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

Smithfield Threshold Days by Year (USC00447864)

5 fixed thresholds counted per year at Smithfield (USC00447864): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Smithfield Thresholds

  • Smithfield: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1962 with 45.
  • Smithfield: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1943 with 20.
  • Smithfield: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1960 with 5.
  • Smithfield: days with 10 cm (3.9 in) or more of snowfall in 6 years, most in 1958 with 4.
  • 5 fixed thresholds have at least one qualifying day at Smithfield.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Smithfield Days per year at Smithfield with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1962. 02040601942: 361943: 341944: 411946: 361947: 381949: 391950: 371951: 321952: 331953: 231954: 361955: 391956: 431957: 421958: 421959: 361960: 401961: 381962: 451963: 281964: 331965: 221966: 3019421946195019531956195919621965
Days per year at Smithfield with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1962.
Days with 10 mm (0.39 in) or more of precipitation per year at Smithfield
YearDaysDecade average
19423637.3
19433437.3
19444137.3
19463637.3
19473837.3
19493937.3
19503736.3
19513236.3
19523336.3
19532336.3
19543636.3
19553936.3
19564336.3
19574236.3
19584236.3
19593636.3
19604033.7
19613833.7
19624533.7
19632833.7
19643333.7
19652233.7
19663033.7
First to last qualifying date each year at Smithfield For each year, a bar from the first to the last day at Smithfield meeting 10 mm (0.39 in). 1942: 4 January 1942 to 30 December 19421943: 27 January 1943 to 26 December 19431944: 3 January 1944 to 30 December 19441946: 17 January 1946 to 20 December 19461947: 1 January 1947 to 16 December 19471949: 6 January 1949 to 26 December 19491950: 12 January 1950 to 10 December 19501951: 7 January 1951 to 26 December 19511952: 10 January 1952 to 31 December 19521953: 7 February 1953 to 14 December 19531954: 11 January 1954 to 18 December 19541955: 11 January 1955 to 9 December 19551956: 10 January 1956 to 23 December 19561957: 5 January 1957 to 29 December 19571958: 25 January 1958 to 29 December 19581959: 2 January 1959 to 19 December 19591960: 3 January 1960 to 21 December 19601961: 1 January 1961 to 18 December 19611962: 1 January 1962 to 29 December 19621963: 18 January 1963 to 23 December 19631964: 1 January 1964 to 28 December 19641965: 16 January 1965 to 25 December 19651966: 6 January 1966 to 29 December 196619421946195019531956195919621965JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Smithfield meeting 10 mm (0.39 in).
First to last qualifying date each year at Smithfield
YearFirst dateLast date
19421942-01-041942-12-30
19431943-01-271943-12-26
19441944-01-031944-12-30
19461946-01-171946-12-20
19471947-01-011947-12-16
19491949-01-061949-12-26
19501950-01-121950-12-10
19511951-01-071951-12-26
19521952-01-101952-12-31
19531953-02-071953-12-14
19541954-01-111954-12-18
19551955-01-111955-12-09
19561956-01-101956-12-23
19571957-01-051957-12-29
19581958-01-251958-12-29
19591959-01-021959-12-19
19601960-01-031960-12-21
19611961-01-011961-12-18
19621962-01-011962-12-29
19631963-01-181963-12-23
19641964-01-011964-12-28
19651965-01-161965-12-25
19661966-01-061966-12-29

Every Fixed Threshold

Fixed thresholds at Smithfield
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2345196230
25 mm (0.98 in): Days with 25 mm or more rain2320194311
50 mm (1.97 in): Days with 50 mm or more rain22519602
100 mm (3.94 in): Days with 100 mm or more rain5119491
10 cm (3.9 in): Days with 10 cm or more snowfall6419582

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Smithfield 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).