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Built 2026-10-19 (19 October 2026)

Rocky Basin-Settleme Weather Records (USS0012J06S)

Record envelope, standing records and threshold days for Rocky Basin-Settleme (USS0012J06S), Utah, United States, with 46 years of record.

Key Facts for Rocky Basin-Settleme

  • Rocky Basin-Settleme (USS0012J06S) is a weather station in Utah, United States at 40.44 latitude and -112.24 longitude, 2,713 m (8,900 ft) above sea level.
  • The station reports from 1981 to 2026, 46 years of record.
  • 1,464 records set at Rocky Basin-Settleme still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Rocky Basin-Settleme set a daily record precipitation of 33.0 mm (1.3 in) on 12 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Utah, United States, 40.44 latitude, -112.24 longitude.
  • Elevation: 2,713 m (8,900 ft).
  • Period of record: 1981 to 2026, 46 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

26 days at or beyond a record
Daily record high and record low at Rocky Basin-Settleme, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rocky Basin-Settleme. The lines show the 2026 daily maximum and minimum. 26 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 Rocky Basin-Settleme. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Rocky Basin-Settleme, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.8 C (55.0 F)-26.3 C (-15.3 F)6.6 C (43.9 F)-16.7 C (1.9 F)
Feb14.1 C (57.4 F)-26.9 C (-16.4 F)9.8 C (49.6 F)-17.1 C (1.2 F)
Mar17.9 C (64.2 F)-19.0 C (-2.2 F)17.9 C (64.2 F)-12.8 C (9.0 F)
Apr19.5 C (67.1 F)-17.1 C (1.2 F)15.2 C (59.4 F)-11.8 C (10.8 F)
May24.9 C (76.8 F)-12.9 C (8.8 F)24.1 C (75.4 F)-5.5 C (22.1 F)
Jun29.7 C (85.5 F)-6.3 C (20.7 F)26.5 C (79.7 F)-2.0 C (28.4 F)
Jul31.2 C (88.2 F)-1.3 C (29.7 F)31.2 C (88.2 F)7.1 C (44.8 F)
Aug31.2 C (88.2 F)-1.3 C (29.7 F)31.2 C (88.2 F)4.6 C (40.3 F)
Sep29.6 C (85.3 F)-9.7 C (14.5 F)22.6 C (72.7 F)1.7 C (35.1 F)
Oct24.3 C (75.7 F)-20.8 C (-5.4 F)22.6 C (72.7 F)-1.9 C (28.6 F)
Nov16.2 C (61.2 F)-25.1 C (-13.2 F)n/an/a
Dec11.1 C (52.0 F)-24.8 C (-12.6 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Rocky Basin-Settleme by the year they were set 1,464 records at Rocky Basin-Settleme still stand. 2015 holds the most, with 91. 02550751002003: 382004: 672005: 462006: 592007: 842008: 792009: 702010: 622011: 532012: 582013: 562014: 492015: 912016: 592017: 592018: 462019: 482020: 862021: 512022: 682023: 432024: 702025: 582026: 6420032006200920122015201820212024
1,464 records at Rocky Basin-Settleme still stand. 2015 holds the most, with 91.
Standing records at Rocky Basin-Settleme by the year they were set
Year setStanding records
200338
200467
200546
200659
200784
200879
200970
201062
201153
201258
201356
201449
201591
201659
201759
201846
201948
202086
202151
202268
202343
202470
202558
202664

Wettest Day of Each Month

Apr: 109.2 mm (4.3 in)
Record daily precipitation for each month at Rocky Basin-Settleme The wettest day on record for each calendar month at Rocky Basin-Settleme. The most was 109.2 mm (4.3 in) on 25 April 1984. 050100150 Jan: 53.3 mm (2.1 in), 17 January 2019 Jan Feb: 58.4 mm (2.3 in), 24 February 1998 Feb Mar: 78.7 mm (3.1 in), 17 March 1984 Mar Apr: 109.2 mm (4.3 in), 25 April 1984 Apr May: 50.8 mm (2.0 in), 14 May 1991 May Jun: 55.9 mm (2.2 in), 19 June 2011 Jun Jul: 40.6 mm (1.6 in), 16 July 1996 Jul Aug: 78.7 mm (3.1 in), 1 August 2021 Aug Sep: 96.5 mm (3.8 in), 26 September 1982 Sep Oct: 86.4 mm (3.4 in), 20 October 2004 Oct Nov: 96.5 mm (3.8 in), 18 November 1982 Nov Dec: 66.0 mm (2.6 in), 25 December 2008 Dec
The wettest day on record for each calendar month at Rocky Basin-Settleme. The most was 109.2 mm (4.3 in) on 25 April 1984.
Record daily precipitation for each month at Rocky Basin-Settleme
MonthRecord daily precipitation (mm)Date
Jan53.3 mm (2.1 in)17 January 2019
Feb58.4 mm (2.3 in)24 February 1998
Mar78.7 mm (3.1 in)17 March 1984
Apr109.2 mm (4.3 in)25 April 1984
May50.8 mm (2.0 in)14 May 1991
Jun55.9 mm (2.2 in)19 June 2011
Jul40.6 mm (1.6 in)16 July 1996
Aug78.7 mm (3.1 in)1 August 2021
Sep96.5 mm (3.8 in)26 September 1982
Oct86.4 mm (3.4 in)20 October 2004
Nov96.5 mm (3.8 in)18 November 1982
Dec66.0 mm (2.6 in)25 December 2008

