Forest Threshold Days by Year (CA006122450)

17 fixed thresholds counted per year at Forest (CA006122450): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Forest Thresholds

Forest: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1955 with 50.
Forest: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1926 with 91.
Forest: days with a maximum temperature at or above 90 F (32.2 C) in 37 years, most in 1955 with 32.
Forest: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1940 with 42.
17 fixed thresholds have at least one qualifying day at Forest.

Days at or above 30 C (86 F)

39 years with a qualifying day

Days per year at Forest with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 50 in 1955.

Days at or above 30 C (86 F) per year at Forest
Year	Days	Decade average
1925	26	15.2
1926	9	15.2
1927	11	15.2
1928	10	15.2
1929	20	15.2
1930	24	26.4
1931	35	26.4
1932	11	26.4
1933	32	26.4
1934	32	26.4
1935	22	26.4
1936	34	26.4
1937	24	26.4
1938	14	26.4
1939	36	26.4
1940	28	27.7
1941	42	27.7
1942	23	27.7
1943	20	27.7
1944	35	27.7
1945	15	27.7
1946	18	27.7
1947	22	27.7
1948	28	27.7
1949	46	27.7
1950	23	25.9
1951	19	25.9
1952	39	25.9
1953	29	25.9
1955	50	25.9
1956	12	25.9
1957	18	25.9
1958	11	25.9
1959	32	25.9
1960	10	15.2
1961	12	15.2
1962	14	15.2
1963	19	15.2
1964	21	15.2

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

First to last qualifying date each year at Forest
Year	First date	Last date
1925	1925-04-24	1925-08-31
1926	1926-06-29	1926-08-28
1927	1927-06-29	1927-09-15
1928	1928-07-07	1928-08-28
1929	1929-05-29	1929-09-05
1930	1930-06-04	1930-09-12
1931	1931-05-28	1931-09-21
1932	1932-07-13	1932-08-31
1933	1933-05-24	1933-09-08
1934	1934-05-04	1934-08-18
1935	1935-07-04	1935-09-25
1936	1936-05-07	1936-09-23
1937	1937-05-31	1937-09-03
1938	1938-06-22	1938-07-30
1939	1939-05-06	1939-09-16
1940	1940-06-03	1940-09-20
1941	1941-04-13	1941-10-04
1942	1942-04-26	1942-09-18
1943	1943-06-04	1943-09-01
1944	1944-05-26	1944-08-21
1945	1945-06-23	1945-09-07
1946	1946-06-24	1946-09-28
1947	1947-06-10	1947-08-25
1948	1948-06-03	1948-09-19
1949	1949-05-04	1949-09-04
1950	1950-06-07	1950-09-09
1951	1951-05-15	1951-10-05
1952	1952-06-06	1952-09-14
1953	1953-06-05	1953-09-04
1955	1955-05-03	1955-09-19
1956	1956-05-30	1956-08-31
1957	1957-06-16	1957-09-02
1958	1958-06-30	1958-08-29
1959	1959-05-06	1959-09-09
1960	1960-07-12	1960-09-08
1961	1961-06-12	1961-09-13
1962	1962-05-14	1962-09-13
1963	1963-06-26	1963-10-06
1964	1964-05-22	1964-09-10

Every Fixed Threshold

Fixed thresholds at Forest
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	39	50	1955	21
35 C (95 F): Days	23	12	1955	12
90 F (32.2 C): Days	37	32	1955	7
100 F (37.8 C): Days	5	5	1936	1
0 C (32 F): Ice days (max	39	91	1926	57
0 C (32 F): Frost days (min	36	165	1925	134
-10 C (14 F): Days with min	36	53	1950	29
-20 C (-4 F): Days with min	24	14	1936	1
-30 C (-22 F): Days with min	1	1	1934	1
20 C (68 F): Tropical nights (min	35	25	1959	8
25 C (77 F): Days with min	1	1	1953	1
10 mm (0.39 in): Days with 10 mm or more rain	37	42	1940	22
25 mm (0.98 in): Days with 25 mm or more rain	34	12	1953	6
50 mm (1.97 in): Days with 50 mm or more rain	17	2	1949	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	14	1950	2
25 cm (9.8 in): Days with 25 cm or more snowfall	7	2	1953	1
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1937	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1925.

Download the Data

Data for Forest 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).

Forest Threshold Days by Year (CA006122450)

Key Facts for Forest Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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