Mt Horeb 1 WSW Threshold Days by Year

17 fixed thresholds counted per year at Mt Horeb 1 WSW (USC00475677): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Horeb 1 WSW Thresholds

Mt Horeb 1 WSW: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1961 with 38.
Mt Horeb 1 WSW: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1959 with 13.
Mt Horeb 1 WSW: days with a maximum temperature at or above 30 C (86 F) in 14 years, most in 1910 with 47.
Mt Horeb 1 WSW: days with a maximum temperature at or below 0 C (32 F) in 14 years, most in 1910 with 81.
17 fixed thresholds have at least one qualifying day at Mt Horeb 1 WSW.

Days at or above 30 C (86 F)

14 years with a qualifying day

Days per year at Mt Horeb 1 WSW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 47 in 1910.

Days at or above 30 C (86 F) per year at Mt Horeb 1 WSW
Year	Days	Decade average
1904	16	23.2
1905	30	23.2
1906	30	23.2
1907	8	23.2
1908	29	23.2
1909	26	23.2
1910	47	31.3
1911	37	31.3
1912	29	31.3
1913	30	31.3
1914	33	31.3
1916	39	31.3
1917	14	31.3
1918	21	31.3

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

First to last qualifying date each year at Mt Horeb 1 WSW
Year	First date	Last date
1904	1904-05-22	1904-08-16
1905	1905-06-04	1905-09-29
1906	1906-05-17	1906-09-19
1907	1907-06-17	1907-09-01
1908	1908-06-22	1908-09-26
1909	1909-05-05	1909-08-26
1910	1910-06-16	1910-08-24
1911	1911-05-10	1911-09-14
1912	1912-06-25	1912-09-09
1913	1913-06-15	1913-09-07
1914	1914-05-26	1914-09-19
1916	1916-05-26	1916-08-24
1917	1917-05-16	1917-08-20
1918	1918-06-01	1918-08-25

Every Fixed Threshold

Fixed thresholds at Mt Horeb 1 WSW
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	14	47	1910	21
35 C (95 F): Days	12	9	1916	4
90 F (32.2 C): Days	13	27	1910	12
100 F (37.8 C): Days	1	2	1911	2
0 C (32 F): Ice days (max	14	81	1910	56
0 C (32 F): Frost days (min	13	171	1912	137
-10 C (14 F): Days with min	13	74	1912	50
-20 C (-4 F): Days with min	13	29	1912	19
-30 C (-22 F): Days with min	7	4	1912	1
20 C (68 F): Tropical nights (min	12	18	1916	12
25 C (77 F): Days with min	2	3	1916	1
10 mm (0.39 in): Days with 10 mm or more rain	16	38	1961	38
25 mm (0.98 in): Days with 25 mm or more rain	16	13	1959	6
50 mm (1.97 in): Days with 50 mm or more rain	11	3	1913	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1959	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	14	1959	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1918	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Mt Horeb 1 WSW 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).

Mt Horeb 1 WSW Threshold Days by Year

Key Facts for Mt Horeb 1 WSW Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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