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Built 2026-10-15 (15 October 2026)

Bull Spring Idaho Weather Records (USR0000IBUL)

Record envelope, standing records and threshold days for Bull Spring Idaho (USR0000IBUL), Idaho, United States, with 34 years of record.

Key Facts for Bull Spring Idaho

  • Bull Spring Idaho (USR0000IBUL) is a weather station in Idaho, United States at 42.08 latitude and -114.48 longitude, 1,737 m (5,700 ft) above sea level.
  • The station reports from 1990 to 2023, 34 years of record.
  • 1,464 records set at Bull Spring Idaho still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Bull Spring Idaho set a daily record high maximum temperature of 29.4 C (84.9 F) on 9 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Idaho, United States, 42.08 latitude, -114.48 longitude.
  • Elevation: 1,737 m (5,700 ft).
  • Period of record: 1990 to 2023, 34 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

43 days at or beyond a record
Daily record high and record low at Bull Spring Idaho, with 2026 drawn through them The band shows the record high and record low for each calendar day at Bull Spring Idaho. The lines show the 2026 daily maximum and minimum. 43 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Bull Spring Idaho. The lines show the 2026 daily maximum and minimum. 43 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Bull Spring Idaho, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.0 C (59.0 F)-31.7 C (-25.1 F)13.3 C (55.9 F)-16.1 C (3.0 F)
Feb20.0 C (68.0 F)-30.6 C (-23.1 F)16.7 C (62.1 F)-16.1 C (3.0 F)
Mar27.8 C (82.0 F)-23.9 C (-11.0 F)27.8 C (82.0 F)-13.3 C (8.1 F)
Apr28.9 C (84.0 F)-17.2 C (1.0 F)25.0 C (77.0 F)-12.2 C (10.0 F)
May33.9 C (93.0 F)-11.1 C (12.0 F)32.8 C (91.0 F)-6.1 C (21.0 F)
Jun37.2 C (99.0 F)-6.1 C (21.0 F)33.9 C (93.0 F)-3.3 C (26.1 F)
Jul40.6 C (105.1 F)-2.2 C (28.0 F)39.4 C (102.9 F)4.4 C (39.9 F)
Aug38.9 C (102.0 F)-6.7 C (19.9 F)38.9 C (102.0 F)0.0 C (32.0 F)
Sep38.3 C (100.9 F)-10.6 C (12.9 F)30.0 C (86.0 F)-4.4 C (24.1 F)
Oct33.9 C (93.0 F)-22.2 C (-8.0 F)32.2 C (90.0 F)-1.1 C (30.0 F)
Nov23.9 C (75.0 F)-27.2 C (-17.0 F)n/an/a
Dec17.2 C (63.0 F)-38.3 C (-36.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Bull Spring Idaho by the year they were set 1,464 records at Bull Spring Idaho still stand. 2013 holds the most, with 129. 0501001501990: 291991: 401992: 511993: 571994: 431995: 521996: 451997: 231998: 271999: 462000: 502001: 362002: 442003: 362004: 212005: 262006: 402007: 382008: 482009: 352010: 342011: 232012: 582013: 1292014: 332015: 412016: 322017: 272018: 262019: 242020: 332021: 372022: 352023: 372024: 302025: 372026: 411990199419982002200620102014201820222026
1,464 records at Bull Spring Idaho still stand. 2013 holds the most, with 129.
Standing records at Bull Spring Idaho by the year they were set
Year setStanding records
199029
199140
199251
199357
199443
199552
199645
199723
199827
199946
200050
200136
200244
200336
200421
200526
200640
200738
200848
200935
201034
201123
201258
2013129
201433
201541
201632
201727
201826
201924
202033
202137
202235
202337
202430
202537
202641

All-Time Record Progression

1 new records
When Bull Spring Idaho set new all-time records 1 all-time records were set at Bull Spring Idaho between 15 July 2022 and 15 July 2022. Each dot is a new record. Record high minimum temperature15 July 2022: Record high minimum temperature 20.6 C (69.1 F)
1 all-time records were set at Bull Spring Idaho between 15 July 2022 and 15 July 2022. Each dot is a new record.
When Bull Spring Idaho set new all-time records
DateKindDetail
2022-07-15Record high minimum temperatureRecord high minimum temperature 20.6 C (69.1 F)

