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Walla Walla 13 ESE Weather Records (USC00358985)

Record envelope, standing records and threshold days for Walla Walla 13 ESE (USC00358985), Oregon, United States, with 43 years of record.

Key Facts for Walla Walla 13 ESE

  • Walla Walla 13 ESE (USC00358985) is a weather station in Oregon, United States at 45.99 latitude and -118.05 longitude, 732 m (2,400 ft) above sea level.
  • The station reports from 1948 to 1990, 43 years of record.
  • 1,464 records set at Walla Walla 13 ESE still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Walla Walla 13 ESE set a daily record high maximum temperature of 11.1 C (52.0 F) on 28 November 1990.

About the Station

  • Location: Oregon, United States, 45.99 latitude, -118.05 longitude.
  • Elevation: 732 m (2,400 ft).
  • Period of record: 1948 to 1990, 43 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Walla Walla 13 ESE, with 2026 drawn through them The band shows the record high and record low for each calendar day at Walla Walla 13 ESE. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Walla Walla 13 ESE. 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 Walla Walla 13 ESE, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-27.8 C (-18.0 F)n/an/a
Feb20.6 C (69.1 F)-26.7 C (-16.1 F)n/an/a
Mar23.9 C (75.0 F)-18.3 C (-0.9 F)n/an/a
Apr30.6 C (87.1 F)-6.7 C (19.9 F)n/an/a
May34.4 C (93.9 F)-6.7 C (19.9 F)n/an/a
Jun36.7 C (98.1 F)-1.1 C (30.0 F)n/an/a
Jul38.9 C (102.0 F)1.1 C (34.0 F)n/an/a
Aug41.7 C (107.1 F)1.1 C (34.0 F)n/an/a
Sep36.1 C (97.0 F)-3.3 C (26.1 F)n/an/a
Oct27.8 C (82.0 F)-11.7 C (10.9 F)n/an/a
Nov20.0 C (68.0 F)-22.2 C (-8.0 F)n/an/a
Dec20.0 C (68.0 F)-27.8 C (-18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Walla Walla 13 ESE by the year they were set 1,464 records at Walla Walla 13 ESE still stand. 1950 holds the most, with 76. 0204060801948: 241949: 741950: 761951: 201952: 321953: 471954: 481955: 621956: 501957: 351958: 401959: 311960: 401961: 361962: 441963: 241964: 301965: 341966: 371967: 471968: 471969: 261970: 341971: 351972: 501973: 191974: 331975: 251976: 101977: 391978: 111979: 161980: 261981: 291982: 141983: 331984: 221985: 541986: 81987: 291988: 281989: 241990: 21194819531958196319681973197819831988
1,464 records at Walla Walla 13 ESE still stand. 1950 holds the most, with 76.
Standing records at Walla Walla 13 ESE by the year they were set
Year setStanding records
194824
194974
195076
195120
195232
195347
195448
195562
195650
195735
195840
195931
196040
196136
196244
196324
196430
196534
196637
196747
196847
196926
197034
197135
197250
197319
197433
197525
197610
197739
197811
197916
198026
198129
198214
198333
198422
198554
19868
198729
198828
198924
199021

