Chepachet Threshold Days by Year

7 fixed thresholds counted per year at Chepachet (USC00301424): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chepachet Thresholds

Chepachet: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1976 with 49.
Chepachet: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1977 with 16.
Chepachet: days with 10 cm (3.9 in) or more of snowfall in 42 years, most in 1961 with 10.
Chepachet: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1966 with 2.
7 fixed thresholds have at least one qualifying day at Chepachet.

Days with 10 mm (0.39 in) or more of precipitation

42 years with a qualifying day

Days per year at Chepachet with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1976.

Days with 10 mm (0.39 in) or more of precipitation per year at Chepachet
Year	Days	Decade average
1958	38	36.5
1959	35	36.5
1960	33	29.7
1961	30	29.7
1962	27	29.7
1963	29	29.7
1964	24	29.7
1965	25	29.7
1966	33	29.7
1967	26	29.7
1968	42	29.7
1969	28	29.7
1970	34	39
1971	37	39
1972	48	39
1973	38	39
1974	36	39
1975	43	39
1976	49	39
1977	46	39
1978	33	39
1979	26	39
1980	31	32.6
1981	34	32.6
1982	27	32.6
1983	40	32.6
1984	35	32.6
1985	24	32.6
1986	38	32.6
1987	35	32.6
1988	32	32.6
1989	30	32.6
1990	42	32.2
1991	33	32.2
1992	35	32.2
1993	34	32.2
1994	32	32.2
1995	24	32.2
1996	34	32.2
1998	31	32.2
1999	25	32.2
2000	44	44

For each year, a bar from the first to the last day at Chepachet meeting 10 mm (0.39 in).

First to last qualifying date each year at Chepachet
Year	First date	Last date
1958	1958-01-15	1958-12-06
1959	1959-01-22	1959-12-29
1960	1960-01-03	1960-10-25
1961	1961-02-04	1961-11-25
1962	1962-01-07	1962-12-06
1963	1963-01-13	1963-12-09
1964	1964-01-02	1964-12-28
1965	1965-01-03	1965-12-26
1966	1966-01-31	1966-12-29
1967	1967-01-28	1967-12-29
1968	1968-03-17	1968-12-29
1969	1969-01-31	1969-12-27
1970	1970-02-03	1970-12-24
1971	1971-02-08	1971-12-31
1972	1972-02-04	1972-12-22
1973	1973-01-01	1973-12-27
1974	1974-01-22	1974-12-25
1975	1975-01-26	1975-12-31
1976	1976-01-12	1976-12-07
1977	1977-01-11	1977-12-22
1978	1978-01-09	1978-12-25
1979	1979-01-02	1979-11-27
1980	1980-01-15	1980-11-25
1981	1981-02-02	1981-12-23
1982	1982-01-04	1982-12-16
1983	1983-01-11	1983-12-29
1984	1984-02-15	1984-12-30
1985	1985-01-02	1985-12-14
1986	1986-01-20	1986-12-03
1987	1987-01-03	1987-11-30
1988	1988-01-26	1988-12-29
1989	1989-02-21	1989-11-21
1990	1990-01-30	1990-12-31
1991	1991-01-12	1991-12-30
1992	1992-01-15	1992-12-31
1993	1993-01-14	1993-12-22
1994	1994-01-05	1994-12-06
1995	1995-01-21	1995-12-15
1996	1996-01-03	1996-12-14
1998	1998-01-04	1998-12-22
1999	1999-01-04	1999-12-21
2000	2000-01-04	2000-12-31

Every Fixed Threshold

Fixed thresholds at Chepachet
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	42	49	1976	44
25 mm (0.98 in): Days with 25 mm or more rain	42	16	1977	11
50 mm (1.97 in): Days with 50 mm or more rain	24	2	1966	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1999	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	10	1961	9
25 cm (9.8 in): Days with 25 cm or more snowfall	13	3	1978	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1998	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

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Data for Chepachet threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Chepachet Threshold Days by Year

Key Facts for Chepachet Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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