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

Loch Raven Dam Threshold Days by Year (USC00185340)

7 fixed thresholds counted per year at Loch Raven Dam (USC00185340): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Loch Raven Dam Thresholds

  • Loch Raven Dam: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1975 with 53.
  • Loch Raven Dam: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1975 with 19.
  • Loch Raven Dam: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1952 with 8.
  • Loch Raven Dam: days with 10 cm (3.9 in) or more of snowfall in 15 years, most in 1966 with 6.
  • 7 fixed thresholds have at least one qualifying day at Loch Raven Dam.
25 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Loch Raven Dam Days per year at Loch Raven Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1975. 02040601951: 371952: 441953: 381954: 271955: 341956: 441958: 321959: 361960: 361961: 401962: 361963: 351964: 341965: 301966: 331967: 331968: 371969: 331970: 351971: 461972: 441973: 431974: 361975: 531976: 39195119541958196119641967197019731976
Days per year at Loch Raven Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 53 in 1975.
Days with 10 mm (0.39 in) or more of precipitation per year at Loch Raven Dam
YearDaysDecade average
19513736.5
19524436.5
19533836.5
19542736.5
19553436.5
19564436.5
19583236.5
19593636.5
19603634.7
19614034.7
19623634.7
19633534.7
19643434.7
19653034.7
19663334.7
19673334.7
19683734.7
19693334.7
19703542.3
19714642.3
19724442.3
19734342.3
19743642.3
19755342.3
19763942.3
First to last qualifying date each year at Loch Raven Dam For each year, a bar from the first to the last day at Loch Raven Dam meeting 10 mm (0.39 in). 1951: 11 January 1951 to 21 December 19511952: 2 January 1952 to 21 December 19521953: 8 January 1953 to 14 December 19531954: 11 January 1954 to 30 December 19541955: 1 February 1955 to 19 November 19551956: 12 January 1956 to 23 December 19561958: 14 January 1958 to 4 December 19581959: 2 January 1959 to 29 December 19591960: 3 January 1960 to 30 December 19601961: 1 January 1961 to 24 December 19611962: 6 January 1962 to 25 December 19621963: 12 January 1963 to 9 December 19631964: 1 January 1964 to 26 December 19641965: 8 January 1965 to 8 October 19651966: 6 January 1966 to 29 December 19661967: 14 January 1967 to 29 December 19671968: 14 January 1968 to 23 December 19681969: 18 January 1969 to 31 December 19691970: 7 January 1970 to 17 December 19701971: 1 January 1971 to 7 December 19711972: 2 January 1972 to 31 December 19721973: 4 January 1973 to 9 December 19731974: 9 January 1974 to 16 December 19741975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 7 December 19761951195519601964196819721976JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Loch Raven Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Loch Raven Dam
YearFirst dateLast date
19511951-01-111951-12-21
19521952-01-021952-12-21
19531953-01-081953-12-14
19541954-01-111954-12-30
19551955-02-011955-11-19
19561956-01-121956-12-23
19581958-01-141958-12-04
19591959-01-021959-12-29
19601960-01-031960-12-30
19611961-01-011961-12-24
19621962-01-061962-12-25
19631963-01-121963-12-09
19641964-01-011964-12-26
19651965-01-081965-10-08
19661966-01-061966-12-29
19671967-01-141967-12-29
19681968-01-141968-12-23
19691969-01-181969-12-31
19701970-01-071970-12-17
19711971-01-011971-12-07
19721972-01-021972-12-31
19731973-01-041973-12-09
19741974-01-091974-12-16
19751975-01-011975-12-31
19761976-01-011976-12-07

Every Fixed Threshold

Fixed thresholds at Loch Raven Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2553197539
25 mm (0.98 in): Days with 25 mm or more rain2519197513
50 mm (1.97 in): Days with 50 mm or more rain20819523
100 mm (3.94 in): Days with 100 mm or more rain2119601
10 cm (3.9 in): Days with 10 cm or more snowfall15619661
25 cm (9.8 in): Days with 25 cm or more snowfall4219581
50 cm (19.7 in): Days with 50 cm or more snowfall1119581

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Loch Raven 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).