7 C (12.1 F)5 years16 of 100 (Routine)
27 June 2026Black Bear, USdaily rain22.9 mm (0.9 in)10.2 mm (0.4 in)12 years19 of 100 (Routine)
9 June 2026Black Bear, USdaily rain20.3 mm (0.8 in)2.5 mm (0.10 in)8 years8 of 100 (Routine)
22 April 2026Black Bear, USmonthly rain (Tie)40.6 mm (1.6 in)tie40 years6 of 100 (Routine)
17 April 2026Black Bear, USdaily low min-17.7 C (0.1 F)0.2 C (0.4 F)12 years7 of 100 (Routine)
15 April 2026Black Bear, USdaily rain25.4 mm (1.0 in)5.1 mm (0.20 in)35 years20 of 100 (Routine)
15 April 2026Black Bear, USdaily low max-0.3 C (31.5 F)0.3 C (0.5 F)12 years7 of 100 (Routine)

Climate Trend

37 complete years, 1984 to 2025
Annual mean temperature at Black Bear as warming stripes, 1984 to 2025 One stripe for each of 37 complete years at Black Bear, 1984 to 2025. Blue stripes are years cooler than the station's own mean of 1.1 C (34.0 F); red stripes are warmer. The coolest year was 1985, at -3.2 C (26.2 F), and the warmest was 2015, at 3.0 C (37.5 F). The strongest colour marks a difference of 4.4 C (7.9 F). 1984: -2.8 C, -3.9 C from the station mean1985: -3.2 C, -4.4 C from the station mean1986: -1.3 C, -2.4 C from the station mean1989: 1.6 C, +0.5 C from the station mean1990: 0.4 C, -0.7 C from the station mean1991: 0.7 C, -0.5 C from the station mean1992: 1.3 C, +0.2 C from the station mean1993: -0.2 C, -1.3 C from the station mean1994: 0.9 C, -0.2 C from the station mean1995: 0.9 C, -0.2 C from the station mean1996: 0.4 C, -0.7 C from the station mean1997: 0.3 C, -0.9 C from the station mean1998: 1.2 C, +0.1 C from the station mean1999: 1.1 C, -0.1 C from the station mean2000: 1.1 C, 0.0 C from the station mean2001: 1.6 C, +0.5 C from the station mean2002: 0.5 C, -0.6 C from the station mean2003: 1.9 C, +0.8 C from the station mean2004: 1.2 C, +0.1 C from the station mean2005: 1.4 C, +0.3 C from the station mean2006: 1.7 C, +0.6 C from the station mean2007: 2.3 C, +1.2 C from the station mean2008: 1.2 C, +0.1 C from the station mean2009: 1.6 C, +0.4 C from the station mean2010: 2.0 C, +0.9 C from the station mean2011: 1.1 C, 0.0 C from the station mean2012: 2.7 C, +1.6 C from the station mean2013: 1.7 C, +0.6 C from the station mean2014: 1.8 C, +0.7 C from the station mean2015: 3.0 C, +1.9 C from the station mean2016: 2.7 C, +1.5 C from the station mean2017: 2.1 C, +0.9 C from the station mean2019: 0.5 C, -0.6 C from the station mean2020: 1.4 C, +0.3 C from the station mean2023: 1.5 C, +0.4 C from the station mean2024: 2.4 C, +1.3 C from the station mean2025: 2.6 C, +1.5 C from the station mean198419901995200020052010201520202025
One stripe for each of 37 complete years at Black Bear, 1984 to 2025. Blue stripes are years cooler than the station's own mean of 1.1 C (34.0 F); red stripes are warmer. The coolest year was 1985, at -3.2 C (26.2 F), and the warmest was 2015, at 3.0 C (37.5 F). The strongest colour marks a difference of 4.4 C (7.9 F).
Annual mean temperature at Black Bear as warming stripes, 1984 to 2025
YearAnnual mean temperatureDifference from the station mean
1984-2.8 C-3.89 C
1985-3.2 C-4.36 C
1986-1.3 C-2.38 C
19891.6 C+0.49 C
19900.4 C-0.68 C
19910.7 C-0.47 C
19921.3 C+0.19 C
1993-0.2 C-1.35 C
19940.9 C-0.20 C
19950.9 C-0.18 C
19960.4 C-0.75 C
19970.3 C-0.86 C
19981.2 C+0.08 C
19991.1 C-0.06 C
20001.1 C-0.02 C
20011.6 C+0.47 C
20020.5 C-0.61 C
20031.9 C+0.79 C
20041.2 C+0.11 C
20051.4 C+0.28 C
20061.7 C+0.60 C
20072.3 C+1.21 C
20081.2 C+0.10 C
20091.6 C+0.43 C
20102.0 C+0.90 C
20111.1 C-0.04 C
20122.7 C+1.59 C
20131.7 C+0.61 C
20141.8 C+0.70 C
20153.0 C+1.92 C
20162.7 C+1.54 C
20172.1 C+0.93 C
20190.5 C-0.60 C
20201.4 C+0.31 C
20231.5 C+0.41 C
20242.4 C+1.25 C
20252.6 C+1.52 C

