Powhatan Threshold Days by Year (USC00446906)
16 fixed thresholds counted per year at Powhatan (USC00446906): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Powhatan Thresholds
- Powhatan: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 2003 with 55.
- Powhatan: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 2003 with 20.
- Powhatan: days with 50 mm (1.97 in) or more of precipitation in 51 years, most in 1937 with 6.
- Powhatan: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1959 with 90.
- 16 fixed thresholds have at least one qualifying day at Powhatan.
Days at or above 30 C (86 F)
17 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1951 | 72 | 77.3 |
| 1952 | 73 | 77.3 |
| 1953 | 83 | 77.3 |
| 1955 | 71 | 77.3 |
| 1956 | 78 | 77.3 |
| 1957 | 86 | 77.3 |
| 1958 | 65 | 77.3 |
| 1959 | 90 | 77.3 |
| 1960 | 83 | 70 |
| 1961 | 67 | 70 |
| 1962 | 62 | 70 |
| 1963 | 71 | 70 |
| 1964 | 68 | 70 |
| 1965 | 77 | 70 |
| 1966 | 80 | 70 |
| 1967 | 50 | 70 |
| 1968 | 72 | 70 |
| Year | First date | Last date |
|---|---|---|
| 1951 | 1951-04-26 | 1951-10-06 |
| 1952 | 1952-04-20 | 1952-09-30 |
| 1953 | 1953-04-25 | 1953-10-20 |
| 1955 | 1955-05-05 | 1955-09-20 |
| 1956 | 1956-04-30 | 1956-09-24 |
| 1957 | 1957-04-21 | 1957-09-22 |
| 1958 | 1958-04-19 | 1958-09-26 |
| 1959 | 1959-04-08 | 1959-10-11 |
| 1960 | 1960-04-14 | 1960-09-20 |
| 1961 | 1961-04-25 | 1961-09-13 |
| 1962 | 1962-04-22 | 1962-10-12 |
| 1963 | 1963-04-02 | 1963-09-20 |
| 1964 | 1964-04-20 | 1964-09-23 |
| 1965 | 1965-05-02 | 1965-09-23 |
| 1966 | 1966-05-06 | 1966-09-11 |
| 1967 | 1967-04-02 | 1967-08-27 |
| 1968 | 1968-03-21 | 1968-10-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 17 | 90 | 1959 | 72 |
| 35 C (95 F): Days | 16 | 27 | 1953 | 5 |
| 90 F (32.2 C): Days | 17 | 57 | 1953 | 38 |
| 100 F (37.8 C): Days | 6 | 6 | 1953 | 1 |
| 0 C (32 F): Ice days (max | 16 | 12 | 1968 | 12 |
| 0 C (32 F): Frost days (min | 17 | 122 | 1963 | 109 |
| -10 C (14 F): Days with min | 17 | 34 | 1958 | 20 |
| -20 C (-4 F): Days with min | 6 | 3 | 1961 | 1 |
| 20 C (68 F): Tropical nights (min | 17 | 48 | 1959 | 41 |
| 25 C (77 F): Days with min | 3 | 2 | 1965 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 64 | 55 | 2003 | 34 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 64 | 20 | 2003 | 11 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 51 | 6 | 1937 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 10 | 1 | 1928 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 17 | 5 | 1966 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 1 | 1962 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.
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).