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Rexburg Byu Idaho Weather Records (USC00107644)

Record envelope, standing records and threshold days for Rexburg Byu Idaho (USC00107644), Idaho, United States, with 50 years of record.

Key Facts for Rexburg Byu Idaho

  • Rexburg Byu Idaho (USC00107644) is a weather station in Idaho, United States at 43.81 latitude and -111.79 longitude, 1,526 m (5,005 ft) above sea level.
  • The station reports from 1977 to 2026, 50 years of record.
  • 1,464 records set at Rexburg Byu Idaho still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Rexburg Byu Idaho tied a daily record high minimum temperature of 12.8 C (55.0 F) on 29 September 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, 43.81 latitude, -111.79 longitude.
  • Elevation: 1,526 m (5,005 ft).
  • Period of record: 1977 to 2026, 50 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

29 days at or beyond a record
Daily record high and record low at Rexburg Byu Idaho, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rexburg Byu Idaho. The lines show the 2026 daily maximum and minimum. 29 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 Rexburg Byu Idaho. The lines show the 2026 daily maximum and minimum. 29 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rexburg Byu Idaho, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.1 C (52.0 F)-35.6 C (-32.1 F)6.1 C (43.0 F)-15.6 C (3.9 F)
Feb15.6 C (60.1 F)-37.8 C (-36.0 F)12.8 C (55.0 F)-18.9 C (-2.0 F)
Mar25.0 C (77.0 F)-24.4 C (-11.9 F)25.0 C (77.0 F)-9.4 C (15.1 F)
Apr28.9 C (84.0 F)-12.2 C (10.0 F)23.3 C (73.9 F)-6.1 C (21.0 F)
May32.8 C (91.0 F)-8.9 C (16.0 F)30.0 C (86.0 F)-2.8 C (27.0 F)
Jun38.9 C (102.0 F)-1.7 C (28.9 F)32.2 C (90.0 F)0.6 C (33.1 F)
Jul38.9 C (102.0 F)0.0 C (32.0 F)37.8 C (100.0 F)6.7 C (44.1 F)
Aug37.2 C (99.0 F)-2.8 C (27.0 F)36.1 C (97.0 F)6.7 C (44.1 F)
Sep35.6 C (96.1 F)-10.0 C (14.0 F)21.1 C (70.0 F)2.8 C (37.0 F)
Oct30.6 C (87.1 F)-19.4 C (-2.9 F)n/an/a
Nov21.7 C (71.1 F)-25.0 C (-13.0 F)n/an/a
Dec16.1 C (61.0 F)-35.0 C (-31.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rexburg Byu Idaho by the year they were set 1,464 records at Rexburg Byu Idaho still stand. 1990 holds the most, with 57. 02040601977: 121978: 341979: 381980: 331981: 301982: 391983: 451984: 251985: 421986: 311987: 381988: 331989: 251990: 571991: 281992: 421993: 341994: 281995: 301996: 361997: 211998: 211999: 252000: 192001: 302002: 172003: 312004: 222005: 162006: 262007: 372008: 232009: 272010: 162011: 182012: 252013: 362014: 312015: 352016: 212017: 252018: 272019: 212020: 262021: 352022: 282023: 202024: 192025: 392026: 471977198219871992199720022007201220172022
1,464 records at Rexburg Byu Idaho still stand. 1990 holds the most, with 57.
Standing records at Rexburg Byu Idaho by the year they were set
Year setStanding records
197712
197834
197938
198033
198130
198239
198345
198425
198542
198631
198738
198833
198925
199057
199128
199242
199334
199428
199530
199636
199721
199821
199925
200019
200130
200217
200331
200422
200516
200626
200737
200823
200927
201016
201118
201225
201336
201431
201535
201621
201725
201827
201921
202026
202135
202228
202320
202419
202539
202647

