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Built 2026-10-19 (19 October 2026)

Ben Lomond Trail Weather Records (USS0011H30S)

Record envelope, standing records and threshold days for Ben Lomond Trail (USS0011H30S), Utah, United States, with 47 years of record.

Key Facts for Ben Lomond Trail

  • Ben Lomond Trail (USS0011H30S) is a weather station in Utah, United States at 41.38 latitude and -111.92 longitude, 1,777 m (5,829 ft) above sea level.
  • The station reports from 1980 to 2026, 47 years of record.
  • 1,464 records set at Ben Lomond Trail still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Ben Lomond Trail 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, 41.38 latitude, -111.92 longitude.
  • Elevation: 1,777 m (5,829 ft).
  • Period of record: 1980 to 2026, 47 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

47 days at or beyond a record
Daily record high and record low at Ben Lomond Trail, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ben Lomond Trail. The lines show the 2026 daily maximum and minimum. 47 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 Ben Lomond Trail. The lines show the 2026 daily maximum and minimum. 47 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ben Lomond Trail, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan10.8 C (51.4 F)-25.3 C (-13.5 F)9.0 C (48.2 F)-14.7 C (5.5 F)
Feb14.1 C (57.4 F)-25.4 C (-13.7 F)12.1 C (53.8 F)-12.4 C (9.7 F)
Mar23.1 C (73.6 F)-18.9 C (-2.0 F)23.1 C (73.6 F)-7.5 C (18.5 F)
Apr25.4 C (77.7 F)-13.7 C (7.3 F)21.1 C (70.0 F)-8.0 C (17.6 F)
May27.8 C (82.0 F)-5.9 C (21.4 F)27.3 C (81.1 F)-1.7 C (28.9 F)
Jun31.6 C (88.9 F)-1.7 C (28.9 F)29.3 C (84.7 F)0.6 C (33.1 F)
Jul35.6 C (96.1 F)2.3 C (36.1 F)35.6 C (96.1 F)5.0 C (41.0 F)
Aug34.1 C (93.4 F)1.0 C (33.8 F)34.1 C (93.4 F)6.5 C (43.7 F)
Sep33.5 C (92.3 F)-2.6 C (27.3 F)26.0 C (78.8 F)2.2 C (36.0 F)
Oct26.8 C (80.2 F)-20.6 C (-5.1 F)25.4 C (77.7 F)3.7 C (38.7 F)
Nov19.4 C (66.9 F)-20.5 C (-4.9 F)n/an/a
Dec13.9 C (57.0 F)-24.0 C (-11.2 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ben Lomond Trail by the year they were set 1,464 records at Ben Lomond Trail still stand. 2015 holds the most, with 83. 02550751002004: 332005: 472006: 742007: 692008: 742009: 702010: 672011: 512012: 532013: 772014: 692015: 832016: 552017: 732018: 472019: 462020: 712021: 762022: 742023: 462024: 582025: 792026: 7220042007201020132016201920222025
1,464 records at Ben Lomond Trail still stand. 2015 holds the most, with 83.
Standing records at Ben Lomond Trail by the year they were set
Year setStanding records
200433
200547
200674
200769
200874
200970
201067
201151
201253
201377
201469
201583
201655
201773
201847
201946
202071
202176
202274
202346
202458
202579
202672

Wettest Day of Each Month

Feb: 132.1 mm (5.2 in)
Record daily precipitation for each month at Ben Lomond Trail The wettest day on record for each calendar month at Ben Lomond Trail. The most was 132.1 mm (5.2 in) on 17 February 1986. 050100150 Jan: 81.3 mm (3.2 in), 11 January 1998 Jan Feb: 132.1 mm (5.2 in), 17 February 1986 Feb Mar: 76.2 mm (3.0 in), 11 March 1982 Mar Apr: 53.3 mm (2.1 in), 14 April 2009 Apr May: 68.6 mm (2.7 in), 16 May 2015 May Jun: 73.7 mm (2.9 in), 7 June 1993 Jun Jul: 78.7 mm (3.1 in), 8 July 2015 Jul Aug: 71.1 mm (2.8 in), 27 August 2025 Aug Sep: 101.6 mm (4.0 in), 26 September 1982 Sep Oct: 121.9 mm (4.8 in), 20 October 2004 Oct Nov: 114.3 mm (4.5 in), 8 November 1984 Nov Dec: 114.3 mm (4.5 in), 8 December 1983 Dec
The wettest day on record for each calendar month at Ben Lomond Trail. The most was 132.1 mm (5.2 in) on 17 February 1986.
Record daily precipitation for each month at Ben Lomond Trail
MonthRecord daily precipitation (mm)Date
Jan81.3 mm (3.2 in)11 January 1998
Feb132.1 mm (5.2 in)17 February 1986
Mar76.2 mm (3.0 in)11 March 1982
Apr53.3 mm (2.1 in)14 April 2009
May68.6 mm (2.7 in)16 May 2015
Jun73.7 mm (2.9 in)7 June 1993
Jul78.7 mm (3.1 in)8 July 2015
Aug71.1 mm (2.8 in)27 August 2025
Sep101.6 mm (4.0 in)26 September 1982
Oct121.9 mm (4.8 in)20 October 2004
Nov114.3 mm (4.5 in)8 November 1984
Dec114.3 mm (4.5 in)8 December 1983

