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Built 2026-10-19 (19 October 2026)

Waterbury 2 SSE Threshold Days by Year (USC00438815)

16 fixed thresholds counted per year at Waterbury 2 SSE (USC00438815): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waterbury 2 SSE Thresholds

  • Waterbury 2 SSE: days with a maximum temperature at or above 30 C (86 F) in 33 years, most in 1988 with 22.
  • Waterbury 2 SSE: days with a maximum temperature at or below 0 C (32 F) in 33 years, most in 1985 with 86.
  • Waterbury 2 SSE: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1965 with 188.
  • Waterbury 2 SSE: nights with a minimum temperature at or below -10 C (14 F) in 33 years, most in 1989 with 90.
  • 16 fixed thresholds have at least one qualifying day at Waterbury 2 SSE.
33 years with a qualifying day
Days at or above 30 C (86 F) per year at Waterbury 2 SSE Days per year at Waterbury 2 SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1988. 01020301959: 171960: 121961: 121962: 101963: 151964: 91965: 91966: 91967: 51968: 91969: 101970: 171971: 91972: 41973: 171974: 81975: 211976: 61977: 141978: 161979: 131980: 131981: 31982: 41983: 111984: 41985: 21986: 11987: 101988: 221989: 171990: 81991: 11195919631967197119751979198319871991
Days per year at Waterbury 2 SSE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1988.
Days at or above 30 C (86 F) per year at Waterbury 2 SSE
YearDaysDecade average
19591717
19601210
19611210
19621010
19631510
1964910
1965910
1966910
1967510
1968910
19691010
19701712.5
1971912.5
1972412.5
19731712.5
1974812.5
19752112.5
1976612.5
19771412.5
19781612.5
19791312.5
1980138.7
198138.7
198248.7
1983118.7
198448.7
198528.7
198618.7
1987108.7
1988228.7
1989178.7
199089.5
1991119.5
First to last qualifying date each year at Waterbury 2 SSE For each year, a bar from the first to the last day at Waterbury 2 SSE meeting 30 C (86 F). 1959: 10 June 1959 to 10 September 19591960: 28 May 1960 to 9 September 19601961: 15 May 1961 to 24 September 19611962: 28 April 1962 to 1 September 19621963: 3 June 1963 to 30 July 19631964: 24 May 1964 to 31 August 19641965: 8 June 1965 to 23 September 19651966: 27 June 1966 to 10 August 19661967: 4 June 1967 to 17 June 19671968: 2 July 1968 to 26 August 19681969: 13 June 1969 to 2 September 19691970: 3 June 1970 to 23 September 19701971: 20 May 1971 to 20 August 19711972: 13 July 1972 to 26 August 19721973: 12 June 1973 to 6 September 19731974: 6 June 1974 to 23 August 19741975: 21 May 1975 to 11 August 19751976: 19 April 1976 to 7 July 19761977: 22 May 1977 to 30 August 19771978: 27 May 1978 to 17 August 19781979: 9 May 1979 to 5 August 19791980: 15 June 1980 to 25 August 19801981: 16 June 1981 to 9 July 19811982: 7 July 1982 to 18 July 19821983: 13 June 1983 to 8 August 19831984: 8 June 1984 to 14 August 19841985: 15 July 1985 to 15 August 19851986: 19 July 1986 to 19 July 19861987: 30 May 1987 to 17 August 19871988: 13 June 1988 to 14 August 19881989: 18 May 1989 to 10 September 19891990: 27 April 1990 to 4 August 19901991: 24 May 1991 to 30 August 19911959196419691974197919841989JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Waterbury 2 SSE meeting 30 C (86 F).
First to last qualifying date each year at Waterbury 2 SSE
YearFirst dateLast date
19591959-06-101959-09-10
19601960-05-281960-09-09
19611961-05-151961-09-24
19621962-04-281962-09-01
19631963-06-031963-07-30
19641964-05-241964-08-31
19651965-06-081965-09-23
19661966-06-271966-08-10
19671967-06-041967-06-17
19681968-07-021968-08-26
19691969-06-131969-09-02
19701970-06-031970-09-23
19711971-05-201971-08-20
19721972-07-131972-08-26
19731973-06-121973-09-06
19741974-06-061974-08-23
19751975-05-211975-08-11
19761976-04-191976-07-07
19771977-05-221977-08-30
19781978-05-271978-08-17
19791979-05-091979-08-05
19801980-06-151980-08-25
19811981-06-161981-07-09
19821982-07-071982-07-18
19831983-06-131983-08-08
19841984-06-081984-08-14
19851985-07-151985-08-15
19861986-07-191986-07-19
19871987-05-301987-08-17
19881988-06-131988-08-14
19891989-05-181989-09-10
19901990-04-271990-08-04
19911991-05-241991-08-30

Every Fixed Threshold

Fixed thresholds at Waterbury 2 SSE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3322198811
35 C (95 F): Days4219751
90 F (32.2 C): Days26919884
0 C (32 F): Ice days (max3386198560
0 C (32 F): Frost days (min331881965161
-10 C (14 F): Days with min3390198966
-20 C (-4 F): Days with min3332198914
-30 C (-22 F): Days with min16319761
20 C (68 F): Tropical nights (min23519721
10 mm (0.39 in): Days with 10 mm or more rain3351198333
25 mm (0.98 in): Days with 25 mm or more rain321419735
50 mm (1.97 in): Days with 50 mm or more rain17319732
100 mm (3.94 in): Days with 100 mm or more rain1119731
10 cm (3.9 in): Days with 10 cm or more snowfall322019634
25 cm (9.8 in): Days with 25 cm or more snowfall22419623
50 cm (19.7 in): Days with 50 cm or more snowfall1119711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Waterbury 2 SSE 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).