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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Westbrook St Lawrence Threshold Days by Year

6 fixed thresholds counted per year at Westbrook St Lawrence (CA008404201): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Westbrook St Lawrence Thresholds

  • Westbrook St Lawrence: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 1972 with 13.
  • Westbrook St Lawrence: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1974 with 71.
  • Westbrook St Lawrence: days with 25 mm (0.98 in) or more of precipitation in 17 years, most in 1974 with 24.
  • Westbrook St Lawrence: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1975 with 5.
  • 6 fixed thresholds have at least one qualifying day at Westbrook St Lawrence.
17 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Westbrook St Lawrence Days per year at Westbrook St Lawrence with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 71 in 1974. 0204060801958: 491959: 551966: 531967: 381968: 551969: 571970: 601971: 501972: 571974: 711975: 521976: 541977: 361978: 491979: 541980: 521982: 39195819661968197019721975197719791982
Days per year at Westbrook St Lawrence with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 71 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Westbrook St Lawrence
YearDaysDecade average
19584952
19595552
19665350.8
19673850.8
19685550.8
19695750.8
19706053.7
19715053.7
19725753.7
19747153.7
19755253.7
19765453.7
19773653.7
19784953.7
19795453.7
19805245.5
19823945.5
First to last qualifying date each year at Westbrook St Lawrence For each year, a bar from the first to the last day at Westbrook St Lawrence meeting 10 mm (0.39 in). 1958: 2 January 1958 to 23 December 19581959: 4 January 1959 to 30 December 19591966: 3 January 1966 to 25 December 19661967: 5 January 1967 to 29 December 19671968: 1 January 1968 to 29 December 19681969: 1 January 1969 to 25 December 19691970: 21 January 1970 to 27 December 19701971: 17 January 1971 to 29 December 19711972: 2 January 1972 to 22 December 19721974: 1 January 1974 to 30 December 19741975: 1 January 1975 to 27 December 19751976: 1 January 1976 to 13 December 19761977: 21 January 1977 to 22 December 19771978: 21 January 1978 to 25 December 19781979: 14 January 1979 to 28 December 19791980: 2 January 1980 to 30 December 19801982: 5 January 1982 to 29 December 1982195819671970197419771980JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Westbrook St Lawrence meeting 10 mm (0.39 in).
First to last qualifying date each year at Westbrook St Lawrence
YearFirst dateLast date
19581958-01-021958-12-23
19591959-01-041959-12-30
19661966-01-031966-12-25
19671967-01-051967-12-29
19681968-01-011968-12-29
19691969-01-011969-12-25
19701970-01-211970-12-27
19711971-01-171971-12-29
19721972-01-021972-12-22
19741974-01-011974-12-30
19751975-01-011975-12-27
19761976-01-011976-12-13
19771977-01-211977-12-22
19781978-01-211978-12-25
19791979-01-141979-12-28
19801980-01-021980-12-30
19821982-01-051982-12-29

Every Fixed Threshold

Fixed thresholds at Westbrook St Lawrence
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1771197439
25 mm (0.98 in): Days with 25 mm or more rain1724197412
50 mm (1.97 in): Days with 50 mm or more rain14519751
100 mm (3.94 in): Days with 100 mm or more rain1119701
10 cm (3.9 in): Days with 10 cm or more snowfall181319725
25 cm (9.8 in): Days with 25 cm or more snowfall5419591

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Westbrook St Lawrence 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).