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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Walhalla 1 SW Threshold Days by Year

17 fixed thresholds counted per year at Walhalla 1 SW (USC00329155): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Walhalla 1 SW Thresholds

  • Walhalla 1 SW: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1970 with 24.
  • Walhalla 1 SW: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1985 with 8.
  • Walhalla 1 SW: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1955 with 9.
  • Walhalla 1 SW: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1955 with 2.
  • 17 fixed thresholds have at least one qualifying day at Walhalla 1 SW.
3 years with a qualifying day
Nights at or below 0 C (32 F) per year at Walhalla 1 SW Days per year at Walhalla 1 SW with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 198 in 1919. 01002003001917: 2111918: 1891919: 198191719181919
Days per year at Walhalla 1 SW with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 198 in 1919.
Nights at or below 0 C (32 F) per year at Walhalla 1 SW
YearDaysDecade average
1917211199.3
1918189199.3
1919198199.3
First to last qualifying date each year at Walhalla 1 SW For each year, a bar from the first to the last day at Walhalla 1 SW meeting 0 C (32 F). 1917: 3 January 1917 to 31 December 19171918: 2 January 1918 to 31 December 19181919: 1 January 1919 to 31 December 1919191719181919JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Walhalla 1 SW meeting 0 C (32 F).
First to last qualifying date each year at Walhalla 1 SW
YearFirst dateLast date
19171917-01-031917-12-31
19181918-01-021918-12-31
19191919-01-011919-12-31

Every Fixed Threshold

Fixed thresholds at Walhalla 1 SW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days240191940
35 C (95 F): Days2719197
90 F (32.2 C): Days219191919
100 F (37.8 C): Days1119191
0 C (32 F): Ice days (max21181919118
0 C (32 F): Frost days (min31981919198
-10 C (14 F): Days with min31251919125
-20 C (-4 F): Days with min356191956
-30 C (-22 F): Days with min317191816
-40 C (-40 F): Days with min1119181
20 C (68 F): Tropical nights (min2419194
10 mm (0.39 in): Days with 10 mm or more rain4224197015
25 mm (0.98 in): Days with 25 mm or more rain39819853
50 mm (1.97 in): Days with 50 mm or more rain18219552
100 mm (3.94 in): Days with 100 mm or more rain2219972
10 cm (3.9 in): Days with 10 cm or more snowfall25919551
25 cm (9.8 in): Days with 25 cm or more snowfall10119551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for Walhalla 1 SW 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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