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Corvallis Water Bureau Weather Records (USC00351877)

Record envelope, standing records and threshold days for Corvallis Water Bureau (USC00351877), Oregon, United States, with 91 years of record.

Key Facts for Corvallis Water Bureau

  • Corvallis Water Bureau (USC00351877) is a weather station in Oregon, United States at 44.51 latitude and -123.46 longitude, 180 m (592 ft) above sea level.
  • The station reports from 1936 to 2026, 91 years of record.
  • 1,464 records set at Corvallis Water Bureau still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Corvallis Water Bureau set a daily record low maximum temperature of 15.6 C (60.1 F) on 4 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Oregon, United States, 44.51 latitude, -123.46 longitude.
  • Elevation: 180 m (592 ft).
  • Period of record: 1936 to 2026, 91 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

9 days at or beyond a record
Daily record high and record low at Corvallis Water Bureau, with 2026 drawn through them The band shows the record high and record low for each calendar day at Corvallis Water Bureau. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Corvallis Water Bureau. The lines show the 2026 daily maximum and minimum. 9 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Corvallis Water Bureau, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.8 C (64.0 F)-15.6 C (3.9 F)11.7 C (53.1 F)n/a
Feb22.2 C (72.0 F)-16.7 C (1.9 F)15.6 C (60.1 F)n/a
Mar25.6 C (78.1 F)-9.4 C (15.1 F)23.3 C (73.9 F)n/a
Apr31.1 C (88.0 F)-4.4 C (24.1 F)28.3 C (82.9 F)n/a
May35.0 C (95.0 F)-2.8 C (27.0 F)31.7 C (89.1 F)n/a
Jun43.3 C (109.9 F)-0.6 C (30.9 F)36.7 C (98.1 F)n/a
Jul41.1 C (106.0 F)2.8 C (37.0 F)38.3 C (100.9 F)n/a
Aug41.7 C (107.1 F)1.7 C (35.1 F)36.1 C (97.0 F)n/a
Sep38.3 C (100.9 F)-2.8 C (27.0 F)31.7 C (89.1 F)n/a
Oct31.7 C (89.1 F)-9.4 C (15.1 F)27.8 C (82.0 F)n/a
Nov21.1 C (70.0 F)-11.7 C (10.9 F)n/an/a
Dec16.1 C (61.0 F)-16.7 C (1.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Corvallis Water Bureau by the year they were set 1,464 records at Corvallis Water Bureau still stand. 2017 holds the most, with 76. 0204060801963: 151964: 351965: 221966: 231967: 341968: 291969: 211970: 281971: 211972: 491973: 301974: 351975: 201976: 191977: 201978: 211979: 241980: 321981: 121982: 171983: 201984: 191985: 311986: 151987: 141988: 141989: 231990: 241991: 251992: 151993: 211994: 91995: 251996: 191997: 151998: 131999: 162000: 62001: 72002: 132003: 212004: 182005: 202006: 262007: 112008: 232009: 462010: 152011: 72012: 192013: 142014: 162015: 282016: 472017: 762018: 202019: 462020: 192021: 272022: 202023: 252024: 292025: 332026: 71963197019771984199119982005201220192026
1,464 records at Corvallis Water Bureau still stand. 2017 holds the most, with 76.
Standing records at Corvallis Water Bureau by the year they were set
Year setStanding records
196315
196435
196522
196623
196734
196829
196921
197028
197121
197249
197330
197435
197520
197619
197720
197821
197924
198032
198112
198217
198320
198419
198531
198615
198714
198814
198923
199024
199125
199215
199321
19949
199525
199619
199715
199813
199916
20006
20017
200213
200321
200418
200520
200626
200711
200823
200946
201015
20117
201219
201314
201416
201528
201647
201776
201820
201946
202019
202127
202220
202325
202429
202533
20267

All-Time Record Progression

4 new records
When Corvallis Water Bureau set new all-time records 4 all-time records were set at Corvallis Water Bureau between 4 August 1993 and 28 June 2021. Each dot is a new record. Record high minimum temperatureRecord daily precipitationRecord high maximum temperature4 August 1993: Record high minimum temperature 19.4 C (66.9 F)19 November 1996: Record daily precipitation 159.8 mm (6.3 in)28 June 2021: Record high maximum temperature 43.3 C (109.9 F)28 June 2021: Record high minimum temperature 21.7 C (71.1 F)199520002005201020152020
4 all-time records were set at Corvallis Water Bureau between 4 August 1993 and 28 June 2021. Each dot is a new record.
When Corvallis Water Bureau set new all-time records
DateKindDetail
1993-08-04Record high minimum temperatureRecord high minimum temperature 19.4 C (66.9 F)
1996-11-19Record daily precipitationRecord daily precipitation 159.8 mm (6.3 in)
2021-06-28Record high maximum temperatureRecord high maximum temperature 43.3 C (109.9 F)
2021-06-28Record high minimum temperatureRecord high minimum temperature 21.7 C (71.1 F)

