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Built 2026-10-19 (19 October 2026)

Oak Knoll W C Threshold Days by Year (USC00046328)

6 fixed thresholds counted per year at Oak Knoll W C (USC00046328): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oak Knoll W C Thresholds

  • Oak Knoll W C: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1953 with 29.
  • Oak Knoll W C: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1962 with 9.
  • Oak Knoll W C: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 1950 with 2.
  • Oak Knoll W C: days with 10 cm (3.9 in) or more of snowfall in 16 years, most in 1950 with 6.
  • 6 fixed thresholds have at least one qualifying day at Oak Knoll W C.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Oak Knoll W C Days per year at Oak Knoll W C with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1953. 01020301944: 161946: 121948: 171949: 101950: 191951: 241952: 171953: 291954: 201955: 201956: 221957: 251958: 241959: 101960: 161961: 221962: 241963: 211964: 231965: 191967: 241968: 251969: 211971: 181999: 162000: 172001: 122002: 152003: 152004: 192005: 232008: 92009: 112010: 182018: 132021: 142025: 31944195019541958196219671999200320092025
Days per year at Oak Knoll W C with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1953.
Days with 10 mm (0.39 in) or more of precipitation per year at Oak Knoll W C
YearDaysDecade average
19441613.8
19461213.8
19481713.8
19491013.8
19501921
19512421
19521721
19532921
19542021
19552021
19562221
19572521
19582421
19591021
19601621.7
19612221.7
19622421.7
19632121.7
19642321.7
19651921.7
19672421.7
19682521.7
19692121.7
19711818
19991616
20001715.1
20011215.1
20021515.1
20031515.1
20041915.1
20052315.1
2008915.1
20091115.1
20101815.5
20181315.5
2021148.5
202538.5
First to last qualifying date each year at Oak Knoll W C For each year, a bar from the first to the last day at Oak Knoll W C meeting 10 mm (0.39 in). 1944: 1 January 1944 to 1 December 19441946: 3 January 1946 to 23 November 19461948: 5 January 1948 to 14 December 19481949: 7 February 1949 to 18 December 19491950: 11 January 1950 to 14 December 19501951: 15 January 1951 to 29 December 19511952: 10 January 1952 to 8 December 19521953: 7 January 1953 to 19 December 19531954: 3 January 1954 to 31 December 19541955: 20 April 1955 to 23 December 19551956: 5 January 1956 to 11 December 19561957: 13 January 1957 to 27 December 19571958: 12 January 1958 to 27 December 19581959: 12 January 1959 to 24 December 19591960: 8 January 1960 to 2 December 19601961: 31 January 1961 to 21 December 19611962: 19 January 1962 to 17 December 19621963: 30 January 1963 to 9 December 19631964: 7 January 1964 to 31 December 19641965: 1 January 1965 to 28 December 19651967: 5 January 1967 to 18 December 19671968: 10 January 1968 to 26 December 19681969: 11 January 1969 to 23 December 19691971: 14 January 1971 to 26 November 19711999: 15 January 1999 to 2 December 19992000: 10 January 2000 to 14 December 20002001: 24 January 2001 to 31 December 20012002: 2 January 2002 to 31 December 20022003: 14 January 2003 to 24 December 20032004: 1 January 2004 to 27 December 20042005: 3 January 2005 to 31 December 20052008: 4 January 2008 to 6 November 20082009: 11 February 2009 to 29 December 20092010: 13 January 2010 to 29 December 20102018: 22 January 2018 to 21 December 20182021: 5 January 2021 to 23 December 20212025: 14 February 2025 to 17 March 202519441951195619611967200020052021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Oak Knoll W C meeting 10 mm (0.39 in).
First to last qualifying date each year at Oak Knoll W C
YearFirst dateLast date
19441944-01-011944-12-01
19461946-01-031946-11-23
19481948-01-051948-12-14
19491949-02-071949-12-18
19501950-01-111950-12-14
19511951-01-151951-12-29
19521952-01-101952-12-08
19531953-01-071953-12-19
19541954-01-031954-12-31
19551955-04-201955-12-23
19561956-01-051956-12-11
19571957-01-131957-12-27
19581958-01-121958-12-27
19591959-01-121959-12-24
19601960-01-081960-12-02
19611961-01-311961-12-21
19621962-01-191962-12-17
19631963-01-301963-12-09
19641964-01-071964-12-31
19651965-01-011965-12-28
19671967-01-051967-12-18
19681968-01-101968-12-26
19691969-01-111969-12-23
19711971-01-141971-11-26
19991999-01-151999-12-02
20002000-01-102000-12-14
20012001-01-242001-12-31
20022002-01-022002-12-31
20032003-01-142003-12-24
20042004-01-012004-12-27
20052005-01-032005-12-31
20082008-01-042008-11-06
20092009-02-112009-12-29
20102010-01-132010-12-29
20182018-01-222018-12-21
20212021-01-052021-12-23
20252025-02-142025-03-17

Every Fixed Threshold

Fixed thresholds at Oak Knoll W C
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain372919533
25 mm (0.98 in): Days with 25 mm or more rain34919622
50 mm (1.97 in): Days with 50 mm or more rain20219501
100 mm (3.94 in): Days with 100 mm or more rain1119481
10 cm (3.9 in): Days with 10 cm or more snowfall16619501
25 cm (9.8 in): Days with 25 cm or more snowfall6119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

Download the Data

  • Data for Oak Knoll W C 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).