Downsville Dam Threshold Days by Year (USC00302169)
15 fixed thresholds counted per year at Downsville Dam (USC00302169): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Downsville Dam Thresholds
- Downsville Dam: days with a maximum temperature at or above 30 C (86 F) in 37 years, most in 2010 with 31.
- Downsville Dam: days with a maximum temperature at or below 0 C (32 F) in 37 years, most in 1969 with 71.
- Downsville Dam: nights with a minimum temperature at or below 0 C (32 F) in 37 years, most in 1976 with 190.
- Downsville Dam: nights with a minimum temperature at or below -10 C (14 F) in 37 years, most in 1976 with 75.
- 15 fixed thresholds have at least one qualifying day at Downsville Dam.
Days at or above 30 C (86 F)
37 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1960 | 2 | 11.3 |
| 1961 | 12 | 11.3 |
| 1962 | 11 | 11.3 |
| 1964 | 20 | 11.3 |
| 1965 | 15 | 11.3 |
| 1966 | 17 | 11.3 |
| 1967 | 6 | 11.3 |
| 1968 | 11 | 11.3 |
| 1969 | 8 | 11.3 |
| 1970 | 7 | 8.9 |
| 1971 | 6 | 8.9 |
| 1972 | 9 | 8.9 |
| 1973 | 19 | 8.9 |
| 1974 | 5 | 8.9 |
| 1975 | 12 | 8.9 |
| 1976 | 3 | 8.9 |
| 1977 | 10 | 8.9 |
| 1978 | 9 | 8.9 |
| 1979 | 9 | 8.9 |
| 1980 | 14 | 15 |
| 1982 | 9 | 15 |
| 1983 | 29 | 15 |
| 1984 | 8 | 15 |
| 2010 | 31 | 18.9 |
| 2011 | 17 | 18.9 |
| 2012 | 21 | 18.9 |
| 2013 | 20 | 18.9 |
| 2014 | 7 | 18.9 |
| 2015 | 17 | 18.9 |
| 2016 | 20 | 18.9 |
| 2019 | 18 | 18.9 |
| 2020 | 18 | 19 |
| 2021 | 19 | 19 |
| 2022 | 21 | 19 |
| 2023 | 13 | 19 |
| 2024 | 20 | 19 |
| 2025 | 23 | 19 |
| Year | First date | Last date |
|---|---|---|
| 1960 | 1960-08-29 | 1960-08-30 |
| 1961 | 1961-06-13 | 1961-09-24 |
| 1962 | 1962-05-18 | 1962-09-01 |
| 1964 | 1964-05-24 | 1964-09-12 |
| 1965 | 1965-05-27 | 1965-09-23 |
| 1966 | 1966-06-25 | 1966-09-03 |
| 1967 | 1967-06-10 | 1967-06-17 |
| 1968 | 1968-06-07 | 1968-08-26 |
| 1969 | 1969-05-30 | 1969-09-02 |
| 1970 | 1970-07-25 | 1970-09-25 |
| 1971 | 1971-05-20 | 1971-08-19 |
| 1972 | 1972-05-25 | 1972-08-26 |
| 1973 | 1973-06-06 | 1973-09-06 |
| 1974 | 1974-06-11 | 1974-07-29 |
| 1975 | 1975-05-21 | 1975-08-27 |
| 1976 | 1976-04-19 | 1976-08-22 |
| 1977 | 1977-07-14 | 1977-08-30 |
| 1978 | 1978-05-30 | 1978-08-16 |
| 1979 | 1979-05-10 | 1979-08-06 |
| 1980 | 1980-05-25 | 1980-09-03 |
| 1982 | 1982-07-02 | 1982-07-27 |
| 1983 | 1983-06-14 | 1983-09-21 |
| 1984 | 1984-06-08 | 1984-07-24 |
| 2010 | 2010-05-01 | 2010-09-25 |
| 2011 | 2011-05-27 | 2011-08-02 |
| 2012 | 2012-04-17 | 2012-09-04 |
| 2013 | 2013-05-22 | 2013-09-12 |
| 2014 | 2014-06-18 | 2014-09-03 |
| 2015 | 2015-05-09 | 2015-09-10 |
| 2016 | 2016-05-28 | 2016-09-09 |
| 2019 | 2019-05-20 | 2019-08-19 |
| 2020 | 2020-05-26 | 2020-08-24 |
| 2021 | 2021-05-21 | 2021-08-26 |
| 2022 | 2022-05-21 | 2022-08-31 |
| 2023 | 2023-04-13 | 2023-09-07 |
| 2024 | 2024-05-21 | 2024-08-02 |
| 2025 | 2025-06-04 | 2025-08-16 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 37 | 31 | 2010 | 23 |
| 35 C (95 F): Days | 4 | 1 | 1974 | 1 |
| 90 F (32.2 C): Days | 26 | 8 | 2012 | 5 |
| 0 C (32 F): Ice days (max | 37 | 71 | 1969 | 36 |
| 0 C (32 F): Frost days (min | 37 | 190 | 1976 | 100 |
| -10 C (14 F): Days with min | 37 | 75 | 1976 | 29 |
| -20 C (-4 F): Days with min | 35 | 21 | 2014 | 3 |
| -30 C (-22 F): Days with min | 1 | 1 | 1971 | 1 |
| 20 C (68 F): Tropical nights (min | 22 | 4 | 1961 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 27 | 46 | 1972 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 27 | 15 | 1977 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 18 | 4 | 1980 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1983 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 23 | 8 | 1969 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 7 | 2 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.
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 (2025-12-31).