All-Time Record Progression

1 new records
When Rexburg Byu Idaho set new all-time records 1 all-time records were set at Rexburg Byu Idaho between 4 August 2026 and 4 August 2026. Each dot is a new record. Record high minimum temperature4 August 2026: Record high minimum temperature 20.0 C (68.0 F)
1 all-time records were set at Rexburg Byu Idaho between 4 August 2026 and 4 August 2026. Each dot is a new record.
When Rexburg Byu Idaho set new all-time records
DateKindDetail
2026-08-04Record high minimum temperatureRecord high minimum temperature 20.0 C (68.0 F)

Wettest Day of Each Month

Jul: 45.0 mm (1.8 in)
Record daily precipitation for each month at Rexburg Byu Idaho The wettest day on record for each calendar month at Rexburg Byu Idaho. The most was 45.0 mm (1.8 in) on 23 July 1979. 0204060 Jan: 22.9 mm (0.9 in), 22 January 1984 Jan Feb: 17.8 mm (0.7 in), 11 February 1978 Feb Mar: 35.8 mm (1.4 in), 12 March 1995 Mar Apr: 22.9 mm (0.9 in), 24 April 2006 Apr May: 33.3 mm (1.3 in), 24 May 2023 May Jun: 36.3 mm (1.4 in), 10 June 2004 Jun Jul: 45.0 mm (1.8 in), 23 July 1979 Jul Aug: 22.9 mm (0.9 in), 26 August 1977 Aug Sep: 37.3 mm (1.5 in), 26 September 2014 Sep Oct: 24.9 mm (1.0 in), 31 October 1998 Oct Nov: 35.6 mm (1.4 in), 8 November 1998 Nov Dec: 29.7 mm (1.2 in), 4 December 2025 Dec
The wettest day on record for each calendar month at Rexburg Byu Idaho. The most was 45.0 mm (1.8 in) on 23 July 1979.
Record daily precipitation for each month at Rexburg Byu Idaho
MonthRecord daily precipitation (mm)Date
Jan22.9 mm (0.9 in)22 January 1984
Feb17.8 mm (0.7 in)11 February 1978
Mar35.8 mm (1.4 in)12 March 1995
Apr22.9 mm (0.9 in)24 April 2006
May33.3 mm (1.3 in)24 May 2023
Jun36.3 mm (1.4 in)10 June 2004
Jul45.0 mm (1.8 in)23 July 1979
Aug22.9 mm (0.9 in)26 August 1977
Sep37.3 mm (1.5 in)26 September 2014
Oct24.9 mm (1.0 in)31 October 1998
Nov35.6 mm (1.4 in)8 November 1998
Dec29.7 mm (1.2 in)4 December 2025

Period of Record Coverage

1977 to 2026
Days with data per year at Rexburg Byu Idaho 50 years of record at Rexburg Byu Idaho, 1977 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1977, 1985, 1994, 1997, 1998, 1999, 2001, 2002 and others. 1977: 181 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 361 of 366 days1981: 358 of 365 days1982: 361 of 365 days1983: 362 of 365 days1984: 330 of 366 days1985: 327 of 365 days1986: 361 of 365 days1987: 365 of 365 days1988: 358 of 366 days1989: 361 of 365 days1990: 362 of 365 days1991: 364 of 365 days1992: 364 of 366 days1993: 336 of 365 days1994: 328 of 365 days1995: 333 of 365 days1996: 330 of 366 days1997: 180 of 365 days1998: 316 of 365 days1999: 268 of 365 days2000: 364 of 366 days2001: 241 of 365 days2002: 113 of 365 days2003: 301 of 365 days2004: 358 of 366 days2005: 364 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 234 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 352 of 365 days2012: 361 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 364 of 365 days2016: 340 of 366 days2017: 339 of 365 days2018: 342 of 365 days2019: 269 of 365 days2020: 365 of 366 days2021: 357 of 365 days2022: 365 of 365 days2023: 321 of 365 days2024: 327 of 366 days2025: 320 of 365 days2026: 238 of 365 days19801990200020102020
50 years of record at Rexburg Byu Idaho, 1977 to 2026. 15 years have data for under 90 percent of days and are left out of rankings: 1977, 1985, 1994, 1997, 1998, 1999, 2001, 2002 and others.
Days with data per year at Rexburg Byu Idaho
YearDays with dataShare of yearComplete
197718150%No
1978365100%Yes
1979365100%Yes
198036199%Yes
198135898%Yes
198236199%Yes
198336299%Yes
198433090%Yes
198532790%No
198636199%Yes
1987365100%Yes
198835898%Yes
198936199%Yes
199036299%Yes
1991364100%Yes
199236499%Yes
199333692%Yes
199432890%No
199533391%Yes
199633090%Yes
199718049%No
199831687%No
199926873%No
200036499%Yes
200124166%No
200211331%No
200330182%No
200435898%Yes
2005364100%Yes
2006365100%Yes
2007365100%Yes
200823464%No
200936399%Yes
2010365100%Yes
201135296%Yes
201236199%Yes
2013364100%Yes
2014365100%Yes
2015364100%Yes
201634093%Yes
201733993%Yes
201834294%Yes
201926974%No
2020365100%Yes
202135798%Yes
2022365100%Yes
202332188%No
202432789%No
202532088%No
202623865%No