Wettest Day of Each Month

Nov: 159.8 mm (6.3 in)
Record daily precipitation for each month at Corvallis Water Bureau The wettest day on record for each calendar month at Corvallis Water Bureau. The most was 159.8 mm (6.3 in) on 19 November 1996. 050100150200 Jan: 129.8 mm (5.1 in), 6 January 1950 Jan Feb: 132.8 mm (5.2 in), 6 February 1996 Feb Mar: 110.5 mm (4.4 in), 18 March 1938 Mar Apr: 94.5 mm (3.7 in), 8 April 2019 Apr May: 58.9 mm (2.3 in), 3 May 1948 May Jun: 67.3 mm (2.6 in), 7 June 1985 Jun Jul: 24.9 mm (1.0 in), 18 July 1996 Jul Aug: 50.8 mm (2.0 in), 27 August 1953 Aug Sep: 95.5 mm (3.8 in), 30 September 2013 Sep Oct: 114.6 mm (4.5 in), 14 October 2016 Oct Nov: 159.8 mm (6.3 in), 19 November 1996 Nov Dec: 140.0 mm (5.5 in), 28 December 1998 Dec
The wettest day on record for each calendar month at Corvallis Water Bureau. The most was 159.8 mm (6.3 in) on 19 November 1996.
Record daily precipitation for each month at Corvallis Water Bureau
MonthRecord daily precipitation (mm)Date
Jan129.8 mm (5.1 in)6 January 1950
Feb132.8 mm (5.2 in)6 February 1996
Mar110.5 mm (4.4 in)18 March 1938
Apr94.5 mm (3.7 in)8 April 2019
May58.9 mm (2.3 in)3 May 1948
Jun67.3 mm (2.6 in)7 June 1985
Jul24.9 mm (1.0 in)18 July 1996
Aug50.8 mm (2.0 in)27 August 1953
Sep95.5 mm (3.8 in)30 September 2013
Oct114.6 mm (4.5 in)14 October 2016
Nov159.8 mm (6.3 in)19 November 1996
Dec140.0 mm (5.5 in)28 December 1998

Period of Record Coverage

1963 to 2026
Days with data per year at Corvallis Water Bureau 64 years of record at Corvallis Water Bureau, 1963 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1963, 2018, 2019, 2020, 2026. 1963: 210 of 365 days1964: 362 of 366 days1965: 360 of 365 days1966: 364 of 365 days1967: 363 of 365 days1968: 364 of 366 days1969: 363 of 365 days1970: 361 of 365 days1971: 364 of 365 days1972: 366 of 366 days1973: 363 of 365 days1974: 357 of 365 days1975: 363 of 365 days1976: 365 of 366 days1977: 364 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 363 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 364 of 365 days1986: 364 of 365 days1987: 364 of 365 days1988: 366 of 366 days1989: 361 of 365 days1990: 360 of 365 days1991: 363 of 365 days1992: 362 of 366 days1993: 364 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 366 of 366 days1997: 364 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 333 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 365 of 365 days2006: 362 of 365 days2007: 363 of 365 days2008: 366 of 366 days2009: 364 of 365 days2010: 363 of 365 days2011: 364 of 365 days2012: 354 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 328 of 365 days2019: 301 of 365 days2020: 245 of 366 days2021: 360 of 365 days2022: 355 of 365 days2023: 365 of 365 days2024: 362 of 366 days2025: 338 of 365 days2026: 237 of 365 days197019801990200020102020
64 years of record at Corvallis Water Bureau, 1963 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1963, 2018, 2019, 2020, 2026.
Days with data per year at Corvallis Water Bureau
YearDays with dataShare of yearComplete
196321058%No
196436299%Yes
196536099%Yes
1966364100%Yes
196736399%Yes
196836499%Yes
196936399%Yes
197036199%Yes
1971364100%Yes
1972366100%Yes
197336399%Yes
197435798%Yes
197536399%Yes
1976365100%Yes
1977364100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
198236399%Yes
1983365100%Yes
1984365100%Yes
1985364100%Yes
1986364100%Yes
1987364100%Yes
1988366100%Yes
198936199%Yes
199036099%Yes
199136399%Yes
199236299%Yes
1993364100%Yes
1994365100%Yes
1995364100%Yes
1996366100%Yes
1997364100%Yes
1998365100%Yes
1999364100%Yes
2000365100%Yes
2001365100%Yes
200233391%Yes
2003365100%Yes
2004365100%Yes
2005365100%Yes
200636299%Yes
200736399%Yes
2008366100%Yes
2009364100%Yes
201036399%Yes
2011364100%Yes
201235497%Yes
2013364100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017364100%Yes
201832890%No
201930182%No
202024567%No
202136099%Yes
202235597%Yes
2023365100%Yes
202436299%Yes
202533893%Yes
202623765%No

