Runyon Threshold Days by Year (USC00287825)

19 fixed thresholds counted per year at Runyon (USC00287825): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Runyon Thresholds

Runyon: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1933 with 48.
Runyon: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1936 with 16.
Runyon: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 1957 with 79.
Runyon: days with a maximum temperature at or above 90 F (32.2 C) in 29 years, most in 1943 with 45.
19 fixed thresholds have at least one qualifying day at Runyon.

Days at or above 30 C (86 F)

29 years with a qualifying day

Days per year at Runyon with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 1957.

Days at or above 30 C (86 F) per year at Runyon
Year	Days	Decade average
1924	38	39
1927	30	39
1928	49	39
1931	74	66.6
1932	74	66.6
1933	63	66.6
1934	73	66.6
1935	55	66.6
1936	70	66.6
1937	66	66.6
1938	57	66.6
1939	67	66.6
1940	38	54.9
1941	60	54.9
1942	46	54.9
1943	71	54.9
1944	67	54.9
1945	45	54.9
1946	42	54.9
1947	70	54.9
1948	55	54.9
1950	55	62.9
1951	68	62.9
1952	57	62.9
1953	64	62.9
1954	56	62.9
1955	65	62.9
1956	59	62.9
1957	79	62.9

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

First to last qualifying date each year at Runyon
Year	First date	Last date
1924	1924-06-21	1924-09-13
1927	1927-04-20	1927-10-03
1928	1928-05-04	1928-10-18
1931	1931-05-17	1931-10-06
1932	1932-05-14	1932-09-22
1933	1933-05-26	1933-09-27
1934	1934-05-05	1934-09-28
1935	1935-04-27	1935-08-27
1936	1936-04-29	1936-09-13
1937	1937-05-21	1937-09-11
1938	1938-04-15	1938-10-17
1939	1939-05-06	1939-10-10
1940	1940-06-03	1940-09-24
1941	1941-04-14	1941-10-06
1942	1942-04-30	1942-09-16
1943	1943-05-07	1943-09-06
1944	1944-05-22	1944-09-06
1945	1945-06-13	1945-09-29
1946	1946-05-25	1946-10-06
1947	1947-04-06	1947-09-19
1948	1948-05-12	1948-09-18
1950	1950-06-06	1950-11-01
1951	1951-04-29	1951-09-20
1952	1952-04-22	1952-09-13
1953	1953-04-25	1953-09-30
1954	1954-04-20	1954-10-13
1955	1955-04-11	1955-09-01
1956	1956-04-28	1956-09-23
1957	1957-04-21	1957-09-22

Every Fixed Threshold

Fixed thresholds at Runyon
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	29	79	1957	79
35 C (95 F): Days	28	22	1953	12
40 C (104 F): Days	4	3	1936	1
90 F (32.2 C): Days	29	45	1943	45
100 F (37.8 C): Days	13	11	1955	5
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	29	34	1940	9
0 C (32 F): Frost days (min	29	155	1941	129
-10 C (14 F): Days with min	29	44	1934	18
-20 C (-4 F): Days with min	19	11	1934	3
-30 C (-22 F): Days with min	2	1	1934	1
20 C (68 F): Tropical nights (min	29	46	1943	16
25 C (77 F): Days with min	7	2	1936	2
10 mm (0.39 in): Days with 10 mm or more rain	30	48	1933	36
25 mm (0.98 in): Days with 25 mm or more rain	30	16	1936	7
50 mm (1.97 in): Days with 50 mm or more rain	24	5	1908	1
100 mm (3.94 in): Days with 100 mm or more rain	5	2	1924	1
10 cm (3.9 in): Days with 10 cm or more snowfall	2	3	1956	3
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1956	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

Data for Runyon 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).

Runyon Threshold Days by Year (USC00287825)

Key Facts for Runyon Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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