Richmond Wtr Wks Threshold Days by Year (USC00127370)
18 fixed thresholds counted per year at Richmond Wtr Wks (USC00127370): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Richmond Wtr Wks Thresholds
- Richmond Wtr Wks: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1990 with 51.
- Richmond Wtr Wks: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1990 with 18.
- Richmond Wtr Wks: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 2007 with 75.
- Richmond Wtr Wks: days with a maximum temperature at or below 0 C (32 F) in 55 years, most in 1978 with 60.
- 18 fixed thresholds have at least one qualifying day at Richmond Wtr Wks.
Days at or above 30 C (86 F)
55 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1969 | 46 | 46 |
| 1970 | 49 | 38.6 |
| 1971 | 42 | 38.6 |
| 1972 | 40 | 38.6 |
| 1973 | 46 | 38.6 |
| 1974 | 15 | 38.6 |
| 1975 | 59 | 38.6 |
| 1976 | 26 | 38.6 |
| 1977 | 54 | 38.6 |
| 1978 | 34 | 38.6 |
| 1979 | 21 | 38.6 |
| 1980 | 52 | 42.6 |
| 1981 | 25 | 42.6 |
| 1982 | 35 | 42.6 |
| 1983 | 74 | 42.6 |
| 1984 | 43 | 42.6 |
| 1985 | 33 | 42.6 |
| 1986 | 35 | 42.6 |
| 1988 | 57 | 42.6 |
| 1989 | 29 | 42.6 |
| 1990 | 29 | 39.1 |
| 1991 | 60 | 39.1 |
| 1992 | 13 | 39.1 |
| 1993 | 41 | 39.1 |
| 1994 | 34 | 39.1 |
| 1995 | 49 | 39.1 |
| 1996 | 35 | 39.1 |
| 1997 | 26 | 39.1 |
| 1998 | 44 | 39.1 |
| 1999 | 60 | 39.1 |
| 2000 | 13 | 43.8 |
| 2001 | 38 | 43.8 |
| 2002 | 68 | 43.8 |
| 2003 | 27 | 43.8 |
| 2004 | 35 | 43.8 |
| 2005 | 56 | 43.8 |
| 2006 | 38 | 43.8 |
| 2007 | 75 | 43.8 |
| 2010 | 64 | 48.3 |
| 2011 | 56 | 48.3 |
| 2012 | 61 | 48.3 |
| 2013 | 35 | 48.3 |
| 2014 | 29 | 48.3 |
| 2015 | 36 | 48.3 |
| 2016 | 64 | 48.3 |
| 2017 | 34 | 48.3 |
| 2018 | 59 | 48.3 |
| 2019 | 45 | 48.3 |
| 2020 | 27 | 30.4 |
| 2021 | 38 | 30.4 |
| 2022 | 27 | 30.4 |
| 2023 | 20 | 30.4 |
| 2024 | 33 | 30.4 |
| 2025 | 41 | 30.4 |
| 2026 | 27 | 30.4 |
| Year | First date | Last date |
|---|---|---|
| 1969 | 1969-05-05 | 1969-09-06 |
| 1970 | 1970-05-20 | 1970-09-23 |
| 1971 | 1971-06-04 | 1971-10-02 |
| 1972 | 1972-05-24 | 1972-09-17 |
| 1973 | 1973-06-03 | 1973-09-26 |
| 1974 | 1974-05-21 | 1974-08-27 |
| 1975 | 1975-05-20 | 1975-10-14 |
| 1976 | 1976-06-08 | 1976-09-08 |
| 1977 | 1977-04-18 | 1977-09-02 |
| 1978 | 1978-05-27 | 1978-09-20 |
| 1979 | 1979-05-10 | 1979-09-12 |
| 1980 | 1980-05-29 | 1980-09-22 |
| 1981 | 1981-06-08 | 1981-08-26 |
| 1982 | 1982-05-13 | 1982-09-14 |
| 1983 | 1983-06-10 | 1983-09-19 |
| 1984 | 1984-05-19 | 1984-09-22 |
| 1985 | 1985-04-22 | 1985-09-09 |
| 1986 | 1986-04-26 | 1986-09-29 |
| 1988 | 1988-05-15 | 1988-08-25 |
| 1989 | 1989-05-30 | 1989-09-09 |
| 1990 | 1990-04-25 | 1990-09-06 |
| 1991 | 1991-05-13 | 1991-09-16 |
| 1992 | 1992-06-17 | 1992-08-26 |
| 1993 | 1993-05-09 | 1993-08-31 |
| 1994 | 1994-05-22 | 1994-09-16 |
| 1995 | 1995-06-06 | 1995-09-06 |
| 1996 | 1996-05-18 | 1996-08-23 |
| 1997 | 1997-06-19 | 1997-09-19 |
| 1998 | 1998-05-13 | 1998-09-29 |
| 1999 | 1999-05-17 | 1999-09-28 |
| 2000 | 2000-05-31 | 2000-09-01 |
| 2001 | 2001-04-07 | 2001-09-09 |
| 2002 | 2002-05-31 | 2002-09-19 |
| 2003 | 2003-06-23 | 2003-08-28 |
| 2004 | 2004-05-06 | 2004-09-23 |
| 2005 | 2005-05-11 | 2005-10-03 |
| 2006 | 2006-05-25 | 2006-10-04 |
| 2007 | 2007-04-30 | 2007-10-08 |
| 2010 | 2010-05-26 | 2010-10-10 |
| 2011 | 2011-05-11 | 2011-09-13 |
| 2012 | 2012-05-07 | 2012-09-05 |
| 2013 | 2013-05-15 | 2013-09-11 |
| 2014 | 2014-05-08 | 2014-09-05 |
| 2015 | 2015-05-07 | 2015-09-08 |
| 2016 | 2016-05-27 | 2016-09-23 |
| 2017 | 2017-05-16 | 2017-09-26 |
| 2018 | 2018-05-11 | 2018-10-08 |
| 2019 | 2019-05-18 | 2019-10-02 |
| 2020 | 2020-06-02 | 2020-09-09 |
| 2021 | 2021-05-24 | 2021-09-18 |
| 2022 | 2022-05-31 | 2022-09-21 |
| 2023 | 2023-06-01 | 2023-09-05 |
| 2024 | 2024-05-19 | 2024-09-21 |
| 2025 | 2025-06-21 | 2025-09-29 |
| 2026 | 2026-06-07 | 2026-10-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 55 | 75 | 2007 | 27 |
| 35 C (95 F): Days | 19 | 16 | 1988 | 1 |
| 40 C (104 F): Days | 1 | 1 | 2012 | 1 |
| 90 F (32.2 C): Days | 53 | 48 | 1983 | 5 |
| 100 F (37.8 C): Days | 4 | 3 | 2012 | 3 |
| 0 C (32 F): Ice days (max | 55 | 60 | 1978 | 25 |
| 0 C (32 F): Frost days (min | 55 | 155 | 1976 | 74 |
| -10 C (14 F): Days with min | 55 | 54 | 1978 | 27 |
| -20 C (-4 F): Days with min | 43 | 18 | 1977 | 10 |
| -30 C (-22 F): Days with min | 3 | 2 | 1994 | 2 |
| 20 C (68 F): Tropical nights (min | 55 | 47 | 2018 | 23 |
| 25 C (77 F): Days with min | 2 | 1 | 2011 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 57 | 51 | 1990 | 44 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 57 | 18 | 1990 | 15 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 44 | 5 | 2003 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 1 | 1969 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 27 | 4 | 1979 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1996 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.
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).