Wettest Day of Each Month

Nov: 93.5 mm (3.7 in)
Record daily precipitation for each month at Walla Walla 13 ESE The wettest day on record for each calendar month at Walla Walla 13 ESE. The most was 93.5 mm (3.7 in) on 24 November 1964. 0255075100 Jan: 63.5 mm (2.5 in), 2 January 1966 Jan Feb: 63.5 mm (2.5 in), 23 February 1986 Feb Mar: 57.9 mm (2.3 in), 21 March 1966 Mar Apr: 53.8 mm (2.1 in), 20 April 1958 Apr May: 38.4 mm (1.5 in), 15 May 1959 May Jun: 51.6 mm (2.0 in), 5 June 1974 Jun Jul: 24.9 mm (1.0 in), 10 July 1971 Jul Aug: 57.9 mm (2.3 in), 30 August 1977 Aug Sep: 43.9 mm (1.7 in), 2 September 1971 Sep Oct: 47.8 mm (1.9 in), 20 October 1951 Oct Nov: 93.5 mm (3.7 in), 24 November 1964 Nov Dec: 58.9 mm (2.3 in), 11 December 1956 Dec
The wettest day on record for each calendar month at Walla Walla 13 ESE. The most was 93.5 mm (3.7 in) on 24 November 1964.
Record daily precipitation for each month at Walla Walla 13 ESE
MonthRecord daily precipitation (mm)Date
Jan63.5 mm (2.5 in)2 January 1966
Feb63.5 mm (2.5 in)23 February 1986
Mar57.9 mm (2.3 in)21 March 1966
Apr53.8 mm (2.1 in)20 April 1958
May38.4 mm (1.5 in)15 May 1959
Jun51.6 mm (2.0 in)5 June 1974
Jul24.9 mm (1.0 in)10 July 1971
Aug57.9 mm (2.3 in)30 August 1977
Sep43.9 mm (1.7 in)2 September 1971
Oct47.8 mm (1.9 in)20 October 1951
Nov93.5 mm (3.7 in)24 November 1964
Dec58.9 mm (2.3 in)11 December 1956

Period of Record Coverage

1948 to 1990
Days with data per year at Walla Walla 13 ESE 43 years of record at Walla Walla 13 ESE, 1948 to 1990. 11 years have data for under 90 percent of days and are left out of rankings: 1948, 1975, 1976, 1977, 1978, 1979, 1981, 1983 and others. 1948: 149 of 366 days1949: 360 of 365 days1950: 333 of 365 days1951: 365 of 365 days1952: 357 of 366 days1953: 364 of 365 days1954: 359 of 365 days1955: 356 of 365 days1956: 356 of 366 days1957: 360 of 365 days1958: 346 of 365 days1959: 356 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 362 of 365 days1964: 365 of 366 days1965: 364 of 365 days1966: 365 of 365 days1967: 359 of 365 days1968: 362 of 366 days1969: 351 of 365 days1970: 355 of 365 days1971: 358 of 365 days1972: 353 of 366 days1973: 348 of 365 days1974: 351 of 365 days1975: 311 of 365 days1976: 137 of 366 days1977: 297 of 365 days1978: 162 of 365 days1979: 244 of 365 days1980: 350 of 366 days1981: 250 of 365 days1982: 356 of 365 days1983: 297 of 365 days1984: 326 of 366 days1985: 357 of 365 days1986: 181 of 365 days1987: 358 of 365 days1988: 342 of 366 days1989: 342 of 365 days1990: 315 of 365 days19501960197019801990
43 years of record at Walla Walla 13 ESE, 1948 to 1990. 11 years have data for under 90 percent of days and are left out of rankings: 1948, 1975, 1976, 1977, 1978, 1979, 1981, 1983 and others.
Days with data per year at Walla Walla 13 ESE
YearDays with dataShare of yearComplete
194814941%No
194936099%Yes
195033391%Yes
1951365100%Yes
195235798%Yes
1953364100%Yes
195435998%Yes
195535698%Yes
195635697%Yes
195736099%Yes
195834695%Yes
195935698%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
196336299%Yes
1964365100%Yes
1965364100%Yes
1966365100%Yes
196735998%Yes
196836299%Yes
196935196%Yes
197035597%Yes
197135898%Yes
197235396%Yes
197334895%Yes
197435196%Yes
197531185%No
197613737%No
197729781%No
197816244%No
197924467%No
198035096%Yes
198125068%No
198235698%Yes
198329781%No
198432689%No
198535798%Yes
198618150%No
198735898%Yes
198834293%Yes
198934294%Yes
199031586%No