Period of Record Coverage

1990 to 2026
Days with data per year at Bull Spring Idaho 37 years of record at Bull Spring Idaho, 1990 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1990, 1999, 2008, 2026. 1990: 196 of 365 days1991: 365 of 365 days1992: 365 of 366 days1993: 351 of 365 days1994: 363 of 365 days1995: 363 of 365 days1996: 345 of 366 days1997: 363 of 365 days1998: 365 of 365 days1999: 319 of 365 days2000: 366 of 366 days2001: 362 of 365 days2002: 364 of 365 days2003: 365 of 365 days2004: 364 of 366 days2005: 365 of 365 days2006: 363 of 365 days2007: 345 of 365 days2008: 290 of 366 days2009: 337 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 365 of 366 days2013: 365 of 365 days2014: 355 of 365 days2015: 365 of 365 days2016: 364 of 366 days2017: 363 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 284 of 365 days19901995200020052010201520202025
37 years of record at Bull Spring Idaho, 1990 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1990, 1999, 2008, 2026.
Days with data per year at Bull Spring Idaho
YearDays with dataShare of yearComplete
199019654%No
1991365100%Yes
1992365100%Yes
199335196%Yes
199436399%Yes
199536399%Yes
199634594%Yes
199736399%Yes
1998365100%Yes
199931987%No
2000366100%Yes
200136299%Yes
2002364100%Yes
2003365100%Yes
200436499%Yes
2005365100%Yes
200636399%Yes
200734595%Yes
200829079%No
200933792%Yes
2010365100%Yes
2011365100%Yes
2012365100%Yes
2013365100%Yes
201435597%Yes
2015365100%Yes
201636499%Yes
201736399%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Bull Spring Idaho
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Bull Spring Idaho, USdaily high max (Provisional)29.4 C (84.9 F)0.5 C (0.9 F)29 years11 of 100 (Routine)
8 October 2026Bull Spring Idaho, USdaily high max (Tie, Provisional)27.8 C (82.0 F)tie3 years0 of 100 (Routine)
7 October 2026Bull Spring Idaho, USdaily high max (Provisional)29.4 C (84.9 F)1.1 C (2.0 F)5 years5 of 100 (Routine)
6 October 2026Bull Spring Idaho, USdaily high max (Provisional)28.3 C (82.9 F)0.5 C (0.9 F)35 years13 of 100 (Routine)
5 October 2026Bull Spring Idaho, USdaily high max (Provisional)31.7 C (89.1 F)5.0 C (9.0 F)23 years16 of 100 (Routine)
4 October 2026Bull Spring Idaho, USdaily high max (Provisional)32.2 C (90.0 F)2.8 C (5.0 F)32 years16 of 100 (Routine)
3 October 2026Bull Spring Idaho, USdaily high max (Provisional)30.0 C (86.0 F)2.2 C (4.0 F)32 years15 of 100 (Routine)
15 September 2026Bull Spring Idaho, USdaily low min (Provisional)-4.4 C (24.1 F)0.5 C (0.9 F)21 years10 of 100 (Routine)
22 August 2026Bull Spring Idaho, USdaily high min (Provisional)16.1 C (61.0 F)1.1 C (2.0 F)12 years8 of 100 (Routine)
21 August 2026Bull Spring Idaho, USdaily high max (Provisional)37.2 C (99.0 F)0.5 C (0.9 F)16 years9 of 100 (Routine)
20 August 2026Bull Spring Idaho, USdaily high max (Provisional)37.8 C (100.0 F)1.7 C (3.1 F)16 years12 of 100 (Routine)
13 August 2026Bull Spring Idaho, USdaily low max21.1 C (70.0 F)2.2 C (4.0 F)31 years17 of 100 (Routine)
12 August 2026Bull Spring Idaho, USdaily high min19.4 C (66.9 F)2.7 C (4.9 F)11 years12 of 100 (Routine)
7 August 2026Bull Spring Idaho, USdaily high max37.8 C (100.0 F)1.1 C (2.0 F)36 years15 of 100 (Routine)
5 August 2026Bull Spring Idaho, USdaily low min2.8 C (37.0 F)1.6 C (2.9 F)24 years14 of 100 (Routine)
4 August 2026Bull Spring Idaho, USdaily low min0.6 C (33.1 F)1.1 C (2.0 F)9 years7 of 100 (Routine)
1 August 2026Bull Spring Idaho, USmonthly high max (Tie)38.9 C (102.0 F)tie24 years5 of 100 (Routine)
31 July 2026Bull Spring Idaho, USdaily high max39.4 C (102.9 F)1.1 C (2.0 F)25 years12 of 100 (Routine)
25 July 2026Bull Spring Idaho, USdaily high min17.2 C (63.0 F)1.6 C (2.9 F)16 years12 of 100 (Routine)
24 July 2026Bull Spring Idaho, USdaily high max37.8 C (100.0 F)2.8 C (5.0 F)24 years17 of 100 (Routine)

