Brighton Dam Threshold Days by Year (USC00181125)
18 fixed thresholds counted per year at Brighton Dam (USC00181125): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Brighton Dam Thresholds
- Brighton Dam: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1989 with 59.
- Brighton Dam: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1979 with 21.
- Brighton Dam: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1983 with 6.
- Brighton Dam: days with 10 cm (3.9 in) or more of snowfall in 28 years, most in 1987 with 5.
- 18 fixed thresholds have at least one qualifying day at Brighton Dam.
Days at or above 30 C (86 F)
9 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1949 | 52 | 52 |
| 1950 | 47 | 60.8 |
| 1951 | 65 | 60.8 |
| 1952 | 60 | 60.8 |
| 1953 | 76 | 60.8 |
| 1954 | 56 | 60.8 |
| 2014 | 23 | 40 |
| 2015 | 43 | 40 |
| 2016 | 54 | 40 |
| Year | First date | Last date |
|---|---|---|
| 1949 | 1949-05-04 | 1949-10-10 |
| 1950 | 1950-04-19 | 1950-09-03 |
| 1951 | 1951-04-29 | 1951-10-06 |
| 1952 | 1952-06-02 | 1952-09-14 |
| 1953 | 1953-04-25 | 1953-09-29 |
| 1954 | 1954-05-02 | 1954-10-14 |
| 2014 | 2014-05-13 | 2014-09-07 |
| 2015 | 2015-05-19 | 2015-09-10 |
| 2016 | 2016-05-28 | 2016-09-24 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 9 | 76 | 1953 | 54 |
| 35 C (95 F): Days | 6 | 20 | 1953 | 1 |
| 90 F (32.2 C): Days | 9 | 45 | 1953 | 23 |
| 100 F (37.8 C): Days | 3 | 2 | 1954 | 2 |
| 0 C (32 F): Ice days (max | 7 | 24 | 2014 | 10 |
| 0 C (32 F): Frost days (min | 9 | 128 | 1954 | 99 |
| -10 C (14 F): Days with min | 9 | 27 | 2015 | 13 |
| -20 C (-4 F): Days with min | 1 | 1 | 1951 | 1 |
| 20 C (68 F): Tropical nights (min | 9 | 43 | 2016 | 43 |
| 25 C (77 F): Days with min | 1 | 3 | 2016 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 48 | 59 | 1989 | 37 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 48 | 21 | 1979 | 14 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 43 | 6 | 1983 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 7 | 1 | 1956 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 0 | n/a | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 28 | 5 | 1987 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 1 | 1979 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 2 | 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 1949.
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).