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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Caplan Threshold Days by Year (CA007051120)

15 fixed thresholds counted per year at Caplan (CA007051120): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Caplan Thresholds

  • Caplan: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 1978 with 117.
  • Caplan: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 1972 with 202.
  • Caplan: nights with a minimum temperature at or below -10 C (14 F) in 31 years, most in 1972 with 104.
  • Caplan: nights with a minimum temperature at or below -20 C (-4 F) in 31 years, most in 1972 with 33.
  • 15 fixed thresholds have at least one qualifying day at Caplan.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Caplan Days per year at Caplan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1952. 02461949: 21952: 61953: 31955: 21959: 21960: 21963: 11969: 11970: 11981: 11982: 11983: 3194919531959196319701982
Days per year at Caplan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 6 in 1952.
Days at or above 30 C (86 F) per year at Caplan
YearDaysDecade average
194922
195263.3
195333.3
195523.3
195923.3
196021.3
196311.3
196911.3
197011
198111.7
198211.7
198331.7
First to last qualifying date each year at Caplan For each year, a bar from the first to the last day at Caplan meeting 30 C (86 F). 1949: 29 July 1949 to 30 July 19491952: 7 July 1952 to 29 August 19521953: 17 July 1953 to 19 July 19531955: 9 July 1955 to 10 July 19551959: 27 July 1959 to 28 July 19591960: 29 June 1960 to 20 August 19601963: 26 July 1963 to 26 July 19631969: 13 June 1969 to 13 June 19691970: 10 June 1970 to 10 June 19701981: 3 July 1981 to 3 July 19811982: 18 July 1982 to 18 July 19821983: 17 June 1983 to 5 July 1983194919531959196319701982JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Caplan meeting 30 C (86 F).
First to last qualifying date each year at Caplan
YearFirst dateLast date
19491949-07-291949-07-30
19521952-07-071952-08-29
19531953-07-171953-07-19
19551955-07-091955-07-10
19591959-07-271959-07-28
19601960-06-291960-08-20
19631963-07-261963-07-26
19691969-06-131969-06-13
19701970-06-101970-06-10
19811981-07-031981-07-03
19821982-07-181982-07-18
19831983-06-171983-07-05

Every Fixed Threshold

Fixed thresholds at Caplan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days12619523
90 F (32.2 C): Days5219521
0 C (32 F): Ice days (max31117197883
0 C (32 F): Frost days (min312021972169
-10 C (14 F): Days with min31104197273
-20 C (-4 F): Days with min3133197211
-30 C (-22 F): Days with min4219571
20 C (68 F): Tropical nights (min11319701
10 mm (0.39 in): Days with 10 mm or more rain3143198134
25 mm (0.98 in): Days with 25 mm or more rain311219815
50 mm (1.97 in): Days with 50 mm or more rain18319581
100 mm (3.94 in): Days with 100 mm or more rain1119541
10 cm (3.9 in): Days with 10 cm or more snowfall311819557
25 cm (9.8 in): Days with 25 cm or more snowfall15319781
50 cm (19.7 in): Days with 50 cm or more snowfall1119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Caplan 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).