Cummington Hill Threshold Days by Year (USC00191774)
14 fixed thresholds counted per year at Cummington Hill (USC00191774): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Cummington Hill Thresholds
- Cummington Hill: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1979 with 58.
- Cummington Hill: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1975 with 21.
- Cummington Hill: days with 10 cm (3.9 in) or more of snowfall in 30 years, most in 1977 with 13.
- Cummington Hill: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1972 with 182.
- 14 fixed thresholds have at least one qualifying day at Cummington Hill.
Days at or above 30 C (86 F)
27 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 9 | 5.8 |
| 1965 | 9 | 5.8 |
| 1966 | 4 | 5.8 |
| 1967 | 4 | 5.8 |
| 1968 | 5 | 5.8 |
| 1969 | 4 | 5.8 |
| 1970 | 9 | 5.5 |
| 1971 | 2 | 5.5 |
| 1972 | 3 | 5.5 |
| 1973 | 11 | 5.5 |
| 1974 | 2 | 5.5 |
| 1975 | 7 | 5.5 |
| 1976 | 3 | 5.5 |
| 1977 | 8 | 5.5 |
| 1978 | 4 | 5.5 |
| 1979 | 6 | 5.5 |
| 1980 | 10 | 4.9 |
| 1981 | 4 | 4.9 |
| 1982 | 3 | 4.9 |
| 1985 | 2 | 4.9 |
| 1986 | 2 | 4.9 |
| 1987 | 8 | 4.9 |
| 1989 | 5 | 4.9 |
| 1990 | 5 | 6.3 |
| 1991 | 12 | 6.3 |
| 1992 | 1 | 6.3 |
| 1993 | 7 | 6.3 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-05-24 | 1964-07-29 |
| 1965 | 1965-06-07 | 1965-09-11 |
| 1966 | 1966-06-28 | 1966-07-14 |
| 1967 | 1967-06-11 | 1967-08-19 |
| 1968 | 1968-06-07 | 1968-08-26 |
| 1969 | 1969-06-28 | 1969-07-18 |
| 1970 | 1970-07-26 | 1970-08-17 |
| 1971 | 1971-06-08 | 1971-07-01 |
| 1972 | 1972-05-24 | 1972-08-24 |
| 1973 | 1973-06-12 | 1973-09-05 |
| 1974 | 1974-04-30 | 1974-06-11 |
| 1975 | 1975-05-21 | 1975-08-04 |
| 1976 | 1976-04-19 | 1976-08-23 |
| 1977 | 1977-07-15 | 1977-08-30 |
| 1978 | 1978-05-31 | 1978-07-24 |
| 1979 | 1979-05-10 | 1979-08-05 |
| 1980 | 1980-06-26 | 1980-09-03 |
| 1981 | 1981-06-17 | 1981-07-13 |
| 1982 | 1982-07-18 | 1982-07-20 |
| 1985 | 1985-08-15 | 1985-08-16 |
| 1986 | 1986-07-07 | 1986-07-08 |
| 1987 | 1987-05-31 | 1987-08-18 |
| 1989 | 1989-07-26 | 1989-09-11 |
| 1990 | 1990-04-29 | 1990-08-05 |
| 1991 | 1991-06-29 | 1991-08-31 |
| 1992 | 1992-05-23 | 1992-05-23 |
| 1993 | 1993-07-07 | 1993-08-28 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 27 | 12 | 1991 | 7 |
| 90 F (32.2 C): Days | 8 | 3 | 1975 | 1 |
| 0 C (32 F): Ice days (max | 28 | 78 | 1982 | 60 |
| 0 C (32 F): Frost days (min | 29 | 182 | 1972 | 150 |
| -10 C (14 F): Days with min | 29 | 76 | 1976 | 59 |
| -20 C (-4 F): Days with min | 28 | 12 | 1968 | 7 |
| 20 C (68 F): Tropical nights (min | 21 | 5 | 1973 | 5 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 30 | 58 | 1979 | 39 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 30 | 21 | 1975 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 25 | 5 | 1986 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1978 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 30 | 13 | 1977 | 8 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 20 | 3 | 1969 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 3 | 1 | 1986 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.
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).