Period of Record Coverage

2003 to 2026
Days with data per year at Rocky Basin-Settleme 24 years of record at Rocky Basin-Settleme, 2003 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2003, 2026. 2003: 167 of 365 days2004: 356 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: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 359 of 365 days2022: 365 of 365 days2023: 364 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 269 of 365 days20052010201520202025
24 years of record at Rocky Basin-Settleme, 2003 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2003, 2026.
Days with data per year at Rocky Basin-Settleme
YearDays with dataShare of yearComplete
200316746%No
200435697%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
2018365100%Yes
2019365100%Yes
2020366100%Yes
202135998%Yes
2022365100%Yes
2023364100%Yes
2024366100%Yes
2025365100%Yes
202626974%No

Latest Records

20
Latest records at Rocky Basin-Settleme
DateStationRecordValueBeat old record byOld record stoodSignificance
12 October 2026Rocky Basin-Settleme, USdaily rain (Provisional)33.0 mm (1.3 in)10.1 mm (0.4 in)13 years16 of 100 (Routine)
11 October 2026Rocky Basin-Settleme, USdaily rain (Provisional)40.6 mm (1.6 in)5.0 mm (0.20 in)41 years20 of 100 (Routine)
18 September 2026Rocky Basin-Settleme, USdaily rain (Provisional)12.7 mm (0.5 in)5.1 mm (0.20 in)28 years16 of 100 (Routine)
31 August 2026Rocky Basin-Settleme, USdaily rain (Provisional)53.3 mm (2.1 in)30.4 mm (1.2 in)17 years44 of 100 (Notable)
29 August 2026Rocky Basin-Settleme, USdaily rain (Provisional)22.9 mm (0.9 in)12.7 mm (0.5 in)40 years20 of 100 (Routine)
26 April 2026Rocky Basin-Settleme, USdaily rain45.7 mm (1.8 in)15.2 mm (0.6 in)12 years22 of 100 (Routine)
25 February 2026Rocky Basin-Settleme, USdaily rain (Tie)12.7 mm (0.5 in)tie15 years2 of 100 (Routine)
8 January 2026Rocky Basin-Settleme, USdaily rain15.2 mm (0.6 in)2.5 mm (0.10 in)32 years16 of 100 (Routine)
4 October 2025Rocky Basin-Settleme, USdaily rain53.3 mm (2.1 in)20.3 mm (0.8 in)20 years28 of 100 (Routine)
26 August 2025Rocky Basin-Settleme, USdaily rain20.3 mm (0.8 in)2.5 mm (0.10 in)11 years9 of 100 (Routine)
18 May 2025Rocky Basin-Settleme, USdaily rain25.4 mm (1.0 in)7.6 mm (0.30 in)42 years24 of 100 (Routine)
18 March 2025Rocky Basin-Settleme, USdaily rain27.9 mm (1.1 in)7.6 mm (0.30 in)12 years15 of 100 (Routine)
6 March 2025Rocky Basin-Settleme, USdaily rain68.6 mm (2.7 in)20.3 mm (0.8 in)42 years37 of 100 (Notable)
4 March 2025Rocky Basin-Settleme, USdaily rain (Tie)12.7 mm (0.5 in)tie26 years2 of 100 (Routine)
20 February 2025Rocky Basin-Settleme, USdaily rain (Tie)25.4 mm (1.0 in)tie40 years4 of 100 (Routine)
12 November 2024Rocky Basin-Settleme, USdaily rain (Tie)20.3 mm (0.8 in)tie30 years3 of 100 (Routine)
29 October 2024Rocky Basin-Settleme, USdaily rain58.4 mm (2.3 in)40.6 mm (1.6 in)43 years53 of 100 (Notable)
17 August 2024Rocky Basin-Settleme, USdaily rain22.9 mm (0.9 in)12.7 mm (0.5 in)35 years20 of 100 (Routine)
9 August 2024Rocky Basin-Settleme, USdaily rain (Tie)2.5 mm (0.10 in)tie41 years4 of 100 (Routine)
1 July 2024Rocky Basin-Settleme, USdaily rain (Tie)2.5 mm (0.10 in)tie36 years3 of 100 (Routine)