Climate Trend

30 complete years, 1991 to 2025
Annual mean temperature at Bull Spring Idaho as warming stripes, 1991 to 2025 One stripe for each of 30 complete years at Bull Spring Idaho, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 7.0 C (44.6 F); red stripes are warmer. The coolest year was 1993, at 5.0 C (41.0 F), and the warmest was 2013, at 9.9 C (49.9 F). The strongest colour marks a difference of 3.0 C (5.4 F). 1991: 6.6 C, -0.5 C from the station mean1992: 7.3 C, +0.2 C from the station mean1993: 5.0 C, -2.0 C from the station mean1994: 7.0 C, 0.0 C from the station mean1995: 7.0 C, 0.0 C from the station mean1997: 6.7 C, -0.3 C from the station mean1998: 6.9 C, -0.1 C from the station mean2000: 7.0 C, 0.0 C from the station mean2001: 7.1 C, +0.1 C from the station mean2002: 6.2 C, -0.8 C from the station mean2003: 7.6 C, +0.6 C from the station mean2004: 6.6 C, -0.4 C from the station mean2005: 6.6 C, -0.4 C from the station mean2006: 6.5 C, -0.5 C from the station mean2010: 6.8 C, -0.2 C from the station mean2011: 6.3 C, -0.7 C from the station mean2012: 8.7 C, +1.7 C from the station mean2013: 9.9 C, +2.9 C from the station mean2014: 7.8 C, +0.7 C from the station mean2015: 7.9 C, +0.9 C from the station mean2016: 7.2 C, +0.2 C from the station mean2017: 6.8 C, -0.2 C from the station mean2018: 6.7 C, -0.3 C from the station mean2019: 5.8 C, -1.2 C from the station mean2020: 6.9 C, -0.1 C from the station mean2021: 7.4 C, +0.4 C from the station mean2022: 6.3 C, -0.7 C from the station mean2023: 6.2 C, -0.8 C from the station mean2024: 7.5 C, +0.5 C from the station mean2025: 8.0 C, +1.0 C from the station mean19911995200020052010201520202025
One stripe for each of 30 complete years at Bull Spring Idaho, 1991 to 2025. Blue stripes are years cooler than the station's own mean of 7.0 C (44.6 F); red stripes are warmer. The coolest year was 1993, at 5.0 C (41.0 F), and the warmest was 2013, at 9.9 C (49.9 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Bull Spring Idaho as warming stripes, 1991 to 2025
YearAnnual mean temperatureDifference from the station mean
19916.6 C-0.45 C
19927.3 C+0.25 C
19935.0 C-2.00 C
19947.0 C-0.01 C
19957.0 C-0.04 C
19976.7 C-0.32 C
19986.9 C-0.09 C
20007.0 C+0.01 C
20017.1 C+0.08 C
20026.2 C-0.80 C
20037.6 C+0.58 C
20046.6 C-0.42 C
20056.6 C-0.38 C
20066.5 C-0.49 C
20106.8 C-0.23 C
20116.3 C-0.70 C
20128.7 C+1.72 C
20139.9 C+2.94 C
20147.8 C+0.75 C
20157.9 C+0.87 C
20167.2 C+0.18 C
20176.8 C-0.22 C
20186.7 C-0.34 C
20195.8 C-1.16 C
20206.9 C-0.06 C
20217.4 C+0.41 C
20226.3 C-0.71 C
20236.2 C-0.83 C
20247.5 C+0.50 C
20258.0 C+0.97 C

The fitted trend in annual mean temperature here over 1991 to 2025 is 0.2 C (-0.1 to 0.5) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.3 F (-0.2 to 0.9) 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 Bull Spring Idaho
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (-0.1 to 0.5) per decade0.3 F (-0.2 to 0.9) per decade1991 to 202530Not clearly different from zero
Mean daily maximum0.35 C (0.02 to 0.67) per decade0.62 F (0.04 to 1.20) per decade1991 to 202530Rise
Mean daily minimum0.04 C (-0.33 to 0.40) per decade0.1 F (-0.6 to 0.7) per decade1991 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

1990 to 2026
Yearly extremes at Bull Spring Idaho: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)200237.2 C (99.0 F)37
Coldest night (TNn)-38.3 C (-36.9 F)1990-26.1 C (-15.0 F)37

Hottest day (TXx)