The annual mean temperature here has risen by 0.8 C (0.5 to 1.1) per decade over 1984 to 2025. In Fahrenheit: 1.5 F (1.0 to 2.0) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Black Bear
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.8 C (0.5 to 1.1) per decade1.5 F (1.0 to 2.0) per decade1984 to 202537Rise
Mean daily maximum0.8 C (0.6 to 1.0) per decade1.5 F (1.0 to 1.9) per decade1984 to 202537Rise
Mean daily minimum0.8 C (0.4 to 1.2) per decade1.4 F (0.8 to 2.1) per decade1984 to 202537Rise

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

1978 to 2026
Yearly extremes at Black Bear: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)32.7 C (90.9 F)198928.7 C (83.7 F)44
Coldest night (TNn)-47.2 C (-53.0 F)1985-29.0 C (-20.3 F)44
Wettest day (Rx1day)86.4 mm (3.4 in)199750.8 mm (2.0 in)49
Wettest five days (Rx5day)266.7 mm (10.5 in)1996106.7 mm (4.2 in)49
Longest dry spell (CDD)36 days199420 days49

Hottest day (TXx)

Hottest day (TXx) at Black Bear by year The hottest day of the year at Black Bear, 1978 to 2026. The record is 32.7 C (90.9 F) in 1989, marked on the chart; the median year is 28.7 C (83.7 F). 10152025303519801990200020102020Record: 32.7 C (90.9 F) in 1989
The hottest day of the year at Black Bear, 1978 to 2026. The record is 32.7 C (90.9 F) in 1989, marked on the chart; the median year is 28.7 C (83.7 F).
Hottest day (TXx) at Black Bear by year
YearHottest day (TXx)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
198313.6 C (56.5 F)
198425.6 C (78.1 F)
198526.3 C (79.3 F)
198624.4 C (75.9 F)
198724.9 C (76.8 F)
198829.8 C (85.6 F)
198932.7 C (90.9 F)
199028.7 C (83.7 F)
199126.9 C (80.4 F)
199227.4 C (81.3 F)
199325.0 C (77.0 F)
199428.7 C (83.7 F)
199528.2 C (82.8 F)
199627.2 C (81.0 F)
199727.3 C (81.1 F)
199828.5 C (83.3 F)
199928.0 C (82.4 F)
200031.4 C (88.5 F)
200130.0 C (86.0 F)
200232.7 C (90.9 F)
200331.1 C (88.0 F)
200427.5 C (81.5 F)
200528.7 C (83.7 F)
200629.4 C (84.9 F)
200730.8 C (87.4 F)
200827.8 C (82.0 F)
200929.1 C (84.4 F)
201029.1 C (84.4 F)
201127.8 C (82.0 F)
201228.4 C (83.1 F)
201329.1 C (84.4 F)
201427.2 C (81.0 F)
201530.1 C (86.2 F)
201628.3 C (82.9 F)
201729.2 C (84.6 F)
201830.2 C (86.4 F)
201928.5 C (83.3 F)
202028.9 C (84.0 F)
202130.8 C (87.4 F)
202229.8 C (85.6 F)
202329.9 C (85.8 F)
202429.7 C (85.5 F)
202528.0 C (82.4 F)
202631.0 C (87.8 F)

Coldest night (TNn)

