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

Summerville Threshold Days by Year (USC00098436)

15 fixed thresholds counted per year at Summerville (USC00098436): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Summerville Thresholds

  • Summerville: days with 10 mm (0.39 in) or more of precipitation in 77 years, most in 1946 with 68.
  • Summerville: days with 25 mm (0.98 in) or more of precipitation in 77 years, most in 1992 with 39.
  • Summerville: days with 50 mm (1.97 in) or more of precipitation in 77 years, most in 1990 with 11.
  • Summerville: days with 100 mm (3.94 in) or more of precipitation in 23 years, most in 1990 with 3.
  • 15 fixed thresholds have at least one qualifying day at Summerville.
14 years with a qualifying day
Days at or above 30 C (86 F) per year at Summerville Days per year at Summerville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 134 in 2016. 0501001502006: 1002008: 952010: 1212011: 1052012: 892016: 1342017: 922018: 1172020: 832021: 682022: 912023: 912024: 892026: 422006201020122017202020222024
Days per year at Summerville with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 134 in 2016.
Days at or above 30 C (86 F) per year at Summerville
YearDaysDecade average
200610097.5
20089597.5
2010121109.7
2011105109.7
201289109.7
2016134109.7
201792109.7
2018117109.7
20208377.3
20216877.3
20229177.3
20239177.3
20248977.3
20264277.3
First to last qualifying date each year at Summerville For each year, a bar from the first to the last day at Summerville meeting 30 C (86 F). 2006: 15 April 2006 to 24 September 20062008: 25 May 2008 to 1 October 20082010: 3 April 2010 to 12 October 20102011: 10 April 2011 to 15 September 20112012: 3 April 2012 to 28 September 20122016: 17 March 2016 to 2 November 20162017: 14 April 2017 to 14 October 20172018: 10 May 2018 to 9 October 20182020: 28 March 2020 to 15 September 20202021: 23 May 2021 to 15 September 20212022: 3 May 2022 to 23 September 20222023: 6 April 2023 to 2 October 20232024: 3 May 2024 to 27 October 20242026: 18 May 2026 to 31 July 20262006201020122017202020222024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Summerville meeting 30 C (86 F).
First to last qualifying date each year at Summerville
YearFirst dateLast date
20062006-04-152006-09-24
20082008-05-252008-10-01
20102010-04-032010-10-12
20112011-04-102011-09-15
20122012-04-032012-09-28
20162016-03-172016-11-02
20172017-04-142017-10-14
20182018-05-102018-10-09
20202020-03-282020-09-15
20212021-05-232021-09-15
20222022-05-032022-09-23
20232023-04-062023-10-02
20242024-05-032024-10-27
20262026-05-182026-07-31

Every Fixed Threshold

Fixed thresholds at Summerville
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days14134201642
35 C (95 F): Days123420104
40 C (104 F): Days1220122
90 F (32.2 C): Days1499201624
100 F (37.8 C): Days4620121
0 C (32 F): Ice days (max10520101
0 C (32 F): Frost days (min13102200847
-10 C (14 F): Days with min91620102
20 C (68 F): Tropical nights (min1359201037
10 mm (0.39 in): Days with 10 mm or more rain7768194626
25 mm (0.98 in): Days with 25 mm or more rain7739199210
50 mm (1.97 in): Days with 50 mm or more rain771119902
100 mm (3.94 in): Days with 100 mm or more rain23319901
200 mm (7.87 in): Days with 200 mm or more rain2119901
10 cm (3.9 in): Days with 10 cm or more snowfall6219882

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2006.

Download the Data

  • Data for Summerville 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 (2026-10-12).