Hottest day (TXx) at Bull Spring Idaho by year The hottest day of the year at Bull Spring Idaho, 1990 to 2026. The record is 40.6 C (105.1 F) in 2002, marked on the chart; the median year is 37.2 C (99.0 F). 3032.53537.54042.51990200020102020Record: 40.6 C (105.1 F) in 2002
The hottest day of the year at Bull Spring Idaho, 1990 to 2026. The record is 40.6 C (105.1 F) in 2002, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Bull Spring Idaho by year
YearHottest day (TXx)
199037.2 C (99.0 F)
199135.6 C (96.1 F)
199236.1 C (97.0 F)
199331.7 C (89.1 F)
199437.2 C (99.0 F)
199534.4 C (93.9 F)
199636.7 C (98.1 F)
199734.4 C (93.9 F)
199838.3 C (100.9 F)
199935.6 C (96.1 F)
200038.3 C (100.9 F)
200140.0 C (104.0 F)
200240.6 C (105.1 F)
200339.4 C (102.9 F)
200434.4 C (93.9 F)
200536.7 C (98.1 F)
200637.8 C (100.0 F)
200738.9 C (102.0 F)
200837.2 C (99.0 F)
200936.7 C (98.1 F)
201036.1 C (97.0 F)
201135.6 C (96.1 F)
201237.2 C (99.0 F)
201338.3 C (100.9 F)
201436.1 C (97.0 F)
201536.7 C (98.1 F)
201636.1 C (97.0 F)
201736.1 C (97.0 F)
201837.2 C (99.0 F)
201936.1 C (97.0 F)
202037.8 C (100.0 F)
202138.3 C (100.9 F)
202238.3 C (100.9 F)
202337.2 C (99.0 F)
202438.3 C (100.9 F)
202536.1 C (97.0 F)
202639.4 C (102.9 F)

Coldest night (TNn)

Coldest night (TNn) at Bull Spring Idaho by year The coldest night of the year at Bull Spring Idaho, 1990 to 2026. The record is -38.3 C (-36.9 F) in 1990, marked on the chart; the median year is -26.1 C (-15.0 F). -40-30-20-101990200020102020Record: -38.3 C (-36.9 F) in 1990
The coldest night of the year at Bull Spring Idaho, 1990 to 2026. The record is -38.3 C (-36.9 F) in 1990, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Bull Spring Idaho by year
YearColdest night (TNn)
1990-38.3 C (-36.9 F)
1991-21.7 C (-7.1 F)
1992-27.2 C (-17.0 F)
1993-27.2 C (-17.0 F)
1994-28.3 C (-18.9 F)
1995-22.2 C (-8.0 F)
1996-30.6 C (-23.1 F)
1997-24.4 C (-11.9 F)
1998-26.1 C (-15.0 F)
1999-23.9 C (-11.0 F)
2000-24.4 C (-11.9 F)
2001-23.3 C (-9.9 F)
2002-29.4 C (-20.9 F)
2003-26.1 C (-15.0 F)
2004-23.9 C (-11.0 F)
2005-27.2 C (-17.0 F)
2006-26.1 C (-15.0 F)
2007-27.8 C (-18.0 F)
2008-25.6 C (-14.1 F)
2009-27.8 C (-18.0 F)
2010-27.2 C (-17.0 F)
2011-27.2 C (-17.0 F)
2012-22.2 C (-8.0 F)
2013-26.7 C (-16.1 F)
2014-28.3 C (-18.9 F)
2015-28.3 C (-18.9 F)
2016-31.7 C (-25.1 F)
2017-31.7 C (-25.1 F)
2018-23.9 C (-11.0 F)
2019-23.3 C (-9.9 F)
2020-20.0 C (-4.0 F)
2021-21.7 C (-7.1 F)
2022-26.1 C (-15.0 F)
2023-28.9 C (-20.0 F)
2024-25.0 C (-13.0 F)
2025-23.3 C (-9.9 F)
2026-16.1 C (3.0 F)

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 Bull Spring Idaho falls on 20 June and the median first autumn frost on 30 August, which leaves a median of 72 days between them.

Fitted over all years, the growing season changes by +1.3 days per decade at this station.

Frost dates and growing season at Bull Spring Idaho
MeasureMedian, all yearsEarliest periodRecent period (1991 to 2025)Recent against earliestFitted trend
Last spring frost20 Junen/a20 Junen/a-0.2 days per decade
First autumn frost30 Augustn/a30 Augustn/a+1.0 days per decade
Growing days72 daysn/a72 daysn/a+1.3 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.

Download the Data

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