Period of Record Coverage

2004 to 2026
Days with data per year at Ben Lomond Trail 23 years of record at Ben Lomond Trail, 2004 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2004, 2026. 2004: 224 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: 364 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 364 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 352 of 365 days2018: 359 of 365 days2019: 359 of 365 days2020: 364 of 366 days2021: 364 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 364 of 366 days2025: 365 of 365 days2026: 286 of 365 days20052010201520202025
23 years of record at Ben Lomond Trail, 2004 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2004, 2026.
Days with data per year at Ben Lomond Trail
YearDays with dataShare of yearComplete
200422461%No
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011364100%Yes
2012366100%Yes
2013365100%Yes
2014364100%Yes
2015365100%Yes
2016366100%Yes
201735296%Yes
201835998%Yes
201935998%Yes
202036499%Yes
2021364100%Yes
2022365100%Yes
2023365100%Yes
202436499%Yes
2025365100%Yes
202628678%No

Latest Records

20
Latest records at Ben Lomond Trail
DateStationRecordValueBeat old record byOld record stoodSignificance
12 October 2026Ben Lomond Trail, USdaily rain (Provisional)33.0 mm (1.3 in)10.1 mm (0.4 in)44 years23 of 100 (Routine)
29 August 2026Ben Lomond Trail, USdaily rain (Provisional)30.5 mm (1.2 in)22.9 mm (0.9 in)43 years36 of 100 (Notable)
13 August 2026Ben Lomond Trail, USdaily rain25.4 mm (1.0 in)15.2 mm (0.6 in)12 years20 of 100 (Routine)
27 June 2026Ben Lomond Trail, USdaily rain (Tie)10.2 mm (0.4 in)tie39 years3 of 100 (Routine)
26 June 2026Ben Lomond Trail, USdaily rain10.2 mm (0.4 in)2.6 mm (0.10 in)12 years9 of 100 (Routine)
26 April 2026Ben Lomond Trail, USdaily rain35.6 mm (1.4 in)15.3 mm (0.6 in)1 year22 of 100 (Routine)
1 April 2026Ben Lomond Trail, USdaily rain20.3 mm (0.8 in)5.1 mm (0.20 in)32 years19 of 100 (Routine)
24 February 2026Ben Lomond Trail, USdaily rain (Tie)35.6 mm (1.4 in)tie28 years3 of 100 (Routine)
1 January 2026Ben Lomond Trail, USdaily rain45.7 mm (1.8 in)15.2 mm (0.6 in)39 years27 of 100 (Routine)
5 December 2025Ben Lomond Trail, USdaily rain (Tie)25.4 mm (1.0 in)tie40 years4 of 100 (Routine)
27 August 2025Ben Lomond Trail, USmonthly rain71.1 mm (2.8 in)12.7 mm (0.5 in)24 years34 of 100 (Routine)
26 August 2025Ben Lomond Trail, USdaily rain53.3 mm (2.1 in)45.7 mm (1.8 in)11 years47 of 100 (Notable)
7 July 2025Ben Lomond Trail, USdaily rain (Tie)2.5 mm (0.10 in)tie24 years2 of 100 (Routine)
14 May 2025Ben Lomond Trail, USdaily rain20.3 mm (0.8 in)10.1 mm (0.4 in)40 years20 of 100 (Routine)
6 March 2025Ben Lomond Trail, USdaily rain50.8 mm (2.0 in)17.8 mm (0.7 in)36 years33 of 100 (Routine)
1 February 2025Ben Lomond Trail, USdaily rain35.6 mm (1.4 in)7.7 mm (0.30 in)19 years14 of 100 (Routine)
17 August 2024Ben Lomond Trail, USdaily rain17.8 mm (0.7 in)5.1 mm (0.20 in)34 years19 of 100 (Routine)
12 August 2024Ben Lomond Trail, USdaily rain (Tie)5.1 mm (0.20 in)tie27 years3 of 100 (Routine)
27 July 2024Ben Lomond Trail, USdaily rain7.6 mm (0.30 in)2.5 mm (0.10 in)9 years8 of 100 (Routine)
25 May 2024Ben Lomond Trail, USdaily rain25.4 mm (1.0 in)10.2 mm (0.4 in)37 years25 of 100 (Routine)

