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Built 2026-10-19 (19 October 2026)

Preston 7 NW Threshold Days by Year (USC00146563)

5 fixed thresholds counted per year at Preston 7 NW (USC00146563): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Preston 7 NW Thresholds

  • Preston 7 NW: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1957 with 31.
  • Preston 7 NW: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1951 with 12.
  • Preston 7 NW: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1961 with 4.
  • Preston 7 NW: days with 10 cm (3.9 in) or more of snowfall in 20 years, most in 1960 with 5.
  • 5 fixed thresholds have at least one qualifying day at Preston 7 NW.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Preston 7 NW Days per year at Preston 7 NW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1957. 0102030401941: 231942: 231943: 181944: 301945: 241946: 251950: 201951: 261952: 141954: 121955: 201956: 91957: 311958: 201959: 161960: 181961: 211962: 221963: 181964: 161965: 281966: 71969: 211970: 131971: 201972: 181973: 271974: 181975: 181976: 181977: 2219411945195219571961196519711975
Days per year at Preston 7 NW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1957.
Days with 10 mm (0.39 in) or more of precipitation per year at Preston 7 NW
YearDaysDecade average
19412323.8
19422323.8
19431823.8
19443023.8
19452423.8
19462523.8
19502018.7
19512618.7
19521418.7
19541218.7
19552018.7
1956918.7
19573118.7
19582018.7
19591618.7
19601818.9
19612118.9
19622218.9
19631818.9
19641618.9
19652818.9
1966718.9
19692118.9
19701319.3
19712019.3
19721819.3
19732719.3
19741819.3
19751819.3
19761819.3
19772219.3
First to last qualifying date each year at Preston 7 NW For each year, a bar from the first to the last day at Preston 7 NW meeting 10 mm (0.39 in). 1941: 14 January 1941 to 24 October 19411942: 17 March 1942 to 5 December 19421943: 2 February 1943 to 10 December 19431944: 28 February 1944 to 5 December 19441945: 18 January 1945 to 14 October 19451946: 18 February 1946 to 4 December 19461950: 16 April 1950 to 14 September 19501951: 25 February 1951 to 5 November 19511952: 3 March 1952 to 19 December 19521954: 30 April 1954 to 26 October 19541955: 4 February 1955 to 2 October 19551956: 9 April 1956 to 30 October 19561957: 5 March 1957 to 18 November 19571958: 27 February 1958 to 17 November 19581959: 26 March 1959 to 13 October 19591960: 14 January 1960 to 11 December 19601961: 5 February 1961 to 16 November 19611962: 15 February 1962 to 16 November 19621963: 3 April 1963 to 21 October 19631964: 27 May 1964 to 10 December 19641965: 26 January 1965 to 2 December 19651966: 9 February 1966 to 27 December 19661969: 14 February 1969 to 16 September 19691970: 2 April 1970 to 9 October 19701971: 22 February 1971 to 23 November 19711972: 26 April 1972 to 30 December 19721973: 28 January 1973 to 4 December 19731974: 10 March 1974 to 11 December 19741975: 4 February 1975 to 20 November 19751976: 4 March 1976 to 27 October 19761977: 2 January 1977 to 5 December 197719411945195219571961196519711975JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Preston 7 NW meeting 10 mm (0.39 in).
First to last qualifying date each year at Preston 7 NW
YearFirst dateLast date
19411941-01-141941-10-24
19421942-03-171942-12-05
19431943-02-021943-12-10
19441944-02-281944-12-05
19451945-01-181945-10-14
19461946-02-181946-12-04
19501950-04-161950-09-14
19511951-02-251951-11-05
19521952-03-031952-12-19
19541954-04-301954-10-26
19551955-02-041955-10-02
19561956-04-091956-10-30
19571957-03-051957-11-18
19581958-02-271958-11-17
19591959-03-261959-10-13
19601960-01-141960-12-11
19611961-02-051961-11-16
19621962-02-151962-11-16
19631963-04-031963-10-21
19641964-05-271964-12-10
19651965-01-261965-12-02
19661966-02-091966-12-27
19691969-02-141969-09-16
19701970-04-021970-10-09
19711971-02-221971-11-23
19721972-04-261972-12-30
19731973-01-281973-12-04
19741974-03-101974-12-11
19751975-02-041975-11-20
19761976-03-041976-10-27
19771977-01-021977-12-05

Every Fixed Threshold

Fixed thresholds at Preston 7 NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3131195722
25 mm (0.98 in): Days with 25 mm or more rain311219516
50 mm (1.97 in): Days with 50 mm or more rain21419612
100 mm (3.94 in): Days with 100 mm or more rain1119731
10 cm (3.9 in): Days with 10 cm or more snowfall20519601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

  • Data for Preston 7 NW 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).