Built 2026-10-15 (15 October 2026)

East Rim Divide Weather Records (USS0010F17S)

Record envelope, standing records and threshold days for East Rim Divide (USS0010F17S), Wyoming, United States, with 42 years of record.

Key Facts for East Rim Divide

  • East Rim Divide (USS0010F17S) is a weather station in Wyoming, United States at 43.13 latitude and -110.20 longitude, 2,417 m (7,930 ft) above sea level.
  • The station reports from 1985 to 2026, 42 years of record.
  • 1,464 records set at East Rim Divide still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • East Rim Divide set a daily record precipitation of 10.2 mm (0.4 in) on 10 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Wyoming, United States, 43.13 latitude, -110.20 longitude.
  • Elevation: 2,417 m (7,930 ft).
  • Period of record: 1985 to 2026, 42 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

25 days at or beyond a record
Daily record high and record low at East Rim Divide, with 2026 drawn through them The band shows the record high and record low for each calendar day at East Rim Divide. The lines show the 2026 daily maximum and minimum. 25 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 East Rim Divide. The lines show the 2026 daily maximum and minimum. 25 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at East Rim Divide, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan8.7 C (47.7 F)-26.8 C (-16.2 F)5.6 C (42.1 F)-18.8 C (-1.8 F)
Feb11.2 C (52.2 F)-28.8 C (-19.8 F)10.0 C (50.0 F)-19.1 C (-2.4 F)
Mar18.5 C (65.3 F)-23.6 C (-10.5 F)18.5 C (65.3 F)-14.5 C (5.9 F)
Apr21.8 C (71.2 F)-17.3 C (0.9 F)17.7 C (63.9 F)-12.1 C (10.2 F)
May27.9 C (82.2 F)-11.3 C (11.7 F)22.8 C (73.0 F)-8.0 C (17.6 F)
Jun30.9 C (87.6 F)-5.9 C (21.4 F)25.6 C (78.1 F)-2.2 C (28.0 F)
Jul33.3 C (91.9 F)-2.3 C (27.9 F)31.8 C (89.2 F)3.4 C (38.1 F)
Aug31.8 C (89.2 F)-10.2 C (13.6 F)29.8 C (85.6 F)1.8 C (35.2 F)
Sep29.1 C (84.4 F)-9.2 C (15.4 F)23.6 C (74.5 F)-1.8 C (28.8 F)
Oct24.7 C (76.5 F)-20.8 C (-5.4 F)22.1 C (71.8 F)3.8 C (38.8 F)
Nov15.5 C (59.9 F)-26.7 C (-16.1 F)n/an/a
Dec11.2 C (52.2 F)-35.2 C (-31.4 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at East Rim Divide by the year they were set 1,464 records at East Rim Divide still stand. 1996 holds the most, with 63. 0204060801985: 241986: 361987: 441988: 471989: 301990: 361991: 241992: 271993: 431994: 211995: 261996: 631997: 191998: 151999: 292000: 262001: 382002: 372003: 582004: 222005: 342006: 422007: 392008: 382009: 312010: 352011: 242012: 342013: 402014: 402015: 402016: 252017: 272018: 192019: 242020: 482021: 512022: 412023: 442024: 352025: 432026: 45198519901995200020052010201520202025
1,464 records at East Rim Divide still stand. 1996 holds the most, with 63.
Standing records at East Rim Divide by the year they were set
Year setStanding records
198524
198636
198744
198847
198930
199036
199124
199227
199343
199421
199526
199663
199719
199815
199929
200026
200138
200237
200358
200422
200534
200642
200739
200838
200931
201035
201124
201234
201340
201440
201540
201625
201727
201819
201924
202048
202151
202241
202344
202435
202543
202645