Latest Records

20
Latest records at Walla Walla 13 ESE
DateStationRecordValueBeat old record byOld record stoodSignificance
28 November 1990Walla Walla 13 ESE, USdaily high max11.1 C (52.0 F)2.2 C (4.0 F)36 years19 of 100 (Routine)
25 November 1990Walla Walla 13 ESE, USdaily rain43.9 mm (1.7 in)12.7 mm (0.5 in)20 years22 of 100 (Routine)
24 November 1990Walla Walla 13 ESE, USdaily high max (Tie)14.4 C (57.9 F)tie15 years2 of 100 (Routine)
13 November 1990Walla Walla 13 ESE, USdaily high min (Tie)5.0 C (41.0 F)tie5 years1 of 100 (Routine)
8 November 1990Walla Walla 13 ESE, USdaily high min5.6 C (42.1 F)0.6 C (1.1 F)13 years9 of 100 (Routine)
4 November 1990Walla Walla 13 ESE, USdaily rain29.5 mm (1.2 in)7.4 mm (0.29 in)19 years16 of 100 (Routine)
21 October 1990Walla Walla 13 ESE, USdaily rain42.4 mm (1.7 in)9.4 mm (0.37 in)15 years18 of 100 (Routine)
11 October 1990Walla Walla 13 ESE, USdaily low min (Tie)-2.2 C (28.0 F)tie4 years1 of 100 (Routine)
7 October 1990Walla Walla 13 ESE, USdaily low min-3.3 C (26.1 F)1.6 C (2.9 F)16 years13 of 100 (Routine)
23 September 1990Walla Walla 13 ESE, USdaily high max (Tie)29.4 C (84.9 F)tie37 years3 of 100 (Routine)
16 September 1990Walla Walla 13 ESE, USdaily high min (Tie)10.0 C (50.0 F)tie1 year1 of 100 (Routine)
10 September 1990Walla Walla 13 ESE, USdaily high max33.9 C (93.0 F)0.6 C (1.1 F)41 years17 of 100 (Routine)
17 August 1990Walla Walla 13 ESE, USdaily rain4.1 mm (0.16 in)0.3 mm (0.01 in)21 years10 of 100 (Routine)
12 August 1990Walla Walla 13 ESE, USdaily high max37.2 C (99.0 F)1.6 C (2.9 F)12 years10 of 100 (Routine)
9 August 1990Walla Walla 13 ESE, USdaily high max36.1 C (97.0 F)0.5 C (0.9 F)5 years6 of 100 (Routine)
5 August 1990Walla Walla 13 ESE, USdaily high max38.9 C (102.0 F)3.9 C (7.0 F)28 years20 of 100 (Routine)
25 July 1990Walla Walla 13 ESE, USdaily rain9.1 mm (0.36 in)3.0 mm (0.12 in)3 years9 of 100 (Routine)
13 July 1990Walla Walla 13 ESE, USdaily high min13.3 C (55.9 F)0.5 C (0.9 F)36 years16 of 100 (Routine)
12 July 1990Walla Walla 13 ESE, USdaily high max37.8 C (100.0 F)1.1 C (2.0 F)23 years12 of 100 (Routine)
11 July 1990Walla Walla 13 ESE, USdaily high max36.7 C (98.1 F)1.7 C (3.1 F)40 years19 of 100 (Routine)

