Ridgefield Threshold Days by Year (USC00287545)

16 fixed thresholds counted per year at Ridgefield (USC00287545): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ridgefield Thresholds

Ridgefield: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 1959 with 70.
Ridgefield: days with a maximum temperature at or above 90 F (32.2 C) in 40 years, most in 1944 with 40.
Ridgefield: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 1936 with 38.
Ridgefield: nights with a minimum temperature at or below 0 C (32 F) in 40 years, most in 1917 with 153.
16 fixed thresholds have at least one qualifying day at Ridgefield.

Days at or above 30 C (86 F)

40 years with a qualifying day

Days per year at Ridgefield with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 70 in 1959.

Days at or above 30 C (86 F) per year at Ridgefield
Year	Days	Decade average
1917	23	27
1918	29	27
1919	29	27
1920	14	26.1
1921	30	26.1
1922	25	26.1
1926	19	26.1
1927	17	26.1
1928	32	26.1
1929	46	26.1
1930	52	42.1
1931	50	42.1
1932	52	42.1
1933	32	42.1
1934	39	42.1
1935	36	42.1
1936	39	42.1
1937	39	42.1
1938	33	42.1
1939	49	42.1
1940	25	47.1
1941	47	47.1
1942	41	47.1
1943	59	47.1
1944	67	47.1
1945	45	47.1
1946	41	47.1
1947	54	47.1
1948	41	47.1
1949	51	47.1
1950	30	47.2
1951	35	47.2
1952	54	47.2
1953	53	47.2
1954	44	47.2
1955	51	47.2
1956	43	47.2
1957	53	47.2
1958	39	47.2
1959	70	47.2

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

First to last qualifying date each year at Ridgefield
Year	First date	Last date
1917	1917-06-22	1917-08-29
1918	1918-05-06	1918-08-26
1919	1919-05-05	1919-10-03
1920	1920-06-02	1920-08-17
1921	1921-05-21	1921-09-30
1922	1922-04-10	1922-10-05
1926	1926-06-30	1926-09-25
1927	1927-04-20	1927-10-02
1928	1928-06-14	1928-10-12
1929	1929-04-07	1929-09-10
1930	1930-05-02	1930-09-26
1931	1931-05-28	1931-10-08
1932	1932-05-16	1932-09-23
1933	1933-05-20	1933-09-27
1934	1934-05-05	1934-09-10
1935	1935-05-27	1935-08-26
1936	1936-05-08	1936-09-12
1937	1937-05-22	1937-09-04
1938	1938-04-20	1938-10-17
1939	1939-04-25	1939-10-10
1940	1940-06-04	1940-09-21
1941	1941-04-15	1941-10-06
1942	1942-04-26	1942-09-17
1943	1943-05-07	1943-09-16
1944	1944-05-04	1944-10-07
1945	1945-03-28	1945-09-29
1946	1946-05-25	1946-10-06
1947	1947-05-13	1947-09-19
1948	1948-05-10	1948-09-18
1949	1949-05-05	1949-10-11
1950	1950-06-06	1950-09-01
1951	1951-05-16	1951-09-13
1952	1952-06-06	1952-09-13
1953	1953-05-10	1953-09-05
1954	1954-05-29	1954-10-13
1955	1955-05-05	1955-08-30
1956	1956-05-13	1956-09-14
1957	1957-05-09	1957-09-22
1958	1958-06-01	1958-09-26
1959	1959-05-12	1959-10-06

Every Fixed Threshold

Fixed thresholds at Ridgefield
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	40	70	1959	70
35 C (95 F): Days	33	16	1955	5
90 F (32.2 C): Days	40	40	1944	35
100 F (37.8 C): Days	15	4	1953	1
0 C (32 F): Ice days (max	40	38	1936	17
0 C (32 F): Frost days (min	40	153	1917	112
-10 C (14 F): Days with min	40	38	1934	13
-20 C (-4 F): Days with min	11	5	1918	1
20 C (68 F): Tropical nights (min	40	45	1955	39
25 C (77 F): Days with min	2	2	1952	2
10 mm (0.39 in): Days with 10 mm or more rain	40	60	1945	40
25 mm (0.98 in): Days with 25 mm or more rain	40	20	1958	9
50 mm (1.97 in): Days with 50 mm or more rain	34	7	1936	1
100 mm (3.94 in): Days with 100 mm or more rain	9	1	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	11	6	1958	2
25 cm (9.8 in): Days with 25 cm or more snowfall	4	2	1958	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

Data for Ridgefield 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).

Ridgefield Threshold Days by Year (USC00287545)

Key Facts for Ridgefield Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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