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

Rockwood Threshold Days by Year (USC00407831)

4 fixed thresholds counted per year at Rockwood (USC00407831): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rockwood Thresholds

  • Rockwood: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1892 with 64.
  • Rockwood: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1957 with 27.
  • Rockwood: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1956 with 7.
  • Rockwood: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1928 with 1.
  • 4 fixed thresholds have at least one qualifying day at Rockwood.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rockwood Days per year at Rockwood with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 64 in 1892. 0204060801890: 481891: 571892: 641893: 421894: 401895: 411896: 441923: 481924: 401925: 331926: 521927: 431928: 511949: 521950: 581951: 601952: 351953: 431954: 361955: 511956: 491957: 581958: 311959: 441960: 421961: 41189018931896192519281951195419571960
Days per year at Rockwood with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 64 in 1892.
Days with 10 mm (0.39 in) or more of precipitation per year at Rockwood
YearDaysDecade average
18904848
18915748
18926448
18934248
18944048
18954148
18964448
19234844.5
19244044.5
19253344.5
19265244.5
19274344.5
19285144.5
19495252
19505846.5
19516046.5
19523546.5
19534346.5
19543646.5
19555146.5
19564946.5
19575846.5
19583146.5
19594446.5
19604241.5
19614141.5
First to last qualifying date each year at Rockwood For each year, a bar from the first to the last day at Rockwood meeting 10 mm (0.39 in). 1890: 16 January 1890 to 26 December 18901891: 2 January 1891 to 26 December 18911892: 2 January 1892 to 20 December 18921893: 1 January 1893 to 16 December 18931894: 5 January 1894 to 27 December 18941895: 7 January 1895 to 26 December 18951896: 22 January 1896 to 30 November 18961923: 8 January 1923 to 23 December 19231924: 1 January 1924 to 31 December 19241925: 1 January 1925 to 5 December 19251926: 5 January 1926 to 29 December 19261927: 21 January 1927 to 31 December 19271928: 18 January 1928 to 18 December 19281949: 4 January 1949 to 23 December 19491950: 3 January 1950 to 29 December 19501951: 4 January 1951 to 21 December 19511952: 5 January 1952 to 31 December 19521953: 3 January 1953 to 14 December 19531954: 11 January 1954 to 30 December 19541955: 11 January 1955 to 18 December 19551956: 19 January 1956 to 23 December 19561957: 5 January 1957 to 26 December 19571958: 14 January 1958 to 28 December 19581959: 8 January 1959 to 28 December 19591960: 3 January 1960 to 30 December 19601961: 1 January 1961 to 18 December 19611890189419241928195219561960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rockwood meeting 10 mm (0.39 in).
First to last qualifying date each year at Rockwood
YearFirst dateLast date
18901890-01-161890-12-26
18911891-01-021891-12-26
18921892-01-021892-12-20
18931893-01-011893-12-16
18941894-01-051894-12-27
18951895-01-071895-12-26
18961896-01-221896-11-30
19231923-01-081923-12-23
19241924-01-011924-12-31
19251925-01-011925-12-05
19261926-01-051926-12-29
19271927-01-211927-12-31
19281928-01-181928-12-18
19491949-01-041949-12-23
19501950-01-031950-12-29
19511951-01-041951-12-21
19521952-01-051952-12-31
19531953-01-031953-12-14
19541954-01-111954-12-30
19551955-01-111955-12-18
19561956-01-191956-12-23
19571957-01-051957-12-26
19581958-01-141958-12-28
19591959-01-081959-12-28
19601960-01-031960-12-30
19611961-01-011961-12-18

Every Fixed Threshold

Fixed thresholds at Rockwood
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2664189241
25 mm (0.98 in): Days with 25 mm or more rain2627195715
50 mm (1.97 in): Days with 50 mm or more rain25719565
100 mm (3.94 in): Days with 100 mm or more rain4119281

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1890.

Download the Data

  • Data for Rockwood 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).