Climate Trend

21 complete years, 2005 to 2025
Annual mean temperature at Ben Lomond Trail as warming stripes, 2005 to 2025 One stripe for each of 21 complete years at Ben Lomond Trail, 2005 to 2025. Blue stripes are years cooler than the station's own mean of 7.0 C (44.7 F); red stripes are warmer. The coolest year was 2019, at 5.9 C (42.5 F), and the warmest was 2025, at 8.4 C (47.1 F). The strongest colour marks a difference of 1.4 C (2.5 F). 2005: 6.9 C, -0.1 C from the station mean2006: 6.7 C, -0.4 C from the station mean2007: 7.3 C, +0.3 C from the station mean2008: 6.2 C, -0.9 C from the station mean2009: 6.2 C, -0.8 C from the station mean2010: 6.5 C, -0.5 C from the station mean2011: 5.9 C, -1.1 C from the station mean2012: 7.8 C, +0.7 C from the station mean2013: 6.4 C, -0.6 C from the station mean2014: 7.4 C, +0.4 C from the station mean2015: 7.8 C, +0.7 C from the station mean2016: 7.5 C, +0.4 C from the station mean2017: 7.3 C, +0.3 C from the station mean2018: 7.3 C, +0.2 C from the station mean2019: 5.9 C, -1.2 C from the station mean2020: 7.2 C, +0.1 C from the station mean2021: 7.9 C, +0.8 C from the station mean2022: 6.7 C, -0.3 C from the station mean2023: 6.7 C, -0.3 C from the station mean2024: 7.8 C, +0.8 C from the station mean2025: 8.4 C, +1.4 C from the station mean2005200820102012201420162018202020222024
One stripe for each of 21 complete years at Ben Lomond Trail, 2005 to 2025. Blue stripes are years cooler than the station's own mean of 7.0 C (44.7 F); red stripes are warmer. The coolest year was 2019, at 5.9 C (42.5 F), and the warmest was 2025, at 8.4 C (47.1 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Ben Lomond Trail as warming stripes, 2005 to 2025
YearAnnual mean temperatureDifference from the station mean
20056.9 C-0.11 C
20066.7 C-0.35 C
20077.3 C+0.31 C
20086.2 C-0.88 C
20096.2 C-0.79 C
20106.5 C-0.49 C
20115.9 C-1.14 C
20127.8 C+0.75 C
20136.4 C-0.59 C
20147.4 C+0.36 C
20157.8 C+0.74 C
20167.5 C+0.43 C
20177.3 C+0.31 C
20187.3 C+0.22 C
20195.9 C-1.18 C
20207.2 C+0.15 C
20217.9 C+0.83 C
20226.7 C-0.33 C
20236.7 C-0.33 C
20247.8 C+0.80 C
20258.4 C+1.36 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

1980 to 2026
Yearly extremes at Ben Lomond Trail: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)202632.2 C (90.0 F)23
Coldest night (TNn)-25.4 C (-13.7 F)2011-20.6 C (-5.1 F)23
Wettest day (Rx1day)132.1 mm (5.2 in)198666.0 mm (2.6 in)47
Wettest five days (Rx5day)279.4 mm (11.0 in)1986124.4 mm (4.9 in)47
Longest dry spell (CDD)81 days200033 days47

Hottest day (TXx)

