Williams 1 NW Threshold Days by Year (USC00359390)

13 fixed thresholds counted per year at Williams 1 NW (USC00359390): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Williams 1 NW Thresholds

Williams 1 NW: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1996 with 46.
Williams 1 NW: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1996 with 16.
Williams 1 NW: days with 50 mm (1.97 in) or more of precipitation in 57 years, most in 1950 with 4.
Williams 1 NW: days with 10 cm (3.9 in) or more of snowfall in 27 years, most in 1965 with 5.
13 fixed thresholds have at least one qualifying day at Williams 1 NW.

Days at or above 30 C (86 F)

5 years with a qualifying day

Days per year at Williams 1 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 49 in 1896.

For each year, a bar from the first to the last day at Williams 1 NW meeting 30 C (86 F).

First to last qualifying date each year at Williams 1 NW
Year	First date	Last date
1894	1894-05-24	1894-09-23
1895	1895-05-12	1895-08-23
1896	1896-05-28	1896-09-06
1897	1897-04-25	1897-09-25
1899	1899-06-10	1899-09-27

Every Fixed Threshold

Fixed thresholds at Williams 1 NW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	5	49	1896	39
35 C (95 F): Days	4	9	1896	5
90 F (32.2 C): Days	5	28	1896	13
100 F (37.8 C): Days	3	1	1895	1
0 C (32 F): Ice days (max	1	2	1899	2
0 C (32 F): Frost days (min	7	114	1897	105
-10 C (14 F): Days with min	5	3	1899	3
10 mm (0.39 in): Days with 10 mm or more rain	76	46	1996	23
25 mm (0.98 in): Days with 25 mm or more rain	76	16	1996	5
50 mm (1.97 in): Days with 50 mm or more rain	57	4	1950	1
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1953	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	5	1965	1
25 cm (9.8 in): Days with 25 cm or more snowfall	5	2	1969	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for Williams 1 NW 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).

Williams 1 NW Threshold Days by Year (USC00359390)

Key Facts for Williams 1 NW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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