Built 2026-10-19 (19 October 2026)

Sewall Masset Inlet Threshold Days by Year (CA00105PA91)

11 fixed thresholds counted per year at Sewall Masset Inlet (CA00105PA91): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sewall Masset Inlet Thresholds

  • Sewall Masset Inlet: days with a maximum temperature at or below 0 C (32 F) in 9 years, most in 1980 with 17.
  • Sewall Masset Inlet: nights with a minimum temperature at or below 0 C (32 F) in 9 years, most in 1975 with 110.
  • Sewall Masset Inlet: days with 10 mm (0.39 in) or more of precipitation in 9 years, most in 1983 with 56.
  • Sewall Masset Inlet: days with 25 mm (0.98 in) or more of precipitation in 9 years, most in 1977 with 10.
  • 11 fixed thresholds have at least one qualifying day at Sewall Masset Inlet.
9 years with a qualifying day
Nights at or below 0 C (32 F) per year at Sewall Masset Inlet Days per year at Sewall Masset Inlet with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 110 in 1975. 0501001501975: 1101976: 771977: 731978: 851979: 891980: 751981: 531982: 1061983: 69197519761977197819791980198119821983
Days per year at Sewall Masset Inlet with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 110 in 1975.
Nights at or below 0 C (32 F) per year at Sewall Masset Inlet
YearDaysDecade average
197511086.8
19767786.8
19777386.8
19788586.8
19798986.8
19807575.8
19815375.8
198210675.8
19836975.8
First to last qualifying date each year at Sewall Masset Inlet For each year, a bar from the first to the last day at Sewall Masset Inlet meeting 0 C (32 F). 1975: 3 January 1975 to 31 December 19751976: 5 January 1976 to 31 December 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 30 December 19791980: 4 January 1980 to 31 December 19801981: 28 January 1981 to 31 December 19811982: 1 January 1982 to 30 December 19821983: 3 January 1983 to 31 December 198319751977197919811983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sewall Masset Inlet meeting 0 C (32 F).
First to last qualifying date each year at Sewall Masset Inlet
YearFirst dateLast date
19751975-01-031975-12-31
19761976-01-051976-12-31
19771977-01-011977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-30
19801980-01-041980-12-31
19811981-01-281981-12-31
19821982-01-011982-12-30
19831983-01-031983-12-31

Every Fixed Threshold

Fixed thresholds at Sewall Masset Inlet
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2119771
90 F (32.2 C): Days1119771
0 C (32 F): Ice days (max91719803
0 C (32 F): Frost days (min9110197569
-10 C (14 F): Days with min6419824
10 mm (0.39 in): Days with 10 mm or more rain956198356
25 mm (0.98 in): Days with 25 mm or more rain91019775
50 mm (1.97 in): Days with 50 mm or more rain2119781
10 cm (3.9 in): Days with 10 cm or more snowfall9519822
25 cm (9.8 in): Days with 25 cm or more snowfall3319801
50 cm (19.7 in): Days with 50 cm or more snowfall1119801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1977.

Download the Data

  • Data for Sewall Masset Inlet 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).