Wettest Day of Each Month

Mar: 43.2 mm (1.7 in)
Record daily precipitation for each month at East Rim Divide The wettest day on record for each calendar month at East Rim Divide. The most was 43.2 mm (1.7 in) on 23 March 1996. 0204060 Jan: 25.4 mm (1.0 in), 5 January 1987 Jan Feb: 30.5 mm (1.2 in), 22 February 1986 Feb Mar: 43.2 mm (1.7 in), 23 March 1996 Mar Apr: 25.4 mm (1.0 in), 29 April 1999 Apr May: 27.9 mm (1.1 in), 1 May 2002 May Jun: 25.4 mm (1.0 in), 8 June 1995 Jun Jul: 20.3 mm (0.8 in), 17 July 1987 Jul Aug: 27.9 mm (1.1 in), 17 August 2023 Aug Sep: 38.1 mm (1.5 in), 27 September 2014 Sep Oct: 25.4 mm (1.0 in), 16 October 2016 Oct Nov: 33.0 mm (1.3 in), 18 November 1996 Nov Dec: 27.9 mm (1.1 in), 6 December 2001 Dec
The wettest day on record for each calendar month at East Rim Divide. The most was 43.2 mm (1.7 in) on 23 March 1996.
Record daily precipitation for each month at East Rim Divide
MonthRecord daily precipitation (mm)Date
Jan25.4 mm (1.0 in)5 January 1987
Feb30.5 mm (1.2 in)22 February 1986
Mar43.2 mm (1.7 in)23 March 1996
Apr25.4 mm (1.0 in)29 April 1999
May27.9 mm (1.1 in)1 May 2002
Jun25.4 mm (1.0 in)8 June 1995
Jul20.3 mm (0.8 in)17 July 1987
Aug27.9 mm (1.1 in)17 August 2023
Sep38.1 mm (1.5 in)27 September 2014
Oct25.4 mm (1.0 in)16 October 2016
Nov33.0 mm (1.3 in)18 November 1996
Dec27.9 mm (1.1 in)6 December 2001

Period of Record Coverage

1985 to 2026
Days with data per year at East Rim Divide 42 years of record at East Rim Divide, 1985 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1985, 2026. 1985: 133 of 365 days1986: 353 of 365 days1987: 359 of 365 days1988: 361 of 366 days1989: 345 of 365 days1990: 358 of 365 days1991: 359 of 365 days1992: 361 of 366 days1993: 347 of 365 days1994: 352 of 365 days1995: 360 of 365 days1996: 365 of 366 days1997: 364 of 365 days1998: 364 of 365 days1999: 364 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 364 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: 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: 282 of 365 days1990200020102020
42 years of record at East Rim Divide, 1985 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1985, 2026.
Days with data per year at East Rim Divide
YearDays with dataShare of yearComplete
198513336%No
198635397%Yes
198735998%Yes
198836199%Yes
198934595%Yes
199035898%Yes
199135998%Yes
199236199%Yes
199334795%Yes
199435296%Yes
199536099%Yes
1996365100%Yes
1997364100%Yes
1998364100%Yes
1999364100%Yes
2000365100%Yes
2001365100%Yes
2002365100%Yes
2003364100%Yes
2004366100%Yes
2005365100%Yes
2006364100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628277%No

Latest Records

20
Latest records at East Rim Divide
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026East Rim Divide, USdaily rain (Provisional)10.2 mm (0.4 in)5.1 mm (0.20 in)17 years20 of 100 (Routine)
8 October 2026East Rim Divide, USdaily high min (Provisional)7.0 C (44.6 F)0.1 C (0.2 F)29 years12 of 100 (Routine)
7 October 2026East Rim Divide, USdaily high min (Provisional)7.9 C (46.2 F)2.3 C (4.1 F)12 years12 of 100 (Routine)
7 October 2026East Rim Divide, USdaily high max (Provisional)21.4 C (70.5 F)1.3 C (2.3 F)5 years7 of 100 (Routine)
6 October 2026East Rim Divide, USmonthly high min (Provisional)8.2 C (46.8 F)0.4 C (0.7 F)16 years18 of 100 (Routine)
6 October 2026East Rim Divide, USdaily high max (Provisional)20.8 C (69.4 F)0.6 C (1.1 F)5 years5 of 100 (Routine)
5 October 2026East Rim Divide, USdaily high max (Provisional)22.1 C (71.8 F)3.4 C (6.1 F)27 years17 of 100 (Routine)
5 October 2026East Rim Divide, USdaily high min (Provisional)6.9 C (44.4 F)0.5 C (0.9 F)5 years6 of 100 (Routine)
18 September 2026East Rim Divide, USdaily rain (Provisional)15.2 mm (0.6 in)5.0 mm (0.20 in)8 years16 of 100 (Routine)
29 August 2026East Rim Divide, USdaily rain (Provisional)10.2 mm (0.4 in)7.7 mm (0.30 in)40 years20 of 100 (Routine)
28 August 2026East Rim Divide, USdaily rain (Provisional)7.6 mm (0.30 in)2.5 mm (0.10 in)3 years9 of 100 (Routine)
21 August 2026East Rim Divide, USdaily high max (Provisional)29.8 C (85.6 F)1.5 C (2.7 F)15 years11 of 100 (Routine)
21 August 2026East Rim Divide, USdaily high min (Provisional)13.0 C (55.4 F)0.3 C (0.5 F)0 years5 of 100 (Routine)
20 August 2026East Rim Divide, USdaily high max (Provisional)28.7 C (83.7 F)0.2 C (0.4 F)0 years4 of 100 (Routine)
13 August 2026East Rim Divide, USdaily low max13.3 C (55.9 F)4.1 C (7.4 F)28 years22 of 100 (Routine)
10 August 2026East Rim Divide, USdaily high min13.6 C (56.5 F)1.5 C (2.7 F)8 years11 of 100 (Routine)
4 August 2026East Rim Divide, USdaily low min1.8 C (35.2 F)1.3 C (2.3 F)29 years16 of 100 (Routine)
2 August 2026East Rim Divide, USdaily high min14.8 C (58.6 F)0.5 C (0.9 F)25 years12 of 100 (Routine)
29 July 2026East Rim Divide, USdaily rain7.6 mm (0.30 in)2.5 mm (0.10 in)39 years20 of 100 (Routine)
27 July 2026East Rim Divide, USdaily rain10.2 mm (0.4 in)7.7 mm (0.30 in)40 years20 of 100 (Routine)

