Little Grassy Weather Records (USS0013M04S)
Record envelope, standing records and threshold days for Little Grassy (USS0013M04S), Utah, United States, with 42 years of record.
Key Facts for Little Grassy
- Little Grassy (USS0013M04S) is a weather station in Utah, United States at 37.49 latitude and -113.85 longitude, 1,859 m (6,100 ft) above sea level.
- The station reports from 1985 to 2026, 42 years of record.
- 1,464 records set at Little Grassy still stand.
- Records are tracked for prcp: an element needs 30 years of data to be eligible.
- Little Grassy set a daily record precipitation of 50.8 mm (2.0 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, 37.49 latitude, -113.85 longitude.
- Elevation: 1,859 m (6,100 ft).
- Period of record: 1985 to 2026, 42 years.
- Eligible elements: prcp.
Daily Record Envelope and 2026
37 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.1 C (62.8 F) | -23.0 C (-9.4 F) | 15.6 C (60.1 F) | -8.7 C (16.3 F) |
| Feb | 19.1 C (66.4 F) | -16.4 C (2.5 F) | 18.5 C (65.3 F) | -12.4 C (9.7 F) |
| Mar | 26.8 C (80.2 F) | -13.1 C (8.4 F) | 26.8 C (80.2 F) | -1.4 C (29.5 F) |
| Apr | 26.3 C (79.3 F) | -8.1 C (17.4 F) | 21.9 C (71.4 F) | -2.7 C (27.1 F) |
| May | 31.9 C (89.4 F) | -3.0 C (26.6 F) | 29.0 C (84.2 F) | -0.1 C (31.8 F) |
| Jun | 37.1 C (98.8 F) | 1.1 C (34.0 F) | 31.9 C (89.4 F) | 6.3 C (43.3 F) |
| Jul | 37.6 C (99.7 F) | 7.9 C (46.2 F) | 33.8 C (92.8 F) | 13.3 C (55.9 F) |
| Aug | 35.6 C (96.1 F) | 7.2 C (45.0 F) | 34.5 C (94.1 F) | 10.0 C (50.0 F) |
| Sep | 34.7 C (94.5 F) | -1.2 C (29.8 F) | 31.4 C (88.5 F) | 7.4 C (45.3 F) |
| Oct | 29.8 C (85.6 F) | -9.8 C (14.4 F) | 27.0 C (80.6 F) | 4.2 C (39.6 F) |
| Nov | 21.8 C (71.2 F) | -14.4 C (6.1 F) | n/a | n/a |
| Dec | 18.4 C (65.1 F) | -21.2 C (-6.2 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 2005 | 45 |
| 2006 | 48 |
| 2007 | 78 |
| 2008 | 64 |
| 2009 | 64 |
| 2010 | 62 |
| 2011 | 75 |
| 2012 | 63 |
| 2013 | 78 |
| 2014 | 45 |
| 2015 | 80 |
| 2016 | 57 |
| 2017 | 82 |
| 2018 | 59 |
| 2019 | 65 |
| 2020 | 79 |
| 2021 | 69 |
| 2022 | 70 |
| 2023 | 69 |
| 2024 | 64 |
| 2025 | 84 |
| 2026 | 64 |
Wettest Day of Each Month
Dec: 142.2 mm (5.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 101.6 mm (4.0 in) | 9 January 2005 |
| Feb | 83.8 mm (3.3 in) | 28 February 1991 |
| Mar | 83.8 mm (3.3 in) | 11 March 1995 |
| Apr | 33.0 mm (1.3 in) | 22 April 2007 |
| May | 58.4 mm (2.3 in) | 24 May 1995 |
| Jun | 48.3 mm (1.9 in) | 2 June 1999 |
| Jul | 45.7 mm (1.8 in) | 27 July 2013 |
| Aug | 91.4 mm (3.6 in) | 12 August 2005 |
| Sep | 68.6 mm (2.7 in) | 27 September 2014 |
| Oct | 104.1 mm (4.1 in) | 20 October 2004 |
| Nov | 55.9 mm (2.2 in) | 8 November 2022 |
| Dec | 142.2 mm (5.6 in) | 19 December 2010 |
Period of Record Coverage
2005 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 2005 | 228 | 62% | No |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 357 | 98% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 364 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 363 | 99% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 2026 | Little Grassy, US | daily rain (Provisional) | 50.8 mm (2.0 in) | 25.4 mm (1.0 in) | 13 years | 29 of 100 (Routine) |