Latest Records

20
Latest records at Corvallis Water Bureau
DateStationRecordValueBeat old record byOld record stoodSignificance
4 September 2026Corvallis Water Bureau, USdaily low max (Provisional)15.6 C (60.1 F)1.1 C (2.0 F)25 years15 of 100 (Routine)
28 June 2026Corvallis Water Bureau, USdaily low max (Tie)16.7 C (62.1 F)tie57 years5 of 100 (Routine)
16 June 2026Corvallis Water Bureau, USdaily high max (Tie)36.7 C (98.1 F)tie56 years5 of 100 (Routine)
15 June 2026Corvallis Water Bureau, USdaily high max33.3 C (91.9 F)2.7 C (4.9 F)63 years29 of 100 (Routine)
22 May 2026Corvallis Water Bureau, USdaily high max30.0 C (86.0 F)0.6 C (1.1 F)24 years14 of 100 (Routine)
4 May 2026Corvallis Water Bureau, USdaily high max31.7 C (89.1 F)3.4 C (6.1 F)33 years22 of 100 (Routine)
15 April 2026Corvallis Water Bureau, USdaily rain48.3 mm (1.9 in)20.9 mm (0.8 in)88 years56 of 100 (Notable)
10 April 2026Corvallis Water Bureau, USdaily high max26.1 C (79.0 F)1.7 C (3.1 F)36 years20 of 100 (Routine)
7 April 2026Corvallis Water Bureau, USdaily high max28.3 C (82.9 F)2.2 C (4.0 F)19 years16 of 100 (Routine)
6 April 2026Corvallis Water Bureau, USdaily high max26.7 C (80.1 F)2.3 C (4.1 F)19 years16 of 100 (Routine)
2 April 2026Corvallis Water Bureau, USdaily rain31.8 mm (1.3 in)3.9 mm (0.15 in)72 years34 of 100 (Routine)
17 March 2026Corvallis Water Bureau, USdaily high max (Tie)23.3 C (73.9 F)tie53 years5 of 100 (Routine)
17 February 2026Corvallis Water Bureau, USdaily snowfall6.4 cm (2.5 in)1.3 cm (0.5 in)36 years20 of 100 (Routine)
5 February 2026Corvallis Water Bureau, USdaily high max15.6 C (60.1 F)0.6 C (1.1 F)8 years9 of 100 (Routine)
23 December 2025Corvallis Water Bureau, USdaily high min (Tie)7.2 C (45.0 F)tie60 years6 of 100 (Routine)
19 December 2025Corvallis Water Bureau, USdaily rain117.6 mm (4.6 in)62.0 mm (2.4 in)4 years42 of 100 (Notable)
16 December 2025Corvallis Water Bureau, USdaily high min10.0 C (50.0 F)1.7 C (3.1 F)26 years17 of 100 (Routine)
16 December 2025Corvallis Water Bureau, USmonthly high max (Tie)16.1 C (61.0 F)tie18 years5 of 100 (Routine)
12 December 2025Corvallis Water Bureau, USdaily high max (Tie)14.4 C (57.9 F)tie15 years2 of 100 (Routine)
11 December 2025Corvallis Water Bureau, USdaily high min10.6 C (51.1 F)1.7 C (3.1 F)48 years24 of 100 (Routine)