Climate Trend

39 complete years, 1986 to 2025
Annual mean temperature at East Rim Divide as warming stripes, 1986 to 2025 One stripe for each of 39 complete years at East Rim Divide, 1986 to 2025. Blue stripes are years cooler than the station's own mean of 3.0 C (37.3 F); red stripes are warmer. The coolest year was 1993, at 1.1 C (34.0 F), and the warmest was 2025, at 4.4 C (39.9 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1986: 2.5 C, -0.5 C from the station mean1987: 2.8 C, -0.2 C from the station mean1988: 3.1 C, +0.2 C from the station mean1990: 2.1 C, -0.8 C from the station mean1991: 2.4 C, -0.5 C from the station mean1992: 3.3 C, +0.3 C from the station mean1993: 1.1 C, -1.9 C from the station mean1994: 3.2 C, +0.3 C from the station mean1995: 2.4 C, -0.6 C from the station mean1996: 2.4 C, -0.6 C from the station mean1997: 2.1 C, -0.8 C from the station mean1998: 2.7 C, -0.3 C from the station mean1999: 2.9 C, 0.0 C from the station mean2000: 3.0 C, 0.0 C from the station mean2001: 3.5 C, +0.5 C from the station mean2002: 2.4 C, -0.6 C from the station mean2003: 3.5 C, +0.6 C from the station mean2004: 3.0 C, 0.0 C from the station mean2005: 3.3 C, +0.3 C from the station mean2006: 3.1 C, +0.2 C from the station mean2007: 3.9 C, +0.9 C from the station mean2008: 2.2 C, -0.8 C from the station mean2009: 2.4 C, -0.5 C from the station mean2010: 2.7 C, -0.2 C from the station mean2011: 2.0 C, -0.9 C from the station mean2012: 4.0 C, +1.0 C from the station mean2013: 2.8 C, -0.2 C from the station mean2014: 3.0 C, 0.0 C from the station mean2015: 4.0 C, +1.1 C from the station mean2016: 3.7 C, +0.7 C from the station mean2017: 3.2 C, +0.2 C from the station mean2018: 3.3 C, +0.4 C from the station mean2019: 2.3 C, -0.7 C from the station mean2020: 3.2 C, +0.2 C from the station mean2021: 3.9 C, +0.9 C from the station mean2022: 2.9 C, -0.1 C from the station mean2023: 2.8 C, -0.2 C from the station mean2024: 3.9 C, +1.0 C from the station mean2025: 4.4 C, +1.4 C from the station mean198619901995200020052010201520202025
One stripe for each of 39 complete years at East Rim Divide, 1986 to 2025. Blue stripes are years cooler than the station's own mean of 3.0 C (37.3 F); red stripes are warmer. The coolest year was 1993, at 1.1 C (34.0 F), and the warmest was 2025, at 4.4 C (39.9 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at East Rim Divide as warming stripes, 1986 to 2025
YearAnnual mean temperatureDifference from the station mean
19862.5 C-0.46 C
19872.8 C-0.16 C
19883.1 C+0.16 C
19902.1 C-0.82 C
19912.4 C-0.52 C
19923.3 C+0.33 C
19931.1 C-1.86 C
19943.2 C+0.25 C
19952.4 C-0.61 C
19962.4 C-0.61 C
19972.1 C-0.84 C
19982.7 C-0.29 C
19992.9 C-0.04 C
20003.0 C+0.01 C
20013.5 C+0.53 C
20022.4 C-0.58 C
20033.5 C+0.55 C
20043.0 C+0.00 C
20053.3 C+0.33 C
20063.1 C+0.18 C
20073.9 C+0.89 C
20082.2 C-0.78 C
20092.4 C-0.55 C
20102.7 C-0.24 C
20112.0 C-0.95 C
20124.0 C+1.04 C
20132.8 C-0.17 C
20143.0 C+0.03 C
20154.0 C+1.06 C
20163.7 C+0.74 C
20173.2 C+0.24 C
20183.3 C+0.38 C
20192.3 C-0.66 C
20203.2 C+0.24 C
20213.9 C+0.93 C
20222.9 C-0.09 C
20232.8 C-0.19 C
20243.9 C+0.98 C
20254.4 C+1.41 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1986 to 2025. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 39 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at East Rim Divide
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.8) per decade1986 to 202539Rise
Mean daily maximum0.3 C (0.1 to 0.5) per decade0.5 F (0.1 to 0.9) per decade1986 to 202539Rise
Mean daily minimum0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.8) per decade1986 to 202539Rise

