WFO Sterling Threshold Days by Year (USC00448084)
18 fixed thresholds counted per year at WFO Sterling (USC00448084): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for WFO Sterling Thresholds
- WFO Sterling: days with a maximum temperature at or above 30 C (86 F) in 49 years, most in 1998 with 89.
- WFO Sterling: days with a maximum temperature at or above 90 F (32.2 C) in 49 years, most in 2010 with 60.
- WFO Sterling: nights with a minimum temperature at or below 0 C (32 F) in 49 years, most in 2001 with 144.
- WFO Sterling: nights with a minimum temperature at or above 20 C (68 F) in 49 years, most in 2020 with 58.
- 18 fixed thresholds have at least one qualifying day at WFO Sterling.
Days at or above 30 C (86 F)
49 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1978 | 52 | 44.5 |
| 1979 | 37 | 44.5 |
| 1980 | 71 | 56.9 |
| 1981 | 41 | 56.9 |
| 1982 | 34 | 56.9 |
| 1983 | 73 | 56.9 |
| 1984 | 48 | 56.9 |
| 1985 | 50 | 56.9 |
| 1986 | 72 | 56.9 |
| 1987 | 64 | 56.9 |
| 1988 | 63 | 56.9 |
| 1989 | 53 | 56.9 |
| 1990 | 57 | 64.8 |
| 1991 | 88 | 64.8 |
| 1992 | 34 | 64.8 |
| 1993 | 72 | 64.8 |
| 1994 | 62 | 64.8 |
| 1995 | 63 | 64.8 |
| 1996 | 47 | 64.8 |
| 1997 | 66 | 64.8 |
| 1998 | 89 | 64.8 |
| 1999 | 70 | 64.8 |
| 2000 | 51 | 57.6 |
| 2001 | 62 | 57.6 |
| 2002 | 78 | 57.6 |
| 2003 | 41 | 57.6 |
| 2004 | 48 | 57.6 |
| 2005 | 65 | 57.6 |
| 2006 | 62 | 57.6 |
| 2007 | 76 | 57.6 |
| 2008 | 49 | 57.6 |
| 2009 | 44 | 57.6 |
| 2010 | 88 | 68.9 |
| 2011 | 72 | 68.9 |
| 2012 | 72 | 68.9 |
| 2013 | 62 | 68.9 |
| 2014 | 49 | 68.9 |
| 2015 | 64 | 68.9 |
| 2016 | 78 | 68.9 |
| 2017 | 64 | 68.9 |
| 2018 | 59 | 68.9 |
| 2019 | 81 | 68.9 |
| 2020 | 62 | 65.4 |
| 2021 | 67 | 65.4 |
| 2022 | 66 | 65.4 |
| 2023 | 61 | 65.4 |
| 2024 | 66 | 65.4 |
| 2025 | 55 | 65.4 |
| 2026 | 81 | 65.4 |
| Year | First date | Last date |
|---|---|---|
| 1978 | 1978-05-21 | 1978-09-22 |
| 1979 | 1979-05-09 | 1979-09-08 |
| 1980 | 1980-05-06 | 1980-09-23 |
| 1981 | 1981-04-29 | 1981-09-15 |
| 1982 | 1982-05-08 | 1982-09-13 |
| 1983 | 1983-04-29 | 1983-10-05 |
| 1984 | 1984-05-20 | 1984-09-25 |
| 1985 | 1985-04-20 | 1985-09-11 |
| 1986 | 1986-05-02 | 1986-10-03 |
| 1987 | 1987-05-11 | 1987-09-16 |
| 1988 | 1988-05-24 | 1988-09-25 |
| 1989 | 1989-03-29 | 1989-10-17 |
| 1990 | 1990-03-13 | 1990-10-10 |
| 1991 | 1991-04-08 | 1991-09-19 |
| 1992 | 1992-04-18 | 1992-09-23 |
| 1993 | 1993-05-12 | 1993-09-16 |
| 1994 | 1994-04-26 | 1994-09-18 |
| 1995 | 1995-04-20 | 1995-10-07 |
| 1996 | 1996-04-23 | 1996-09-11 |
| 1997 | 1997-05-20 | 1997-10-08 |
| 1998 | 1998-03-28 | 1998-10-01 |
| 1999 | 1999-04-09 | 1999-09-21 |
| 2000 | 2000-05-06 | 2000-10-05 |
| 2001 | 2001-04-10 | 2001-10-25 |
| 2002 | 2002-04-17 | 2002-10-06 |
| 2003 | 2003-04-17 | 2003-08-31 |
| 2004 | 2004-04-19 | 2004-08-31 |
| 2005 | 2005-04-21 | 2005-09-24 |
| 2006 | 2006-05-29 | 2006-08-30 |
| 2007 | 2007-05-26 | 2007-10-09 |
| 2008 | 2008-06-06 | 2008-09-15 |
| 2009 | 2009-04-26 | 2009-09-24 |
| 2010 | 2010-04-07 | 2010-10-12 |
| 2011 | 2011-04-05 | 2011-09-15 |
| 2012 | 2012-04-17 | 2012-09-09 |
| 2013 | 2013-04-10 | 2013-10-07 |
| 2014 | 2014-05-09 | 2014-09-22 |
| 2015 | 2015-05-13 | 2015-09-19 |
| 2016 | 2016-05-27 | 2016-10-20 |
| 2017 | 2017-04-12 | 2017-10-11 |
| 2018 | 2018-04-13 | 2018-10-04 |
| 2019 | 2019-05-19 | 2019-10-02 |
| 2020 | 2020-05-15 | 2020-09-04 |
| 2021 | 2021-04-27 | 2021-09-18 |
| 2022 | 2022-04-13 | 2022-09-19 |
| 2023 | 2023-04-05 | 2023-09-12 |
| 2024 | 2024-04-29 | 2024-09-01 |
| 2025 | 2025-05-16 | 2025-09-19 |
| 2026 | 2026-03-11 | 2026-10-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 49 | 89 | 1998 | 81 |
| 35 C (95 F): Days | 42 | 24 | 2010 | 9 |
| 40 C (104 F): Days | 2 | 1 | 1983 | 1 |
| 90 F (32.2 C): Days | 49 | 60 | 2010 | 31 |
| 100 F (37.8 C): Days | 14 | 4 | 2010 | 4 |
| 0 C (32 F): Ice days (max | 48 | 26 | 1978 | 11 |
| 0 C (32 F): Frost days (min | 49 | 144 | 2001 | 55 |
| -10 C (14 F): Days with min | 47 | 35 | 2000 | 14 |
| -20 C (-4 F): Days with min | 12 | 5 | 1979 | 1 |
| 20 C (68 F): Tropical nights (min | 49 | 58 | 2020 | 70 |
| 25 C (77 F): Days with min | 5 | 3 | 2024 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 49 | 54 | 2018 | 32 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 49 | 21 | 2003 | 12 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 42 | 8 | 2003 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 8 | 2 | 2008 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 36 | 5 | 1996 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 9 | 3 | 1987 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 2010 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).