Beaverhead R/S Threshold Days by Year (USC00290818)

14 fixed thresholds counted per year at Beaverhead R/S (USC00290818): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Beaverhead R/S Thresholds

Beaverhead R/S: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1988 with 24.
Beaverhead R/S: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1972 with 6.
Beaverhead R/S: days with 10 cm (3.9 in) or more of snowfall in 35 years, most in 1987 with 6.
Beaverhead R/S: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 1968 with 230.
14 fixed thresholds have at least one qualifying day at Beaverhead R/S.

Days at or above 30 C (86 F)

25 years with a qualifying day

Days per year at Beaverhead R/S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 45 in 1969.

Days at or above 30 C (86 F) per year at Beaverhead R/S
Year	Days	Decade average
1940	19	14
1943	2	14
1944	21	14
1958	36	38
1959	40	38
1960	34	33.6
1961	32	33.6
1962	41	33.6
1964	35	33.6
1965	19	33.6
1966	34	33.6
1967	29	33.6
1968	33	33.6
1969	45	33.6
1970	37	31.6
1971	33	31.6
1972	26	31.6
1973	25	31.6
1974	37	31.6
1984	25	29.4
1985	45	29.4
1986	26	29.4
1987	29	29.4
1988	22	29.4
1992	31	31

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

First to last qualifying date each year at Beaverhead R/S
Year	First date	Last date
1940	1940-05-15	1940-08-10
1943	1943-07-11	1943-07-29
1944	1944-06-19	1944-08-13
1958	1958-05-27	1958-08-31
1959	1959-06-06	1959-08-31
1960	1960-06-13	1960-08-28
1961	1961-06-10	1961-08-10
1962	1962-06-19	1962-09-16
1964	1964-05-16	1964-09-09
1965	1965-06-20	1965-08-27
1966	1966-06-13	1966-08-24
1967	1967-06-16	1967-08-26
1968	1968-05-27	1968-07-23
1969	1969-05-26	1969-08-21
1970	1970-05-17	1970-09-09
1971	1971-06-15	1971-09-15
1972	1972-06-19	1972-08-03
1973	1973-06-09	1973-09-19
1974	1974-05-27	1974-09-10
1984	1984-05-13	1984-09-11
1985	1985-06-07	1985-09-02
1986	1986-05-26	1986-08-22
1987	1987-06-15	1987-08-20
1988	1988-05-17	1988-08-24
1992	1992-06-19	1992-09-18

Every Fixed Threshold

Fixed thresholds at Beaverhead R/S
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	25	45	1969	31
35 C (95 F): Days	8	2	1958	2
90 F (32.2 C): Days	24	20	1974	5
0 C (32 F): Ice days (max	20	12	1960	5
0 C (32 F): Frost days (min	27	230	1968	180
-10 C (14 F): Days with min	27	105	1964	60
-20 C (-4 F): Days with min	20	18	1964	6
-30 C (-22 F): Days with min	2	1	1965	1
10 mm (0.39 in): Days with 10 mm or more rain	46	24	1988	8
25 mm (0.98 in): Days with 25 mm or more rain	37	6	1972	1
50 mm (1.97 in): Days with 50 mm or more rain	6	1	1941	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1941	1
10 cm (3.9 in): Days with 10 cm or more snowfall	35	6	1987	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1987	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.

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Data for Beaverhead R/S 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).

Beaverhead R/S Threshold Days by Year (USC00290818)

Key Facts for Beaverhead R/S Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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