Latest Records

20
Latest records at Rexburg Byu Idaho
DateStationRecordValueBeat old record byOld record stoodSignificance
29 September 2026Rexburg Byu Idaho, USdaily high min (Tie, Provisional)12.8 C (55.0 F)tie4 years1 of 100 (Routine)
28 September 2026Rexburg Byu Idaho, USdaily high min (Provisional)13.3 C (55.9 F)2.7 C (4.9 F)35 years21 of 100 (Routine)
28 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)16.7 C (62.1 F)2.8 C (5.0 F)0 years13 of 100 (Routine)
27 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)15.0 C (59.0 F)0.6 C (1.1 F)0 years6 of 100 (Routine)
26 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)22.8 C (73.0 F)6.1 C (11.0 F)0 years24 of 100 (Routine)
24 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)18.9 C (66.0 F)1.7 C (3.1 F)11 years13 of 100 (Routine)
23 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)22.2 C (72.0 F)6.6 C (11.9 F)16 years30 of 100 (Routine)
23 August 2026Rexburg Byu Idaho, USdaily rain (Provisional)10.2 mm (0.4 in)5.4 mm (0.21 in)40 years20 of 100 (Routine)
22 August 2026Rexburg Byu Idaho, USall-time high min (Provisional)26.7 C (80.1 F)0.6 C (1.1 F)0 years26 of 100 (Routine)
21 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)23.3 C (73.9 F)8.3 C (14.9 F)3 years31 of 100 (Routine)
21 August 2026Rexburg Byu Idaho, USdaily high max (Provisional)36.1 C (97.0 F)2.8 C (5.0 F)7 years14 of 100 (Routine)
20 August 2026Rexburg Byu Idaho, USall-time high min (Provisional)26.1 C (79.0 F)4.4 C (7.9 F)0 years38 of 100 (Notable)
20 August 2026Rexburg Byu Idaho, USdaily high max (Provisional)35.6 C (96.1 F)0.6 C (1.1 F)0 years6 of 100 (Routine)
19 August 2026Rexburg Byu Idaho, USall-time high min (Provisional)21.7 C (71.1 F)1.7 C (3.1 F)0 years30 of 100 (Routine)
18 August 2026Rexburg Byu Idaho, USdaily high min (Provisional)17.8 C (64.0 F)0.6 C (1.1 F)3 years6 of 100 (Routine)
14 August 2026Rexburg Byu Idaho, USdaily rain14.0 mm (0.6 in)1.3 mm (0.05 in)47 years20 of 100 (Routine)
13 August 2026Rexburg Byu Idaho, USdaily low max (Tie)22.2 C (72.0 F)tie16 years2 of 100 (Routine)
4 August 2026Rexburg Byu Idaho, USall-time high min20.0 C (68.0 F)0.6 C (1.1 F)45 years39 of 100 (Notable)
3 August 2026Rexburg Byu Idaho, USdaily high min17.8 C (64.0 F)1.1 C (2.0 F)33 years18 of 100 (Routine)
2 August 2026Rexburg Byu Idaho, USdaily high min17.8 C (64.0 F)1.1 C (2.0 F)4 years9 of 100 (Routine)

