Marion Threshold Days by Year

12 fixed thresholds counted per year at Marion (USC00445271): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Marion Thresholds

Marion: nights with a minimum temperature at or below 0 C (32 F) in 25 years, most in 1983 with 159.
Marion: nights with a minimum temperature at or below -10 C (14 F) in 25 years, most in 1977 with 41.
Marion: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1972 with 53.
Marion: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1972 with 18.
12 fixed thresholds have at least one qualifying day at Marion.

Days at or above 30 C (86 F)

23 years with a qualifying day

Days per year at Marion with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1980.

Days at or above 30 C (86 F) per year at Marion
Year	Days	Decade average
1961	8	16.8
1962	19	16.8
1963	11	16.8
1964	26	16.8
1965	11	16.8
1966	11	16.8
1967	17	16.8
1968	29	16.8
1969	19	16.8
1970	54	22.2
1971	12	22.2
1972	10	22.2
1973	24	22.2
1974	8	22.2
1975	28	22.2
1976	12	22.2
1977	33	22.2
1978	29	22.2
1979	12	22.2
1980	55	36.8
1981	22	36.8
1982	20	36.8
1983	50	36.8

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

First to last qualifying date each year at Marion
Year	First date	Last date
1961	1961-07-23	1961-09-13
1962	1962-05-18	1962-09-16
1963	1963-06-11	1963-09-22
1964	1964-06-10	1964-09-12
1965	1965-08-16	1965-09-22
1966	1966-06-10	1966-08-20
1967	1967-05-27	1967-08-03
1968	1968-06-23	1968-09-25
1969	1969-05-30	1969-08-25
1970	1970-04-30	1970-09-26
1971	1971-06-05	1971-09-08
1972	1972-07-18	1972-08-25
1973	1973-06-03	1973-09-04
1974	1974-06-10	1974-08-27
1975	1975-06-19	1975-09-06
1976	1976-04-18	1976-08-26
1977	1977-05-29	1977-09-06
1978	1978-05-28	1978-09-22
1979	1979-07-12	1979-08-27
1980	1980-06-16	1980-09-13
1981	1981-06-15	1981-09-03
1982	1982-05-14	1982-08-08
1983	1983-06-17	1983-09-12

Every Fixed Threshold

Fixed thresholds at Marion
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	23	55	1980	50
35 C (95 F): Days	2	5	1983	5
90 F (32.2 C): Days	17	24	1983	24
0 C (32 F): Ice days (max	23	29	1977	13
0 C (32 F): Frost days (min	25	159	1983	141
-10 C (14 F): Days with min	25	41	1977	48
-20 C (-4 F): Days with min	14	3	1962	5
-30 C (-22 F): Days with min	1	0	n/a	1
20 C (68 F): Tropical nights (min	10	4	1981	1
10 mm (0.39 in): Days with 10 mm or more rain	25	53	1972	30
25 mm (0.98 in): Days with 25 mm or more rain	25	18	1972	5
50 mm (1.97 in): Days with 50 mm or more rain	14	5	1972	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

Data for Marion 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Marion Threshold Days by Year

Key Facts for Marion Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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