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

Salem Threshold Days by Year (USC00287850)

16 fixed thresholds counted per year at Salem (USC00287850): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Salem Thresholds

  • Salem: days with 10 mm (0.39 in) or more of precipitation in 6 years, most in 1899 with 34.
  • Salem: days with 25 mm (0.98 in) or more of precipitation in 6 years, most in 1902 with 11.
  • Salem: days with a maximum temperature at or above 30 C (86 F) in 5 years, most in 1900 with 80.
  • Salem: days with a maximum temperature at or above 35 C (95 F) in 5 years, most in 1900 with 21.
  • 16 fixed thresholds have at least one qualifying day at Salem.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Salem Days per year at Salem with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 1900. 0204060801899: 591900: 801901: 721902: 482025: 5418991900190119022025
Days per year at Salem with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 1900.
Days at or above 30 C (86 F) per year at Salem
YearDaysDecade average
18995959
19008066.7
19017266.7
19024866.7
20255454
First to last qualifying date each year at Salem For each year, a bar from the first to the last day at Salem meeting 30 C (86 F). 1899: 12 May 1899 to 8 September 18991900: 13 May 1900 to 6 October 19001901: 6 June 1901 to 16 September 19011902: 22 April 1902 to 8 September 19022025: 3 May 2025 to 20 September 202518991900190119022025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Salem meeting 30 C (86 F).
First to last qualifying date each year at Salem
YearFirst dateLast date
18991899-05-121899-09-08
19001900-05-131900-10-06
19011901-06-061901-09-16
19021902-04-221902-09-08
20252025-05-032025-09-20

Every Fixed Threshold

Fixed thresholds at Salem
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days580190054
35 C (95 F): Days52119008
40 C (104 F): Days1219012
90 F (32.2 C): Days559190027
100 F (37.8 C): Days3819001
0 C (32 F): Ice days (max521189917
0 C (32 F): Frost days (min51101899107
-10 C (14 F): Days with min51919017
-20 C (-4 F): Days with min1318993
20 C (68 F): Tropical nights (min552190044
25 C (77 F): Days with min2320253
10 mm (0.39 in): Days with 10 mm or more rain634189931
25 mm (0.98 in): Days with 25 mm or more rain61119029
50 mm (1.97 in): Days with 50 mm or more rain5319011
10 cm (3.9 in): Days with 10 cm or more snowfall5418991
25 cm (9.8 in): Days with 25 cm or more snowfall1119001

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

  • Data for Salem 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).