| 11 October 2026 | Little Grassy, US | daily rain (Provisional) | 53.3 mm (2.1 in) | 35.5 mm (1.4 in) | 13 years | 38 of 100 (Notable) |
| 28 September 2026 | Little Grassy, US | daily rain (Provisional) | 15.2 mm (0.6 in) | 12.7 mm (0.5 in) | 31 years | 20 of 100 (Routine) |
| 18 September 2026 | Little Grassy, US | daily rain (Provisional) | 10.2 mm (0.4 in) | 2.6 mm (0.10 in) | 28 years | 14 of 100 (Routine) |
| 17 September 2026 | Little Grassy, US | daily rain (Provisional) | 27.9 mm (1.1 in) | 22.8 mm (0.9 in) | 36 years | 37 of 100 (Notable) |
| 16 September 2026 | Little Grassy, US | daily rain (Tie, Provisional) | 15.2 mm (0.6 in) | tie | 11 years | 1 of 100 (Routine) |
| 16 July 2026 | Little Grassy, US | daily rain | 38.1 mm (1.5 in) | 20.3 mm (0.8 in) | 4 years | 31 of 100 (Routine) |
| 30 June 2026 | Little Grassy, US | daily rain | 7.6 mm (0.30 in) | 5.1 mm (0.20 in) | 9 years | 12 of 100 (Routine) |
| 24 June 2026 | Little Grassy, US | daily rain (Tie) | 2.5 mm (0.10 in) | tie | 33 years | 3 of 100 (Routine) |
| 13 April 2026 | Little Grassy, US | daily rain (Tie) | 7.6 mm (0.30 in) | tie | 37 years | 3 of 100 (Routine) |
| 1 April 2026 | Little Grassy, US | daily rain | 17.8 mm (0.7 in) | 5.1 mm (0.20 in) | 40 years | 20 of 100 (Routine) |
| 4 January 2026 | Little Grassy, US | daily rain | 27.9 mm (1.1 in) | 10.1 mm (0.4 in) | 31 years | 20 of 100 (Routine) |
| 16 November 2025 | Little Grassy, US | daily rain | 45.7 mm (1.8 in) | 33.0 mm (1.3 in) | 10 years | 43 of 100 (Notable) |
| 13 October 2025 | Little Grassy, US | daily rain | 17.8 mm (0.7 in) | 7.6 mm (0.30 in) | 31 years | 19 of 100 (Routine) |
| 9 October 2025 | Little Grassy, US | daily rain | 12.7 mm (0.5 in) | 2.5 mm (0.10 in) | 19 years | 11 of 100 (Routine) |
| 4 September 2025 | Little Grassy, US | daily rain | 15.2 mm (0.6 in) | 2.5 mm (0.10 in) | 24 years | 13 of 100 (Routine) |
| 26 August 2025 | Little Grassy, US | daily rain | 58.4 mm (2.3 in) | 15.2 mm (0.6 in) | 14 years | 22 of 100 (Routine) |
| 24 August 2025 | Little Grassy, US | daily rain | 25.4 mm (1.0 in) | 17.8 mm (0.7 in) | 12 years | 23 of 100 (Routine) |
| 8 June 2025 | Little Grassy, US | daily rain (Tie) | 10.2 mm (0.4 in) | tie | 30 years | 3 of 100 (Routine) |
| 17 May 2025 | Little Grassy, US | daily rain | 10.2 mm (0.4 in) | 2.6 mm (0.10 in) | 2 years | 7 of 100 (Routine) |
Climate Trend
20 complete years, 2006 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 2006 | 10.7 C | -0.32 C |
| 2007 | 11.1 C | +0.07 C |
| 2008 | 10.3 C | -0.70 C |
| 2009 | 10.4 C | -0.62 C |
| 2010 | 10.3 C | -0.71 C |
| 2011 | 9.8 C | -1.19 C |
| 2012 | 11.3 C | +0.28 C |
| 2013 | 10.1 C | -0.90 C |
| 2014 | 11.6 C | +0.57 C |
| 2015 | 11.4 C | +0.43 C |
| 2016 | 11.4 C | +0.39 C |
| 2017 | 11.5 C | +0.49 C |
| 2018 | 11.6 C | +0.64 C |
| 2019 | 10.1 C | -0.94 C |
| 2020 | 11.6 C | +0.61 C |
| 2021 | 11.7 C | +0.69 C |
| 2022 | 11.0 C | -0.04 C |
| 2023 | 10.2 C | -0.81 C |
| 2024 | 12.0 C | +0.96 C |
