Built 2026-10-19 (19 October 2026)

Hat Island Threshold Days by Year (CA002302370)

7 fixed thresholds counted per year at Hat Island (CA002302370): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hat Island Thresholds

  • Hat Island: nights with a minimum temperature at or below 0 C (32 F) in 4 years, most in 1962 with 306.
  • Hat Island: nights with a minimum temperature at or below -10 C (14 F) in 4 years, most in 1959 with 233.
  • Hat Island: nights with a minimum temperature at or below -20 C (-4 F) in 4 years, most in 1962 with 193.
  • Hat Island: nights with a minimum temperature at or below -30 C (-22 F) in 4 years, most in 1960 with 122.
  • 7 fixed thresholds have at least one qualifying day at Hat Island.
4 years with a qualifying day
Nights at or below 0 C (32 F) per year at Hat Island Days per year at Hat Island with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 306 in 1962. 01002003004001959: 3021960: 2871961: 3111962: 3061959196019611962
Days per year at Hat Island with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 306 in 1962.
Nights at or below 0 C (32 F) per year at Hat Island
YearDaysDecade average
1959302302
1960287301.3
1961311301.3
1962306301.3
First to last qualifying date each year at Hat Island For each year, a bar from the first to the last day at Hat Island meeting 0 C (32 F). 1959: 1 January 1959 to 30 December 19591960: 1 January 1960 to 31 December 19601961: 1 January 1961 to 31 December 19611962: 1 January 1962 to 31 December 19621959196019611962JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Hat Island meeting 0 C (32 F).
First to last qualifying date each year at Hat Island
YearFirst dateLast date
19591959-01-011959-12-30
19601960-01-011960-12-31
19611961-01-011961-12-31
19621962-01-011962-12-31

Every Fixed Threshold

Fixed thresholds at Hat Island
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max32491959220
0 C (32 F): Frost days (min43061962306
-10 C (14 F): Days with min42331959223
-20 C (-4 F): Days with min41931962193
-30 C (-22 F): Days with min41221960112
-40 C (-40 F): Days with min427196026
10 mm (0.39 in): Days with 10 mm or more rain3419593

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 Hat Island 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).