Climate Trend

55 complete years, 1964 to 2023
Annual mean temperature at Corvallis Water Bureau as warming stripes, 1964 to 2023 One stripe for each of 55 complete years at Corvallis Water Bureau, 1964 to 2023. Blue stripes are years cooler than the station's own mean of 10.7 C (51.2 F); red stripes are warmer. The coolest year was 2009, at 9.3 C (48.7 F), and the warmest was 2021, at 12.3 C (54.2 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1964: 10.3 C, -0.4 C from the station mean1965: 11.0 C, +0.4 C from the station mean1966: 11.1 C, +0.5 C from the station mean1967: 11.6 C, +1.0 C from the station mean1968: 10.8 C, +0.1 C from the station mean1969: 10.6 C, -0.1 C from the station mean1970: 10.6 C, 0.0 C from the station mean1971: 9.6 C, -1.0 C from the station mean1972: 10.6 C, -0.1 C from the station mean1973: 10.4 C, -0.2 C from the station mean1974: 10.6 C, 0.0 C from the station mean1975: 10.4 C, -0.3 C from the station mean1976: 10.2 C, -0.4 C from the station mean1977: 10.6 C, -0.1 C from the station mean1978: 10.7 C, 0.0 C from the station mean1979: 10.8 C, +0.2 C from the station mean1980: 10.4 C, -0.3 C from the station mean1981: 10.8 C, +0.1 C from the station mean1982: 9.9 C, -0.7 C from the station mean1983: 10.3 C, -0.3 C from the station mean1984: 10.1 C, -0.6 C from the station mean1985: 9.3 C, -1.3 C from the station mean1986: 10.4 C, -0.3 C from the station mean1987: 10.7 C, +0.1 C from the station mean1988: 10.4 C, -0.3 C from the station mean1989: 10.1 C, -0.6 C from the station mean1990: 10.4 C, -0.3 C from the station mean1991: 10.4 C, -0.3 C from the station mean1992: 11.5 C, +0.9 C from the station mean1993: 10.0 C, -0.6 C from the station mean1994: 10.6 C, -0.1 C from the station mean1995: 11.4 C, +0.8 C from the station mean1996: 10.5 C, -0.1 C from the station mean1997: 10.6 C, -0.1 C from the station mean1998: 11.2 C, +0.5 C from the station mean1999: 10.7 C, 0.0 C from the station mean2000: 10.5 C, -0.2 C from the station mean2001: 10.6 C, -0.1 C from the station mean2003: 11.8 C, +1.2 C from the station mean2004: 11.8 C, +1.1 C from the station mean2005: 11.2 C, +0.6 C from the station mean2006: 11.3 C, +0.7 C from the station mean2007: 10.8 C, +0.2 C from the station mean2008: 10.0 C, -0.6 C from the station mean2009: 9.3 C, -1.4 C from the station mean2010: 10.8 C, +0.2 C from the station mean2011: 10.3 C, -0.4 C from the station mean2012: 10.6 C, -0.1 C from the station mean2013: 10.0 C, -0.6 C from the station mean2014: 11.0 C, +0.4 C from the station mean2015: 11.1 C, +0.5 C from the station mean2016: 10.1 C, -0.6 C from the station mean2021: 12.3 C, +1.7 C from the station mean2022: 11.3 C, +0.6 C from the station mean2023: 11.7 C, +1.1 C from the station mean196419701975198019851990199520002005201020152020
One stripe for each of 55 complete years at Corvallis Water Bureau, 1964 to 2023. Blue stripes are years cooler than the station's own mean of 10.7 C (51.2 F); red stripes are warmer. The coolest year was 2009, at 9.3 C (48.7 F), and the warmest was 2021, at 12.3 C (54.2 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Corvallis Water Bureau as warming stripes, 1964 to 2023
YearAnnual mean temperatureDifference from the station mean
196410.3 C-0.41 C
196511.0 C+0.38 C
196611.1 C+0.47 C
196711.6 C+0.95 C
196810.8 C+0.13 C
196910.6 C-0.07 C
197010.6 C-0.03 C
19719.6 C-1.03 C
197210.6 C-0.09 C
197310.4 C-0.24 C
197410.6 C-0.03 C
197510.4 C-0.26 C
197610.2 C-0.43 C
197710.6 C-0.09 C
197810.7 C-0.01 C
197910.8 C+0.15 C
198010.4 C-0.26 C
198110.8 C+0.11 C
19829.9 C-0.74 C
198310.3 C-0.34 C
198410.1 C-0.61 C
19859.3 C-1.32 C
198610.4 C-0.28 C
198710.7 C+0.07 C
198810.4 C-0.30 C
198910.1 C-0.58 C
199010.4 C-0.31 C
199110.4 C-0.28 C
199211.5 C+0.85 C
199310.0 C-0.62 C
199410.6 C-0.09 C
199511.4 C+0.78 C
199610.5 C-0.13 C
199710.6 C-0.07 C
199811.2 C+0.53 C
199910.7 C+0.01 C
200010.5 C-0.20 C
200110.6 C-0.06 C
200311.8 C+1.16 C
200411.8 C+1.10 C
200511.2 C+0.58 C
200611.3 C+0.66 C
200710.8 C+0.15 C
200810.0 C-0.64 C
20099.3 C-1.41 C
201010.8 C+0.18 C
201110.3 C-0.36 C
201210.6 C-0.06 C
201310.0 C-0.63 C
201411.0 C+0.35 C
201511.1 C+0.47 C
201610.1 C-0.59 C
202112.3 C+1.67 C
202211.3 C+0.63 C
202311.7 C+1.07 C