Coldest night (TNn) at Black Bear by year The coldest night of the year at Black Bear, 1978 to 2026. The record is -47.2 C (-53.0 F) in 1985, marked on the chart; the median year is -29.0 C (-20.3 F). -50-40-30-2019801990200020102020Record: -47.2 C (-53.0 F) in 1985
The coldest night of the year at Black Bear, 1978 to 2026. The record is -47.2 C (-53.0 F) in 1985, marked on the chart; the median year is -29.0 C (-20.3 F).
Coldest night (TNn) at Black Bear by year
YearColdest night (TNn)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983-40.7 C (-41.3 F)
1984-46.6 C (-51.9 F)
1985-47.2 C (-53.0 F)
1986-32.7 C (-26.9 F)
1987-30.9 C (-23.6 F)
1988-30.7 C (-23.3 F)
1989-27.0 C (-16.6 F)
1990-36.4 C (-33.5 F)
1991-31.1 C (-24.0 F)
1992-26.7 C (-16.1 F)
1993-28.5 C (-19.3 F)
1994-24.6 C (-12.3 F)
1995-23.8 C (-10.8 F)
1996-30.6 C (-23.1 F)
1997-28.4 C (-19.1 F)
1998-36.5 C (-33.7 F)
1999-22.7 C (-8.9 F)
2000-23.6 C (-10.5 F)
2001-28.5 C (-19.3 F)
2002-27.1 C (-16.8 F)
2003-26.5 C (-15.7 F)
2004-28.7 C (-19.7 F)
2005-29.4 C (-20.9 F)
2006-29.8 C (-21.6 F)
2007-30.0 C (-22.0 F)
2008-30.5 C (-22.9 F)
2009-27.8 C (-18.0 F)
2010-25.9 C (-14.6 F)
2011-27.6 C (-17.7 F)
2012-23.8 C (-10.8 F)
2013-29.8 C (-21.6 F)
2014-32.3 C (-26.1 F)
2015-24.5 C (-12.1 F)
2016-30.7 C (-23.3 F)
2017-25.9 C (-14.6 F)
2018-30.0 C (-22.0 F)
2019-27.8 C (-18.0 F)
2020-25.1 C (-13.2 F)
2021-23.0 C (-9.4 F)
2022-34.3 C (-29.7 F)
2023-33.2 C (-27.8 F)
2024-31.6 C (-24.9 F)
2025-34.0 C (-29.2 F)
2026-26.4 C (-15.5 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Black Bear by year The wettest day of the year at Black Bear, 1978 to 2026. The record is 86.4 mm (3.4 in) in 1997, marked on the chart; the median year is 50.8 mm (2.0 in). 2040608010019801990200020102020Record: 86.4 mm (3.4 in) in 1997
The wettest day of the year at Black Bear, 1978 to 2026. The record is 86.4 mm (3.4 in) in 1997, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Black Bear by year
YearWettest day (Rx1day)
197845.7 mm (1.8 in)
197945.7 mm (1.8 in)
198040.6 mm (1.6 in)
198148.3 mm (1.9 in)
198255.9 mm (2.2 in)
198335.6 mm (1.4 in)
198438.1 mm (1.5 in)
198553.3 mm (2.1 in)
198673.7 mm (2.9 in)
198740.6 mm (1.6 in)
198855.9 mm (2.2 in)
198953.3 mm (2.1 in)
199040.6 mm (1.6 in)
199153.3 mm (2.1 in)
199245.7 mm (1.8 in)
199343.2 mm (1.7 in)
199450.8 mm (2.0 in)
199558.4 mm (2.3 in)
199676.2 mm (3.0 in)
199786.4 mm (3.4 in)
199855.9 mm (2.2 in)
199950.8 mm (2.0 in)
200048.3 mm (1.9 in)
200150.8 mm (2.0 in)
200240.6 mm (1.6 in)
200350.8 mm (2.0 in)
200453.3 mm (2.1 in)
200563.5 mm (2.5 in)
200640.6 mm (1.6 in)
200743.2 mm (1.7 in)
200843.2 mm (1.7 in)
200940.6 mm (1.6 in)
201061.0 mm (2.4 in)
201168.6 mm (2.7 in)
201268.6 mm (2.7 in)
201338.1 mm (1.5 in)
201445.7 mm (1.8 in)
201555.9 mm (2.2 in)
201658.4 mm (2.3 in)
201750.8 mm (2.0 in)
201858.4 mm (2.3 in)
201963.5 mm (2.5 in)
202033.0 mm (1.3 in)
202138.1 mm (1.5 in)
202253.3 mm (2.1 in)
202348.3 mm (1.9 in)
202443.2 mm (1.7 in)
202548.3 mm (1.9 in)
202643.2 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Black Bear by year The wettest five days of the year at Black Bear, 1978 to 2026. The record is 266.7 mm (10.5 in) in 1996, marked on the chart; the median year is 106.7 mm (4.2 in). 5010015020025030019801990200020102020Record: 266.7 mm (10.5 in) in 1996
The wettest five days of the year at Black Bear, 1978 to 2026. The record is 266.7 mm (10.5 in) in 1996, marked on the chart; the median year is 106.7 mm (4.2 in).
Wettest five days (Rx5day) at Black Bear by year
YearWettest five days (Rx5day)
197878.8 mm (3.1 in)
197981.3 mm (3.2 in)
