Columbia Threshold Days by Year (USC00311956)

15 fixed thresholds counted per year at Columbia (USC00311956): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Columbia Thresholds

Columbia: days with 10 mm (0.39 in) or more of precipitation in 18 years, most in 1979 with 50.
Columbia: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1977 with 19.
Columbia: nights with a minimum temperature at or below 0 C (32 F) in 16 years, most in 1981 with 85.
Columbia: nights with a minimum temperature at or above 20 C (68 F) in 16 years, most in 1975 with 85.
15 fixed thresholds have at least one qualifying day at Columbia.

Days at or above 30 C (86 F)

15 years with a qualifying day

Days per year at Columbia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 108 in 1980.

Days at or above 30 C (86 F) per year at Columbia
Year	Days	Decade average
1964	58	62
1965	66	62
1971	84	89.5
1975	102	89.5
1976	93	89.5
1977	101	89.5
1978	88	89.5
1979	69	89.5
1980	108	87.3
1981	83	87.3
1982	68	87.3
1983	87	87.3
1984	89	87.3
1986	89	87.3
1992	39	39

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

First to last qualifying date each year at Columbia
Year	First date	Last date
1964	1964-05-08	1964-09-12
1965	1965-05-03	1965-09-24
1971	1971-04-13	1971-09-21
1975	1975-04-25	1975-10-15
1976	1976-04-16	1976-10-08
1977	1977-04-11	1977-10-03
1978	1978-05-21	1978-09-23
1979	1979-04-01	1979-10-21
1980	1980-04-24	1980-10-10
1981	1981-04-12	1981-10-06
1982	1982-05-12	1982-09-18
1983	1983-04-28	1983-10-05
1984	1984-04-27	1984-10-28
1986	1986-03-31	1986-10-05
1992	1992-05-15	1992-09-20

Every Fixed Threshold

Fixed thresholds at Columbia
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	15	108	1980	39
35 C (95 F): Days	13	24	1983	5
90 F (32.2 C): Days	15	60	1975	14
100 F (37.8 C): Days	2	2	1983	2
0 C (32 F): Ice days (max	12	5	1981	1
0 C (32 F): Frost days (min	16	85	1981	35
-10 C (14 F): Days with min	10	5	1981	4
20 C (68 F): Tropical nights (min	16	85	1975	69
25 C (77 F): Days with min	8	6	1992	6
10 mm (0.39 in): Days with 10 mm or more rain	18	50	1979	41
25 mm (0.98 in): Days with 25 mm or more rain	18	19	1977	15
50 mm (1.97 in): Days with 50 mm or more rain	16	9	1971	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1971	1
10 cm (3.9 in): Days with 10 cm or more snowfall	3	2	1980	2
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1980	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

Data for Columbia 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).

Columbia Threshold Days by Year (USC00311956)

Key Facts for Columbia Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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