Washington 3 SSW Threshold Days by Year
15 fixed thresholds counted per year at Washington 3 SSW (USC00448902): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Washington 3 SSW Thresholds
- Washington 3 SSW: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1972 with 46.
- Washington 3 SSW: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1952 with 16.
- Washington 3 SSW: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1952 with 7.
- Washington 3 SSW: days with a maximum temperature at or above 30 C (86 F) in 19 years, most in 1959 with 80.
- 15 fixed thresholds have at least one qualifying day at Washington 3 SSW.
Days at or above 30 C (86 F)
19 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1956 | 73 | 70.5 |
| 1957 | 79 | 70.5 |
| 1958 | 50 | 70.5 |
| 1959 | 80 | 70.5 |
| 1960 | 55 | 63.1 |
| 1961 | 69 | 63.1 |
| 1962 | 65 | 63.1 |
| 1963 | 62 | 63.1 |
| 1966 | 80 | 63.1 |
| 1967 | 46 | 63.1 |
| 1968 | 63 | 63.1 |
| 1969 | 65 | 63.1 |
| 1970 | 68 | 45.9 |
| 1971 | 53 | 45.9 |
| 1972 | 34 | 45.9 |
| 1974 | 32 | 45.9 |
| 1975 | 36 | 45.9 |
| 1976 | 37 | 45.9 |
| 1977 | 61 | 45.9 |
| Year | First date | Last date |
|---|---|---|
| 1956 | 1956-04-29 | 1956-09-18 |
| 1957 | 1957-04-22 | 1957-09-23 |
| 1958 | 1958-04-20 | 1958-10-11 |
| 1959 | 1959-04-09 | 1959-10-07 |
| 1960 | 1960-04-15 | 1960-09-10 |
| 1961 | 1961-04-26 | 1961-09-26 |
| 1962 | 1962-04-23 | 1962-10-13 |
| 1963 | 1963-03-31 | 1963-10-08 |
| 1966 | 1966-05-07 | 1966-09-07 |
| 1967 | 1967-04-03 | 1967-10-06 |
| 1968 | 1968-05-04 | 1968-10-03 |
| 1969 | 1969-04-28 | 1969-10-21 |
| 1970 | 1970-05-10 | 1970-09-27 |
| 1971 | 1971-05-19 | 1971-09-12 |
| 1972 | 1972-04-20 | 1972-08-28 |
| 1974 | 1974-04-30 | 1974-09-14 |
| 1975 | 1975-05-22 | 1975-08-31 |
| 1976 | 1976-04-17 | 1976-09-14 |
| 1977 | 1977-04-14 | 1977-09-20 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 19 | 80 | 1959 | 61 |
| 35 C (95 F): Days | 13 | 17 | 1966 | 6 |
| 90 F (32.2 C): Days | 19 | 57 | 1966 | 27 |
| 100 F (37.8 C): Days | 3 | 4 | 1966 | 2 |
| 0 C (32 F): Ice days (max | 19 | 27 | 1977 | 27 |
| 0 C (32 F): Frost days (min | 18 | 149 | 1976 | 112 |
| -10 C (14 F): Days with min | 18 | 42 | 1963 | 41 |
| -20 C (-4 F): Days with min | 8 | 4 | 1960 | 1 |
| 20 C (68 F): Tropical nights (min | 17 | 16 | 1959 | 14 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 32 | 46 | 1972 | 44 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 32 | 16 | 1952 | 18 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 26 | 7 | 1952 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1952 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 4 | 1 | 1954 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 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 1956.
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 (2025-12-31).