Climate Trend

27 complete years, 1978 to 2022
Annual mean temperature at Rexburg Byu Idaho as warming stripes, 1978 to 2022 One stripe for each of 27 complete years at Rexburg Byu Idaho, 1978 to 2022. Blue stripes are years cooler than the station's own mean of 6.7 C (44.1 F); red stripes are warmer. The coolest year was 1982, at 5.3 C (41.5 F), and the warmest was 2021, at 8.1 C (46.6 F). The strongest colour marks a difference of 1.5 C (2.7 F). 1978: 5.9 C, -0.8 C from the station mean1979: 5.9 C, -0.8 C from the station mean1980: 6.8 C, +0.1 C from the station mean1981: 7.7 C, +1.0 C from the station mean1982: 5.3 C, -1.4 C from the station mean1983: 6.4 C, -0.3 C from the station mean1986: 7.0 C, +0.3 C from the station mean1987: 7.0 C, +0.3 C from the station mean1988: 6.6 C, -0.1 C from the station mean1989: 5.5 C, -1.2 C from the station mean1990: 6.6 C, -0.1 C from the station mean1991: 6.5 C, -0.2 C from the station mean1992: 7.2 C, +0.5 C from the station mean2000: 7.0 C, +0.3 C from the station mean2004: 6.0 C, -0.7 C from the station mean2005: 6.0 C, -0.7 C from the station mean2006: 6.8 C, +0.1 C from the station mean2007: 7.6 C, +0.9 C from the station mean2009: 5.9 C, -0.8 C from the station mean2010: 6.1 C, -0.6 C from the station mean2012: 8.0 C, +1.3 C from the station mean2013: 6.2 C, -0.5 C from the station mean2014: 7.2 C, +0.5 C from the station mean2015: 7.7 C, +1.0 C from the station mean2020: 7.2 C, +0.5 C from the station mean2021: 8.1 C, +1.4 C from the station mean2022: 6.7 C, 0.0 C from the station mean197819851990199520002005201020152020
One stripe for each of 27 complete years at Rexburg Byu Idaho, 1978 to 2022. Blue stripes are years cooler than the station's own mean of 6.7 C (44.1 F); red stripes are warmer. The coolest year was 1982, at 5.3 C (41.5 F), and the warmest was 2021, at 8.1 C (46.6 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Rexburg Byu Idaho as warming stripes, 1978 to 2022
YearAnnual mean temperatureDifference from the station mean
19785.9 C-0.77 C
19795.9 C-0.76 C
19806.8 C+0.11 C
19817.7 C+0.98 C
19825.3 C-1.42 C
19836.4 C-0.26 C
19867.0 C+0.28 C
19877.0 C+0.30 C
19886.6 C-0.11 C
19895.5 C-1.18 C
19906.6 C-0.07 C
19916.5 C-0.17 C
19927.2 C+0.47 C
20007.0 C+0.28 C
20046.0 C-0.74 C
20056.0 C-0.66 C
20066.8 C+0.13 C
20077.6 C+0.88 C
20095.9 C-0.82 C
20106.1 C-0.58 C
20128.0 C+1.33 C
20136.2 C-0.52 C
20147.2 C+0.47 C
20157.7 C+1.05 C
20207.2 C+0.46 C
20218.1 C+1.43 C
20226.7 C+0.01 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1977 to 2026
Yearly extremes at Rexburg Byu Idaho: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)198835.3 C (95.5 F)50
Coldest night (TNn)-37.8 C (-36.0 F)1985-26.7 C (-16.1 F)50
Wettest day (Rx1day)45.0 mm (1.8 in)197922.1 mm (0.9 in)50
Wettest five days (Rx5day)70.1 mm (2.8 in)199335.5 mm (1.4 in)50
Longest dry spell (CDD)65 days200034 days50

