Daily records
Page built 2026-10-19
Data as of 2026-10-17
Search
Built 2026-10-19 (19 October 2026)

Jamestown Threshold Days by Year (SF001485170)

10 fixed thresholds counted per year at Jamestown (SF001485170): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jamestown Thresholds

  • Jamestown: days with 10 mm (0.39 in) or more of precipitation in 113 years, most in 1893 with 34.
  • Jamestown: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 1974 with 12.
  • Jamestown: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1930 with 3.
  • Jamestown: days with a maximum temperature at or above 30 C (86 F) in 7 years, most in 2016 with 66.
  • 10 fixed thresholds have at least one qualifying day at Jamestown.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Jamestown Days per year at Jamestown with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 66 in 2016. 0204060802014: 292015: 612016: 662017: 312020: 372021: 132026: 112014201520162017202020212026
Days per year at Jamestown with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 66 in 2016.
Days at or above 30 C (86 F) per year at Jamestown
YearDaysDecade average
20142946.8
20156146.8
20166646.8
20173146.8
20203720.3
20211320.3
20261120.3
First to last qualifying date each year at Jamestown For each year, a bar from the first to the last day at Jamestown meeting 30 C (86 F). 2014: 1 January 2014 to 27 December 20142015: 7 January 2015 to 31 December 20152016: 1 January 2016 to 31 December 20162017: 1 January 2017 to 17 December 20172020: 2 January 2020 to 29 December 20202021: 20 January 2021 to 17 November 20212026: 8 January 2026 to 4 February 20262014201520162017202020212026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jamestown meeting 30 C (86 F).
First to last qualifying date each year at Jamestown
YearFirst dateLast date
20142014-01-012014-12-27
20152015-01-072015-12-31
20162016-01-012016-12-31
20172017-01-012017-12-17
20202020-01-022020-12-29
20212021-01-202021-11-17
20262026-01-082026-02-04

Every Fixed Threshold

Fixed thresholds at Jamestown
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days766201611
35 C (95 F): Days2720153
90 F (32.2 C): Days62620154
100 F (37.8 C): Days1220162
0 C (32 F): Frost days (min782201735
-10 C (14 F): Days with min1420144
10 mm (0.39 in): Days with 10 mm or more rain1133418935
25 mm (0.98 in): Days with 25 mm or more rain1091219744
50 mm (1.97 in): Days with 50 mm or more rain43319302
100 mm (3.94 in): Days with 100 mm or more rain2119761

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2014.

Download the Data

  • Data for Jamestown 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).