Somerset Dam Threshold Days by Year
13 fixed thresholds counted per year at Somerset Dam (ASN00040189): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Somerset Dam Thresholds
- Somerset Dam: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 2022 with 44.
- Somerset Dam: days with 25 mm (0.98 in) or more of precipitation in 85 years, most in 1983 with 19.
- Somerset Dam: days with 50 mm (1.97 in) or more of precipitation in 78 years, most in 1988 with 8.
- Somerset Dam: days with 100 mm (3.94 in) or more of precipitation in 32 years, most in 1968 with 3.
- 13 fixed thresholds have at least one qualifying day at Somerset Dam.
Days at or above 30 C (86 F)
7 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1957 | 109 | 108.5 |
| 1958 | 108 | 108.5 |
| 1964 | 79 | 75.2 |
| 1965 | 84 | 75.2 |
| 1967 | 57 | 75.2 |
| 1968 | 82 | 75.2 |
| 1969 | 74 | 75.2 |
| Year | First date | Last date |
|---|---|---|
| 1957 | 1957-01-01 | 1957-12-31 |
| 1958 | 1958-01-01 | 1958-12-30 |
| 1964 | 1964-01-01 | 1964-12-29 |
| 1965 | 1965-01-02 | 1965-12-31 |
| 1967 | 1967-01-01 | 1967-12-31 |
| 1968 | 1968-01-01 | 1968-12-30 |
| 1969 | 1969-01-04 | 1969-12-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 7 | 109 | 1957 | 74 |
| 35 C (95 F): Days | 7 | 24 | 1957 | 16 |
| 40 C (104 F): Days | 3 | 3 | 1958 | 3 |
| 90 F (32.2 C): Days | 7 | 71 | 1957 | 45 |
| 100 F (37.8 C): Days | 7 | 9 | 1957 | 5 |
| 0 C (32 F): Frost days (min | 5 | 3 | 1965 | 2 |
| 20 C (68 F): Tropical nights (min | 7 | 62 | 1958 | 53 |
| 25 C (77 F): Days with min | 5 | 4 | 1957 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 85 | 44 | 2022 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 85 | 19 | 1983 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 78 | 8 | 1988 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 32 | 3 | 1968 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 3 | 2 | 2022 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-16).