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

Carbon Threshold Days by Year (CA003021309)

4 fixed thresholds counted per year at Carbon (CA003021309): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Carbon Thresholds

  • Carbon: days with 10 mm (0.39 in) or more of precipitation in 10 years, most in 1973 with 17.
  • Carbon: days with 25 mm (0.98 in) or more of precipitation in 9 years, most in 1973 with 5.
  • Carbon: days with 10 cm (3.9 in) or more of snowfall in 7 years, most in 1973 with 3.
  • Carbon: days with 25 cm (9.8 in) or more of snowfall in 1 years, most in 1967 with 1.
  • 4 fixed thresholds have at least one qualifying day at Carbon.
10 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Carbon Days per year at Carbon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1973. 051015201967: 31968: 131969: 71970: 131973: 171974: 41975: 81977: 71981: 111982: 91967196819691970197319741975197719811982
Days per year at Carbon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Carbon
YearDaysDecade average
196737.7
1968137.7
196977.7
1970139.8
1973179.8
197449.8
197589.8
197779.8
19811110
1982910
First to last qualifying date each year at Carbon For each year, a bar from the first to the last day at Carbon meeting 10 mm (0.39 in). 1967: 4 January 1967 to 2 October 19671968: 2 April 1968 to 21 September 19681969: 29 April 1969 to 21 September 19691970: 1 March 1970 to 5 October 19701973: 3 February 1973 to 11 December 19731974: 26 April 1974 to 17 September 19741975: 3 May 1975 to 30 December 19751977: 26 June 1977 to 2 October 19771981: 29 March 1981 to 19 September 19811982: 31 March 1982 to 26 September 198219671969197319751981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Carbon meeting 10 mm (0.39 in).
First to last qualifying date each year at Carbon
YearFirst dateLast date
19671967-01-041967-10-02
19681968-04-021968-09-21
19691969-04-291969-09-21
19701970-03-011970-10-05
19731973-02-031973-12-11
19741974-04-261974-09-17
19751975-05-031975-12-30
19771977-06-261977-10-02
19811981-03-291981-09-19
19821982-03-311982-09-26

Every Fixed Threshold

Fixed thresholds at Carbon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain101719739
25 mm (0.98 in): Days with 25 mm or more rain9519731
10 cm (3.9 in): Days with 10 cm or more snowfall7319731
25 cm (9.8 in): Days with 25 cm or more snowfall1119671

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Carbon 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).