Climate Trend

28 complete years, 1949 to 1989
Annual mean temperature at Walla Walla 13 ESE as warming stripes, 1949 to 1989 One stripe for each of 28 complete years at Walla Walla 13 ESE, 1949 to 1989. Blue stripes are years cooler than the station's own mean of 8.2 C (46.7 F); red stripes are warmer. The coolest year was 1985, at 6.6 C (43.9 F), and the warmest was 1987, at 9.2 C (48.6 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1949: 6.9 C, -1.3 C from the station mean1951: 8.0 C, -0.2 C from the station mean1952: 8.2 C, 0.0 C from the station mean1953: 8.8 C, +0.6 C from the station mean1954: 7.9 C, -0.3 C from the station mean1955: 7.0 C, -1.1 C from the station mean1956: 8.1 C, -0.1 C from the station mean1957: 7.6 C, -0.6 C from the station mean1959: 8.0 C, -0.2 C from the station mean1960: 8.0 C, -0.2 C from the station mean1961: 8.8 C, +0.6 C from the station mean1962: 8.2 C, 0.0 C from the station mean1963: 8.4 C, +0.2 C from the station mean1964: 7.6 C, -0.6 C from the station mean1965: 8.6 C, +0.4 C from the station mean1966: 8.7 C, +0.5 C from the station mean1967: 9.2 C, +1.0 C from the station mean1968: 8.5 C, +0.3 C from the station mean1969: 8.1 C, -0.1 C from the station mean1970: 8.3 C, +0.2 C from the station mean1971: 8.1 C, -0.1 C from the station mean1972: 8.2 C, 0.0 C from the station mean1973: 8.6 C, +0.4 C from the station mean1982: 8.1 C, 0.0 C from the station mean1985: 6.6 C, -1.6 C from the station mean1987: 9.2 C, +1.0 C from the station mean1988: 9.1 C, +0.9 C from the station mean1989: 8.4 C, +0.2 C from the station mean19491955196019651970197519801985
One stripe for each of 28 complete years at Walla Walla 13 ESE, 1949 to 1989. Blue stripes are years cooler than the station's own mean of 8.2 C (46.7 F); red stripes are warmer. The coolest year was 1985, at 6.6 C (43.9 F), and the warmest was 1987, at 9.2 C (48.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Walla Walla 13 ESE as warming stripes, 1949 to 1989
YearAnnual mean temperatureDifference from the station mean
19496.9 C-1.30 C
19518.0 C-0.21 C
19528.2 C+0.04 C
19538.8 C+0.58 C
19547.9 C-0.32 C
19557.0 C-1.13 C
19568.1 C-0.12 C
19577.6 C-0.60 C
19598.0 C-0.22 C
19608.0 C-0.18 C
19618.8 C+0.59 C
19628.2 C+0.05 C
19638.4 C+0.22 C
19647.6 C-0.56 C
19658.6 C+0.45 C
19668.7 C+0.53 C
19679.2 C+1.01 C
19688.5 C+0.35 C
19698.1 C-0.12 C
19708.3 C+0.17 C
19718.1 C-0.07 C
19728.2 C-0.01 C
19738.6 C+0.42 C
19828.1 C-0.03 C
19856.6 C-1.57 C
19879.2 C+1.03 C
19889.1 C+0.89 C
19898.4 C+0.22 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1948 to 1990
Yearly extremes at Walla Walla 13 ESE: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)196135.6 C (96.1 F)43
Coldest night (TNn)-27.8 C (-18.0 F)1950-18.9 C (-2.0 F)43
Wettest day (Rx1day)93.5 mm (3.7 in)196445.7 mm (1.8 in)43
Wettest five days (Rx5day)148.9 mm (5.9 in)195398.3 mm (3.9 in)43
Longest dry spell (CDD)117 days197433 days43

Hottest day (TXx)

