Built 2026-10-19 (19 October 2026)

First Connecticut Lake Threshold Days by Year (USC00272999)

16 fixed thresholds counted per year at First Connecticut Lake (USC00272999): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for First Connecticut Lake Thresholds

  • First Connecticut Lake: days with a maximum temperature at or below 0 C (32 F) in 97 years, most in 1997 with 121.
  • First Connecticut Lake: nights with a minimum temperature at or below 0 C (32 F) in 97 years, most in 1972 with 228.
  • First Connecticut Lake: nights with a minimum temperature at or below -10 C (14 F) in 97 years, most in 1978 with 121.
  • First Connecticut Lake: nights with a minimum temperature at or below -20 C (-4 F) in 97 years, most in 1989 with 74.
  • 16 fixed thresholds have at least one qualifying day at First Connecticut Lake.
71 years with a qualifying day
Days at or above 30 C (86 F) per year at First Connecticut Lake Days per year at First Connecticut Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1944. 0510151918: 51919: 81921: 91923: 31930: 11931: 31932: 11933: 21935: 31937: 71938: 61939: 21942: 21943: 31944: 111946: 31947: 91948: 31949: 61952: 61953: 51954: 11955: 71956: 11957: 21959: 41960: 11962: 11963: 41964: 11971: 11972: 11973: 11975: 21977: 31978: 11979: 11981: 11982: 11983: 31984: 11987: 31988: 91989: 31991: 11993: 11994: 41995: 21999: 12001: 32002: 42003: 32005: 22006: 12008: 12010: 72011: 22012: 52013: 52014: 22016: 22017: 52018: 72019: 32020: 112021: 72022: 72023: 42024: 42025: 92026: 5191819351947195719731984199920112020
Days per year at First Connecticut Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1944.
Days at or above 30 C (86 F) per year at First Connecticut Lake
YearDaysDecade average
191856.5
191986.5
192196
192336
193013.1
193133.1
193213.1
193323.1
193533.1
193773.1
193863.1
193923.1
194225.3
194335.3
1944115.3
194635.3
194795.3
194835.3
194965.3
195263.7
195353.7
195413.7
195573.7
195613.7
195723.7
195943.7
196011.8
196211.8
196341.8
196411.8
197111.4
197211.4
197311.4
197521.4
197731.4
197811.4
197911.4
198113
198213
198333
198413
198733
198893
198933
199111.8
199311.8
199441.8
199521.8
199911.8
200132.3
200242.3
200332.3
200522.3
200612.3
200812.3
201074.2
201124.2
201254.2
201354.2
201424.2
201624.2
201754.2
201874.2
201934.2
2020116.7
202176.7
202276.7
202346.7
202446.7
202596.7
202656.7
First to last qualifying date each year at First Connecticut Lake For each year, a bar from the first to the last day at First Connecticut Lake meeting 30 C (86 F). 1918: 23 July 1918 to 30 July 19181919: 3 June 1919 to 21 July 19191921: 2 July 1921 to 26 July 19211923: 20 June 1923 to 2 August 19231930: 6 June 1930 to 6 June 19301931: 1 July 1931 to 13 September 19311932: 16 May 1932 to 16 May 19321933: 9 June 1933 to 28 June 19331935: 17 August 1935 to 19 August 19351937: 4 July 1937 to 2 September 19371938: 22 June 1938 to 21 August 19381939: 27 July 1939 to 17 September 19391942: 12 June 1942 to 13 June 19421943: 11 July 1943 to 13 July 19431944: 28 June 1944 to 16 August 19441946: 26 June 1946 to 30 June 19461947: 11 June 1947 to 25 August 19471948: 30 June 1948 to 28 August 19481949: 14 June 1949 to 25 August 19491952: 8 July 1952 to 29 August 19521953: 18 July 1953 to 5 September 19531954: 23 June 1954 to 23 June 19541955: 30 May 1955 to 6 August 19551956: 15 June 1956 to 15 June 19561957: 16 June 1957 to 19 June 19571959: 29 July 1959 to 10 September 19591960: 9 September 1960 to 9 September 19601962: 19 May 1962 to 19 May 19621963: 3 July 1963 to 30 July 19631964: 29 July 1964 to 29 July 19641971: 1 July 1971 to 1 July 19711972: 16 July 1972 to 16 July 19721973: 9 July 1973 to 9 July 19731975: 2 August 1975 to 3 August 19751977: 23 May 1977 to 30 August 19771978: 30 May 1978 to 30 May 19781979: 26 July 1979 to 26 July 19791981: 17 June 1981 to 17 June 19811982: 19 July 1982 to 19 July 19821983: 14 June 1983 to 5 July 19831984: 10 June 1984 to 10 June 19841987: 11 July 1987 to 