Belfield 1 SW Threshold Days by Year

17 fixed thresholds counted per year at Belfield 1 SW (USC00320639): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Belfield 1 SW Thresholds

Belfield 1 SW: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1970 with 208.
Belfield 1 SW: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1955 with 117.
Belfield 1 SW: nights with a minimum temperature at or below -20 C (-4 F) in 29 years, most in 1949 with 55.
Belfield 1 SW: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1953 with 24.
17 fixed thresholds have at least one qualifying day at Belfield 1 SW.

Days at or above 30 C (86 F)

28 years with a qualifying day

Days per year at Belfield 1 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 56 in 1949.

Days at or above 30 C (86 F) per year at Belfield 1 SW
Year	Days	Decade average
1949	56	56
1950	33	33.7
1951	22	33.7
1952	37	33.7
1953	21	33.7
1954	32	33.7
1955	51	33.7
1956	28	33.7
1957	27	33.7
1958	36	33.7
1959	50	33.7
1960	21	29.9
1961	52	29.9
1962	18	29.9
1963	35	29.9
1964	33	29.9
1966	28	29.9
1967	32	29.9
1968	23	29.9
1969	27	29.9
1970	54	34.9
1971	34	34.9
1972	25	34.9
1973	33	34.9
1974	37	34.9
1975	28	34.9
1976	45	34.9
1977	23	34.9

For each year, a bar from the first to the last day at Belfield 1 SW meeting 30 C (86 F).

First to last qualifying date each year at Belfield 1 SW
Year	First date	Last date
1949	1949-04-29	1949-09-23
1950	1950-06-06	1950-09-06
1951	1951-05-23	1951-08-23
1952	1952-04-26	1952-09-27
1953	1953-06-13	1953-10-01
1954	1954-05-20	1954-08-31
1955	1955-04-30	1955-10-10
1956	1956-05-21	1956-10-12
1957	1957-06-05	1957-10-02
1958	1958-05-11	1958-09-13
1959	1959-06-03	1959-09-08
1960	1960-05-12	1960-10-04
1961	1961-05-30	1961-08-31
1962	1962-04-24	1962-09-06
1963	1963-06-29	1963-10-04
1964	1964-05-17	1964-09-17
1966	1966-05-04	1966-09-08
1967	1967-07-05	1967-09-11
1968	1968-04-30	1968-09-14
1969	1969-05-26	1969-08-31
1970	1970-05-18	1970-10-06
1971	1971-06-23	1971-09-12
1972	1972-05-17	1972-09-10
1973	1973-06-01	1973-09-01
1974	1974-06-14	1974-08-25
1975	1975-06-25	1975-10-05
1976	1976-06-02	1976-10-03
1977	1977-05-09	1977-08-25

Every Fixed Threshold

Fixed thresholds at Belfield 1 SW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	28	56	1949	23
35 C (95 F): Days	27	14	1949	4
40 C (104 F): Days	2	1	1949	1
90 F (32.2 C): Days	28	38	1949	9
100 F (37.8 C): Days	11	5	1949	2
0 C (32 F): Ice days (max	28	96	1955	74
0 C (32 F): Frost days (min	29	208	1970	172
-10 C (14 F): Days with min	29	117	1955	76
-20 C (-4 F): Days with min	29	55	1949	33
-30 C (-22 F): Days with min	28	15	1950	11
-40 C (-40 F): Days with min	2	1	1949	1
20 C (68 F): Tropical nights (min	11	3	1951	2
10 mm (0.39 in): Days with 10 mm or more rain	29	24	1953	17
25 mm (0.98 in): Days with 25 mm or more rain	28	4	1953	4
50 mm (1.97 in): Days with 50 mm or more rain	7	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	13	4	1950	3
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1967	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Belfield 1 SW 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).

Belfield 1 SW Threshold Days by Year

Key Facts for Belfield 1 SW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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