Daily records
Page built 2026-10-16
Data as of 2025-12-31
Search
Built 2026-10-16 (16 October 2026)

Oak Knoll W C Weather Records (USC00046328)

Record envelope, standing records and threshold days for Oak Knoll W C (USC00046328), California, United States, with 83 years of record.

Key Facts for Oak Knoll W C

  • Oak Knoll W C (USC00046328) is a weather station in California, United States at 41.84 latitude and -122.85 longitude, 604 m (1,980 ft) above sea level.
  • The station reports from 1943 to 2025, 83 years of record.
  • 0 records set at Oak Knoll W C still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Oak Knoll W C set a monthly record daily precipitation of 54.9 mm (2.2 in) on 17 March 2025.

About the Station

  • Location: California, United States, 41.84 latitude, -122.85 longitude.
  • Elevation: 604 m (1,980 ft).
  • Period of record: 1943 to 2025, 83 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Oak Knoll W C, with 2026 drawn through them The band shows the record high and record low for each calendar day at Oak Knoll W C. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Oak Knoll W C. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Oak Knoll W C, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Oak Knoll W C by the year they were set 0 records at Oak Knoll W C still stand. 00000000000
0 records at Oak Knoll W C still stand.
Standing records at Oak Knoll W C by the year they were set
Year setStanding records

Wettest Day of Each Month

Jan: 100.3 mm (3.9 in)
Record daily precipitation for each month at Oak Knoll W C The wettest day on record for each calendar month at Oak Knoll W C. The most was 100.3 mm (3.9 in) on 5 January 1948. 050100150 Jan: 100.3 mm (3.9 in), 5 January 1948 Jan Feb: 62.7 mm (2.5 in), 7 February 1999 Feb Mar: 54.9 mm (2.2 in), 17 March 2025 Mar Apr: 45.7 mm (1.8 in), 27 April 1953 Apr May: 27.7 mm (1.1 in), 5 May 2009 May Jun: 23.4 mm (0.9 in), 16 June 1950 Jun Jul: 25.4 mm (1.0 in), 29 July 1944 Jul Aug: 50.0 mm (2.0 in), 31 August 2007 Aug Sep: 43.7 mm (1.7 in), 25 September 2014 Sep Oct: 69.9 mm (2.8 in), 25 October 2010 Oct Nov: 68.6 mm (2.7 in), 7 November 2005 Nov Dec: 87.6 mm (3.4 in), 31 December 2012 Dec
The wettest day on record for each calendar month at Oak Knoll W C. The most was 100.3 mm (3.9 in) on 5 January 1948.
Record daily precipitation for each month at Oak Knoll W C
MonthRecord daily precipitation (mm)Date
Jan100.3 mm (3.9 in)5 January 1948
Feb62.7 mm (2.5 in)7 February 1999
Mar54.9 mm (2.2 in)17 March 2025
Apr45.7 mm (1.8 in)27 April 1953
May27.7 mm (1.1 in)5 May 2009
Jun23.4 mm (0.9 in)16 June 1950
Jul25.4 mm (1.0 in)29 July 1944
Aug50.0 mm (2.0 in)31 August 2007
Sep43.7 mm (1.7 in)25 September 2014
Oct69.9 mm (2.8 in)25 October 2010
Nov68.6 mm (2.7 in)7 November 2005
Dec87.6 mm (3.4 in)31 December 2012