The fitted trend in annual mean temperature here over 1964 to 2023 is 0.09 C (-0.01 to 0.19) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.16 F (-0.01 to 0.33) per decade. The slope is a straight line fitted to 55 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Corvallis Water Bureau
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.09 C (-0.01 to 0.19) per decade0.16 F (-0.01 to 0.33) per decade1964 to 202355Not clearly different from zero
Mean daily maximum0.3 C (0.2 to 0.4) per decade0.5 F (0.3 to 0.7) per decade1964 to 202355Rise
Mean daily minimum-0.11 C (-0.26 to 0.04) per decade-0.2 F (-0.5 to 0.1) per decade1964 to 202355Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1936 to 2026
Yearly extremes at Corvallis Water Bureau: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)202136.7 C (98.1 F)64
Coldest night (TNn)-16.7 C (1.9 F)1972-7.8 C (18.0 F)63
Wettest day (Rx1day)159.8 mm (6.3 in)199678.7 mm (3.1 in)91
Wettest five days (Rx5day)412.5 mm (16.2 in)1937200.0 mm (7.9 in)91
Longest dry spell (CDD)93 days201845 days91

Hottest day (TXx)

Hottest day (TXx) at Corvallis Water Bureau by year The hottest day of the year at Corvallis Water Bureau, 1936 to 2026. The record is 43.3 C (109.9 F) in 2021, marked on the chart; the median year is 36.7 C (98.1 F). 3035404519401960198020002020Record: 43.3 C (109.9 F) in 2021
The hottest day of the year at Corvallis Water Bureau, 1936 to 2026. The record is 43.3 C (109.9 F) in 2021, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Corvallis Water Bureau by year
YearHottest day (TXx)
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
196335.0 C (95.0 F)
196435.6 C (96.1 F)
196537.8 C (100.0 F)
196635.6 C (96.1 F)
196737.8 C (100.0 F)
196836.1 C (97.0 F)
196936.7 C (98.1 F)
197036.1 C (97.0 F)
197136.7 C (98.1 F)
197241.7 C (107.1 F)
197335.6 C (96.1 F)
197435.6 C (96.1 F)
197534.4 C (93.9 F)
197632.8 C (91.0 F)
197737.8 C (100.0 F)
197838.3 C (100.9 F)
197936.7 C (98.1 F)
198035.6 C (96.1 F)
198139.4 C (102.9 F)
198235.6 C (96.1 F)
198333.9 C (93.0 F)
198435.0 C (95.0 F)
198535.0 C (95.0 F)
198633.3 C (91.9 F)
198735.0 C (95.0 F)
198835.6 C (96.1 F)
198932.8 C (91.0 F)
199035.6 C (96.1 F)
199134.4 C (93.9 F)
199237.8 C (100.0 F)
199335.0 C (95.0 F)
199435.0 C (95.0 F)
199536.7 C (98.1 F)
199636.7 C (98.1 F)
199733.3 C (91.9 F)
199837.8 C (100.0 F)
199932.8 C (91.0 F)
200033.9 C (93.0 F)
200133.3 C (91.9 F)
200233.3 C (91.9 F)
200337.2 C (99.0 F)
200438.3 C (100.9 F)
200535.6 C (96.1 F)
200639.4 C (102.9 F)
200737.8 C (100.0 F)
200837.8 C (100.0 F)
200940.6 C (105.1 F)
201037.2 C (99.0 F)
201135.6 C (96.1 F)
201237.8 C (100.0 F)
201335.0 C (95.0 F)
201436.1 C (97.0 F)
201541.1 C (106.0 F)
201640.6 C (105.1 F)
201740.6 C (105.1 F)
201837.8 C (100.0 F)
201937.8 C (100.0 F)
202037.2 C (99.0 F)
202143.3 C (109.9 F)
202238.9 C (102.0 F)
202341.1 C (106.0 F)
202440.0 C (104.0 F)
202540.6 C (105.1 F)
202638.3 C (100.9 F)

Coldest night (TNn)