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

1985 to 2026
Yearly extremes at East Rim Divide: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)33.3 C (91.9 F)200229.4 C (84.8 F)42
Coldest night (TNn)-35.2 C (-31.4 F)1990-24.1 C (-11.5 F)42
Wettest day (Rx1day)43.2 mm (1.7 in)199622.9 mm (0.9 in)42
Wettest five days (Rx5day)91.4 mm (3.6 in)198643.1 mm (1.7 in)42
Longest dry spell (CDD)53 days198823 days42

Hottest day (TXx)

Hottest day (TXx) at East Rim Divide by year The hottest day of the year at East Rim Divide, 1985 to 2026. The record is 33.3 C (91.9 F) in 2002, marked on the chart; the median year is 29.4 C (84.8 F). 22.52527.53032.5351990200020102020Record: 33.3 C (91.9 F) in 2002
The hottest day of the year at East Rim Divide, 1985 to 2026. The record is 33.3 C (91.9 F) in 2002, marked on the chart; the median year is 29.4 C (84.8 F).
Hottest day (TXx) at East Rim Divide by year
YearHottest day (TXx)
198528.4 C (83.1 F)
198629.5 C (85.1 F)
198726.9 C (80.4 F)
198830.9 C (87.6 F)
198930.7 C (87.3 F)
199030.0 C (86.0 F)
199129.1 C (84.4 F)
199228.7 C (83.7 F)
199324.8 C (76.6 F)
199429.4 C (84.9 F)
199529.3 C (84.7 F)
199629.0 C (84.2 F)
199728.2 C (82.8 F)
199830.1 C (86.2 F)
199927.7 C (81.9 F)
200031.5 C (88.7 F)
200132.6 C (90.7 F)
200233.3 C (91.9 F)
200331.8 C (89.2 F)
200429.6 C (85.3 F)
200531.1 C (88.0 F)
200631.8 C (89.2 F)
200732.2 C (90.0 F)
200829.9 C (85.8 F)
200928.5 C (83.3 F)
201029.1 C (84.4 F)
201128.8 C (83.8 F)
201229.2 C (84.6 F)
201328.7 C (83.7 F)
201429.3 C (84.7 F)
201528.8 C (83.8 F)
201629.4 C (84.9 F)
201728.2 C (82.8 F)
201829.8 C (85.6 F)
201928.0 C (82.4 F)
202028.9 C (84.0 F)
202130.6 C (87.1 F)
202229.1 C (84.4 F)
202329.7 C (85.5 F)
202431.0 C (87.8 F)
202528.5 C (83.3 F)
202631.8 C (89.2 F)

Coldest night (TNn)