| 2025 | 12.2 C | +1.15 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
1985 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.6 C (99.7 F) | 2021 | 35.3 C (95.5 F) | 22 |
| Coldest night (TNn) | -23.0 C (-9.4 F) | 2011 | -14.4 C (6.0 F) | 22 |
| Wettest day (Rx1day) | 142.2 mm (5.6 in) | 2010 | 50.8 mm (2.0 in) | 42 |
| Wettest five days (Rx5day) | 431.8 mm (17.0 in) | 2010 | 94.0 mm (3.7 in) | 42 |
| Longest dry spell (CDD) | 94 days | 2020 | 46 days | 42 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 35.8 C (96.4 F) |
| 2007 | 37.5 C (99.5 F) |
| 2008 | 32.9 C (91.2 F) |
| 2009 | 35.2 C (95.4 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 33.3 C (91.9 F) |
| 2012 | 35.4 C (95.7 F) |
| 2013 | 37.1 C (98.8 F) |
| 2014 | 35.0 C (95.0 F) |
| 2015 | 35.8 C (96.4 F) |
| 2016 | 35.9 C (96.6 F) |
| 2017 | 34.7 C (94.5 F) |
| 2018 | 33.8 C (92.8 F) |
| 2019 | 31.8 C (89.2 F) |
| 2020 | 35.6 C (96.1 F) |
| 2021 | 37.6 C (99.7 F) |
| 2022 | 34.7 C (94.5 F) |
| 2023 | 35.7 C (96.3 F) |
| 2024 | 36.8 C (98.2 F) |
| 2025 | 34.4 C (93.9 F) |
| 2026 | 34.5 C (94.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | -9.7 C (14.5 F) |
| 2006 | -11.8 C (10.8 F) |
| 2007 | -18.7 C (-1.7 F) |
| 2008 | -17.6 C (0.3 F) |
| 2009 | -17.4 C (0.7 F) |
| 2010 | -21.0 C (-5.8 F) |
| 2011 | -23.0 C (-9.4 F) |
| 2012 | -16.3 C (2.7 F) |
| 2013 | -21.2 C (-6.2 F) |
| 2014 | -13.3 C (8.1 F) |
| 2015 | -13.2 C (8.2 F) |
| 2016 | -15.6 C (3.9 F) |
| 2017 | -16.1 C (3.0 F) |
| 2018 | -16.4 C (2.5 F) |
| 2019 | -14.9 C (5.2 F) |
| 2020 | -10.9 C (12.4 F) |
| 2021 | -10.4 C (13.3 F) |
| 2022 | -13.7 C (7.3 F) |
| 2023 | -14.0 C (6.8 F) |
| 2024 | -13.0 C (8.6 F) |
| 2025 | -12.3 C (9.9 F) |
| 2026 | -12.4 C (9.7 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1985 | 38.1 mm (1.5 in) |
| 1986 | 50.8 mm (2.0 in) |
| 1987 | 38.1 mm (1.5 in) |
| 1988 | 25.4 mm (1.0 in) |
| 1989 | 38.1 mm (1.5 in) |
| 1990 | 53.3 mm (2.1 in) |
| 1991 | 83.8 mm (3.3 in) |
| 1992 | 53.3 mm (2.1 in) |
| 1993 | 50.8 mm (2.0 in) |
| 1994 | 50.8 mm (2.0 in) |
| 1995 | 83.8 mm (3.3 in) |
| 1996 | 81.3 mm (3.2 in) |
| 1997 | 45.7 mm (1.8 in) |
| 1998 | 48.3 mm (1.9 in) |
| 1999 | 48.3 mm (1.9 in) |
| 2000 | 38.1 mm (1.5 in) |
| 2001 | 43.2 mm (1.7 in) |
| 2002 | 25.4 mm (1.0 in) |
| 2003 | 78.7 mm (3.1 in) |
| 2004 | 104.1 mm (4.1 in) |
| 2005 | 101.6 mm (4.0 in) |
| 2006 | 33.0 mm (1.3 in) |
| 2007 | 78.7 mm (3.1 in) |
| 2008 | 48.3 mm (1.9 in) |
| 2009 | 50.8 mm (2.0 in) |
| 2010 | 142.2 mm (5.6 in) |
| 2011 | 55.9 mm (2.2 in) |
| 2012 | 50.8 mm (2.0 in) |
| 2013 | 45.7 mm (1.8 in) |
| 2014 | 68.6 mm (2.7 in) |
| 2015 | 30.5 mm (1.2 in) |
| 2016 | 58.4 mm (2.3 in) |
| 2017 | 43.2 mm (1.7 in) |
| 2018 | 38.1 mm (1.5 in) |
| 2019 | 53.3 mm (2.1 in) |
| 2020 | 48.3 mm (1.9 in) |
| 2021 | 58.4 mm (2.3 in) |
| 2022 | 55.9 mm (2.2 in) |
| 2023 | 66.0 mm (2.6 in) |
| 2024 | 55.9 mm (2.2 in) |
| 2025 | 58.4 mm (2.3 in) |
| 2026 | 53.3 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1985 | 88.8 mm (3.5 in) |
| 1986 | 101.6 mm (4.0 in) |
| 1987 | 88.9 mm (3.5 in) |
| 1988 | 60.9 mm (2.4 in) |