Coldest night (TNn) at Corvallis Water Bureau by year The coldest night of the year at Corvallis Water Bureau, 1936 to 2026. The record is -16.7 C (1.9 F) in 1972, marked on the chart; the median year is -7.8 C (18.0 F). -20-15-10-5019401960198020002020Record: -16.7 C (1.9 F) in 1972
The coldest night of the year at Corvallis Water Bureau, 1936 to 2026. The record is -16.7 C (1.9 F) in 1972, marked on the chart; the median year is -7.8 C (18.0 F).
Coldest night (TNn) at Corvallis Water Bureau by year
YearColdest night (TNn)
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963-5.6 C (21.9 F)
1964-14.4 C (6.1 F)
1965-10.0 C (14.0 F)
1966-3.9 C (25.0 F)
1967-7.2 C (19.0 F)
1968-10.0 C (14.0 F)
1969-11.1 C (12.0 F)
1970-6.1 C (21.0 F)
1971-7.8 C (18.0 F)
1972-16.7 C (1.9 F)
1973-10.0 C (14.0 F)
1974-12.8 C (9.0 F)
1975-5.0 C (23.0 F)
1976-6.1 C (21.0 F)
1977-8.3 C (17.1 F)
1978-12.8 C (9.0 F)
1979-15.6 C (3.9 F)
1980-12.8 C (9.0 F)
1981-3.3 C (26.1 F)
1982-9.4 C (15.1 F)
1983-15.0 C (5.0 F)
1984-9.4 C (15.1 F)
1985-11.7 C (10.9 F)
1986-4.4 C (24.1 F)
1987-6.7 C (19.9 F)
1988-6.1 C (21.0 F)
1989-16.7 C (1.9 F)
1990-16.7 C (1.9 F)
1991-7.8 C (18.0 F)
1992-5.6 C (21.9 F)
1993-9.4 C (15.1 F)
1994-6.1 C (21.0 F)
1995-4.4 C (24.1 F)
1996-10.0 C (14.0 F)
1997-7.8 C (18.0 F)
1998-11.7 C (10.9 F)
1999-3.3 C (26.1 F)
2000-4.4 C (24.1 F)
2001-3.9 C (25.0 F)
2002-5.6 C (21.9 F)
2003-4.4 C (24.1 F)
2004-6.7 C (19.9 F)
2005-7.8 C (18.0 F)
2006-7.2 C (19.0 F)
2007-8.3 C (17.1 F)
2008-11.7 C (10.9 F)
2009-16.7 C (1.9 F)
2010-7.2 C (19.0 F)
2011-11.1 C (12.0 F)
2012-4.4 C (24.1 F)
2013-16.1 C (3.0 F)
2014-9.4 C (15.1 F)
2015-9.4 C (15.1 F)
2016-11.1 C (12.0 F)
2017-15.0 C (5.0 F)
2018-7.8 C (18.0 F)
2019-9.4 C (15.1 F)
2020-2.8 C (27.0 F)
2021-3.9 C (25.0 F)
2022-6.7 C (19.9 F)
2023-7.2 C (19.0 F)
2024-12.2 C (10.0 F)
2025-5.6 C (21.9 F)
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Corvallis Water Bureau by year The wettest day of the year at Corvallis Water Bureau, 1936 to 2026. The record is 159.8 mm (6.3 in) in 1996, marked on the chart; the median year is 78.7 mm (3.1 in). 05010015020019401960198020002020Record: 159.8 mm (6.3 in) in 1996
The wettest day of the year at Corvallis Water Bureau, 1936 to 2026. The record is 159.8 mm (6.3 in) in 1996, marked on the chart; the median year is 78.7 mm (3.1 in).
Wettest day (Rx1day) at Corvallis Water Bureau by year
YearWettest day (Rx1day)
193647.2 mm (1.9 in)
1937136.4 mm (5.4 in)
1938110.5 mm (4.4 in)
193971.9 mm (2.8 in)
194078.2 mm (3.1 in)
194190.9 mm (3.6 in)
194285.6 mm (3.4 in)
1943101.3 mm (4.0 in)
194458.2 mm (2.3 in)
194577.7 mm (3.1 in)
194678.2 mm (3.1 in)
194784.8 mm (3.3 in)
194895.3 mm (3.8 in)
1949113.3 mm (4.5 in)
1950129.8 mm (5.1 in)
195178.7 mm (3.1 in)
195250.8 mm (2.0 in)
195372.1 mm (2.8 in)
195478.7 mm (3.1 in)
195563.5 mm (2.5 in)
195663.5 mm (2.5 in)
195768.1 mm (2.7 in)
195881.3 mm (3.2 in)
195977.0 mm (3.0 in)
196081.5 mm (3.2 in)
1961108.0 mm (4.3 in)
196250.8 mm (2.0 in)
196364.3 mm (2.5 in)
1964110.2 mm (4.3 in)
196588.1 mm (3.5 in)
1966109.5 mm (4.3 in)
196760.5 mm (2.4 in)
196871.1 mm (2.8 in)
1969109.2 mm (4.3 in)
197071.4 mm (2.8 in)
197163.2 mm (2.5 in)
1972100.1 mm (3.9 in)
197387.6 mm (3.4 in)
1974112.3 mm (4.4 in)
1975100.1 mm (3.9 in)
197673.7 mm (2.9 in)
197769.9 mm (2.8 in)
197850.8 mm (2.0 in)
197963.5 mm (2.5 in)
1980109.2 mm (4.3 in)
1981102.9 mm (4.1 in)
198281.8 mm (3.2 in)
198380.0 mm (3.1 in)
1984119.9 mm (4.7 in)
198567.3 mm (2.6 in)
198662.0 mm (2.4 in)
1987109.7 mm (4.3 in)
198869.6 mm (2.7 in)
198972.9 mm (2.9 in)
199078.7 mm (3.1 in)
199152.6 mm (2.1 in)
199266.3 mm (2.6 in)
199366.0 mm (2.6 in)
199473.4 mm (2.9 in)
199571.4 mm (2.8 in)
1996159.8 mm (6.3 in)
199782.0 mm (3.2 in)
1998140.0 mm (5.5 in)
199982.6 mm (3.3 in)
200049.3 mm (1.9 in)
200182.0 mm (3.2 in)
200275.7 mm (3.0 in)
200367.1 mm (2.6 in)
200459.4 mm (2.3 in)
200594.5 mm (3.7 in)
200699.3 mm (3.9 in)
200799.6 mm (3.9 in)
200842.4 mm (1.7 in)
200963.8 mm (2.5 in)
201064.8 mm (2.6 in)
201163.5 mm (2.5 in)
2012105.7 mm (4.2 in)
201395.5 mm (3.8 in)
201475.7 mm (3.0 in)
201580.3 mm (3.2 in)
2016116.8 mm (4.6 in)
201777.2 mm (3.0 in)
2018114.3 mm (4.5 in)
201994.5 mm (3.7 in)
202058.4 mm (2.3 in)
202194.0 mm (3.7 in)
202277.0 mm (3.0 in)
202348.5 mm (1.9 in)
202478.7 mm (3.1 in)
