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

Keysville 2 S Threshold Days by Year (USC00444568)

14 fixed thresholds counted per year at Keysville 2 S (USC00444568): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Keysville 2 S Thresholds

  • Keysville 2 S: days with 10 mm (0.39 in) or more of precipitation in 36 years, most in 2003 with 50.
  • Keysville 2 S: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 2003 with 22.
  • Keysville 2 S: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 2008 with 5.
  • Keysville 2 S: days with 10 cm (3.9 in) or more of snowfall in 9 years, most in 2002 with 3.
  • 14 fixed thresholds have at least one qualifying day at Keysville 2 S.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Keysville 2 S Days per year at Keysville 2 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 2019. 02550751002016: 802017: 712018: 742019: 972020: 7120162017201820192020
Days per year at Keysville 2 S with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 2019.
Days at or above 30 C (86 F) per year at Keysville 2 S
YearDaysDecade average
20168080.5
20177180.5
20187480.5
20199780.5
20207171
First to last qualifying date each year at Keysville 2 S For each year, a bar from the first to the last day at Keysville 2 S meeting 30 C (86 F). 2016: 19 April 2016 to 20 October 20162017: 30 April 2017 to 12 October 20172018: 3 May 2018 to 8 October 20182019: 19 May 2019 to 4 October 20192020: 21 March 2020 to 5 September 202020162017201820192020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Keysville 2 S meeting 30 C (86 F).
First to last qualifying date each year at Keysville 2 S
YearFirst dateLast date
20162016-04-192016-10-20
20172017-04-302017-10-12
20182018-05-032018-10-08
20192019-05-192019-10-04
20202020-03-212020-09-05

Every Fixed Threshold

Fixed thresholds at Keysville 2 S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days597201971
35 C (95 F): Days5920194
90 F (32.2 C): Days558201929
0 C (32 F): Ice days (max5920162
0 C (32 F): Frost days (min598201880
-10 C (14 F): Days with min41420185
20 C (68 F): Tropical nights (min562201861
10 mm (0.39 in): Days with 10 mm or more rain3650200331
25 mm (0.98 in): Days with 25 mm or more rain3622200310
50 mm (1.97 in): Days with 50 mm or more rain32520083
100 mm (3.94 in): Days with 100 mm or more rain8119951
200 mm (7.87 in): Days with 200 mm or more rain1120181
10 cm (3.9 in): Days with 10 cm or more snowfall9320022
25 cm (9.8 in): Days with 25 cm or more snowfall2219871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2016.

Download the Data

  • Data for Keysville 2 S 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).