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Built 2026-10-15 (15 October 2026)

Summersville Lake Threshold Days by Year

15 fixed thresholds counted per year at Summersville Lake (USC00468614): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Summersville Lake Thresholds

  • Summersville Lake: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1979 with 57.
  • Summersville Lake: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1996 with 17.
  • Summersville Lake: nights with a minimum temperature at or below 0 C (32 F) in 51 years, most in 1976 with 156.
  • Summersville Lake: nights with a minimum temperature at or below -10 C (14 F) in 51 years, most in 1978 with 56.
  • 15 fixed thresholds have at least one qualifying day at Summersville Lake.
48 years with a qualifying day
Days at or above 30 C (86 F) per year at Summersville Lake Days per year at Summersville Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1983. 02040601968: 281969: 231970: 331971: 121972: 111973: 391974: 111975: 261976: 131977: 311978: 221979: 61980: 291981: 61982: 101983: 431984: 331985: 261986: 431987: 271988: 321989: 21990: 41991: 121992: 11993: 161994: 71995: 181996: 41997: 51998: 61999: 232001: 32003: 32004: 22005: 182006: 162007: 282008: 102009: 32010: 222011: 172014: 62015: 82016: 232017: 72023: 92026: 121968197319781983198819931998200520102017
Days per year at Summersville Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 43 in 1983.
Days at or above 30 C (86 F) per year at Summersville Lake
YearDaysDecade average
19682825.5
19692325.5
19703320.4
19711220.4
19721120.4
19733920.4
19741120.4
19752620.4
19761320.4
19773120.4
19782220.4
1979620.4
19802925.1
1981625.1
19821025.1
19834325.1
19843325.1
19852625.1
19864325.1
19872725.1
19883225.1
1989225.1
199049.6
1991129.6
199219.6
1993169.6
199479.6
1995189.6
199649.6
199759.6
199869.6
1999239.6
2001310.4
2003310.4
2004210.4
20051810.4
20061610.4
20072810.4
20081010.4
2009310.4
20102213.8
20111713.8
2014613.8
2015813.8
20162313.8
2017713.8
2023910.5
20261210.5
First to last qualifying date each year at Summersville Lake For each year, a bar from the first to the last day at Summersville Lake meeting 30 C (86 F). 1968: 7 June 1968 to 25 August 19681969: 8 May 1969 to 13 October 19691970: 1 May 1970 to 25 September 19701971: 19 May 1971 to 16 September 19711972: 16 June 1972 to 25 August 19721973: 4 June 1973 to 6 September 19731974: 2 April 1974 to 28 August 19741975: 22 May 1975 to 6 September 19751976: 18 April 1976 to 27 August 19761977: 22 May 1977 to 5 September 19771978: 27 May 1978 to 22 September 19781979: 9 May 1979 to 10 August 19791980: 24 June 1980 to 5 September 19801981: 16 June 1981 to 1 September 19811982: 19 May 1982 to 13 September 19821983: 24 June 1983 to 20 September 19831984: 27 April 1984 to 14 September 19841985: 19 April 1985 to 11 September 19851986: 28 April 1986 to 30 September 19861987: 23 April 1987 to 28 August 19871988: 15 June 1988 to 28 August 19881989: 12 July 1989 to 5 August 19891990: 9 July 1990 to 12 July 19901991: 27 May 1991 to 31 August 19911992: 10 July 1992 to 10 July 19921993: 6 July 1993 to 4 September 19931994: 18 June 1994 to 8 July 19941995: 14 July 1995 to 10 September 19951996: 30 April 1996 to 21 May 19961997: 25 June 1997 to 18 August 19971998: 22 July 1998 to 15 September 19981999: 10 June 1999 to 14 August 19992001: 24 April 2001 to 10 August 20012003: 3 August 2003 to 30 August 20032004: 5 July 2004 to 29 August 20042005: 7 June 2005 to 21 August 20052006: 31 May 2006 to 27 August 20062007: 2 May 2007 to 8 September 20072008: 12 June 2008 to 15 September 20082009: 26 April 2009 to 29 April 20092010: 3 April 2010 to 24 September 20102011: 26 April 2011 to 5 September 20112014: 8 May 2014 to 3 September 20142015: 10 May 2015 to 10 September 20152016: 2 June 2016 to 11 September 20162017: 18 May 2017 to 23 August 20172023: 15 July 2023 to 1 August 20232026: 19 May 2026 to 7 September 202619681974198019861992199820062014JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Summersville Lake meeting 30 C (86 F).
First to last qualifying date each year at Summersville Lake
YearFirst dateLast date
19681968-06-071968-08-25
19691969-05-081969-10-13
19701970-05-011970-09-25
19711971-05-191971-09-16
19721972-06-161972-08-25
19731973-06-041973-09-06
19741974-04-021974-08-28
19751975-05-221975-09-06
19761976-04-181976-08-27
19771977-05-221977-09-05
19781978-05-271978-09-22
19791979-05-091979-08-10
19801980-06-241980-09-05
19811981-06-161981-09-01
19821982-05-191982-09-13
19831983-06-241983-09-20
19841984-04-271984-09-14
19851985-04-191985-09-11
19861986-04-281986-09-30
19871987-04-231987-08-28
19881988-06-151988-08-28
19891989-07-121989-08-05
19901990-07-091990-07-12
19911991-05-271991-08-31
19921992-07-101992-07-10
19931993-07-061993-09-04
19941994-06-181994-07-08
19951995-07-141995-09-10
19961996-04-301996-05-21
19971997-06-251997-08-18
19981998-07-221998-09-15
19991999-06-101999-08-14
20012001-04-242001-08-10
20032003-08-032003-08-30
20042004-07-052004-08-29
20052005-06-072005-08-21
20062006-05-312006-08-27
20072007-05-022007-09-08
20082008-06-122008-09-15
20092009-04-262009-04-29
20102010-04-032010-09-24
20112011-04-262011-09-05
20142014-05-082014-09-03
20152015-05-102015-09-10
20162016-06-022016-09-11
20172017-05-182017-08-23
20232023-07-152023-08-01
20262026-05-192026-09-07

Every Fixed Threshold

Fixed thresholds at Summersville Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4843198312
35 C (95 F): Days1120071
90 F (32.2 C): Days291519731
0 C (32 F): Ice days (max4954201011
0 C (32 F): Frost days (min51156197645
-10 C (14 F): Days with min5156197813
-20 C (-4 F): Days with min231819782
20 C (68 F): Tropical nights (min381319994
10 mm (0.39 in): Days with 10 mm or more rain5757197931
25 mm (0.98 in): Days with 25 mm or more rain571719967
50 mm (1.97 in): Days with 50 mm or more rain34319693
100 mm (3.94 in): Days with 100 mm or more rain3119861
10 cm (3.9 in): Days with 10 cm or more snowfall45820102
25 cm (9.8 in): Days with 25 cm or more snowfall11219871
50 cm (19.7 in): Days with 50 cm or more snowfall1120091

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Summersville Lake 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-14).