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

Concord Threshold Days by Year (USC00092198)

13 fixed thresholds counted per year at Concord (USC00092198): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Concord Thresholds

  • Concord: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1947 with 59.
  • Concord: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 1947 with 23.
  • Concord: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1919 with 9.
  • Concord: days with 100 mm (3.94 in) or more of precipitation in 17 years, most in 1953 with 2.
  • 13 fixed thresholds have at least one qualifying day at Concord.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Concord Days per year at Concord with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1915. 0501001501913: 771914: 961915: 1121916: 951917: 8619131914191519161917
Days per year at Concord with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1915.
Days at or above 30 C (86 F) per year at Concord
YearDaysDecade average
19137793.2
19149693.2
191511293.2
19169593.2
19178693.2
First to last qualifying date each year at Concord For each year, a bar from the first to the last day at Concord meeting 30 C (86 F). 1913: 19 April 1913 to 9 September 19131914: 17 April 1914 to 23 September 19141915: 8 April 1915 to 3 October 19151916: 13 April 1916 to 16 October 19161917: 18 April 1917 to 21 September 191719131914191519161917JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Concord meeting 30 C (86 F).
First to last qualifying date each year at Concord
YearFirst dateLast date
19131913-04-191913-09-09
19141914-04-171914-09-23
19151915-04-081915-10-03
19161916-04-131916-10-16
19171917-04-181917-09-21

Every Fixed Threshold

Fixed thresholds at Concord
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5112191586
35 C (95 F): Days51819143
90 F (32.2 C): Days559191433
100 F (37.8 C): Days2419141
0 C (32 F): Ice days (max2819178
0 C (32 F): Frost days (min561191451
-10 C (14 F): Days with min2519175
20 C (68 F): Tropical nights (min581191559
10 mm (0.39 in): Days with 10 mm or more rain5959194747
25 mm (0.98 in): Days with 25 mm or more rain5923194720
50 mm (1.97 in): Days with 50 mm or more rain54919195
100 mm (3.94 in): Days with 100 mm or more rain17219531
10 cm (3.9 in): Days with 10 cm or more snowfall1119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

  • Data for Concord 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).