18 August 19871988: 16 June 1988 to 7 August 19881989: 26 July 1989 to 28 July 19891991: 21 July 1991 to 21 July 19911993: 7 July 1993 to 7 July 19931994: 17 June 1994 to 22 July 19941995: 20 June 1995 to 15 July 19951999: 5 September 1999 to 5 September 19992001: 16 June 2001 to 10 August 20012002: 4 July 2002 to 10 September 20022003: 25 June 2003 to 29 June 20032005: 26 June 2005 to 29 June 20052006: 19 June 2006 to 19 June 20062008: 11 June 2008 to 11 June 20082010: 6 July 2010 to 4 September 20102011: 22 July 2011 to 23 July 20112012: 21 May 2012 to 5 August 20122013: 2 June 2013 to 12 September 20132014: 2 July 2014 to 3 July 20142016: 14 July 2016 to 6 August 20162017: 19 May 2017 to 27 September 20172018: 1 June 2018 to 30 August 20182019: 6 July 2019 to 31 July 20192020: 27 May 2020 to 12 August 20202021: 27 May 2021 to 27 August 20212022: 14 May 2022 to 8 August 20222023: 2 June 2023 to 8 September 20232024: 19 June 2024 to 4 August 20242025: 24 June 2025 to 14 August 20252026: 13 June 2026 to 8 August 202619181937194919621979199320082019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at First Connecticut Lake meeting 30 C (86 F).
First to last qualifying date each year at First Connecticut Lake
YearFirst dateLast date
19181918-07-231918-07-30
19191919-06-031919-07-21
19211921-07-021921-07-26
19231923-06-201923-08-02
19301930-06-061930-06-06
19311931-07-011931-09-13
19321932-05-161932-05-16
19331933-06-091933-06-28
19351935-08-171935-08-19
19371937-07-041937-09-02
19381938-06-221938-08-21
19391939-07-271939-09-17
19421942-06-121942-06-13
19431943-07-111943-07-13
19441944-06-281944-08-16
19461946-06-261946-06-30
19471947-06-111947-08-25
19481948-06-301948-08-28
19491949-06-141949-08-25
19521952-07-081952-08-29
19531953-07-181953-09-05
19541954-06-231954-06-23
19551955-05-301955-08-06
19561956-06-151956-06-15
19571957-06-161957-06-19
19591959-07-291959-09-10
19601960-09-091960-09-09
19621962-05-191962-05-19
19631963-07-031963-07-30
19641964-07-291964-07-29
19711971-07-011971-07-01
19721972-07-161972-07-16
19731973-07-091973-07-09
19751975-08-021975-08-03
19771977-05-231977-08-30
19781978-05-301978-05-30
19791979-07-261979-07-26
19811981-06-171981-06-17
19821982-07-191982-07-19
19831983-06-141983-07-05
19841984-06-101984-06-10
19871987-07-111987-08-18
19881988-06-161988-08-07
19891989-07-261989-07-28
19911991-07-211991-07-21
19931993-07-071993-07-07
19941994-06-171994-07-22
19951995-06-201995-07-15
19991999-09-051999-09-05
20012001-06-162001-08-10
20022002-07-042002-09-10
20032003-06-252003-06-29
20052005-06-262005-06-29
20062006-06-192006-06-19
20082008-06-112008-06-11
20102010-07-062010-09-04
20112011-07-222011-07-23
20122012-05-212012-08-05
20132013-06-022013-09-12
20142014-07-022014-07-03
20162016-07-142016-08-06
20172017-05-192017-09-27
20182018-06-012018-08-30
20192019-07-062019-07-31
20202020-05-272020-08-12
20212021-05-272021-08-27
20222022-05-142022-08-08
20232023-06-022023-09-08
20242024-06-192024-08-04
20252025-06-242025-08-14
20262026-06-132026-08-08

Every Fixed Threshold

Fixed thresholds at First Connecticut Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days711119445
90 F (32.2 C): Days18419193
0 C (32 F): Ice days (max97121199760
0 C (32 F): Frost days (min972281972122
-10 C (14 F): Days with min97121197867
-20 C (-4 F): Days with min9774198937
-30 C (-22 F): Days with min922420152
-40 C (-40 F): Days with min14319181
20 C (68 F): Tropical nights (min14220181
10 mm (0.39 in): Days with 10 mm or more rain9352195424
25 mm (0.98 in): Days with 25 mm or more rain931320065
50 mm (1.97 in): Days with 50 mm or more rain35319241
100 mm (3.94 in): Days with 100 mm or more rain3119221
10 cm (3.9 in): Days with 10 cm or more snowfall812119336
25 cm (9.8 in): Days with 25 cm or more snowfall43420071
50 cm (19.7 in): Days with 50 cm or more snowfall1120071

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for First Connecticut 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).