Hottest day (TXx) at Walla Walla 13 ESE by year The hottest day of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 41.7 C (107.1 F) in 1961, marked on the chart; the median year is 35.6 C (96.1 F). 20253035404519501960197019801990Record: 41.7 C (107.1 F) in 1961
The hottest day of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 41.7 C (107.1 F) in 1961, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Walla Walla 13 ESE by year
YearHottest day (TXx)
194834.4 C (93.9 F)
194937.2 C (99.0 F)
195036.1 C (97.0 F)
195135.0 C (95.0 F)
195235.6 C (96.1 F)
195335.6 C (96.1 F)
195434.4 C (93.9 F)
195536.7 C (98.1 F)
195638.3 C (100.9 F)
195732.8 C (91.0 F)
195836.7 C (98.1 F)
195937.2 C (99.0 F)
196038.9 C (102.0 F)
196141.7 C (107.1 F)
196235.6 C (96.1 F)
196335.0 C (95.0 F)
196435.0 C (95.0 F)
196535.0 C (95.0 F)
196633.9 C (93.0 F)
196736.7 C (98.1 F)
196836.1 C (97.0 F)
196934.4 C (93.9 F)
197037.8 C (100.0 F)
197136.7 C (98.1 F)
197237.8 C (100.0 F)
197335.0 C (95.0 F)
197433.3 C (91.9 F)
197531.7 C (89.1 F)
197635.6 C (96.1 F)
197736.7 C (98.1 F)
197824.4 C (75.9 F)
197937.8 C (100.0 F)
198035.0 C (95.0 F)
198135.6 C (96.1 F)
198235.6 C (96.1 F)
198334.4 C (93.9 F)
198437.2 C (99.0 F)
198537.8 C (100.0 F)
198622.2 C (72.0 F)
198735.0 C (95.0 F)
198836.1 C (97.0 F)
198935.0 C (95.0 F)
199038.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Walla Walla 13 ESE by year The coldest night of the year at Walla Walla 13 ESE, 1948 to 1990. The record is -27.8 C (-18.0 F) in 1950, marked on the chart; the median year is -18.9 C (-2.0 F). -30-25-20-15-10-519501960197019801990Record: -27.8 C (-18.0 F) in 1950
The coldest night of the year at Walla Walla 13 ESE, 1948 to 1990. The record is -27.8 C (-18.0 F) in 1950, marked on the chart; the median year is -18.9 C (-2.0 F).
Coldest night (TNn) at Walla Walla 13 ESE by year
YearColdest night (TNn)
1948-17.8 C (0.0 F)
1949-23.3 C (-9.9 F)
1950-27.8 C (-18.0 F)
1951-18.9 C (-2.0 F)
1952-18.9 C (-2.0 F)
1953-9.4 C (15.1 F)
1954-19.4 C (-2.9 F)
1955-22.2 C (-8.0 F)
1956-20.6 C (-5.1 F)
1957-26.1 C (-15.0 F)
1958-9.4 C (15.1 F)
1959-20.0 C (-4.0 F)
1960-16.7 C (1.9 F)
1961-18.3 C (-0.9 F)
1962-22.8 C (-9.0 F)
1963-25.0 C (-13.0 F)
1964-24.4 C (-11.9 F)
1965-12.2 C (10.0 F)
1966-13.9 C (7.0 F)
1967-13.9 C (7.0 F)
1968-27.8 C (-18.0 F)
1969-20.6 C (-5.1 F)
1970-12.2 C (10.0 F)
1971-13.3 C (8.1 F)
1972-22.2 C (-8.0 F)
1973-20.0 C (-4.0 F)
1974-22.2 C (-8.0 F)
1975-12.2 C (10.0 F)
1976-8.9 C (16.0 F)
1977-17.2 C (1.0 F)
1978-18.9 C (-2.0 F)
1979-11.1 C (12.0 F)
1980-21.1 C (-6.0 F)
1981-11.1 C (12.0 F)
1982-19.4 C (-2.9 F)
1983-9.4 C (15.1 F)
1984-17.8 C (0.0 F)
1985-22.2 C (-8.0 F)
1986-11.1 C (12.0 F)
1987-16.7 C (1.9 F)
1988-15.0 C (5.0 F)
1989-22.8 C (-9.0 F)
1990-15.0 C (5.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Walla Walla 13 ESE by year The wettest day of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 93.5 mm (3.7 in) in 1964, marked on the chart; the median year is 45.7 mm (1.8 in). 2040608010019501960197019801990Record: 93.5 mm (3.7 in) in 1964
The wettest day of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 93.5 mm (3.7 in) in 1964, marked on the chart; the median year is 45.7 mm (1.8 in).
Wettest day (Rx1day) at Walla Walla 13 ESE by year
YearWettest day (Rx1day)
194845.7 mm (1.8 in)
194942.4 mm (1.7 in)
195046.0 mm (1.8 in)
195147.8 mm (1.9 in)
195227.9 mm (1.1 in)
195358.7 mm (2.3 in)
195440.1 mm (1.6 in)
195537.1 mm (1.5 in)
195658.9 mm (2.3 in)
195742.4 mm (1.7 in)
195866.0 mm (2.6 in)
195941.4 mm (1.6 in)
196040.1 mm (1.6 in)
196148.3 mm (1.9 in)
196250.8 mm (2.0 in)
196367.1 mm (2.6 in)
196493.5 mm (3.7 in)
196548.3 mm (1.9 in)
196663.5 mm (2.5 in)
196739.4 mm (1.6 in)
196855.9 mm (2.2 in)
196950.8 mm (2.0 in)
197042.9 mm (1.7 in)
197151.6 mm (2.0 in)
197244.5 mm (1.8 in)