Latest Records

20
Latest records at Oak Knoll W C
DateStationRecordValueBeat old record byOld record stoodSignificance
17 March 2025Oak Knoll W C, USmonthly rain54.9 mm (2.2 in)7.9 mm (0.31 in)68 years49 of 100 (Notable)
24 February 2025Oak Knoll W C, USdaily rain33.8 mm (1.3 in)8.1 mm (0.32 in)68 years35 of 100 (Notable)
26 September 2023Oak Knoll W C, USdaily rain13.5 mm (0.5 in)7.1 mm (0.28 in)65 years20 of 100 (Routine)
4 July 2022Oak Knoll W C, USdaily rain1.8 mm (0.07 in)1.0 mm (0.04 in)57 years20 of 100 (Routine)
3 July 2022Oak Knoll W C, USdaily rain0.5 mm (0.02 in)0.2 mm (0.01 in)73 years20 of 100 (Routine)
22 October 2021Oak Knoll W C, USdaily rain15.5 mm (0.6 in)1.5 mm (0.06 in)75 years20 of 100 (Routine)
28 September 2021Oak Knoll W C, USdaily rain4.3 mm (0.17 in)1.8 mm (0.07 in)59 years20 of 100 (Routine)
17 December 2020Oak Knoll W C, USdaily rain27.4 mm (1.1 in)6.3 mm (0.25 in)63 years30 of 100 (Routine)
31 May 2020Oak Knoll W C, USdaily rain20.3 mm (0.8 in)8.9 mm (0.35 in)64 years20 of 100 (Routine)
5 September 2019Oak Knoll W C, USdaily rain3.6 mm (0.14 in)0.3 mm (0.01 in)18 years12 of 100 (Routine)
17 May 2019Oak Knoll W C, USdaily rain15.2 mm (0.6 in)7.6 mm (0.30 in)46 years20 of 100 (Routine)
9 April 2019Oak Knoll W C, USdaily rain13.5 mm (0.5 in)5.9 mm (0.23 in)17 years20 of 100 (Routine)
27 February 2019Oak Knoll W C, USdaily rain38.4 mm (1.5 in)14.0 mm (0.6 in)53 years36 of 100 (Notable)
21 February 2019Oak Knoll W C, USdaily snowfall2.5 cm (1.0 in)0.2 cm (0.1 in)68 years20 of 100 (Routine)
21 February 2019Oak Knoll W C, USdaily snow depth (Tie)2.5 cm (1.0 in)tie63 years6 of 100 (Routine)
15 February 2019Oak Knoll W C, USdaily snowfall2.5 cm (1.0 in)2.5 cm (1.0 in)69 years20 of 100 (Routine)
15 February 2019Oak Knoll W C, USdaily snow depth2.5 cm (1.0 in)2.5 cm (1.0 in)68 years20 of 100 (Routine)
9 February 2019Oak Knoll W C, USdaily snowfall7.6 cm (3.0 in)2.5 cm (1.0 in)59 years27 of 100 (Routine)
9 February 2019Oak Knoll W C, USdaily rain25.4 mm (1.0 in)1.0 mm (0.04 in)1 year7 of 100 (Routine)
26 May 2018Oak Knoll W C, USdaily rain16.5 mm (0.6 in)1.5 mm (0.06 in)72 years20 of 100 (Routine)

Extremes by Year

1943 to 2025
Yearly extremes at Oak Knoll W C: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)100.3 mm (3.9 in)194848.3 mm (1.9 in)57
Wettest five days (Rx5day)199.1 mm (7.8 in)196495.0 mm (3.7 in)57
Longest dry spell (CDD)119 days200553 days57

Wettest day (Rx1day)

