Warren Threshold Days by Year (USC00218673)

17 fixed thresholds counted per year at Warren (USC00218673): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Warren Thresholds

Warren: nights with a minimum temperature at or below 0 C (32 F) in 7 years, most in 1917 with 205.
Warren: nights with a minimum temperature at or below -10 C (14 F) in 7 years, most in 1916 with 116.
Warren: nights with a minimum temperature at or below -20 C (-4 F) in 7 years, most in 1916 with 79.
Warren: nights with a minimum temperature at or below -30 C (-22 F) in 7 years, most in 1916 with 32.
17 fixed thresholds have at least one qualifying day at Warren.

Days at or above 30 C (86 F)

6 years with a qualifying day

Days per year at Warren with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 34 in 1917.

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

First to last qualifying date each year at Warren
Year	First date	Last date
1915	1915-07-12	1915-09-06
1916	1916-07-01	1916-08-23
1917	1917-05-15	1917-09-17
1918	1918-05-04	1918-08-27
1920	1920-06-12	1920-10-07
1921	1921-05-20	1921-09-01

Every Fixed Threshold

Fixed thresholds at Warren
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	6	34	1917	28
35 C (95 F): Days	5	6	1921	6
40 C (104 F): Days	1	1	1917	1
90 F (32.2 C): Days	6	19	1921	19
100 F (37.8 C): Days	4	2	1917	1
0 C (32 F): Ice days (max	6	111	1921	111
0 C (32 F): Frost days (min	7	205	1917	178
-10 C (14 F): Days with min	7	116	1916	96
-20 C (-4 F): Days with min	7	79	1916	42
-30 C (-22 F): Days with min	7	32	1916	6
-40 C (-40 F): Days with min	2	1	1916	1
20 C (68 F): Tropical nights (min	4	8	1916	6
25 C (77 F): Days with min	1	2	1917	2
10 mm (0.39 in): Days with 10 mm or more rain	4	17	1918	14
25 mm (0.98 in): Days with 25 mm or more rain	4	3	1917	1
50 mm (1.97 in): Days with 50 mm or more rain	1	0	n/a	2
100 mm (3.94 in): Days with 100 mm or more rain	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 1915.

Download the Data

Data for Warren 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).

Warren Threshold Days by Year (USC00218673)

Key Facts for Warren Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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