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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Riddle Threshold Days by Year (USC00107678)

5 fixed thresholds counted per year at Riddle (USC00107678): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riddle Thresholds

  • 5 fixed thresholds have at least one qualifying day at Riddle.
2 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riddle Days per year at Riddle with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. 0358101902: 61903: 1019021903
Days per year at Riddle with 10 mm (0.39 in) or more of precipitation, with the decade average as a line.
Days with 10 mm (0.39 in) or more of precipitation per year at Riddle
YearDaysDecade average
190268
1903108
First to last qualifying date each year at Riddle For each year, a bar from the first to the last day at Riddle meeting 10 mm (0.39 in). 1902: 14 March 1902 to 10 December 19021903: 20 January 1903 to 10 September 190319021903JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riddle meeting 10 mm (0.39 in).
First to last qualifying date each year at Riddle
YearFirst dateLast date
19021902-03-141902-12-10
19031903-01-201903-09-10

Every Fixed Threshold

Fixed thresholds at Riddle
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Frost days (min10n/a210
-10 C (14 F): Days with min10n/a58
-20 C (-4 F): Days with min10n/a9
10 mm (0.39 in): Days with 10 mm or more rain20n/a10
25 mm (0.98 in): Days with 25 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

  • Data for Riddle 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 . Last revised (2025-12-31).