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Built 2026-10-19 (19 October 2026)

Cooper Lake Project Threshold Days by Year (USC00502144)

12 fixed thresholds counted per year at Cooper Lake Project (USC00502144): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cooper Lake Project Thresholds

  • Cooper Lake Project: days with 10 cm (3.9 in) or more of snowfall in 38 years, most in 1979 with 14.
  • Cooper Lake Project: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1981 with 45.
  • Cooper Lake Project: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1966 with 102.
  • Cooper Lake Project: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1959 with 225.
  • 12 fixed thresholds have at least one qualifying day at Cooper Lake Project.
33 years with a qualifying day
Nights at or below 0 C (32 F) per year at Cooper Lake Project Days per year at Cooper Lake Project with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 225 in 1959. 01002003001959: 2251962: 1881963: 1691964: 1991965: 1991966: 2021967: 1771968: 1731969: 1501970: 1621971: 1991972: 2011973: 1841974: 1691975: 1861976: 1811978: 1531979: 1561980: 1611981: 1571982: 1981983: 1821984: 1651989: 1811990: 1721991: 1581992: 1991994: 1491995: 1621997: 2131998: 1751999: 2092001: 151195919651969197319781982199019952001
Days per year at Cooper Lake Project with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 225 in 1959.
Nights at or below 0 C (32 F) per year at Cooper Lake Project
YearDaysDecade average
1959225225
1962188182.1
1963169182.1
1964199182.1
1965199182.1
1966202182.1
1967177182.1
1968173182.1
1969150182.1
1970162176.8
1971199176.8
1972201176.8
1973184176.8
1974169176.8
1975186176.8
1976181176.8
1978153176.8
1979156176.8
1980161174
1981157174
1982198174
1983182174
1984165174
1989181174
1990172179.6
1991158179.6
1992199179.6
1994149179.6
1995162179.6
1997213179.6
1998175179.6
1999209179.6
2001151151
First to last qualifying date each year at Cooper Lake Project For each year, a bar from the first to the last day at Cooper Lake Project meeting 0 C (32 F). 1959: 1 January 1959 to 31 December 19591962: 2 January 1962 to 31 December 19621963: 1 January 1963 to 31 December 19631964: 2 January 1964 to 31 December 19641965: 1 January 1965 to 31 December 19651966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 31 December 19671968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 31 December 19691970: 2 January 1970 to 31 December 19701971: 1 January 1971 to 31 December 19711972: 1 January 1972 to 31 December 19721973: 1 January 1973 to 31 December 19731974: 1 January 1974 to 31 December 19741975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 30 December 19761978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801981: 2 January 1981 to 31 December 19811982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 31 December 19831984: 1 January 1984 to 31 December 19841989: 2 January 1989 to 30 December 19891990: 2 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 2 January 1992 to 30 December 19921994: 1 January 1994 to 29 December 19941995: 2 January 1995 to 31 December 19951997: 2 January 1997 to 31 December 19971998: 1 January 1998 to 29 December 19981999: 2 January 1999 to 31 December 19992001: 1 January 2001 to 30 December 20011959196619711976198219911998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cooper Lake Project meeting 0 C (32 F).
First to last qualifying date each year at Cooper Lake Project
YearFirst dateLast date
19591959-01-011959-12-31
19621962-01-021962-12-31
19631963-01-011963-12-31
19641964-01-021964-12-31
19651965-01-011965-12-31
19661966-01-011966-12-31
19671967-01-011967-12-31
19681968-01-011968-12-31
19691969-01-011969-12-31
19701970-01-021970-12-31
19711971-01-011971-12-31
19721972-01-011972-12-31
19731973-01-011973-12-31
19741974-01-011974-12-31
19751975-01-011975-12-31
19761976-01-011976-12-30
19781978-01-011978-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19811981-01-021981-12-31
19821982-01-011982-12-31
19831983-01-011983-12-31
19841984-01-011984-12-31
19891989-01-021989-12-30
19901990-01-021990-12-31
19911991-01-011991-12-31
19921992-01-021992-12-30
19941994-01-011994-12-29
19951995-01-021995-12-31
19971997-01-021997-12-31
19981998-01-011998-12-29
19991999-01-021999-12-31
20012001-01-012001-12-30

Every Fixed Threshold

Fixed thresholds at Cooper Lake Project
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max34102196627
0 C (32 F): Frost days (min332251959151
-10 C (14 F): Days with min3394197229
-20 C (-4 F): Days with min313119713
-30 C (-22 F): Days with min5319722
10 mm (0.39 in): Days with 10 mm or more rain3545198125
25 mm (0.98 in): Days with 25 mm or more rain331419767
50 mm (1.97 in): Days with 50 mm or more rain19319632
100 mm (3.94 in): Days with 100 mm or more rain1119921
10 cm (3.9 in): Days with 10 cm or more snowfall381419791
25 cm (9.8 in): Days with 25 cm or more snowfall23619915
50 cm (19.7 in): Days with 50 cm or more snowfall1119981

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Cooper Lake Project 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).