Hottest day (TXx) at Ben Lomond Trail by year The hottest day of the year at Ben Lomond Trail, 1980 to 2026. The record is 35.6 C (96.1 F) in 2026, marked on the chart; the median year is 32.2 C (90.0 F). 283032343619801990200020102020Record: 35.6 C (96.1 F) in 2026
The hottest day of the year at Ben Lomond Trail, 1980 to 2026. The record is 35.6 C (96.1 F) in 2026, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Ben Lomond Trail by year
YearHottest day (TXx)
1980n/a
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
2003n/a
200429.8 C (85.6 F)
200532.2 C (90.0 F)
200632.7 C (90.9 F)
200733.0 C (91.4 F)
200830.8 C (87.4 F)
200930.4 C (86.7 F)
201030.0 C (86.0 F)
201130.0 C (86.0 F)
201232.4 C (90.3 F)
201331.6 C (88.9 F)
201430.8 C (87.4 F)
201531.0 C (87.8 F)
201631.3 C (88.3 F)
201731.4 C (88.5 F)
201833.3 C (91.9 F)
201931.3 C (88.3 F)
202033.6 C (92.5 F)
202133.9 C (93.0 F)
202233.5 C (92.3 F)
202332.6 C (90.7 F)
202433.4 C (92.1 F)
202533.0 C (91.4 F)
202635.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Ben Lomond Trail by year The coldest night of the year at Ben Lomond Trail, 1980 to 2026. The record is -25.4 C (-13.7 F) in 2011, marked on the chart; the median year is -20.6 C (-5.1 F). -30-25-20-15-1019801990200020102020Record: -25.4 C (-13.7 F) in 2011
The coldest night of the year at Ben Lomond Trail, 1980 to 2026. The record is -25.4 C (-13.7 F) in 2011, marked on the chart; the median year is -20.6 C (-5.1 F).
Coldest night (TNn) at Ben Lomond Trail by year
YearColdest night (TNn)
1980n/a
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
2003n/a
2004-18.8 C (-1.8 F)
2005-23.0 C (-9.4 F)
2006-21.3 C (-6.3 F)
2007-22.9 C (-9.2 F)
2008-19.4 C (-2.9 F)
2009-22.2 C (-8.0 F)
2010-20.5 C (-4.9 F)
2011-25.4 C (-13.7 F)
2012-17.4 C (0.7 F)
2013-24.1 C (-11.4 F)
2014-24.0 C (-11.2 F)
2015-20.6 C (-5.1 F)
2016-20.7 C (-5.3 F)
2017-25.3 C (-13.5 F)
2018-18.0 C (-0.4 F)
2019-20.6 C (-5.1 F)
2020-17.8 C (0.0 F)
2021-14.4 C (6.1 F)
2022-19.7 C (-3.5 F)
2023-23.8 C (-10.8 F)
2024-16.4 C (2.5 F)
2025-19.6 C (-3.3 F)
2026-14.7 C (5.5 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ben Lomond Trail by year The wettest day of the year at Ben Lomond Trail, 1980 to 2026. The record is 132.1 mm (5.2 in) in 1986, marked on the chart; the median year is 66.0 mm (2.6 in). 05010015019801990200020102020Record: 132.1 mm (5.2 in) in 1986
The wettest day of the year at Ben Lomond Trail, 1980 to 2026. The record is 132.1 mm (5.2 in) in 1986, marked on the chart; the median year is 66.0 mm (2.6 in).
Wettest day (Rx1day) at Ben Lomond Trail by year
YearWettest day (Rx1day)
198022.9 mm (0.9 in)
198150.8 mm (2.0 in)
1982101.6 mm (4.0 in)
1983114.3 mm (4.5 in)
1984114.3 mm (4.5 in)
198581.3 mm (3.2 in)
1986132.1 mm (5.2 in)
198743.2 mm (1.7 in)
198848.3 mm (1.9 in)
198948.3 mm (1.9 in)
199048.3 mm (1.9 in)
199158.4 mm (2.3 in)
199286.4 mm (3.4 in)
199373.7 mm (2.9 in)
199478.7 mm (3.1 in)
199566.0 mm (2.6 in)
199678.7 mm (3.1 in)
199745.7 mm (1.8 in)
199881.3 mm (3.2 in)
199933.0 mm (1.3 in)
200058.4 mm (2.3 in)
200166.0 mm (2.6 in)
200268.6 mm (2.7 in)
200345.7 mm (1.8 in)
2004121.9 mm (4.8 in)
200588.9 mm (3.5 in)
200666.0 mm (2.6 in)
200735.6 mm (1.4 in)
200876.2 mm (3.0 in)
200978.7 mm (3.1 in)
2010121.9 mm (4.8 in)
201176.2 mm (3.0 in)
201253.3 mm (2.1 in)
201333.0 mm (1.3 in)
201466.0 mm (2.6 in)
201578.7 mm (3.1 in)
2016111.8 mm (4.4 in)
201778.7 mm (3.1 in)
201855.9 mm (2.2 in)
201961.0 mm (2.4 in)
202048.3 mm (1.9 in)
202135.6 mm (1.4 in)
202286.4 mm (3.4 in)
202358.4 mm (2.3 in)
202448.3 mm (1.9 in)
202571.1 mm (2.8 in)
202648.3 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ben Lomond Trail by year The wettest five days of the year at Ben Lomond Trail, 1980 to 2026. The record is 279.4 mm (11.0 in) in 1986, marked on the chart; the median year is 124.4 mm (4.9 in). 010020030019801990200020102020Record: 279.4 mm (11.0 in) in 1986