Coldest night (TNn) at East Rim Divide by year The coldest night of the year at East Rim Divide, 1985 to 2026. The record is -35.2 C (-31.4 F) in 1990, marked on the chart; the median year is -24.1 C (-11.5 F). -40-35-30-25-20-151990200020102020Record: -35.2 C (-31.4 F) in 1990
The coldest night of the year at East Rim Divide, 1985 to 2026. The record is -35.2 C (-31.4 F) in 1990, marked on the chart; the median year is -24.1 C (-11.5 F).
Coldest night (TNn) at East Rim Divide by year
YearColdest night (TNn)
1985-24.6 C (-12.3 F)
1986-21.8 C (-7.2 F)
1987-24.3 C (-11.7 F)
1988-22.0 C (-7.6 F)
1989-22.8 C (-9.0 F)
1990-35.2 C (-31.4 F)
1991-24.1 C (-11.4 F)
1992-24.2 C (-11.6 F)
1993-26.2 C (-15.2 F)
1994-22.3 C (-8.1 F)
1995-22.9 C (-9.2 F)
1996-25.6 C (-14.1 F)
1997-26.8 C (-16.2 F)
1998-31.2 C (-24.2 F)
1999-19.5 C (-3.1 F)
2000-18.3 C (-0.9 F)
2001-24.1 C (-11.4 F)
2002-23.5 C (-10.3 F)
2003-25.8 C (-14.4 F)
2004-22.9 C (-9.2 F)
2005-25.9 C (-14.6 F)
2006-27.0 C (-16.6 F)
2007-25.6 C (-14.1 F)
2008-23.7 C (-10.7 F)
2009-26.1 C (-15.0 F)
2010-26.1 C (-15.0 F)
2011-28.8 C (-19.8 F)
2012-21.5 C (-6.7 F)
2013-27.4 C (-17.3 F)
2014-27.5 C (-17.5 F)
2015-22.6 C (-8.7 F)
2016-23.4 C (-10.1 F)
2017-25.9 C (-14.6 F)
2018-23.4 C (-10.1 F)
2019-23.6 C (-10.5 F)
2020-21.0 C (-5.8 F)
2021-20.4 C (-4.7 F)
2022-26.7 C (-16.1 F)
2023-26.6 C (-15.9 F)
2024-23.9 C (-11.0 F)
2025-25.1 C (-13.2 F)
2026-19.1 C (-2.4 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at East Rim Divide by year The wettest day of the year at East Rim Divide, 1985 to 2026. The record is 43.2 mm (1.7 in) in 1996, marked on the chart; the median year is 22.9 mm (0.9 in). 10203040501990200020102020Record: 43.2 mm (1.7 in) in 1996
The wettest day of the year at East Rim Divide, 1985 to 2026. The record is 43.2 mm (1.7 in) in 1996, marked on the chart; the median year is 22.9 mm (0.9 in).
Wettest day (Rx1day) at East Rim Divide by year
YearWettest day (Rx1day)
198520.3 mm (0.8 in)
198630.5 mm (1.2 in)
198725.4 mm (1.0 in)
198820.3 mm (0.8 in)
198920.3 mm (0.8 in)
199020.3 mm (0.8 in)
199127.9 mm (1.1 in)
199220.3 mm (0.8 in)
199320.3 mm (0.8 in)
199420.3 mm (0.8 in)
199527.9 mm (1.1 in)
199643.2 mm (1.7 in)
199730.5 mm (1.2 in)
199830.5 mm (1.2 in)
199925.4 mm (1.0 in)
200020.3 mm (0.8 in)
200127.9 mm (1.1 in)
200227.9 mm (1.1 in)
200320.3 mm (0.8 in)
200422.9 mm (0.9 in)
200517.8 mm (0.7 in)
200615.2 mm (0.6 in)
200715.2 mm (0.6 in)
200825.4 mm (1.0 in)
200917.8 mm (0.7 in)
201022.9 mm (0.9 in)
201117.8 mm (0.7 in)
201222.9 mm (0.9 in)
201317.8 mm (0.7 in)
201438.1 mm (1.5 in)
201517.8 mm (0.7 in)
201625.4 mm (1.0 in)
201733.0 mm (1.3 in)
201822.9 mm (0.9 in)
201925.4 mm (1.0 in)
202015.2 mm (0.6 in)
202117.8 mm (0.7 in)
202225.4 mm (1.0 in)
202327.9 mm (1.1 in)
202422.9 mm (0.9 in)
202522.9 mm (0.9 in)
202620.3 mm (0.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at East Rim Divide by year The wettest five days of the year at East Rim Divide, 1985 to 2026. The record is 91.4 mm (3.6 in) in 1986, marked on the chart; the median year is 43.1 mm (1.7 in). 204060801001990200020102020Record: 91.4 mm (3.6 in) in 1986
The wettest five days of the year at East Rim Divide, 1985 to 2026. The record is 91.4 mm (3.6 in) in 1986, marked on the chart; the median year is 43.1 mm (1.7 in).
Wettest five days (Rx5day) at East Rim Divide by year
YearWettest five days (Rx5day)
198540.6 mm (1.6 in)
198691.4 mm (3.6 in)
198753.3 mm (2.1 in)
198830.4 mm (1.2 in)
198943.2 mm (1.7 in)
199048.2 mm (1.9 in)
199143.1 mm (1.7 in)
199240.6 mm (1.6 in)
199350.8 mm (2.0 in)
199445.7 mm (1.8 in)
199558.4 mm (2.3 in)
199658.4 mm (2.3 in)
199743.1 mm (1.7 in)
199858.5 mm (2.3 in)
199940.6 mm (1.6 in)
200045.7 mm (1.8 in)
200143.1 mm (1.7 in)
200238.1 mm (1.5 in)
200333.0 mm (1.3 in)
200438.1 mm (1.5 in)
200540.6 mm (1.6 in)
200638.0 mm (1.5 in)
200730.4 mm (1.2 in)
200845.7 mm (1.8 in)
200945.8 mm (1.8 in)
201040.7 mm (1.6 in)
201140.7 mm (1.6 in)
201268.6 mm (2.7 in)
201327.9 mm (1.1 in)
201473.6 mm (2.9 in)
201543.2 mm (1.7 in)
201643.2 mm (1.7 in)
201768.6 mm (2.7 in)
201840.7 mm (1.6 in)
201938.0 mm (1.5 in)
202025.4 mm (1.0 in)
202140.6 mm (1.6 in)
202248.2 mm (1.9 in)
202330.4 mm (1.2 in)
202433.1 mm (1.3 in)
202545.7 mm (1.8 in)
202630.5 mm (1.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at East Rim Divide by year The longest dry spell of the year at East Rim Divide, 1985 to 2026. The record is 53 days in 1988, marked on the chart; the median year is 23 days. 1020304050601990200020102020Record: 53 days in 1988
The longest dry spell of the year at East Rim Divide, 1985 to 2026. The record is 53 days in 1988, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at East Rim Divide by year
YearLongest dry spell (CDD)
198516 days
198627 days
198742 days
198853 days
198917 days
199021 days
199123 days
199223 days
199325 days
199419 days
199518 days
199627 days
199723 days
199821 days
199922 days
200015 days
200131 days
200226 days
200337 days
200415 days
200522 days
200618 days
200726 days
200835 days
200923 days
201021 days
201117 days
201227 days
201314 days
201422 days
201517 days
201616 days
201727 days
201850 days
201935 days
202038 days
202145 days
202224 days
202315 days
202441 days
202529 days
202621 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

