Built 2026-10-19 (19 October 2026)

Brighton Dam Threshold Days by Year (USC00181125)

18 fixed thresholds counted per year at Brighton Dam (USC00181125): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Brighton Dam Thresholds

  • Brighton Dam: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1989 with 59.
  • Brighton Dam: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1979 with 21.
  • Brighton Dam: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1983 with 6.
  • Brighton Dam: days with 10 cm (3.9 in) or more of snowfall in 28 years, most in 1987 with 5.
  • 18 fixed thresholds have at least one qualifying day at Brighton Dam.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Brighton Dam Days per year at Brighton Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 1953. 0204060801949: 521950: 471951: 651952: 601953: 761954: 562014: 232015: 432016: 54194919501951195219531954201420152016
Days per year at Brighton Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 76 in 1953.
Days at or above 30 C (86 F) per year at Brighton Dam
YearDaysDecade average
19495252
19504760.8
19516560.8
19526060.8
19537660.8
19545660.8
20142340
20154340
20165440
First to last qualifying date each year at Brighton Dam For each year, a bar from the first to the last day at Brighton Dam meeting 30 C (86 F). 1949: 4 May 1949 to 10 October 19491950: 19 April 1950 to 3 September 19501951: 29 April 1951 to 6 October 19511952: 2 June 1952 to 14 September 19521953: 25 April 1953 to 29 September 19531954: 2 May 1954 to 14 October 19542014: 13 May 2014 to 7 September 20142015: 19 May 2015 to 10 September 20152016: 28 May 2016 to 24 September 201619491951195320142016JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Brighton Dam meeting 30 C (86 F).
First to last qualifying date each year at Brighton Dam
YearFirst dateLast date
19491949-05-041949-10-10
19501950-04-191950-09-03
19511951-04-291951-10-06
19521952-06-021952-09-14
19531953-04-251953-09-29
19541954-05-021954-10-14
20142014-05-132014-09-07
20152015-05-192015-09-10
20162016-05-282016-09-24

Every Fixed Threshold

Fixed thresholds at Brighton Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days976195354
35 C (95 F): Days62019531
90 F (32.2 C): Days945195323
100 F (37.8 C): Days3219542
0 C (32 F): Ice days (max724201410
0 C (32 F): Frost days (min9128195499
-10 C (14 F): Days with min927201513
-20 C (-4 F): Days with min1119511
20 C (68 F): Tropical nights (min943201643
25 C (77 F): Days with min1320163
10 mm (0.39 in): Days with 10 mm or more rain4859198937
25 mm (0.98 in): Days with 25 mm or more rain4821197914
50 mm (1.97 in): Days with 50 mm or more rain43619833
100 mm (3.94 in): Days with 100 mm or more rain7119561
200 mm (7.87 in): Days with 200 mm or more rain10n/a1
10 cm (3.9 in): Days with 10 cm or more snowfall28519871
25 cm (9.8 in): Days with 25 cm or more snowfall5119791
50 cm (19.7 in): Days with 50 cm or more snowfall2120101

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Brighton 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 (2025-12-31).