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Built 2026-10-19 (19 October 2026)

Clarence Cannon Dam Threshold Days by Year (USC00231600)

16 fixed thresholds counted per year at Clarence Cannon Dam (USC00231600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clarence Cannon Dam Thresholds

  • Clarence Cannon Dam: days with 10 mm (0.39 in) or more of precipitation in 19 years, most in 1998 with 42.
  • Clarence Cannon Dam: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1991 with 15.
  • Clarence Cannon Dam: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1990 with 3.
  • Clarence Cannon Dam: days with 10 cm (3.9 in) or more of snowfall in 14 years, most in 1994 with 2.
  • 16 fixed thresholds have at least one qualifying day at Clarence Cannon Dam.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Clarence Cannon Dam Days per year at Clarence Cannon Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1994. 0204060801990: 551991: 751992: 481994: 781995: 661996: 621998: 682026: 7219901991199219941995199619982026
Days per year at Clarence Cannon Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 78 in 1994.
Days at or above 30 C (86 F) per year at Clarence Cannon Dam
YearDaysDecade average
19905564.6
19917564.6
19924864.6
19947864.6
19956664.6
19966264.6
19986864.6
20267272
First to last qualifying date each year at Clarence Cannon Dam For each year, a bar from the first to the last day at Clarence Cannon Dam meeting 30 C (86 F). 1990: 25 April 1990 to 28 September 19901991: 14 May 1991 to 16 September 19911992: 1 May 1992 to 18 September 19921994: 25 April 1994 to 3 October 19941995: 14 May 1995 to 15 October 19951996: 20 April 1996 to 8 September 19961998: 15 May 1998 to 30 September 19982026: 11 March 2026 to 14 October 202619901991199219941995199619982026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Clarence Cannon Dam meeting 30 C (86 F).
First to last qualifying date each year at Clarence Cannon Dam
YearFirst dateLast date
19901990-04-251990-09-28
19911991-05-141991-09-16
19921992-05-011992-09-18
19941994-04-251994-10-03
19951995-05-141995-10-15
19961996-04-201996-09-08
19981998-05-151998-09-30
20262026-03-112026-10-14

Every Fixed Threshold

Fixed thresholds at Clarence Cannon Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days878199472
35 C (95 F): Days718199414
90 F (32.2 C): Days851199140
100 F (37.8 C): Days4119907
0 C (32 F): Ice days (max83519955
0 C (32 F): Frost days (min8116199624
-10 C (14 F): Days with min84019968
-20 C (-4 F): Days with min2619966
20 C (68 F): Tropical nights (min853199548
25 C (77 F): Days with min6519956
10 mm (0.39 in): Days with 10 mm or more rain1942199829
25 mm (0.98 in): Days with 25 mm or more rain191519916
50 mm (1.97 in): Days with 50 mm or more rain17319902
100 mm (3.94 in): Days with 100 mm or more rain6119911
10 cm (3.9 in): Days with 10 cm or more snowfall14219941
25 cm (9.8 in): Days with 25 cm or more snowfall20n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1990.

Download the Data

  • Data for Clarence Cannon Dam 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).