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Built 2026-10-19 (19 October 2026)

Sumner Lake Threshold Days by Year

16 fixed thresholds counted per year at Sumner Lake (USC00298596): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sumner Lake Thresholds

  • Sumner Lake: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 2015 with 23.
  • Sumner Lake: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 2024 with 157.
  • Sumner Lake: days with a maximum temperature at or above 35 C (95 F) in 48 years, most in 2020 with 104.
  • Sumner Lake: days with a maximum temperature at or above 90 F (32.2 C) in 48 years, most in 2020 with 141.
  • 16 fixed thresholds have at least one qualifying day at Sumner Lake.
48 years with a qualifying day
Days at or above 30 C (86 F) per year at Sumner Lake Days per year at Sumner Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 157 in 2024. 0501001502001976: 791977: 1021978: 951979: 1081980: 1081981: 1021982: 991983: 1101984: 971985: 1081986: 921987: 901988: 911989: 1201990: 1071991: 931992: 981993: 1091994: 1211995: 1041996: 1191997: 1021998: 1331999: 1042000: 1342001: 1372002: 1282003: 1252004: 1022005: 882006: 1132007: 1252008: 1062009: 1222011: 1362012: 1432014: 1062015: 1162017: 1272018: 1392019: 1322020: 1552021: 1292022: 1452023: 1392024: 1572025: 1252026: 1471976198119861991199620012006201220192024
Days per year at Sumner Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 157 in 2024.
Days at or above 30 C (86 F) per year at Sumner Lake
YearDaysDecade average
19767996
197710296
19789596
197910896
1980108101.7
1981102101.7
198299101.7
1983110101.7
198497101.7
1985108101.7
198692101.7
198790101.7
198891101.7
1989120101.7
1990107109
199193109
199298109
1993109109
1994121109
1995104109
1996119109
1997102109
1998133109
1999104109
2000134118
2001137118
2002128118
2003125118
2004102118
200588118
2006113118
2007125118
2008106118
2009122118
2011136128.4
2012143128.4
2014106128.4
2015116128.4
2017127128.4
2018139128.4
2019132128.4
2020155142.4
2021129142.4
2022145142.4
2023139142.4
2024157142.4
2025125142.4
2026147142.4
First to last qualifying date each year at Sumner Lake For each year, a bar from the first to the last day at Sumner Lake meeting 30 C (86 F). 1976: 27 April 1976 to 18 September 19761977: 24 May 1977 to 30 September 19771978: 8 April 1978 to 13 October 19781979: 16 April 1979 to 27 October 19791980: 11 May 1980 to 2 October 19801981: 26 April 1981 to 2 October 19811982: 13 April 1982 to 6 October 19821983: 25 May 1983 to 29 September 19831984: 18 April 1984 to 25 September 19841985: 5 May 1985 to 7 October 19851986: 8 April 1986 to 22 September 19861987: 18 April 1987 to 9 October 19871988: 9 April 1988 to 18 October 19881989: 11 March 1989 to 15 October 19891990: 17 April 1990 to 17 October 19901991: 8 April 1991 to 18 October 19911992: 12 April 1992 to 14 October 19921993: 23 April 1993 to 6 October 19931994: 19 April 1994 to 5 October 19941995: 22 March 1995 to 19 October 19951996: 10 April 1996 to 15 October 19961997: 22 March 1997 to 6 October 19971998: 24 April 1998 to 15 October 19981999: 21 April 1999 to 16 October 19992000: 15 April 2000 to 4 October 20002001: 20 April 2001 to 18 October 20012002: 14 March 2002 to 22 September 20022003: 14 April 2003 to 24 October 20032004: 20 March 2004 to 22 September 20042005: 10 May 2005 to 19 October 20052006: 12 April 2006 to 9 November 20062007: 19 March 2007 to 21 October 20072008: 16 April 2008 to 11 October 20082009: 22 April 2009 to 20 October 20092011: 2 April 2011 to 17 October 20112012: 25 March 2012 to 24 October 20122014: 10 April 2014 to 26 October 20142015: 1 May 2015 to 16 October 20152017: 20 March 2017 to 19 October 20172018: 23 March 2018 to 6 October 20182019: 29 March 2019 to 3 October 20192020: 27 April 2020 to 23 October 20202021: 6 April 2021 to 26 October 20212022: 27 March 2022 to 16 October 20222023: 12 April 2023 to 8 November 20232024: 13 April 2024 to 30 October 20242025: 4 February 2025 to 6 October 20252026: 19 March 2026 to 12 October 202619761982198819942000200620142021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sumner Lake meeting 30 C (86 F).
First to last qualifying date each year at Sumner Lake
YearFirst dateLast date
19761976-04-271976-09-18
19771977-05-241977-09-30
19781978-04-081978-10-13
19791979-04-161979-10-27
19801980-05-111980-10-02
19811981-04-261981-10-02
19821982-04-131982-10-06
19831983-05-251983-09-29
19841984-04-181984-09-25
19851985-05-051985-10-07
19861986-04-081986-09-22
19871987-04-181987-10-09
19881988-04-091988-10-18
19891989-03-111989-10-15
19901990-04-171990-10-17
19911991-04-081991-10-18
19921992-04-121992-10-14
19931993-04-231993-10-06
19941994-04-191994-10-05
19951995-03-221995-10-19
19961996-04-101996-10-15
19971997-03-221997-10-06
19981998-04-241998-10-15
19991999-04-211999-10-16
20002000-04-152000-10-04
20012001-04-202001-10-18
20022002-03-142002-09-22
20032003-04-142003-10-24
20042004-03-202004-09-22
20052005-05-102005-10-19
20062006-04-122006-11-09
20072007-03-192007-10-21
20082008-04-162008-10-11
20092009-04-222009-10-20
20112011-04-022011-10-17
20122012-03-252012-10-24
20142014-04-102014-10-26
20152015-05-012015-10-16
20172017-03-202017-10-19
20182018-03-232018-10-06
20192019-03-292019-10-03
20202020-04-272020-10-23
20212021-04-062021-10-26
20222022-03-272022-10-16
20232023-04-122023-11-08
20242024-04-132024-10-30
20252025-02-042025-10-06
20262026-03-192026-10-12

Every Fixed Threshold

Fixed thresholds at Sumner Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days481572024147
35 C (95 F): Days48104202095
40 C (104 F): Days3521202014
90 F (32.2 C): Days481412020124
100 F (37.8 C): Days4850202055
110 F (43.3 C): Days4320233
0 C (32 F): Ice days (max471619781
0 C (32 F): Frost days (min48131198050
-10 C (14 F): Days with min482719896
-20 C (-4 F): Days with min8419901
20 C (68 F): Tropical nights (min4545201145
10 mm (0.39 in): Days with 10 mm or more rain492320155
25 mm (0.98 in): Days with 25 mm or more rain43719913
50 mm (1.97 in): Days with 50 mm or more rain20319991
100 mm (3.94 in): Days with 100 mm or more rain2120151
10 cm (3.9 in): Days with 10 cm or more snowfall18420151

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Sumner 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).