Delaware Lake Threshold Days by Year (USC00332124)

5 fixed thresholds counted per year at Delaware Lake (USC00332124): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Delaware Lake Thresholds

Delaware Lake: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1950 with 37.
Delaware Lake: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1986 with 11.
Delaware Lake: days with 10 cm (3.9 in) or more of snowfall in 31 years, most in 1979 with 6.
Delaware Lake: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 1964 with 4.
5 fixed thresholds have at least one qualifying day at Delaware Lake.

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

46 years with a qualifying day

Days per year at Delaware Lake with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 37 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Delaware Lake
Year	Days	Decade average
1950	37	32.1
1951	35	32.1
1952	24	32.1
1953	25	32.1
1954	33	32.1
1955	33	32.1
1956	31	32.1
1957	37	32.1
1958	34	32.1
1959	32	32.1
1960	26	28.9
1961	33	28.9
1962	21	28.9
1963	21	28.9
1964	36	28.9
1965	32	28.9
1966	30	28.9
1967	30	28.9
1968	28	28.9
1969	32	28.9
1970	23	28.4
1971	24	28.4
1972	32	28.4
1973	38	28.4
1974	25	28.4
1975	28	28.4
1976	32	28.4
1977	28	28.4
1978	19	28.4
1979	35	28.4
1980	32	30.7
1981	28	30.7
1982	29	30.7
1983	29	30.7
1984	27	30.7
1985	34	30.7
1986	36	30.7
2008	22	21.5
2009	21	21.5
2010	23	32.7
2011	37	32.7
2013	36	32.7
2014	33	32.7
2015	35	32.7
2016	32	32.7
2026	26	26

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

First to last qualifying date each year at Delaware Lake
Year	First date	Last date
1950	1950-01-03	1950-12-26
1951	1951-01-03	1951-12-26
1952	1952-01-17	1952-12-10
1953	1953-01-08	1953-12-22
1954	1954-01-21	1954-12-30
1955	1955-01-06	1955-11-23
1956	1956-01-30	1956-12-09
1957	1957-01-23	1957-12-26
1958	1958-01-25	1958-11-29
1959	1959-01-15	1959-12-13
1960	1960-01-13	1960-12-21
1961	1961-02-26	1961-12-24
1962	1962-01-06	1962-12-06
1963	1963-01-11	1963-11-01
1964	1964-01-02	1964-12-25
1965	1965-01-02	1965-10-22
1966	1966-01-01	1966-12-11
1967	1967-01-27	1967-12-22
1968	1968-03-13	1968-12-28
1969	1969-01-18	1969-12-08
1970	1970-01-29	1970-12-22
1971	1971-01-04	1971-12-31
1972	1972-03-22	1972-12-16
1973	1973-01-04	1973-12-31
1974	1974-01-10	1974-12-01
1975	1975-01-01	1975-12-26
1976	1976-01-03	1976-10-31
1977	1977-03-04	1977-12-25
1978	1978-01-08	1978-12-09
1979	1979-01-01	1979-12-23
1980	1980-03-08	1980-11-28
1981	1981-02-02	1981-12-23
1982	1982-01-22	1982-12-28
1983	1983-04-03	1983-12-04
1984	1984-02-14	1984-12-30
1985	1985-02-13	1985-12-12
1986	1986-01-19	1986-12-03
2008	2008-03-09	2008-12-27
2009	2009-04-03	2009-12-14
2010	2010-01-04	2010-12-13
2011	2011-02-01	2011-12-21
2013	2013-01-14	2013-12-23
2014	2014-01-06	2014-12-29
2015	2015-01-05	2015-12-29
2016	2016-01-11	2016-12-27
2026	2026-02-20	2026-09-21

Every Fixed Threshold

Fixed thresholds at Delaware Lake
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	46	37	1950	26
25 mm (0.98 in): Days with 25 mm or more rain	46	11	1986	9
50 mm (1.97 in): Days with 50 mm or more rain	23	4	1964	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2009	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	6	1979	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

Data for Delaware Lake 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 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Delaware Lake Threshold Days by Year (USC00332124)

Key Facts for Delaware Lake Thresholds

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

Every Fixed Threshold

Download the Data

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