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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Gibraltar Dam Threshold Days by Year (USC00043401)

6 fixed thresholds counted per year at Gibraltar Dam (USC00043401): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gibraltar Dam Thresholds

  • Gibraltar Dam: days with 10 mm (0.39 in) or more of precipitation in 9 years, most in 1952 with 24.
  • Gibraltar Dam: days with 25 mm (0.98 in) or more of precipitation in 9 years, most in 1952 with 14.
  • Gibraltar Dam: days with 50 mm (1.97 in) or more of precipitation in 7 years, most in 1952 with 7.
  • Gibraltar Dam: days with 10 cm (3.9 in) or more of snowfall in 2 years, most in 1949 with 1.
  • 6 fixed thresholds have at least one qualifying day at Gibraltar Dam.
9 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Gibraltar Dam Days per year at Gibraltar Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1952. 01020301949: 141950: 121951: 161952: 241953: 31954: 161955: 201956: 71957: 21194919501951195219531954195519561957
Days per year at Gibraltar Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1952.
Days with 10 mm (0.39 in) or more of precipitation per year at Gibraltar Dam
YearDaysDecade average
19491414
19501214.9
19511614.9
19522414.9
1953314.9
19541614.9
19552014.9
1956714.9
19572114.9
First to last qualifying date each year at Gibraltar Dam For each year, a bar from the first to the last day at Gibraltar Dam meeting 10 mm (0.39 in). 1949: 11 January 1949 to 18 December 19491950: 8 January 1950 to 19 November 19501951: 10 January 1951 to 30 December 19511952: 7 January 1952 to 30 December 19521953: 13 January 1953 to 14 November 19531954: 12 January 1954 to 10 December 19541955: 1 January 1955 to 31 December 19551956: 25 January 1956 to 9 May 19561957: 4 January 1957 to 17 December 195719491951195319551957JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gibraltar Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Gibraltar Dam
YearFirst dateLast date
19491949-01-111949-12-18
19501950-01-081950-11-19
19511951-01-101951-12-30
19521952-01-071952-12-30
19531953-01-131953-11-14
19541954-01-121954-12-10
19551955-01-011955-12-31
19561956-01-251956-05-09
19571957-01-041957-12-17

Every Fixed Threshold

Fixed thresholds at Gibraltar Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain924195221
25 mm (0.98 in): Days with 25 mm or more rain91419529
50 mm (1.97 in): Days with 50 mm or more rain7719526
100 mm (3.94 in): Days with 100 mm or more rain1319523
200 mm (7.87 in): Days with 200 mm or more rain1219522
10 cm (3.9 in): Days with 10 cm or more snowfall2119491

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 Gibraltar 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).