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Built 2026-10-19 (19 October 2026)

Jacksonville Exp STN Threshold Days by Year (USC00414524)

16 fixed thresholds counted per year at Jacksonville Exp STN (USC00414524): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jacksonville Exp STN Thresholds

  • Jacksonville Exp STN: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1946 with 57.
  • Jacksonville Exp STN: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1946 with 32.
  • Jacksonville Exp STN: days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 1957 with 11.
  • Jacksonville Exp STN: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1953 with 2.
  • 16 fixed thresholds have at least one qualifying day at Jacksonville Exp STN.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Jacksonville Exp STN Days per year at Jacksonville Exp STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 135 in 1899. 0501001501898: 1261899: 1351900: 1201902: 1181898189919001902
Days per year at Jacksonville Exp STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 135 in 1899.
Days at or above 30 C (86 F) per year at Jacksonville Exp STN
YearDaysDecade average
1898126130.5
1899135130.5
1900120119
1902118119
First to last qualifying date each year at Jacksonville Exp STN For each year, a bar from the first to the last day at Jacksonville Exp STN meeting 30 C (86 F). 1898: 18 March 1898 to 16 October 18981899: 25 March 1899 to 22 October 18991900: 12 March 1900 to 24 October 19001902: 5 April 1902 to 13 October 19021898189919001902JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jacksonville Exp STN meeting 30 C (86 F).
First to last qualifying date each year at Jacksonville Exp STN
YearFirst dateLast date
18981898-03-181898-10-16
18991899-03-251899-10-22
19001900-03-121900-10-24
19021902-04-051902-10-13

Every Fixed Threshold

Fixed thresholds at Jacksonville Exp STN
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days41351899118
35 C (95 F): Days437189920
90 F (32.2 C): Days496189975
100 F (37.8 C): Days2818998
0 C (32 F): Ice days (max2318991
0 C (32 F): Frost days (min445189930
-10 C (14 F): Days with min3318991
-20 C (-4 F): Days with min1218992
20 C (68 F): Tropical nights (min41171900110
25 C (77 F): Days with min4918991
10 mm (0.39 in): Days with 10 mm or more rain2657194637
25 mm (0.98 in): Days with 25 mm or more rain2632194614
50 mm (1.97 in): Days with 50 mm or more rain261119573
100 mm (3.94 in): Days with 100 mm or more rain9219531
200 mm (7.87 in): Days with 200 mm or more rain1119451
10 cm (3.9 in): Days with 10 cm or more snowfall1119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

  • Data for Jacksonville Exp STN 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).