Deerfield 1 S Threshold Days by Year (USC00442315)

7 fixed thresholds counted per year at Deerfield 1 S (USC00442315): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Deerfield 1 S Thresholds

Deerfield 1 S: days with 10 mm (0.39 in) or more of precipitation in 34 years, most in 1979 with 45.
Deerfield 1 S: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1972 with 17.
Deerfield 1 S: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1979 with 4.
Deerfield 1 S: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 1962 with 7.
7 fixed thresholds have at least one qualifying day at Deerfield 1 S.

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

34 years with a qualifying day

Days per year at Deerfield 1 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1979.

Days with 10 mm (0.39 in) or more of precipitation per year at Deerfield 1 S
Year	Days	Decade average
1930	15	31.2
1933	34	31.2
1937	37	31.2
1938	35	31.2
1939	35	31.2
1943	34	34.3
1945	36	34.3
1946	32	34.3
1947	35	34.3
1956	29	34.8
1957	40	34.8
1958	33	34.8
1959	37	34.8
1960	34	32.7
1961	36	32.7
1962	40	32.7
1963	31	32.7
1964	25	32.7
1965	35	32.7
1966	30	32.7
1967	31	32.7
1968	33	32.7
1969	32	32.7
1970	28	36.1
1971	35	36.1
1972	43	36.1
1973	43	36.1
1974	37	36.1
1975	39	36.1
1976	31	36.1
1977	28	36.1
1978	32	36.1
1979	45	36.1
1980	31	31

For each year, a bar from the first to the last day at Deerfield 1 S meeting 10 mm (0.39 in).

First to last qualifying date each year at Deerfield 1 S
Year	First date	Last date
1930	1930-01-18	1930-12-28
1933	1933-01-09	1933-12-26
1937	1937-01-02	1937-12-27
1938	1938-01-06	1938-12-26
1939	1939-01-17	1939-12-20
1943	1943-01-27	1943-12-29
1945	1945-01-02	1945-12-25
1946	1946-01-07	1946-12-21
1947	1947-01-01	1947-12-13
1956	1956-01-20	1956-12-23
1957	1957-01-23	1957-12-26
1958	1958-01-14	1958-12-29
1959	1959-01-01	1959-12-19
1960	1960-01-03	1960-12-21
1961	1961-01-01	1961-12-28
1962	1962-01-06	1962-12-30
1963	1963-01-12	1963-12-24
1964	1964-01-07	1964-12-12
1965	1965-01-02	1965-11-22
1966	1966-01-02	1966-12-29
1967	1967-01-28	1967-12-29
1968	1968-01-01	1968-12-29
1969	1969-01-19	1969-12-31
1970	1970-02-02	1970-12-22
1971	1971-01-01	1971-12-07
1972	1972-01-02	1972-12-22
1973	1973-01-04	1973-12-27
1974	1974-01-10	1974-12-16
1975	1975-01-07	1975-12-31
1976	1976-01-01	1976-12-08
1977	1977-02-25	1977-12-18
1978	1978-01-09	1978-12-25
1979	1979-01-02	1979-11-26
1980	1980-01-05	1980-11-25

Every Fixed Threshold

Fixed thresholds at Deerfield 1 S
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	34	45	1979	31
25 mm (0.98 in): Days with 25 mm or more rain	34	17	1972	8
50 mm (1.97 in): Days with 50 mm or more rain	25	4	1979	4
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1961	1
10 cm (3.9 in): Days with 10 cm or more snowfall	18	7	1962	4
25 cm (9.8 in): Days with 25 cm or more snowfall	5	3	1966	2
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1930.

Download the Data

Data for Deerfield 1 S 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Deerfield 1 S Threshold Days by Year (USC00442315)

Key Facts for Deerfield 1 S Thresholds

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

Every Fixed Threshold

Download the Data

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