| 1989 | 50.8 mm (2.0 in) |
| 1990 | 73.7 mm (2.9 in) |
| 1991 | 162.5 mm (6.4 in) |
| 1992 | 129.6 mm (5.1 in) |
| 1993 | 121.9 mm (4.8 in) |
| 1994 | 94.0 mm (3.7 in) |
| 1995 | 111.7 mm (4.4 in) |
| 1996 | 114.2 mm (4.5 in) |
| 1997 | 73.6 mm (2.9 in) |
| 1998 | 119.4 mm (4.7 in) |
| 1999 | 61.0 mm (2.4 in) |
| 2000 | 96.5 mm (3.8 in) |
| 2001 | 55.9 mm (2.2 in) |
| 2002 | 48.2 mm (1.9 in) |
| 2003 | 91.4 mm (3.6 in) |
| 2004 | 195.5 mm (7.7 in) |
| 2005 | 320.0 mm (12.6 in) |
| 2006 | 48.2 mm (1.9 in) |
| 2007 | 91.3 mm (3.6 in) |
| 2008 | 86.4 mm (3.4 in) |
| 2009 | 91.5 mm (3.6 in) |
| 2010 | 431.8 mm (17.0 in) |
| 2011 | 104.1 mm (4.1 in) |
| 2012 | 94.0 mm (3.7 in) |
| 2013 | 60.9 mm (2.4 in) |
| 2014 | 132.0 mm (5.2 in) |
| 2015 | 53.3 mm (2.1 in) |
| 2016 | 76.2 mm (3.0 in) |
| 2017 | 106.7 mm (4.2 in) |
| 2018 | 73.6 mm (2.9 in) |
| 2019 | 94.0 mm (3.7 in) |
| 2020 | 73.7 mm (2.9 in) |
| 2021 | 121.9 mm (4.8 in) |
| 2022 | 78.8 mm (3.1 in) |
| 2023 | 99.0 mm (3.9 in) |
| 2024 | 101.5 mm (4.0 in) |
| 2025 | 93.9 mm (3.7 in) |
| 2026 | 109.2 mm (4.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1985 | 19 days |
| 1986 | 47 days |
| 1987 | 37 days |
| 1988 | 34 days |
| 1989 | 70 days |
| 1990 | 28 days |
| 1991 | 42 days |
| 1992 | 49 days |
| 1993 | 44 days |
| 1994 | 42 days |
| 1995 | 59 days |
| 1996 | 42 days |
| 1997 | 36 days |
| 1998 | 25 days |
| 1999 | 45 days |
| 2000 | 52 days |
| 2001 | 53 days |
| 2002 | 79 days |
| 2003 | 76 days |
| 2004 | 46 days |
| 2005 | 25 days |
| 2006 | 76 days |
| 2007 | 90 days |
| 2008 | 37 days |
| 2009 | 30 days |
| 2010 | 28 days |
| 2011 | 38 days |
| 2012 | 88 days |
| 2013 | 53 days |
| 2014 | 54 days |
| 2015 | 35 days |
| 2016 | 41 days |
| 2017 | 44 days |
| 2018 | 52 days |
| 2019 | 79 days |
| 2020 | 94 days |
| 2021 | 53 days |
| 2022 | 83 days |
| 2023 | 38 days |
| 2024 | 67 days |
| 2025 | 72 days |
| 2026 | 35 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
20 years with a frostAcross 20 years with a frost, the median last spring frost at Little Grassy falls on 2 May and the median first autumn frost on 15 October, which leaves a median of 163 days between them.
| Measure | Median, all years | Earliest period | Recent period (2006 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 2 May | n/a | 2 May | n/a | n/a |
| First autumn frost | 15 October | n/a | 15 October | n/a | n/a |
| Growing days | 163 days | n/a | 163 days | n/a | n/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
40 years, 1986 to 2025A day with at least 51.6 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 142.6 mm (5.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 51.6 mm (2.0 in) | |
| 5 years | 70.5 mm (2.8 in) | |
| 10 years | 85.0 mm (3.3 in) | |
| 25 years | 105.8 mm (4.2 in) | |
| 50 years | 123.2 mm (4.9 in) | Longer than the 40 years of record |
| 100 years | 142.6 mm (5.6 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: 142.2 mm (5.6 in) in 2010; 104.1 mm (4.1 in) in 2004; 101.6 mm (4.0 in) in 2005.
Download the Data
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).