Hottest day (TXx)

Hottest day (TXx) at Rexburg Byu Idaho by year The hottest day of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 38.9 C (102.0 F) in 1988, marked on the chart; the median year is 35.3 C (95.5 F). 202530354019801990200020102020Record: 38.9 C (102.0 F) in 1988
The hottest day of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 38.9 C (102.0 F) in 1988, marked on the chart; the median year is 35.3 C (95.5 F).
Hottest day (TXx) at Rexburg Byu Idaho by year
YearHottest day (TXx)
197735.0 C (95.0 F)
197836.1 C (97.0 F)
197936.1 C (97.0 F)
198034.4 C (93.9 F)
198135.6 C (96.1 F)
198235.0 C (95.0 F)
198336.1 C (97.0 F)
198433.3 C (91.9 F)
198535.0 C (95.0 F)
198635.0 C (95.0 F)
198733.9 C (93.0 F)
198838.9 C (102.0 F)
198937.2 C (99.0 F)
199037.2 C (99.0 F)
199135.0 C (95.0 F)
199236.1 C (97.0 F)
199331.1 C (88.0 F)
199436.7 C (98.1 F)
199532.8 C (91.0 F)
199636.7 C (98.1 F)
199735.0 C (95.0 F)
199835.0 C (95.0 F)
199932.8 C (91.0 F)
200037.2 C (99.0 F)
200136.1 C (97.0 F)
200221.7 C (71.1 F)
200335.6 C (96.1 F)
200432.8 C (91.0 F)
200535.0 C (95.0 F)
200636.1 C (97.0 F)
200738.9 C (102.0 F)
200835.0 C (95.0 F)
200933.9 C (93.0 F)
201033.3 C (91.9 F)
201133.3 C (91.9 F)
201235.6 C (96.1 F)
201335.6 C (96.1 F)
201432.8 C (91.0 F)
201535.6 C (96.1 F)
201633.9 C (93.0 F)
201735.6 C (96.1 F)
201836.1 C (97.0 F)
201935.0 C (95.0 F)
202036.1 C (97.0 F)
202135.6 C (96.1 F)
202235.6 C (96.1 F)
202335.6 C (96.1 F)
202435.0 C (95.0 F)
202535.0 C (95.0 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Rexburg Byu Idaho by year The coldest night of the year at Rexburg Byu Idaho, 1977 to 2026. The record is -37.8 C (-36.0 F) in 1985, marked on the chart; the median year is -26.7 C (-16.1 F). -40-30-20-1019801990200020102020Record: -37.8 C (-36.0 F) in 1985
The coldest night of the year at Rexburg Byu Idaho, 1977 to 2026. The record is -37.8 C (-36.0 F) in 1985, marked on the chart; the median year is -26.7 C (-16.1 F).
Coldest night (TNn) at Rexburg Byu Idaho by year
YearColdest night (TNn)
1977-21.7 C (-7.1 F)
1978-29.4 C (-20.9 F)
1979-35.0 C (-31.0 F)
1980-28.3 C (-18.9 F)
1981-27.2 C (-17.0 F)
1982-33.3 C (-27.9 F)
1983-35.0 C (-31.0 F)
1984-35.6 C (-32.1 F)
1985-37.8 C (-36.0 F)
1986-20.0 C (-4.0 F)
1987-23.9 C (-11.0 F)
1988-27.2 C (-17.0 F)
1989-32.8 C (-27.0 F)
1990-35.0 C (-31.0 F)
1991-27.8 C (-18.0 F)
1992-27.8 C (-18.0 F)
1993-28.9 C (-20.0 F)
1994-23.9 C (-11.0 F)
1995-23.9 C (-11.0 F)
1996-28.9 C (-20.0 F)
1997-20.6 C (-5.1 F)
1998-28.9 C (-20.0 F)
1999-19.4 C (-2.9 F)
2000-23.9 C (-11.0 F)
2001-33.3 C (-27.9 F)
2002-26.7 C (-16.1 F)
2003-18.3 C (-0.9 F)
2004-30.6 C (-23.1 F)
2005-25.6 C (-14.1 F)
2006-22.2 C (-8.0 F)
2007-26.1 C (-15.0 F)
2008-28.3 C (-18.9 F)
2009-25.0 C (-13.0 F)
2010-25.0 C (-13.0 F)
2011-27.2 C (-17.0 F)
2012-18.9 C (-2.0 F)
2013-28.9 C (-20.0 F)
2014-26.7 C (-16.1 F)
2015-26.7 C (-16.1 F)
2016-27.2 C (-17.0 F)
2017-27.8 C (-18.0 F)