Climate Trend

22 complete years, 2004 to 2025
Annual mean temperature at Rocky Basin-Settleme as warming stripes, 2004 to 2025 One stripe for each of 22 complete years at Rocky Basin-Settleme, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 4.4 C (39.9 F); red stripes are warmer. The coolest year was 2011, at 3.3 C (37.9 F), and the warmest was 2025, at 5.5 C (41.8 F). The strongest colour marks a difference of 1.2 C (2.2 F). 2004: 3.8 C, -0.6 C from the station mean2005: 4.2 C, -0.2 C from the station mean2006: 4.1 C, -0.3 C from the station mean2007: 4.9 C, +0.5 C from the station mean2008: 3.3 C, -1.1 C from the station mean2009: 3.7 C, -0.8 C from the station mean2010: 3.7 C, -0.7 C from the station mean2011: 3.3 C, -1.1 C from the station mean2012: 5.1 C, +0.7 C from the station mean2013: 3.9 C, -0.5 C from the station mean2014: 4.6 C, +0.2 C from the station mean2015: 5.2 C, +0.8 C from the station mean2016: 5.2 C, +0.8 C from the station mean2017: 5.0 C, +0.6 C from the station mean2018: 4.7 C, +0.3 C from the station mean2019: 3.5 C, -1.0 C from the station mean2020: 4.8 C, +0.4 C from the station mean2021: 4.9 C, +0.5 C from the station mean2022: 4.4 C, 0.0 C from the station mean2023: 3.9 C, -0.5 C from the station mean2024: 5.2 C, +0.8 C from the station mean2025: 5.5 C, +1.0 C from the station mean20042006200820102012201420162018202020222024
One stripe for each of 22 complete years at Rocky Basin-Settleme, 2004 to 2025. Blue stripes are years cooler than the station's own mean of 4.4 C (39.9 F); red stripes are warmer. The coolest year was 2011, at 3.3 C (37.9 F), and the warmest was 2025, at 5.5 C (41.8 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Rocky Basin-Settleme as warming stripes, 2004 to 2025
YearAnnual mean temperatureDifference from the station mean
20043.8 C-0.63 C
20054.2 C-0.21 C
20064.1 C-0.28 C
20074.9 C+0.51 C
20083.3 C-1.07 C
20093.7 C-0.75 C
20103.7 C-0.67 C
20113.3 C-1.10 C
20125.1 C+0.73 C
20133.9 C-0.54 C
20144.6 C+0.23 C
20155.2 C+0.81 C
20165.2 C+0.83 C
20175.0 C+0.57 C
20184.7 C+0.31 C
20193.5 C-0.95 C
20204.8 C+0.44 C
20214.9 C+0.49 C
20224.4 C-0.02 C
20233.9 C-0.49 C
20245.2 C+0.81 C
20255.5 C+1.05 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

1981 to 2026
Yearly extremes at Rocky Basin-Settleme: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)31.2 C (88.2 F)202629.2 C (84.5 F)24
Coldest night (TNn)-26.9 C (-16.4 F)2011-21.7 C (-7.1 F)24
Wettest day (Rx1day)109.2 mm (4.3 in)198450.8 mm (2.0 in)46
Wettest five days (Rx5day)233.6 mm (9.2 in)198288.9 mm (3.5 in)46
Longest dry spell (CDD)48 days199127 days46

Hottest day (TXx)