2025117.6 mm (4.6 in)
202650.8 mm (2.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Corvallis Water Bureau by year The wettest five days of the year at Corvallis Water Bureau, 1936 to 2026. The record is 412.5 mm (16.2 in) in 1937, marked on the chart; the median year is 200.0 mm (7.9 in). 010020030040050019401960198020002020Record: 412.5 mm (16.2 in) in 1937
The wettest five days of the year at Corvallis Water Bureau, 1936 to 2026. The record is 412.5 mm (16.2 in) in 1937, marked on the chart; the median year is 200.0 mm (7.9 in).
Wettest five days (Rx5day) at Corvallis Water Bureau by year
YearWettest five days (Rx5day)
1936113.5 mm (4.5 in)
1937412.5 mm (16.2 in)
1938275.9 mm (10.9 in)
1939199.4 mm (7.9 in)
1940181.9 mm (7.2 in)
1941192.1 mm (7.6 in)
1942245.9 mm (9.7 in)
1943250.9 mm (9.9 in)
1944118.8 mm (4.7 in)
1945200.0 mm (7.9 in)
1946213.1 mm (8.4 in)
1947286.6 mm (11.3 in)
1948185.5 mm (7.3 in)
1949215.9 mm (8.5 in)
1950272.3 mm (10.7 in)
1951212.8 mm (8.4 in)
1952168.6 mm (6.6 in)
1953217.6 mm (8.6 in)
1954158.0 mm (6.2 in)
1955177.8 mm (7.0 in)
1956201.3 mm (7.9 in)
1957175.8 mm (6.9 in)
1958167.9 mm (6.6 in)
1959248.5 mm (9.8 in)
1960195.8 mm (7.7 in)
1961239.5 mm (9.4 in)
1962172.3 mm (6.8 in)
1963187.7 mm (7.4 in)
1964339.8 mm (13.4 in)
1965266.1 mm (10.5 in)
1966260.2 mm (10.2 in)
1967205.4 mm (8.1 in)
1968170.8 mm (6.7 in)
1969181.5 mm (7.1 in)
1970238.8 mm (9.4 in)
1971220.0 mm (8.7 in)
1972223.7 mm (8.8 in)
1973276.6 mm (10.9 in)
1974352.7 mm (13.9 in)
1975206.8 mm (8.1 in)
1976166.5 mm (6.6 in)
1977241.3 mm (9.5 in)
1978130.0 mm (5.1 in)
1979139.7 mm (5.5 in)
1980242.8 mm (9.6 in)
1981207.3 mm (8.2 in)
1982203.4 mm (8.0 in)
1983176.6 mm (7.0 in)
1984198.0 mm (7.8 in)
1985110.7 mm (4.4 in)
1986166.9 mm (6.6 in)
1987207.5 mm (8.2 in)
1988193.4 mm (7.6 in)
1989122.9 mm (4.8 in)
1990209.5 mm (8.2 in)
1991142.6 mm (5.6 in)
1992180.3 mm (7.1 in)
1993185.0 mm (7.3 in)
1994128.8 mm (5.1 in)
1995241.4 mm (9.5 in)
1996333.0 mm (13.1 in)
1997247.5 mm (9.7 in)
1998242.8 mm (9.6 in)
1999237.3 mm (9.3 in)
2000113.1 mm (4.5 in)
2001232.0 mm (9.1 in)
2002176.1 mm (6.9 in)
2003132.6 mm (5.2 in)
2004144.2 mm (5.7 in)
2005236.2 mm (9.3 in)
2006272.5 mm (10.7 in)
2007240.1 mm (9.5 in)
2008132.3 mm (5.2 in)
2009133.9 mm (5.3 in)
2010156.6 mm (6.2 in)
2011165.9 mm (6.5 in)
2012287.8 mm (11.3 in)
2013208.3 mm (8.2 in)
2014177.8 mm (7.0 in)
2015231.7 mm (9.1 in)
2016285.8 mm (11.3 in)
2017226.0 mm (8.9 in)
2018165.4 mm (6.5 in)
2019276.3 mm (10.9 in)
2020159.7 mm (6.3 in)
2021214.6 mm (8.4 in)
2022173.0 mm (6.8 in)
2023143.7 mm (5.7 in)
2024165.5 mm (6.5 in)
2025187.2 mm (7.4 in)
202690.9 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Corvallis Water Bureau by year The longest dry spell of the year at Corvallis Water Bureau, 1936 to 2026. The record is 93 days in 2018, marked on the chart; the median year is 45 days. 02040608010019401960198020002020Record: 93 days in 2018
The longest dry spell of the year at Corvallis Water Bureau, 1936 to 2026. The record is 93 days in 2018, marked on the chart; the median year is 45 days.
Longest dry spell (CDD) at Corvallis Water Bureau by year
YearLongest dry spell (CDD)
193652 days
193752 days
193854 days
193952 days
194053 days
194138 days
194242 days
194327 days
194431 days
194537 days
194658 days
194726 days
194820 days
194931 days
195033 days
195153 days
195256 days
195333 days
195439 days
195543 days
195628 days
195750 days
195836 days
195920 days
196045 days
196148 days
196260 days
196331 days
196419 days
196543 days
196657 days
196778 days
196824 days
196980 days
197088 days
197166 days
197263 days
197358 days
197454 days
197533 days
197625 days
197780 days
197827 days
197934 days
198059 days
198172 days
198229 days
198332 days
198436 days
198551 days
198666 days
198767 days
198834 days
198934 days
199041 days
199148 days
199223 days
199349 days
199441 days
199532 days
199642 days
199739 days
199884 days
199936 days
200058 days
200131 days
200232 days
200343 days
200452 days
200549 days
200663 days
200728 days
200868 days
200946 days
201058 days
201143 days
201284 days
201360 days
201436 days
201573 days
201652 days
201756 days
201893 days
201936 days
202092 days
202173 days
202248 days
202340 days
202433 days
202554 days
202636 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.

