Dover Threshold Days by Year (ASN00094020)
11 fixed thresholds counted per year at Dover (ASN00094020): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Dover Thresholds
- Dover: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1946 with 45.
- Dover: days with 25 mm (0.98 in) or more of precipitation in 70 years, most in 1958 with 9.
- Dover: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 2013 with 8.
- Dover: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 2008 with 21.
- 11 fixed thresholds have at least one qualifying day at Dover.
Days at or above 30 C (86 F)
34 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1991 | 4 | 4.1 |
| 1992 | 2 | 4.1 |
| 1993 | 6 | 4.1 |
| 1994 | 7 | 4.1 |
| 1995 | 4 | 4.1 |
| 1996 | 1 | 4.1 |
| 1997 | 5 | 4.1 |
| 1998 | 6 | 4.1 |
| 1999 | 2 | 4.1 |
| 2000 | 1 | 3 |
| 2001 | 3 | 3 |
| 2002 | 1 | 3 |
| 2003 | 7 | 3 |
| 2004 | 3 | 3 |
| 2005 | 2 | 3 |
| 2006 | 3 | 3 |
| 2007 | 2 | 3 |
| 2008 | 5 | 3 |
| 2009 | 3 | 3 |
| 2010 | 3 | 3.9 |
| 2011 | 2 | 3.9 |
| 2012 | 5 | 3.9 |
| 2013 | 8 | 3.9 |
| 2014 | 4 | 3.9 |
| 2015 | 3 | 3.9 |
| 2016 | 1 | 3.9 |
| 2017 | 4 | 3.9 |
| 2018 | 3 | 3.9 |
| 2019 | 6 | 3.9 |
| 2020 | 3 | 3.2 |
| 2021 | 5 | 3.2 |
| 2023 | 1 | 3.2 |
| 2024 | 4 | 3.2 |
| 2025 | 3 | 3.2 |
| Year | First date | Last date |
|---|---|---|
| 1991 | 1991-01-03 | 1991-03-07 |
| 1992 | 1992-03-10 | 1992-03-26 |
| 1993 | 1993-01-15 | 1993-12-10 |
| 1994 | 1994-01-26 | 1994-12-28 |
| 1995 | 1995-01-11 | 1995-02-25 |
| 1996 | 1996-10-24 | 1996-10-24 |
| 1997 | 1997-01-05 | 1997-11-22 |
| 1998 | 1998-01-13 | 1998-12-11 |
| 1999 | 1999-01-10 | 1999-12-01 |
| 2000 | 2000-03-02 | 2000-03-02 |
| 2001 | 2001-01-02 | 2001-02-08 |
| 2002 | 2002-11-12 | 2002-11-12 |
| 2003 | 2003-01-20 | 2003-12-30 |
| 2004 | 2004-01-20 | 2004-11-18 |
| 2005 | 2005-01-11 | 2005-01-26 |
| 2006 | 2006-03-03 | 2006-10-12 |
| 2007 | 2007-02-16 | 2007-02-18 |
| 2008 | 2008-01-05 | 2008-12-22 |
| 2009 | 2009-11-20 | 2009-12-31 |
| 2010 | 2010-01-12 | 2010-11-23 |
| 2011 | 2011-01-08 | 2011-11-06 |
| 2012 | 2012-01-17 | 2012-12-08 |
| 2013 | 2013-01-03 | 2013-12-19 |
| 2014 | 2014-01-14 | 2014-03-11 |
| 2015 | 2015-02-22 | 2015-12-25 |
| 2016 | 2016-01-13 | 2016-01-13 |
| 2017 | 2017-03-15 | 2017-11-30 |
| 2018 | 2018-01-06 | 2018-12-24 |
| 2019 | 2019-01-25 | 2019-12-30 |
| 2020 | 2020-01-30 | 2020-12-14 |
| 2021 | 2021-01-11 | 2021-12-18 |
| 2023 | 2023-02-17 | 2023-02-17 |
| 2024 | 2024-02-22 | 2024-03-19 |
| 2025 | 2025-01-27 | 2025-02-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 34 | 8 | 2013 | 3 |
| 35 C (95 F): Days | 20 | 3 | 2013 | 2 |
| 40 C (104 F): Days | 1 | 1 | 2019 | 1 |
| 90 F (32.2 C): Days | 27 | 4 | 2012 | 3 |
| 100 F (37.8 C): Days | 5 | 2 | 2019 | 1 |
| 0 C (32 F): Frost days (min | 34 | 21 | 2008 | 5 |
| 20 C (68 F): Tropical nights (min | 1 | 1 | 2010 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 73 | 45 | 1946 | 16 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 70 | 9 | 1958 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 29 | 3 | 1946 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1960 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1991.
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).