Dexter Threshold Days by Year (USC00232235)

16 fixed thresholds counted per year at Dexter (USC00232235): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dexter Thresholds

Dexter: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1973 with 58.
Dexter: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1927 with 28.
Dexter: days with 50 mm (1.97 in) or more of precipitation in 59 years, most in 1957 with 9.
Dexter: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 1963 with 97.
16 fixed thresholds have at least one qualifying day at Dexter.

Days at or above 30 C (86 F)

22 years with a qualifying day

Days per year at Dexter with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 125 in 1980.

Days at or above 30 C (86 F) per year at Dexter
Year	Days	Decade average
1962	103	96.1
1963	97	96.1
1964	100	96.1
1965	109	96.1
1966	84	96.1
1967	81	96.1
1968	90	96.1
1969	105	96.1
1970	103	95.2
1971	99	95.2
1972	93	95.2
1973	92	95.2
1974	76	95.2
1975	93	95.2
1976	80	95.2
1977	121	95.2
1978	104	95.2
1979	91	95.2
1980	125	109.3
1981	101	109.3
1982	102	109.3
2025	82	82

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

First to last qualifying date each year at Dexter
Year	First date	Last date
1962	1962-05-05	1962-10-07
1963	1963-04-21	1963-10-22
1964	1964-05-17	1964-09-20
1965	1965-04-22	1965-10-17
1966	1966-05-06	1966-10-09
1967	1967-04-05	1967-10-05
1968	1968-05-02	1968-10-14
1969	1969-05-05	1969-10-04
1970	1970-05-12	1970-10-03
1971	1971-04-19	1971-10-03
1972	1972-05-19	1972-09-21
1973	1973-05-10	1973-10-09
1974	1974-05-13	1974-09-19
1975	1975-05-18	1975-10-14
1976	1976-04-23	1976-10-04
1977	1977-04-14	1977-10-01
1978	1978-04-08	1978-10-12
1979	1979-05-08	1979-10-21
1980	1980-04-21	1980-10-11
1981	1981-04-10	1981-10-06
1982	1982-04-15	1982-10-05
2025	2025-06-04	2025-10-03

Every Fixed Threshold

Fixed thresholds at Dexter
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	22	125	1980	82
35 C (95 F): Days	22	68	1980	22
40 C (104 F): Days	3	11	1980	11
90 F (32.2 C): Days	22	101	1980	58
100 F (37.8 C): Days	14	35	1980	2
0 C (32 F): Ice days (max	22	24	1978	14
0 C (32 F): Frost days (min	24	97	1963	70
-10 C (14 F): Days with min	24	27	1963	9
-20 C (-4 F): Days with min	5	3	1977	2
20 C (68 F): Tropical nights (min	24	86	1977	63
25 C (77 F): Days with min	16	13	1980	2
10 mm (0.39 in): Days with 10 mm or more rain	60	58	1973	36
25 mm (0.98 in): Days with 25 mm or more rain	60	28	1927	15
50 mm (1.97 in): Days with 50 mm or more rain	59	9	1957	6
100 mm (3.94 in): Days with 100 mm or more rain	13	3	1957	1
10 cm (3.9 in): Days with 10 cm or more snowfall	23	4	1960	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

Data for Dexter 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).

Dexter Threshold Days by Year (USC00232235)

Key Facts for Dexter Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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