Garrison Threshold Days by Year (USC00423138)

16 fixed thresholds counted per year at Garrison (USC00423138): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Garrison Thresholds

Garrison: days with 10 mm (0.39 in) or more of precipitation in 41 years, most in 1980 with 13.
Garrison: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 1952 with 112.
Garrison: days with a maximum temperature at or above 90 F (32.2 C) in 34 years, most in 1966 with 83.
Garrison: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1987 with 29.
16 fixed thresholds have at least one qualifying day at Garrison.

Days at or above 30 C (86 F)

34 years with a qualifying day

Days per year at Garrison with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1952.

Days at or above 30 C (86 F) per year at Garrison
Year	Days	Decade average
1903	70	63.3
1904	54	63.3
1905	71	63.3
1907	58	63.3
1952	112	98
1957	85	98
1958	103	98
1959	92	98
1960	102	84.4
1961	86	84.4
1962	95	84.4
1963	88	84.4
1964	82	84.4
1965	69	84.4
1966	106	84.4
1967	76	84.4
1968	64	84.4
1969	76	84.4
1970	60	61
1971	66	61
1972	39	61
1973	53	61
1974	68	61
1975	45	61
1976	59	61
1977	75	61
1978	74	61
1979	71	61
1980	64	78.7
1981	95	78.7
1982	69	78.7
1984	80	78.7
1986	94	78.7
1987	70	78.7

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

First to last qualifying date each year at Garrison
Year	First date	Last date
1903	1903-05-13	1903-10-04
1904	1904-05-17	1904-09-12
1905	1905-05-27	1905-09-22
1907	1907-06-19	1907-09-21
1952	1952-05-28	1952-10-10
1957	1957-06-02	1957-09-30
1958	1958-05-18	1958-10-06
1959	1959-05-12	1959-09-11
1960	1960-05-09	1960-09-28
1961	1961-05-25	1961-09-06
1962	1962-04-18	1962-09-25
1963	1963-05-06	1963-10-03
1964	1964-05-15	1964-10-08
1965	1965-06-06	1965-10-10
1966	1966-05-02	1966-09-25
1967	1967-05-18	1967-09-04
1968	1968-05-20	1968-09-11
1969	1969-05-24	1969-09-20
1970	1970-05-16	1970-09-12
1971	1971-06-14	1971-09-13
1972	1972-05-29	1972-08-22
1973	1973-06-06	1973-09-13
1974	1974-05-08	1974-09-11
1975	1975-06-06	1975-09-01
1976	1976-05-14	1976-09-06
1977	1977-06-05	1977-09-10
1978	1978-05-12	1978-10-01
1979	1979-05-22	1979-10-02
1980	1980-06-09	1980-09-30
1981	1981-06-05	1981-09-22
1982	1982-05-25	1982-09-23
1984	1984-05-11	1984-09-19
1986	1986-05-25	1986-09-08
1987	1987-06-04	1987-10-07

Every Fixed Threshold

Fixed thresholds at Garrison
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	34	112	1952	70
35 C (95 F): Days	33	48	1966	7
40 C (104 F): Days	5	4	1960	1
90 F (32.2 C): Days	34	83	1966	41
100 F (37.8 C): Days	22	18	1966	1
0 C (32 F): Ice days (max	34	29	1987	29
0 C (32 F): Frost days (min	34	188	1968	146
-10 C (14 F): Days with min	34	58	1903	42
-20 C (-4 F): Days with min	27	13	1987	13
-30 C (-22 F): Days with min	1	1	1905	1
20 C (68 F): Tropical nights (min	18	4	1970	1
10 mm (0.39 in): Days with 10 mm or more rain	41	13	1980	8
25 mm (0.98 in): Days with 25 mm or more rain	19	2	1905	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	6	1962	2
25 cm (9.8 in): Days with 25 cm or more snowfall	13	2	1971	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	0	n/a	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Garrison 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).

Garrison Threshold Days by Year (USC00423138)

Key Facts for Garrison Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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