2018-20.6 C (-5.1 F)
2019-21.7 C (-7.1 F)
2020-22.2 C (-8.0 F)
2021-18.9 C (-2.0 F)
2022-25.6 C (-14.1 F)
2023-31.1 C (-24.0 F)
2024-16.7 C (1.9 F)
2025-25.0 C (-13.0 F)
2026-18.9 C (-2.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rexburg Byu Idaho by year The wettest day of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 45.0 mm (1.8 in) in 1979, marked on the chart; the median year is 22.1 mm (0.9 in). 0102030405019801990200020102020Record: 45.0 mm (1.8 in) in 1979
The wettest day of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 45.0 mm (1.8 in) in 1979, marked on the chart; the median year is 22.1 mm (0.9 in).
Wettest day (Rx1day) at Rexburg Byu Idaho by year
YearWettest day (Rx1day)
197722.9 mm (0.9 in)
197817.8 mm (0.7 in)
197945.0 mm (1.8 in)
198021.6 mm (0.9 in)
198122.1 mm (0.9 in)
198214.0 mm (0.6 in)
198333.5 mm (1.3 in)
198435.6 mm (1.4 in)
198526.9 mm (1.1 in)
198620.1 mm (0.8 in)
198726.7 mm (1.1 in)
198811.7 mm (0.5 in)
198918.5 mm (0.7 in)
199017.0 mm (0.7 in)
199133.5 mm (1.3 in)
199222.9 mm (0.9 in)
199325.4 mm (1.0 in)
199423.6 mm (0.9 in)
199535.8 mm (1.4 in)
199626.2 mm (1.0 in)
199722.1 mm (0.9 in)
199835.6 mm (1.4 in)
199920.3 mm (0.8 in)
200020.6 mm (0.8 in)
200112.7 mm (0.5 in)
200212.7 mm (0.5 in)
20039.7 mm (0.38 in)
200436.3 mm (1.4 in)
200515.7 mm (0.6 in)
200622.9 mm (0.9 in)
200721.6 mm (0.9 in)
200814.0 mm (0.6 in)
200927.9 mm (1.1 in)
201017.3 mm (0.7 in)
201127.4 mm (1.1 in)
201221.1 mm (0.8 in)
201314.0 mm (0.6 in)
201437.3 mm (1.5 in)
201522.6 mm (0.9 in)
201620.3 mm (0.8 in)
201716.5 mm (0.6 in)
201825.9 mm (1.0 in)
201924.1 mm (0.9 in)
202014.7 mm (0.6 in)
202121.8 mm (0.9 in)
202219.8 mm (0.8 in)
202333.3 mm (1.3 in)
202422.9 mm (0.9 in)
202529.7 mm (1.2 in)
202615.2 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rexburg Byu Idaho by year The wettest five days of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 70.1 mm (2.8 in) in 1993, marked on the chart; the median year is 35.5 mm (1.4 in). 02040608019801990200020102020Record: 70.1 mm (2.8 in) in 1993
The wettest five days of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 70.1 mm (2.8 in) in 1993, marked on the chart; the median year is 35.5 mm (1.4 in).
Wettest five days (Rx5day) at Rexburg Byu Idaho by year
YearWettest five days (Rx5day)
197730.0 mm (1.2 in)
197836.8 mm (1.4 in)
197946.5 mm (1.8 in)
198046.1 mm (1.8 in)
198136.6 mm (1.4 in)
198233.3 mm (1.3 in)
198354.6 mm (2.1 in)
198463.4 mm (2.5 in)
198537.0 mm (1.5 in)
198638.0 mm (1.5 in)
198756.4 mm (2.2 in)
198826.9 mm (1.1 in)
198946.8 mm (1.8 in)
199025.4 mm (1.0 in)
199150.6 mm (2.0 in)
199244.8 mm (1.8 in)
199370.1 mm (2.8 in)
199461.7 mm (2.4 in)
199547.3 mm (1.9 in)
199630.7 mm (1.2 in)
199732.0 mm (1.3 in)
199843.2 mm (1.7 in)
199931.0 mm (1.2 in)
200050.6 mm (2.0 in)
200114.0 mm (0.6 in)
200225.4 mm (1.0 in)
200317.6 mm (0.7 in)
200444.1 mm (1.7 in)
200526.8 mm (1.1 in)
200635.3 mm (1.4 in)
