Huntsville Threshold Days by Year (USC00033540)

17 fixed thresholds counted per year at Huntsville (USC00033540): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Huntsville Thresholds

Huntsville: days with 10 mm (0.39 in) or more of precipitation in 20 years, most in 1973 with 51.
Huntsville: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 1973 with 23.
Huntsville: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1940 with 9.
Huntsville: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1980 with 112.
17 fixed thresholds have at least one qualifying day at Huntsville.

Days at or above 30 C (86 F)

17 years with a qualifying day

Days per year at Huntsville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1980.

Days at or above 30 C (86 F) per year at Huntsville
Year	Days	Decade average
1965	80	75.8
1966	75	75.8
1967	65	75.8
1968	82	75.8
1969	77	75.8
1970	80	74.5
1971	76	74.5
1972	80	74.5
1973	69	74.5
1974	56	74.5
1975	78	74.5
1976	49	74.5
1977	93	74.5
1978	96	74.5
1979	68	74.5
1980	112	93
1981	74	93

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

First to last qualifying date each year at Huntsville
Year	First date	Last date
1965	1965-04-04	1965-10-10
1966	1966-05-06	1966-10-13
1967	1967-03-13	1967-10-06
1968	1968-05-02	1968-10-02
1969	1969-05-29	1969-10-05
1970	1970-04-28	1970-09-21
1971	1971-06-02	1971-09-29
1972	1972-04-12	1972-09-20
1973	1973-05-10	1973-09-22
1974	1974-03-31	1974-08-31
1975	1975-05-09	1975-10-14
1976	1976-06-12	1976-10-04
1977	1977-04-09	1977-09-30
1978	1978-05-24	1978-10-21
1979	1979-05-19	1979-10-21
1980	1980-04-22	1980-10-10
1981	1981-05-28	1981-10-05

Every Fixed Threshold

Fixed thresholds at Huntsville
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	17	112	1980	74
35 C (95 F): Days	16	73	1980	6
40 C (104 F): Days	1	1	1980	1
90 F (32.2 C): Days	17	97	1980	35
100 F (37.8 C): Days	7	28	1980	28
0 C (32 F): Ice days (max	17	25	1978	3
0 C (32 F): Frost days (min	17	116	1969	102
-10 C (14 F): Days with min	17	25	1978	13
-20 C (-4 F): Days with min	9	5	1979	1
20 C (68 F): Tropical nights (min	17	58	1980	31
25 C (77 F): Days with min	2	4	1980	4
10 mm (0.39 in): Days with 10 mm or more rain	20	51	1973	38
25 mm (0.98 in): Days with 25 mm or more rain	20	23	1973	7
50 mm (1.97 in): Days with 50 mm or more rain	20	9	1940	1
100 mm (3.94 in): Days with 100 mm or more rain	7	5	1940	2
10 cm (3.9 in): Days with 10 cm or more snowfall	14	3	1971	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1968	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

Data for Huntsville 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).

Huntsville Threshold Days by Year (USC00033540)

Key Facts for Huntsville Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related