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Built 2026-10-18 (18 October 2026)

Coopers Rock Sf Threshold Days by Year

13 fixed thresholds counted per year at Coopers Rock Sf (USC00461900): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Coopers Rock Sf Thresholds

  • Coopers Rock Sf: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1979 with 10.
  • Coopers Rock Sf: days with 10 mm (0.39 in) or more of precipitation in 11 years, most in 1979 with 56.
  • Coopers Rock Sf: days with 25 mm (0.98 in) or more of precipitation in 11 years, most in 1980 with 17.
  • Coopers Rock Sf: days with a maximum temperature at or below 0 C (32 F) in 9 years, most in 1980 with 52.
  • 13 fixed thresholds have at least one qualifying day at Coopers Rock Sf.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Coopers Rock Sf Days per year at Coopers Rock Sf with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1983. 024681978: 11980: 41982: 31983: 71985: 11987: 4197819801982198319851987
Days per year at Coopers Rock Sf with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1983.
Days at or above 30 C (86 F) per year at Coopers Rock Sf
YearDaysDecade average
197811
198043.8
198233.8
198373.8
198513.8
198743.8
First to last qualifying date each year at Coopers Rock Sf For each year, a bar from the first to the last day at Coopers Rock Sf meeting 30 C (86 F). 1978: 27 June 1978 to 27 June 19781980: 16 July 1980 to 21 July 19801982: 17 July 1982 to 9 August 19821983: 3 July 1983 to 2 September 19831985: 15 August 1985 to 15 August 19851987: 16 June 1987 to 18 August 1987197819801982198319851987JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Coopers Rock Sf meeting 30 C (86 F).
First to last qualifying date each year at Coopers Rock Sf
YearFirst dateLast date
19781978-06-271978-06-27
19801980-07-161980-07-21
19821982-07-171982-08-09
19831983-07-031983-09-02
19851985-08-151985-08-15
19871987-06-161987-08-18

Every Fixed Threshold

Fixed thresholds at Coopers Rock Sf
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days6719834
90 F (32.2 C): Days1319833
0 C (32 F): Ice days (max952198031
0 C (32 F): Frost days (min81521981104
-10 C (14 F): Days with min844197941
-20 C (-4 F): Days with min7819813
-30 C (-22 F): Days with min2119821
20 C (68 F): Tropical nights (min6419802
10 mm (0.39 in): Days with 10 mm or more rain1156197948
25 mm (0.98 in): Days with 25 mm or more rain1117198011
50 mm (1.97 in): Days with 50 mm or more rain6219842
10 cm (3.9 in): Days with 10 cm or more snowfall1910197911
25 cm (9.8 in): Days with 25 cm or more snowfall6119871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1978.

Download the Data

  • Data for Coopers Rock Sf 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).