Sunray 4 SW Threshold Days by Year (USC00418761)

16 fixed thresholds counted per year at Sunray 4 SW (USC00418761): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sunray 4 SW Thresholds

Sunray 4 SW: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1965 with 16.
Sunray 4 SW: nights with a minimum temperature at or below 0 C (32 F) in 21 years, most in 1964 with 124.
Sunray 4 SW: nights with a minimum temperature at or below -10 C (14 F) in 21 years, most in 1978 with 32.
Sunray 4 SW: nights with a minimum temperature at or above 20 C (68 F) in 21 years, most in 1977 with 37.
16 fixed thresholds have at least one qualifying day at Sunray 4 SW.

Days at or above 30 C (86 F)

20 years with a qualifying day

Days per year at Sunray 4 SW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 141 in 1963.

Days at or above 30 C (86 F) per year at Sunray 4 SW
Year	Days	Decade average
1963	141	113.3
1964	125	113.3
1965	108	113.3
1966	102	113.3
1967	107	113.3
1968	103	113.3
1969	107	113.3
1970	119	116.7
1972	131	116.7
1973	107	116.7
1974	112	116.7
1975	116	116.7
1976	101	116.7
1977	119	116.7
1978	122	116.7
1979	123	116.7
1980	120	113
1981	118	113
1982	104	113
1983	110	113

For each year, a bar from the first to the last day at Sunray 4 SW meeting 30 C (86 F).

First to last qualifying date each year at Sunray 4 SW
Year	First date	Last date
1963	1963-02-01	1963-10-11
1964	1964-04-15	1964-10-17
1965	1965-04-17	1965-10-15
1966	1966-05-07	1966-10-03
1967	1967-03-29	1967-10-15
1968	1968-05-02	1968-10-30
1969	1969-04-22	1969-10-10
1970	1970-05-07	1970-10-07
1972	1972-03-10	1972-10-18
1973	1973-05-10	1973-11-12
1974	1974-04-25	1974-10-05
1975	1975-04-16	1975-10-21
1976	1976-03-25	1976-10-12
1977	1977-04-08	1977-10-26
1978	1978-03-31	1978-10-21
1979	1979-02-14	1979-10-27
1980	1980-04-20	1980-11-09
1981	1981-04-10	1981-10-04
1982	1982-04-11	1982-10-07
1983	1983-04-25	1983-10-01

Every Fixed Threshold

Fixed thresholds at Sunray 4 SW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	20	141	1963	110
35 C (95 F): Days	20	69	1970	66
40 C (104 F): Days	10	15	1980	7
90 F (32.2 C): Days	20	103	1963	89
100 F (37.8 C): Days	20	32	1980	17
0 C (32 F): Ice days (max	20	25	1978	18
0 C (32 F): Frost days (min	21	124	1964	115
-10 C (14 F): Days with min	21	32	1978	22
-20 C (-4 F): Days with min	5	7	1963	2
20 C (68 F): Tropical nights (min	21	37	1977	27
25 C (77 F): Days with min	4	2	1965	2
10 mm (0.39 in): Days with 10 mm or more rain	22	16	1965	12
25 mm (0.98 in): Days with 25 mm or more rain	20	9	1965	4
50 mm (1.97 in): Days with 50 mm or more rain	9	4	1965	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1933	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

Data for Sunray 4 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).

Sunray 4 SW Threshold Days by Year (USC00418761)

Key Facts for Sunray 4 SW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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