Hottest day (TXx) at Rocky Basin-Settleme by year The hottest day of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 31.2 C (88.2 F) in 2026, marked on the chart; the median year is 29.2 C (84.5 F). 262830321990200020102020Record: 31.2 C (88.2 F) in 2026
The hottest day of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 31.2 C (88.2 F) in 2026, marked on the chart; the median year is 29.2 C (84.5 F).
Hottest day (TXx) at Rocky Basin-Settleme by year
YearHottest day (TXx)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
200327.7 C (81.9 F)
200426.8 C (80.2 F)
200529.6 C (85.3 F)
200628.9 C (84.0 F)
200729.0 C (84.2 F)
200829.1 C (84.4 F)
200928.7 C (83.7 F)
201028.9 C (84.0 F)
201128.0 C (82.4 F)
201228.6 C (83.5 F)
201329.1 C (84.4 F)
201429.3 C (84.7 F)
201529.7 C (85.5 F)
201629.3 C (84.7 F)
201729.2 C (84.6 F)
201829.3 C (84.7 F)
201928.8 C (83.8 F)
202030.0 C (86.0 F)
202130.4 C (86.7 F)
202229.6 C (85.3 F)
202330.4 C (86.7 F)
202430.2 C (86.4 F)
202529.1 C (84.4 F)
202631.2 C (88.2 F)

Coldest night (TNn)

Coldest night (TNn) at Rocky Basin-Settleme by year The coldest night of the year at Rocky Basin-Settleme, 1981 to 2026. The record is -26.9 C (-16.4 F) in 2011, marked on the chart; the median year is -21.7 C (-7.1 F). -27.5-25-22.5-20-17.5-151990200020102020Record: -26.9 C (-16.4 F) in 2011
The coldest night of the year at Rocky Basin-Settleme, 1981 to 2026. The record is -26.9 C (-16.4 F) in 2011, marked on the chart; the median year is -21.7 C (-7.1 F).
Coldest night (TNn) at Rocky Basin-Settleme by year
YearColdest night (TNn)
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003-21.8 C (-7.2 F)
2004-20.7 C (-5.3 F)
2005-22.5 C (-8.5 F)
2006-21.7 C (-7.1 F)
2007-24.4 C (-11.9 F)
2008-23.4 C (-10.1 F)
2009-23.8 C (-10.8 F)
2010-25.1 C (-13.2 F)
2011-26.9 C (-16.4 F)
2012-21.3 C (-6.3 F)
2013-26.3 C (-15.3 F)
2014-19.9 C (-3.8 F)
2015-20.6 C (-5.1 F)
2016-22.9 C (-9.2 F)
2017-22.4 C (-8.3 F)
2018-21.1 C (-6.0 F)
2019-20.8 C (-5.4 F)
2020-21.8 C (-7.2 F)
2021-18.6 C (-1.5 F)
2022-21.3 C (-6.3 F)
2023-21.4 C (-6.5 F)
2024-18.9 C (-2.0 F)
2025-23.8 C (-10.8 F)
2026-17.1 C (1.2 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Rocky Basin-Settleme by year The wettest day of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 109.2 mm (4.3 in) in 1984, marked on the chart; the median year is 50.8 mm (2.0 in). 2550751001251990200020102020Record: 109.2 mm (4.3 in) in 1984
The wettest day of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 109.2 mm (4.3 in) in 1984, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Rocky Basin-Settleme by year
YearWettest day (Rx1day)
198153.3 mm (2.1 in)
198296.5 mm (3.8 in)
198358.4 mm (2.3 in)
1984109.2 mm (4.3 in)
198553.3 mm (2.1 in)
198668.6 mm (2.7 in)
198748.3 mm (1.9 in)
198843.2 mm (1.7 in)
198943.2 mm (1.7 in)
199048.3 mm (1.9 in)
199168.6 mm (2.7 in)
199238.1 mm (1.5 in)
199327.9 mm (1.1 in)
199430.5 mm (1.2 in)
199558.4 mm (2.3 in)
199640.6 mm (1.6 in)
199750.8 mm (2.0 in)
199858.4 mm (2.3 in)
199950.8 mm (2.0 in)
200035.6 mm (1.4 in)
200133.0 mm (1.3 in)
200227.9 mm (1.1 in)
200343.2 mm (1.7 in)
200486.4 mm (3.4 in)
200561.0 mm (2.4 in)
200648.3 mm (1.9 in)
200725.4 mm (1.0 in)
200866.0 mm (2.6 in)
200938.1 mm (1.5 in)
201048.3 mm (1.9 in)
201155.9 mm (2.2 in)
201250.8 mm (2.0 in)
201371.1 mm (2.8 in)
201440.6 mm (1.6 in)
201543.2 mm (1.7 in)
201645.7 mm (1.8 in)
201763.5 mm (2.5 in)
201833.0 mm (1.3 in)
201953.3 mm (2.1 in)
202025.4 mm (1.0 in)
202178.7 mm (3.1 in)
202245.7 mm (1.8 in)
202350.8 mm (2.0 in)
202458.4 mm (2.3 in)
202568.6 mm (2.7 in)
202653.3 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rocky Basin-Settleme by year The wettest five days of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 233.6 mm (9.2 in) in 1982, marked on the chart; the median year is 88.9 mm (3.5 in). 501001502002501990200020102020Record: 233.6 mm (9.2 in) in 1982
