Duncan Forestry Threshold Days by Year (CA001012570)
12 fixed thresholds counted per year at Duncan Forestry (CA001012570): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Duncan Forestry Thresholds
- Duncan Forestry: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1970 with 115.
- Duncan Forestry: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1983 with 49.
- Duncan Forestry: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1980 with 13.
- Duncan Forestry: days with a maximum temperature at or above 30 C (86 F) in 22 years, most in 1961 with 16.
- 12 fixed thresholds have at least one qualifying day at Duncan Forestry.
Days at or above 30 C (86 F)
22 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1959 | 8 | 8 |
| 1960 | 11 | 7.1 |
| 1961 | 16 | 7.1 |
| 1963 | 5 | 7.1 |
| 1965 | 6 | 7.1 |
| 1966 | 1 | 7.1 |
| 1967 | 10 | 7.1 |
| 1968 | 3 | 7.1 |
| 1969 | 5 | 7.1 |
| 1970 | 3 | 7.1 |
| 1971 | 10 | 7.1 |
| 1972 | 10 | 7.1 |
| 1973 | 6 | 7.1 |
| 1974 | 8 | 7.1 |
| 1975 | 1 | 7.1 |
| 1977 | 14 | 7.1 |
| 1978 | 9 | 7.1 |
| 1979 | 3 | 7.1 |
| 1980 | 2 | 5.5 |
| 1981 | 8 | 5.5 |
| 1982 | 9 | 5.5 |
| 1983 | 3 | 5.5 |
| Year | First date | Last date |
|---|---|---|
| 1959 | 1959-07-16 | 1959-07-31 |
| 1960 | 1960-07-06 | 1960-08-09 |
| 1961 | 1961-06-01 | 1961-08-19 |
| 1963 | 1963-05-20 | 1963-09-09 |
| 1965 | 1965-07-24 | 1965-08-18 |
| 1966 | 1966-08-23 | 1966-08-23 |
| 1967 | 1967-06-18 | 1967-09-16 |
| 1968 | 1968-07-02 | 1968-07-31 |
| 1969 | 1969-06-08 | 1969-06-18 |
| 1970 | 1970-06-01 | 1970-07-15 |
| 1971 | 1971-07-17 | 1971-08-10 |
| 1972 | 1972-05-28 | 1972-09-03 |
| 1973 | 1973-05-14 | 1973-09-05 |
| 1974 | 1974-07-31 | 1974-09-24 |
| 1975 | 1975-07-04 | 1975-07-04 |
| 1977 | 1977-06-17 | 1977-08-17 |
| 1978 | 1978-06-03 | 1978-08-08 |
| 1979 | 1979-07-16 | 1979-07-18 |
| 1980 | 1980-07-21 | 1980-08-10 |
| 1981 | 1981-08-06 | 1981-09-08 |
| 1982 | 1982-06-17 | 1982-08-24 |
| 1983 | 1983-05-28 | 1983-07-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 22 | 16 | 1961 | 3 |
| 35 C (95 F): Days | 5 | 2 | 1981 | 2 |
| 90 F (32.2 C): Days | 16 | 6 | 1977 | 2 |
| 0 C (32 F): Ice days (max | 20 | 15 | 1972 | 5 |
| 0 C (32 F): Frost days (min | 25 | 115 | 1970 | 98 |
| -10 C (14 F): Days with min | 15 | 9 | 1972 | 3 |
| -20 C (-4 F): Days with min | 3 | 1 | 1968 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 25 | 49 | 1983 | 49 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 25 | 13 | 1980 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 14 | 2 | 1960 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 15 | 7 | 1971 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 4 | 2 | 1968 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.
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 (2026-10-17).