39 years with a frost

Across 39 years with a frost, the median last spring frost at East Rim Divide falls on 14 June and the median first autumn frost on 9 September, which leaves a median of 87 days between them.

Fitted over all years, the growing season changes by +10.7 days per decade at this station.

Frost dates and growing season at East Rim Divide
MeasureMedian, all yearsEarliest periodRecent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost14 Junen/a14 Junen/a-0.5 days per decade
First autumn frost9 Septembern/a10 Septembern/a+10.2 days per decade
Growing days87 daysn/a87 daysn/a+10.7 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

40 years, 1986 to 2025

A day with at least 22.7 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 43.3 mm (1.7 in) of rain is expected about once in 100 years.

Rainfall return levels at East Rim Divide: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years22.7 mm (0.9 in)
5 years28.1 mm (1.1 in)
10 years31.7 mm (1.2 in)
25 years36.4 mm (1.4 in)
50 years39.8 mm (1.6 in)Longer than the 40 years of record
100 years43.3 mm (1.7 in)Longer than the 40 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, 40 years of values from 1986 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: 43.2 mm (1.7 in) in 1996; 38.1 mm (1.5 in) in 2014; 33.0 mm (1.3 in) in 2017.

Download the Data

  • Data for East Rim Divide standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for East Rim Divide 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).