1980116.8 mm (4.6 in)
1981129.6 mm (5.1 in)
1982129.6 mm (5.1 in)
1983101.6 mm (4.0 in)
198476.3 mm (3.0 in)
198581.2 mm (3.2 in)
1986155.0 mm (6.1 in)
198786.3 mm (3.4 in)
1988132.1 mm (5.2 in)
198983.8 mm (3.3 in)
1990111.8 mm (4.4 in)
1991147.3 mm (5.8 in)
199299.0 mm (3.9 in)
199399.0 mm (3.9 in)
1994139.8 mm (5.5 in)
1995134.6 mm (5.3 in)
1996266.7 mm (10.5 in)
1997236.3 mm (9.3 in)
1998116.9 mm (4.6 in)
1999142.3 mm (5.6 in)
2000114.3 mm (4.5 in)
200199.0 mm (3.9 in)
200283.7 mm (3.3 in)
200391.4 mm (3.6 in)
2004124.5 mm (4.9 in)
2005106.7 mm (4.2 in)
200696.5 mm (3.8 in)
2007104.1 mm (4.1 in)
200891.5 mm (3.6 in)
200986.4 mm (3.4 in)
2010121.9 mm (4.8 in)
201194.0 mm (3.7 in)
2012149.9 mm (5.9 in)
201399.0 mm (3.9 in)
2014109.2 mm (4.3 in)
2015104.2 mm (4.1 in)
201681.3 mm (3.2 in)
2017111.7 mm (4.4 in)
201896.5 mm (3.8 in)
2019208.3 mm (8.2 in)
202078.8 mm (3.1 in)
2021106.7 mm (4.2 in)
2022106.7 mm (4.2 in)
2023114.3 mm (4.5 in)
2024114.3 mm (4.5 in)
2025147.3 mm (5.8 in)
2026101.6 mm (4.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Black Bear by year The longest dry spell of the year at Black Bear, 1978 to 2026. The record is 36 days in 1994, marked on the chart; the median year is 20 days. 1020304019801990200020102020Record: 36 days in 1994
The longest dry spell of the year at Black Bear, 1978 to 2026. The record is 36 days in 1994, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Black Bear by year
YearLongest dry spell (CDD)
197815 days
197925 days
198017 days
198125 days
198213 days
198315 days
198417 days
198515 days
198619 days
198732 days
198827 days
198919 days
199033 days
199118 days
199221 days
199323 days
199436 days
199518 days
199628 days
199713 days
199831 days
199927 days
200027 days
200123 days
200222 days
200326 days
200417 days
200522 days
200622 days
200725 days
200824 days
200914 days
201020 days
201132 days
201225 days
201315 days
201415 days
201518 days
201628 days
201719 days
201825 days
201914 days
202018 days
202122 days
202219 days
202312 days
202418 days
202519 days
202620 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

37 years with a frost

Across 37 years with a frost, the median last spring frost at Black Bear falls on 25 June and the median first autumn frost on 9 August, which leaves a median of 55 days between them.

Fitted over all years, the growing season changes by +5.0 days per decade at this station.

Frost dates and growing season at Black Bear
MeasureMedian, all yearsEarliest periodRecent period (1993 to 2025)Recent against earliestFitted trend
Last spring frost25 Junen/a25 Junen/a-0.8 days per decade
First autumn frost9 Augustn/a16 Augustn/a+4.2 days per decade
Growing days55 daysn/a57 daysn/a+5.0 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

47 years, 1979 to 2025

A day with at least 49.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 87.1 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Black Bear: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years49.4 mm (1.9 in)
5 years59.5 mm (2.3 in)
10 years66.2 mm (2.6 in)
25 years74.7 mm (2.9 in)
50 years80.9 mm (3.2 in)Longer than the 47 years of record
100 years87.1 mm (3.4 in)Longer than the 47 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, 47 years of values from 1979 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: 86.4 mm (3.4 in) in 1997; 76.2 mm (3.0 in) in 1996; 73.7 mm (2.9 in) in 1986.

Download the Data

  • Data for Black Bear standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Black Bear threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-17).