Built 2026-10-19 (19 October 2026)

Bighorn Dam Threshold Days by Year (CA0030506GN)

15 fixed thresholds counted per year at Bighorn Dam (CA0030506GN): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Bighorn Dam Thresholds

  • Bighorn Dam: days with a maximum temperature at or below 0 C (32 F) in 13 years, most in 1975 with 95.
  • Bighorn Dam: nights with a minimum temperature at or below 0 C (32 F) in 13 years, most in 1970 with 227.
  • Bighorn Dam: nights with a minimum temperature at or below -10 C (14 F) in 13 years, most in 1982 with 120.
  • Bighorn Dam: nights with a minimum temperature at or below -20 C (-4 F) in 13 years, most in 1979 with 48.
  • 15 fixed thresholds have at least one qualifying day at Bighorn Dam.
6 years with a qualifying day
Days at or above 30 C (86 F) per year at Bighorn Dam Days per year at Bighorn Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 14 in 1970. 0510151970: 141971: 101975: 61979: 41981: 31983: 2197019711975197919811983
Days per year at Bighorn Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 14 in 1970.
Days at or above 30 C (86 F) per year at Bighorn Dam
YearDaysDecade average
1970148.5
1971108.5
197568.5
197948.5
198132.5
198322.5
First to last qualifying date each year at Bighorn Dam For each year, a bar from the first to the last day at Bighorn Dam meeting 30 C (86 F). 1970: 3 June 1970 to 23 August 19701971: 19 July 1971 to 12 August 19711975: 3 July 1975 to 11 July 19751979: 17 July 1979 to 20 July 19791981: 19 July 1981 to 18 September 19811983: 31 July 1983 to 10 August 1983197019711975197919811983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Bighorn Dam meeting 30 C (86 F).
First to last qualifying date each year at Bighorn Dam
YearFirst dateLast date
19701970-06-031970-08-23
19711971-07-191971-08-12
19751975-07-031975-07-11
19791979-07-171979-07-20
19811981-07-191981-09-18
19831983-07-311983-08-10

Every Fixed Threshold

Fixed thresholds at Bighorn Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days61419702
90 F (32.2 C): Days3319701
0 C (32 F): Ice days (max1395197567
0 C (32 F): Frost days (min132271970221
-10 C (14 F): Days with min13120198275
-20 C (-4 F): Days with min1348197923
-30 C (-22 F): Days with min131519706
-40 C (-40 F): Days with min4319722
20 C (68 F): Tropical nights (min1119711
10 mm (0.39 in): Days with 10 mm or more rain132019729
25 mm (0.98 in): Days with 25 mm or more rain9419811
50 mm (1.97 in): Days with 50 mm or more rain1119811
10 cm (3.9 in): Days with 10 cm or more snowfall13919723
25 cm (9.8 in): Days with 25 cm or more snowfall3219812
50 cm (19.7 in): Days with 50 cm or more snowfall1119811

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1970.

Download the Data

  • Data for Bighorn 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).