The wettest five days of the year at Ben Lomond Trail, 1980 to 2026. The record is 279.4 mm (11.0 in) in 1986, marked on the chart; the median year is 124.4 mm (4.9 in).
Wettest five days (Rx5day) at Ben Lomond Trail by year
YearWettest five days (Rx5day)
198038.1 mm (1.5 in)
1981134.6 mm (5.3 in)
1982236.3 mm (9.3 in)
1983167.6 mm (6.6 in)
1984144.8 mm (5.7 in)
198599.1 mm (3.9 in)
1986279.4 mm (11.0 in)
198794.0 mm (3.7 in)
1988111.8 mm (4.4 in)
1989116.8 mm (4.6 in)
199096.6 mm (3.8 in)
1991109.2 mm (4.3 in)
1992205.7 mm (8.1 in)
1993134.7 mm (5.3 in)
1994134.7 mm (5.3 in)
1995114.3 mm (4.5 in)
1996162.7 mm (6.4 in)
1997124.4 mm (4.9 in)
1998180.4 mm (7.1 in)
1999106.7 mm (4.2 in)
2000170.2 mm (6.7 in)
2001124.4 mm (4.9 in)
200296.5 mm (3.8 in)
2003114.2 mm (4.5 in)
2004274.2 mm (10.8 in)
2005154.9 mm (6.1 in)
2006221.1 mm (8.7 in)
200788.8 mm (3.5 in)
2008124.4 mm (4.9 in)
2009126.9 mm (5.0 in)
2010198.2 mm (7.8 in)
201191.4 mm (3.6 in)
2012149.8 mm (5.9 in)
201355.8 mm (2.2 in)
2014121.8 mm (4.8 in)
2015119.4 mm (4.7 in)
2016172.8 mm (6.8 in)
2017182.9 mm (7.2 in)
201891.4 mm (3.6 in)
2019106.7 mm (4.2 in)
202066.0 mm (2.6 in)
202188.9 mm (3.5 in)
2022144.8 mm (5.7 in)
2023116.9 mm (4.6 in)
2024106.7 mm (4.2 in)
2025124.4 mm (4.9 in)
2026132.1 mm (5.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ben Lomond Trail by year The longest dry spell of the year at Ben Lomond Trail, 1980 to 2026. The record is 81 days in 2000, marked on the chart; the median year is 33 days. 02040608010019801990200020102020Record: 81 days in 2000
The longest dry spell of the year at Ben Lomond Trail, 1980 to 2026. The record is 81 days in 2000, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Ben Lomond Trail by year
YearLongest dry spell (CDD)
198013 days
198149 days
198224 days
198325 days
198424 days
198516 days
198624 days
198725 days
198836 days
198924 days
199025 days
199136 days
199225 days
199331 days
199431 days
199540 days
199659 days
199727 days
199834 days
199964 days
200081 days
200135 days
200258 days
200340 days
200426 days
200535 days
200632 days
200745 days
200842 days
200943 days
201017 days
201120 days
201222 days
201347 days
201437 days
201516 days
201651 days
201728 days
201840 days
201942 days
202042 days
202152 days
202239 days
202328 days
202429 days
202533 days
202631 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

21 years with a frost

Across 21 years with a frost, the median last spring frost at Ben Lomond Trail falls on 24 May and the median first autumn frost on 26 September, which leaves a median of 128 days between them.

Frost dates and growing season at Ben Lomond Trail
MeasureMedian, all yearsEarliest periodRecent period (2005 to 2025)Recent against earliestFitted trend
Last spring frost24 Mayn/a24 Mayn/an/a
First autumn frost26 Septembern/a26 Septembern/an/a
Growing days128 daysn/a128 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

45 years, 1981 to 2025

A day with at least 66.7 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 149.1 mm (5.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ben Lomond Trail: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years66.7 mm (2.6 in)
5 years90.0 mm (3.5 in)
10 years104.9 mm (4.1 in)
25 years123.2 mm (4.9 in)
50 years136.4 mm (5.4 in)Longer than the 45 years of record
100 years149.1 mm (5.9 in)Longer than the 45 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, 45 years of values from 1981 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: 132.1 mm (5.2 in) in 1986; 121.9 mm (4.8 in) in 2004; 121.9 mm (4.8 in) in 2010.

Download the Data

  • Data for Ben Lomond Trail standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ben Lomond Trail 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).