Dryden Threshold Days by Year (CA006032117)

18 fixed thresholds counted per year at Dryden (CA006032117): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dryden Thresholds

Dryden: days with a maximum temperature at or below 0 C (32 F) in 65 years, most in 1936 with 144.
Dryden: nights with a minimum temperature at or below 0 C (32 F) in 65 years, most in 1917 with 231.
Dryden: nights with a minimum temperature at or below -10 C (14 F) in 65 years, most in 1950 with 140.
Dryden: nights with a minimum temperature at or below -20 C (-4 F) in 65 years, most in 1950 with 93.
18 fixed thresholds have at least one qualifying day at Dryden.

Days at or above 30 C (86 F)

56 years with a qualifying day

Days per year at Dryden with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 33 in 1921.

Days at or above 30 C (86 F) per year at Dryden
Year	Days	Decade average
1914	7	6.2
1915	2	6.2
1916	8	6.2
1917	4	6.2
1919	10	6.2
1921	33	14
1923	5	14
1929	4	14
1930	3	6.4
1931	12	6.4
1932	4	6.4
1933	9	6.4
1934	4	6.4
1935	3	6.4
1936	16	6.4
1937	6	6.4
1939	1	6.4
1940	10	9.2
1941	18	9.2
1942	2	9.2
1943	6	9.2
1944	4	9.2
1945	6	9.2
1946	11	9.2
1947	17	9.2
1948	7	9.2
1949	11	9.2
1950	1	6.8
1951	3	6.8
1952	5	6.8
1953	12	6.8
1954	6	6.8
1955	19	6.8
1956	4	6.8
1957	7	6.8
1958	2	6.8
1959	9	6.8
1960	4	6.6
1961	12	6.6
1962	2	6.6
1963	11	6.6
1964	10	6.6
1965	3	6.6
1966	11	6.6
1967	3	6.6
1969	3	6.6
1970	12	5.7
1972	5	5.7
1974	5	5.7
1975	7	5.7
1976	4	5.7
1978	3	5.7
1979	4	5.7
1980	10	8.3
1981	3	8.3
1983	12	8.3

For each year, a bar from the first to the last day at Dryden meeting 30 C (86 F).

First to last qualifying date each year at Dryden
Year	First date	Last date
1914	1914-07-05	1914-08-05
1915	1915-08-13	1915-08-14
1916	1916-07-06	1916-08-17
1917	1917-07-22	1917-07-30
1919	1919-05-28	1919-07-17
1921	1921-06-17	1921-09-01
1923	1923-06-02	1923-07-23
1929	1929-07-26	1929-08-24
1930	1930-05-22	1930-08-26
1931	1931-06-17	1931-09-12
1932	1932-06-06	1932-06-16
1933	1933-06-02	1933-07-28
1934	1934-05-31	1934-07-19
1935	1935-07-04	1935-08-15
1936	1936-06-24	1936-08-08
1937	1937-05-29	1937-08-06
1939	1939-06-06	1939-06-06
1940	1940-07-05	1940-08-14
1941	1941-05-18	1941-08-07
1942	1942-07-17	1942-08-20
1943	1943-07-08	1943-07-31
1944	1944-05-30	1944-07-31
1945	1945-06-22	1945-08-19
1946	1946-06-21	1946-08-07
1947	1947-07-03	1947-08-23
1948	1948-06-02	1948-08-24
1949	1949-06-30	1949-08-10
1950	1950-07-28	1950-07-28
1951	1951-07-24	1951-07-29
1952	1952-04-30	1952-08-26
1953	1953-05-07	1953-08-31
1954	1954-07-20	1954-07-28
1955	1955-06-16	1955-08-19
1956	1956-06-10	1956-06-21
1957	1957-04-30	1957-07-31
1958	1958-07-23	1958-08-01
1959	1959-06-04	1959-08-05
1960	1960-07-08	1960-08-01
1961	1961-06-28	1961-08-28
1962	1962-06-27	1962-06-28
1963	1963-06-24	1963-07-25
1964	1964-05-21	1964-08-02
1965	1965-08-11	1965-08-13
1966	1966-06-01	1966-08-26
1967	1967-07-10	1967-07-21
1969	1969-05-27	1969-07-12
1970	1970-06-06	1970-08-14
1972	1972-05-16	1972-05-26
1974	1974-06-28	1974-07-20
1975	1975-07-15	1975-07-31
1976	1976-06-06	1976-09-07
1978	1978-06-29	1978-08-12
1979	1979-07-09	1979-07-12
1980	1980-05-03	1980-07-13
1981	1981-07-05	1981-07-07
1983	1983-07-10	1983-09-02

Every Fixed Threshold

Fixed thresholds at Dryden
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	56	33	1921	12
35 C (95 F): Days	6	6	1936	1
90 F (32.2 C): Days	37	20	1921	2
100 F (37.8 C): Days	1	2	1936	2
0 C (32 F): Ice days (max	65	144	1936	116
0 C (32 F): Frost days (min	65	231	1917	197
-10 C (14 F): Days with min	65	140	1950	91
-20 C (-4 F): Days with min	65	93	1950	48
-30 C (-22 F): Days with min	65	46	1929	14
-40 C (-40 F): Days with min	36	12	1933	1
20 C (68 F): Tropical nights (min	35	12	1936	3
25 C (77 F): Days with min	2	1	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	65	29	1941	15
25 mm (0.98 in): Days with 25 mm or more rain	62	7	1916	2
50 mm (1.97 in): Days with 50 mm or more rain	15	3	1916	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1916	1
10 cm (3.9 in): Days with 10 cm or more snowfall	64	11	1933	1
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1932	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for Dryden 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Dryden Threshold Days by Year (CA006032117)

Key Facts for Dryden Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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