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

Naples Threshold Days by Year (ITW00034113)

11 fixed thresholds counted per year at Naples (ITW00034113): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Naples Thresholds

  • Naples: days with a maximum temperature at or above 30 C (86 F) in 7 years, most in 2003 with 81.
  • Naples: days with a maximum temperature at or above 90 F (32.2 C) in 7 years, most in 2003 with 47.
  • Naples: nights with a minimum temperature at or above 20 C (68 F) in 7 years, most in 2025 with 93.
  • Naples: days with 10 mm (0.39 in) or more of precipitation in 7 years, most in 1996 with 40.
  • 11 fixed thresholds have at least one qualifying day at Naples.
7 years with a qualifying day
Days at or above 30 C (86 F) per year at Naples Days per year at Naples with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 2003. 02550751001996: 521997: 521998: 742001: 542002: 422003: 812025: 691996199719982001200220032025
Days per year at Naples with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 2003.
Days at or above 30 C (86 F) per year at Naples
YearDaysDecade average
19965259.3
19975259.3
19987459.3
20015459
20024259
20038159
20256969
First to last qualifying date each year at Naples For each year, a bar from the first to the last day at Naples meeting 30 C (86 F). 1996: 18 May 1996 to 28 August 19961997: 13 May 1997 to 13 September 19971998: 10 May 1998 to 3 September 19982001: 17 May 2001 to 11 October 20012002: 5 June 2002 to 11 September 20022003: 2 May 2003 to 7 September 20032025: 4 June 2025 to 20 September 20251996199719982001200220032025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Naples meeting 30 C (86 F).
First to last qualifying date each year at Naples
YearFirst dateLast date
19961996-05-181996-08-28
19971997-05-131997-09-13
19981998-05-101998-09-03
20012001-05-172001-10-11
20022002-06-052002-09-11
20032003-05-022003-09-07
20252025-06-042025-09-20

Every Fixed Threshold

Fixed thresholds at Naples
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days781200369
35 C (95 F): Days615199812
90 F (32.2 C): Days747200329
100 F (37.8 C): Days3219981
0 C (32 F): Frost days (min5619986
20 C (68 F): Tropical nights (min793202593
25 C (77 F): Days with min51320039
10 mm (0.39 in): Days with 10 mm or more rain740199625
25 mm (0.98 in): Days with 25 mm or more rain71319966
50 mm (1.97 in): Days with 50 mm or more rain6219961
100 mm (3.94 in): Days with 100 mm or more rain1120011

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Naples 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).