200724.7 mm (1.0 in)
200826.2 mm (1.0 in)
200949.5 mm (1.9 in)
201020.3 mm (0.8 in)
201133.3 mm (1.3 in)
201238.3 mm (1.5 in)
201321.4 mm (0.8 in)
201459.7 mm (2.4 in)
201532.6 mm (1.3 in)
201643.0 mm (1.7 in)
201731.5 mm (1.2 in)
201861.7 mm (2.4 in)
201934.3 mm (1.4 in)
202029.7 mm (1.2 in)
202138.1 mm (1.5 in)
202223.1 mm (0.9 in)
202335.6 mm (1.4 in)
202431.0 mm (1.2 in)
202533.5 mm (1.3 in)
202629.2 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rexburg Byu Idaho by year The longest dry spell of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 65 days in 2000, marked on the chart; the median year is 34 days. 02040608019801990200020102020Record: 65 days in 2000
The longest dry spell of the year at Rexburg Byu Idaho, 1977 to 2026. The record is 65 days in 2000, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Rexburg Byu Idaho by year
YearLongest dry spell (CDD)
197723 days
197851 days
197929 days
198031 days
198134 days
198219 days
198317 days
198423 days
198525 days
198639 days
198754 days
198845 days
198935 days
199034 days
199140 days
199241 days
199344 days
199423 days
199519 days
199631 days
199715 days
199825 days
199958 days
200065 days
200143 days
200220 days
200337 days
200440 days
200535 days
200638 days
200747 days
200827 days
200921 days
201027 days
201144 days
201245 days
201322 days
201436 days
201526 days
201663 days
201722 days
201841 days
201928 days
202031 days
202132 days
202242 days
202313 days
202443 days
202537 days
202625 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

27 years with a frost

Across 27 years with a frost, the median last spring frost at Rexburg Byu Idaho falls on 23 May and the median first autumn frost on 17 September, which leaves a median of 116 days between them.

Fitted over all years, the growing season changes by +9.6 days per decade at this station.

Frost dates and growing season at Rexburg Byu Idaho
MeasureMedian, all yearsEarliest periodRecent period (1978 to 2022)Recent against earliestFitted trend
Last spring frost23 Mayn/a23 Mayn/a-2.3 days per decade
First autumn frost17 Septembern/a17 Septembern/a+7.3 days per decade
Growing days116 daysn/a116 daysn/a+9.6 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

31 years, 1978 to 2025

A day with at least 23.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 51.0 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Rexburg Byu Idaho: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years23.0 mm (0.9 in)
5 years30.4 mm (1.2 in)
10 years35.4 mm (1.4 in)
25 years41.6 mm (1.6 in)
50 years46.3 mm (1.8 in)Longer than the 31 years of record
100 years51.0 mm (2.0 in)Longer than the 31 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, 31 years of values from 1978 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: 45.0 mm (1.8 in) in 1979; 37.3 mm (1.5 in) in 2014; 36.3 mm (1.4 in) in 2004.

Download the Data

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