Wettest day (Rx1day) at Oak Knoll W C by year The wettest day of the year at Oak Knoll W C, 1943 to 2025. The record is 100.3 mm (3.9 in) in 1948, marked on the chart; the median year is 48.3 mm (1.9 in). 02550751001251960198020002020Record: 100.3 mm (3.9 in) in 1948
The wettest day of the year at Oak Knoll W C, 1943 to 2025. The record is 100.3 mm (3.9 in) in 1948, marked on the chart; the median year is 48.3 mm (1.9 in).
Wettest day (Rx1day) at Oak Knoll W C by year
YearWettest day (Rx1day)
19439.7 mm (0.38 in)
194430.0 mm (1.2 in)
194535.3 mm (1.4 in)
194667.3 mm (2.6 in)
194735.6 mm (1.4 in)
1948100.3 mm (3.9 in)
194924.6 mm (1.0 in)
195064.5 mm (2.5 in)
195144.7 mm (1.8 in)
195235.6 mm (1.4 in)
195352.6 mm (2.1 in)
195448.3 mm (1.9 in)
195566.3 mm (2.6 in)
195650.5 mm (2.0 in)
195750.3 mm (2.0 in)
195846.0 mm (1.8 in)
195933.8 mm (1.3 in)
196049.8 mm (2.0 in)
196146.2 mm (1.8 in)
196258.9 mm (2.3 in)
196331.5 mm (1.2 in)
196473.4 mm (2.9 in)
196538.1 mm (1.5 in)
196645.2 mm (1.8 in)
196756.6 mm (2.2 in)
196825.4 mm (1.0 in)
196951.6 mm (2.0 in)
197050.5 mm (2.0 in)
197134.8 mm (1.4 in)
197274.4 mm (2.9 in)
199848.3 mm (1.9 in)
199962.7 mm (2.5 in)
200040.1 mm (1.6 in)
200150.8 mm (2.0 in)
200253.3 mm (2.1 in)
200336.8 mm (1.4 in)
200450.8 mm (2.0 in)
200568.6 mm (2.7 in)
200638.1 mm (1.5 in)
200750.0 mm (2.0 in)
200856.4 mm (2.2 in)
200951.1 mm (2.0 in)
201069.9 mm (2.8 in)
201122.6 mm (0.9 in)
201287.6 mm (3.4 in)
201319.1 mm (0.8 in)
201443.7 mm (1.7 in)
201556.1 mm (2.2 in)
201650.5 mm (2.0 in)
201736.3 mm (1.4 in)
201819.3 mm (0.8 in)
201938.4 mm (1.5 in)
202027.4 mm (1.1 in)
202122.1 mm (0.9 in)
202218.0 mm (0.7 in)
202313.5 mm (0.5 in)
202554.9 mm (2.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Oak Knoll W C by year The wettest five days of the year at Oak Knoll W C, 1943 to 2025. The record is 199.1 mm (7.8 in) in 1964, marked on the chart; the median year is 95.0 mm (3.7 in). 0501001502001960198020002020Record: 199.1 mm (7.8 in) in 1964
The wettest five days of the year at Oak Knoll W C, 1943 to 2025. The record is 199.1 mm (7.8 in) in 1964, marked on the chart; the median year is 95.0 mm (3.7 in).
Wettest five days (Rx5day) at Oak Knoll W C by year
YearWettest five days (Rx5day)
194312.2 mm (0.5 in)
194465.3 mm (2.6 in)
194581.5 mm (3.2 in)
194698.1 mm (3.9 in)
194746.2 mm (1.8 in)
1948181.0 mm (7.1 in)
194942.9 mm (1.7 in)
1950112.0 mm (4.4 in)
195196.0 mm (3.8 in)
195291.2 mm (3.6 in)
1953122.9 mm (4.8 in)
195489.2 mm (3.5 in)
1955144.1 mm (5.7 in)
195695.3 mm (3.8 in)
195796.5 mm (3.8 in)
1958100.6 mm (4.0 in)
195959.2 mm (2.3 in)
1960125.8 mm (5.0 in)
196174.8 mm (2.9 in)
1962196.2 mm (7.7 in)
1963107.2 mm (4.2 in)
1964199.1 mm (7.8 in)
196595.0 mm (3.7 in)
1966138.2 mm (5.4 in)
1967117.2 mm (4.6 in)
196873.1 mm (2.9 in)
1969110.3 mm (4.3 in)
1970118.3 mm (4.7 in)
197198.6 mm (3.9 in)
1972157.4 mm (6.2 in)
199862.8 mm (2.5 in)
1999113.5 mm (4.5 in)
2000103.7 mm (4.1 in)
200166.6 mm (2.6 in)
2002107.4 mm (4.2 in)
200373.7 mm (2.9 in)
2004105.7 mm (4.2 in)
2005131.2 mm (5.2 in)
2006122.4 mm (4.8 in)
200775.2 mm (3.0 in)
2008102.4 mm (4.0 in)
200951.1 mm (2.0 in)
201076.6 mm (3.0 in)
201144.3 mm (1.7 in)
201299.9 mm (3.9 in)
201332.3 mm (1.3 in)
201450.8 mm (2.0 in)
2015134.9 mm (5.3 in)
201663.7 mm (2.5 in)
201790.9 mm (3.6 in)
201840.7 mm (1.6 in)
201972.1 mm (2.8 in)
202056.1 mm (2.2 in)
202142.6 mm (1.7 in)
202228.8 mm (1.1 in)
20235.5 mm (0.22 in)
202560.7 mm (2.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Oak Knoll W C by year The longest dry spell of the year at Oak Knoll W C, 1943 to 2025. The record is 119 days in 2005, marked on the chart; the median year is 53 days. 0501001501960198020002020Record: 119 days in 2005
The longest dry spell of the year at Oak Knoll W C, 1943 to 2025. The record is 119 days in 2005, marked on the chart; the median year is 53 days.
Longest dry spell (CDD) at Oak Knoll W C by year
YearLongest dry spell (CDD)
194314 days
194459 days
194549 days
194651 days
194732 days
194833 days
194981 days
195053 days
1951102 days
195237 days
195353 days
195458 days
195582 days
195634 days
195773 days
195824 days
195986 days
196047 days
196140 days
196249 days
196355 days
196448 days
196540 days
196645 days
196783 days
196854 days
196968 days
197056 days
197161 days
197243 days
1998116 days
199994 days
200060 days
200159 days
2002106 days
200381 days
200428 days
2005119 days
200625 days
200735 days
200870 days
200966 days
201090 days
201164 days
201270 days
201344 days
201436 days
201546 days
201656 days
201742 days
201876 days
201970 days
202038 days
202140 days
202249 days
202349 days
20259 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

36 years, 1944 to 2021

A day with at least 48.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 89.7 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Oak Knoll W C: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years48.1 mm (1.9 in)
5 years62.9 mm (2.5 in)
10 years71.0 mm (2.8 in)
25 years79.6 mm (3.1 in)
50 years85.0 mm (3.3 in)Longer than the 36 years of record
100 years89.7 mm (3.5 in)Longer than the 36 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 36 years of values from 1944 to 2021.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 100.3 mm (3.9 in) in 1948; 73.4 mm (2.9 in) in 1964; 69.9 mm (2.8 in) in 2010.

Download the Data

  • Data for Oak Knoll W C standing records by year: CSV or JSON. Field meanings are on the data page.
  • 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).