The wettest five days of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 233.6 mm (9.2 in) in 1982, marked on the chart; the median year is 88.9 mm (3.5 in).
Wettest five days (Rx5day) at Rocky Basin-Settleme by year
YearWettest five days (Rx5day)
1981121.8 mm (4.8 in)
1982233.6 mm (9.2 in)
1983104.2 mm (4.1 in)
1984137.1 mm (5.4 in)
198571.1 mm (2.8 in)
1986137.2 mm (5.4 in)
198781.3 mm (3.2 in)
198876.1 mm (3.0 in)
1989104.0 mm (4.1 in)
199083.8 mm (3.3 in)
1991134.7 mm (5.3 in)
199291.4 mm (3.6 in)
199388.9 mm (3.5 in)
199486.4 mm (3.4 in)
199576.1 mm (3.0 in)
199666.0 mm (2.6 in)
199773.6 mm (2.9 in)
1998101.6 mm (4.0 in)
199981.2 mm (3.2 in)
200073.6 mm (2.9 in)
200176.1 mm (3.0 in)
200263.5 mm (2.5 in)
2003101.6 mm (4.0 in)
2004162.5 mm (6.4 in)
2005116.8 mm (4.6 in)
200699.0 mm (3.9 in)
200750.7 mm (2.0 in)
200893.9 mm (3.7 in)
200973.7 mm (2.9 in)
2010129.4 mm (5.1 in)
201188.8 mm (3.5 in)
201276.2 mm (3.0 in)
201386.4 mm (3.4 in)
201476.2 mm (3.0 in)
201581.2 mm (3.2 in)
201671.1 mm (2.8 in)
201796.5 mm (3.8 in)
201871.1 mm (2.8 in)
2019116.8 mm (4.6 in)
202061.0 mm (2.4 in)
2021114.3 mm (4.5 in)
202273.7 mm (2.9 in)
202394.0 mm (3.7 in)
202494.0 mm (3.7 in)
2025124.4 mm (4.9 in)
202693.9 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rocky Basin-Settleme by year The longest dry spell of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 48 days in 1991, marked on the chart; the median year is 27 days. 10203040501990200020102020Record: 48 days in 1991
The longest dry spell of the year at Rocky Basin-Settleme, 1981 to 2026. The record is 48 days in 1991, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Rocky Basin-Settleme by year
YearLongest dry spell (CDD)
198115 days
198236 days
198319 days
198442 days
198530 days
198618 days
198713 days
198830 days
198923 days
199018 days
199148 days
199234 days
199327 days
199440 days
199517 days
199630 days
199726 days
199819 days
199936 days
200023 days
200127 days
200231 days
200342 days
200421 days
200526 days
200620 days
200734 days
200840 days
200922 days
201022 days
201117 days
201238 days
201335 days
201431 days
201521 days
201648 days
201725 days
201841 days
201927 days
202028 days
202131 days
202223 days
202320 days
202436 days
202547 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

22 years with a frost

Across 22 years with a frost, the median last spring frost at Rocky Basin-Settleme falls on 13 June and the median first autumn frost on 17 September, which leaves a median of 101 days between them.

Frost dates and growing season at Rocky Basin-Settleme
MeasureMedian, all yearsEarliest periodRecent period (2004 to 2025)Recent against earliestFitted trend
Last spring frost13 Junen/a13 Junen/an/a
First autumn frost17 Septembern/a17 Septembern/an/a
Growing days101 daysn/a101 daysn/an/a

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

44 years, 1982 to 2025

A day with at least 49.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 108.9 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Rocky Basin-Settleme: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years49.1 mm (1.9 in)
5 years65.3 mm (2.6 in)
10 years75.9 mm (3.0 in)
25 years89.3 mm (3.5 in)
50 years99.2 mm (3.9 in)Longer than the 44 years of record
100 years108.9 mm (4.3 in)Longer than the 44 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, 44 years of values from 1982 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: 109.2 mm (4.3 in) in 1984; 96.5 mm (3.8 in) in 1982; 86.4 mm (3.4 in) in 2004.

Download the Data

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