Benson Threshold Days by Year (USC00020680)

17 fixed thresholds counted per year at Benson (USC00020680): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Benson Thresholds

Benson: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1905 with 23.
Benson: nights with a minimum temperature at or below 0 C (32 F) in 57 years, most in 1922 with 146.
Benson: nights with a minimum temperature at or above 20 C (68 F) in 54 years, most in 1961 with 40.
Benson: days with 25 mm (0.98 in) or more of precipitation in 53 years, most in 1905 with 7.
17 fixed thresholds have at least one qualifying day at Benson.

Days at or above 30 C (86 F)

51 years with a qualifying day

Days per year at Benson with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 215 in 1934.

Days at or above 30 C (86 F) per year at Benson
Year	Days	Decade average
1905	123	143.4
1906	156	143.4
1907	140	143.4
1908	139	143.4
1909	159	143.4
1910	190	152.6
1911	141	152.6
1912	123	152.6
1913	147	152.6
1915	148	152.6
1916	169	152.6
1917	147	152.6
1919	156	152.6
1920	133	145
1921	151	145
1922	156	145
1923	128	145
1924	143	145
1925	153	145
1926	145	145
1928	144	145
1929	152	145
1930	162	174.3
1933	171	174.3
1934	215	174.3
1935	162	174.3
1936	186	174.3
1938	169	174.3
1939	155	174.3
1940	152	151.2
1941	136	151.2
1942	153	151.2
1947	154	151.2
1948	161	151.2
1953	143	147.4
1954	173	147.4
1955	139	147.4
1956	161	147.4
1957	135	147.4
1958	138	147.4
1959	143	147.4
1960	151	147
1961	147	147
1962	150	147
1963	164	147
1964	134	147
1965	141	147
1966	142	147
1970	138	143.7
1971	137	143.7
1973	156	143.7

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

First to last qualifying date each year at Benson
Year	First date	Last date
1905	1905-06-01	1905-10-10
1906	1906-03-21	1906-11-12
1907	1907-03-18	1907-10-27
1908	1908-04-21	1908-11-06
1909	1909-04-02	1909-11-05
1910	1910-03-02	1910-10-30
1911	1911-05-03	1911-10-19
1912	1912-04-22	1912-10-18
1913	1913-04-05	1913-10-30
1915	1915-04-28	1915-11-04
1916	1916-03-09	1916-11-05
1917	1917-03-28	1917-11-10
1919	1919-04-12	1919-10-25
1920	1920-04-30	1920-10-09
1921	1921-03-16	1921-10-22
1922	1922-04-21	1922-10-12
1923	1923-04-29	1923-10-08
1924	1924-04-21	1924-10-17
1925	1925-04-16	1925-10-10
1926	1926-04-22	1926-10-26
1928	1928-03-27	1928-10-19
1929	1929-04-02	1929-10-22
1930	1930-04-05	1930-10-22
1933	1933-03-27	1933-11-27
1934	1934-03-04	1934-11-12
1935	1935-03-01	1935-10-28
1936	1936-03-20	1936-10-19
1938	1938-02-04	1938-10-29
1939	1939-03-17	1939-10-22
1940	1940-04-13	1940-10-20
1941	1941-05-05	1941-10-12
1942	1942-04-01	1942-11-08
1947	1947-04-16	1947-10-20
1948	1948-04-14	1948-10-15
1953	1953-03-28	1953-10-17
1954	1954-04-08	1954-10-24
1955	1955-05-04	1955-10-20
1956	1956-03-25	1956-10-22
1957	1957-02-13	1957-10-10
1958	1958-04-20	1958-10-19
1959	1959-04-02	1959-10-26
1960	1960-03-21	1960-10-08
1961	1961-04-03	1961-10-21
1962	1962-04-12	1962-10-24
1963	1963-04-08	1963-10-15
1964	1964-04-15	1964-10-29
1965	1965-04-16	1965-10-26
1966	1966-04-01	1966-11-19
1970	1970-04-07	1970-09-26
1971	1971-03-26	1971-10-14
1973	1973-04-26	1973-11-11

Every Fixed Threshold

Fixed thresholds at Benson
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	51	215	1934	156
35 C (95 F): Days	51	127	1933	76
40 C (104 F): Days	46	67	1933	9
45 C (113 F): Days	1	1	1933	1
90 F (32.2 C): Days	51	170	1934	119
100 F (37.8 C): Days	51	102	1933	27
110 F (43.3 C): Days	2	19	1933	1
0 C (32 F): Frost days (min	57	146	1922	87
-10 C (14 F): Days with min	34	12	1922	1
20 C (68 F): Tropical nights (min	54	40	1961	16
25 C (77 F): Days with min	13	2	1909	2
10 mm (0.39 in): Days with 10 mm or more rain	65	23	1905	7
25 mm (0.98 in): Days with 25 mm or more rain	53	7	1905	1
50 mm (1.97 in): Days with 50 mm or more rain	8	2	1919	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1915	1
10 cm (3.9 in): Days with 10 cm or more snowfall	6	2	1916	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Benson 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).

Benson Threshold Days by Year (USC00020680)

Key Facts for Benson Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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