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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Cohasset Threshold Days by Year (USC00191582)

14 fixed thresholds counted per year at Cohasset (USC00191582): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cohasset Thresholds

  • Cohasset: days with 10 mm (0.39 in) or more of precipitation in 16 years, most in 1956 with 41.
  • Cohasset: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1901 with 23.
  • Cohasset: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1900 with 7.
  • Cohasset: days with a maximum temperature at or above 30 C (86 F) in 9 years, most in 1959 with 35.
  • 14 fixed thresholds have at least one qualifying day at Cohasset.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Cohasset Days per year at Cohasset with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1959. 0102030401949: 241950: 91951: 61952: 191953: 181954: 91955: 311956: 271959: 35194919501951195219531954195519561959
Days per year at Cohasset with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 35 in 1959.
Days at or above 30 C (86 F) per year at Cohasset
YearDaysDecade average
19492424
1950919.3
1951619.3
19521919.3
19531819.3
1954919.3
19553119.3
19562719.3
19593519.3
First to last qualifying date each year at Cohasset For each year, a bar from the first to the last day at Cohasset meeting 30 C (86 F). 1949: 20 May 1949 to 29 August 19491950: 9 June 1950 to 1 August 19501951: 17 May 1951 to 27 July 19511952: 27 June 1952 to 3 September 19521953: 7 June 1953 to 5 September 19531954: 21 June 1954 to 3 October 19541955: 23 May 1955 to 23 August 19551956: 1 June 1956 to 29 August 19561959: 21 May 1959 to 10 September 195919491951195319551959JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cohasset meeting 30 C (86 F).
First to last qualifying date each year at Cohasset
YearFirst dateLast date
19491949-05-201949-08-29
19501950-06-091950-08-01
19511951-05-171951-07-27
19521952-06-271952-09-03
19531953-06-071953-09-05
19541954-06-211954-10-03
19551955-05-231955-08-23
19561956-06-011956-08-29
19591959-05-211959-09-10

Every Fixed Threshold

Fixed thresholds at Cohasset
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days935195935
35 C (95 F): Days6719493
90 F (32.2 C): Days916194915
0 C (32 F): Ice days (max934195518
0 C (32 F): Frost days (min81241955113
-10 C (14 F): Days with min829195929
-20 C (-4 F): Days with min1219542
20 C (68 F): Tropical nights (min714194912
10 mm (0.39 in): Days with 10 mm or more rain1641195638
25 mm (0.98 in): Days with 25 mm or more rain1623190116
50 mm (1.97 in): Days with 50 mm or more rain14719001
100 mm (3.94 in): Days with 100 mm or more rain2219552
10 cm (3.9 in): Days with 10 cm or more snowfall8419493
25 cm (9.8 in): Days with 25 cm or more snowfall1119561

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Cohasset 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).