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

Herronton East Threshold Days by Year (CA003033138)

4 fixed thresholds counted per year at Herronton East (CA003033138): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Herronton East Thresholds

  • Herronton East: days with 10 mm (0.39 in) or more of precipitation in 9 years, most in 1978 with 13.
  • Herronton East: days with 25 mm (0.98 in) or more of precipitation in 7 years, most in 1981 with 4.
  • Herronton East: days with 10 cm (3.9 in) or more of snowfall in 4 years, most in 1978 with 2.
  • Herronton East: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1974 with 1.
  • 4 fixed thresholds have at least one qualifying day at Herronton East.
9 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Herronton East Days per year at Herronton East with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1978. 0510151974: 71975: 51976: 91977: 61978: 131979: 51980: 91981: 111982: 5197419751976197719781979198019811982
Days per year at Herronton East with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1978.
Days with 10 mm (0.39 in) or more of precipitation per year at Herronton East
YearDaysDecade average
197477.5
197557.5
197697.5
197767.5
1978137.5
197957.5
198098.3
1981118.3
198258.3
First to last qualifying date each year at Herronton East For each year, a bar from the first to the last day at Herronton East meeting 10 mm (0.39 in). 1974: 28 January 1974 to 19 August 19741975: 4 May 1975 to 16 September 19751976: 26 April 1976 to 8 August 19761977: 17 May 1977 to 31 August 19771978: 10 February 1978 to 11 September 19781979: 27 January 1979 to 9 December 19791980: 23 March 1980 to 21 October 19801981: 5 May 1981 to 25 September 19811982: 26 May 1982 to 26 September 198219741976197819801982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Herronton East meeting 10 mm (0.39 in).
First to last qualifying date each year at Herronton East
YearFirst dateLast date
19741974-01-281974-08-19
19751975-05-041975-09-16
19761976-04-261976-08-08
19771977-05-171977-08-31
19781978-02-101978-09-11
19791979-01-271979-12-09
19801980-03-231980-10-21
19811981-05-051981-09-25
19821982-05-261982-09-26

Every Fixed Threshold

Fixed thresholds at Herronton East
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain91319785
25 mm (0.98 in): Days with 25 mm or more rain7419813
50 mm (1.97 in): Days with 50 mm or more rain2119741
10 cm (3.9 in): Days with 10 cm or more snowfall4219782

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

  • Data for Herronton East 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).