Frost Dates and Growing Season

55 years with a frost

Across 55 years with a frost, the median last spring frost at Corvallis Water Bureau falls on 27 April and the median first autumn frost on 31 October, which leaves a median of 185 days between them.

Fitted over all years, the growing season changes by 0.0 days per decade at this station.

Frost dates and growing season at Corvallis Water Bureau
MeasureMedian, all yearsEarliest periodRecent period (1989 to 2023)Recent against earliestFitted trend
Last spring frost27 Apriln/a23 Apriln/a-1.7 days per decade
First autumn frost31 Octobern/a30 Octobern/a-1.6 days per decade
Growing days185 daysn/a188 daysn/a0.0 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

84 years, 1937 to 2025

A day with at least 81.0 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 154.4 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Corvallis Water Bureau: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years81.0 mm (3.2 in)
5 years101.7 mm (4.0 in)
10 years114.9 mm (4.5 in)
25 years131.2 mm (5.2 in)
50 years143.0 mm (5.6 in)
100 years154.4 mm (6.1 in)Longer than the 84 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, 84 years of values from 1937 to 2025.

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: 159.8 mm (6.3 in) in 1996; 140.0 mm (5.5 in) in 1998; 136.4 mm (5.4 in) in 1937.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2005 to 2023 against 1961 to 1990

Over 2005 to 2023, Corvallis Water Bureau had a mean temperature of 10.8 C (51.4 F) and 1,725.8 mm (67.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Idleyld Park 4 NE (United States, 132 km away), Shelton (United States, 301 km away) and Elma (United States, 278 km away).

Climate twins of Corvallis Water Bureau: stations whose 1961 to 1990 climate is closest to its 2005 to 2023 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Idleyld Park 4 NEUnited States132 km (82 mi)11.0 C (51.7 F)1,619.9 mm (63.8 in)0.77
SheltonUnited States301 km (187 mi)10.8 C (51.4 F)1,651.5 mm (65.0 in)0.79
ElmaUnited States278 km (173 mi)10.8 C (51.4 F)1,704.8 mm (67.1 in)0.99

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Corvallis Water Bureau standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Corvallis Water Bureau 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).