197346.5 mm (1.8 in)
197451.6 mm (2.0 in)
197550.8 mm (2.0 in)
197640.6 mm (1.6 in)
197757.9 mm (2.3 in)
197830.0 mm (1.2 in)
197935.6 mm (1.4 in)
198036.8 mm (1.4 in)
198132.8 mm (1.3 in)
198251.3 mm (2.0 in)
198343.4 mm (1.7 in)
198441.1 mm (1.6 in)
198528.2 mm (1.1 in)
198663.5 mm (2.5 in)
198740.4 mm (1.6 in)
198833.5 mm (1.3 in)
198955.9 mm (2.2 in)
199043.9 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Walla Walla 13 ESE by year The wettest five days of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 148.9 mm (5.9 in) in 1953, marked on the chart; the median year is 98.3 mm (3.9 in). 05010015019501960197019801990Record: 148.9 mm (5.9 in) in 1953
The wettest five days of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 148.9 mm (5.9 in) in 1953, marked on the chart; the median year is 98.3 mm (3.9 in).
Wettest five days (Rx5day) at Walla Walla 13 ESE by year
YearWettest five days (Rx5day)
194883.1 mm (3.3 in)
194994.0 mm (3.7 in)
1950120.9 mm (4.8 in)
1951110.0 mm (4.3 in)
195259.0 mm (2.3 in)
1953148.9 mm (5.9 in)
195470.6 mm (2.8 in)
195576.4 mm (3.0 in)
1956106.6 mm (4.2 in)
195790.2 mm (3.6 in)
1958102.4 mm (4.0 in)
195978.7 mm (3.1 in)
196069.6 mm (2.7 in)
196182.4 mm (3.2 in)
196286.9 mm (3.4 in)
1963103.9 mm (4.1 in)
1964144.4 mm (5.7 in)
1965130.8 mm (5.1 in)
1966145.1 mm (5.7 in)
196785.7 mm (3.4 in)
1968121.5 mm (4.8 in)
1969124.0 mm (4.9 in)
1970102.3 mm (4.0 in)
197184.3 mm (3.3 in)
1972116.7 mm (4.6 in)
1973109.7 mm (4.3 in)
197498.3 mm (3.9 in)
197595.0 mm (3.7 in)
197641.7 mm (1.6 in)
1977113.5 mm (4.5 in)
197847.5 mm (1.9 in)
197965.8 mm (2.6 in)
198076.5 mm (3.0 in)
1981109.4 mm (4.3 in)
1982133.6 mm (5.3 in)
1983103.9 mm (4.1 in)
198472.0 mm (2.8 in)
198551.4 mm (2.0 in)
1986101.6 mm (4.0 in)
198774.0 mm (2.9 in)
198892.0 mm (3.6 in)
1989113.5 mm (4.5 in)
1990115.6 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Walla Walla 13 ESE by year The longest dry spell of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 117 days in 1974, marked on the chart; the median year is 33 days. 05010015019501960197019801990Record: 117 days in 1974
The longest dry spell of the year at Walla Walla 13 ESE, 1948 to 1990. The record is 117 days in 1974, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Walla Walla 13 ESE by year
YearLongest dry spell (CDD)
194824 days
194923 days
195024 days
195182 days
195263 days
195335 days
195431 days
195548 days
195623 days
195742 days
195823 days
195918 days
196039 days
196140 days
196250 days
196324 days
196422 days
196531 days
196644 days
196755 days
196823 days
196982 days
197033 days
197123 days
197230 days
197347 days
1974117 days
197535 days
197624 days
197736 days
19788 days
197942 days
198034 days
198131 days
198217 days
198322 days
198426 days
198553 days
198626 days
198735 days
198866 days
198924 days
199036 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Walla Walla 13 ESE falls on 21 May and the median first autumn frost on 24 September, which leaves a median of 123 days between them.

Fitted over all years, the growing season changes by +1.8 days per decade at this station.

Frost dates and growing season at Walla Walla 13 ESE
MeasureMedian, all yearsEarliest periodRecent period (1949 to 1989)Recent against earliestFitted trend
Last spring frost21 Mayn/a21 Mayn/a-0.8 days per decade
First autumn frost24 Septembern/a24 Septembern/a+0.9 days per decade
Growing days123 daysn/a123 daysn/a+1.8 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

33 years, 1949 to 1989

A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 88.2 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Walla Walla 13 ESE: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years46.0 mm (1.8 in)
5 years57.0 mm (2.2 in)
10 years64.3 mm (2.5 in)
25 years73.9 mm (2.9 in)
50 years81.0 mm (3.2 in)Longer than the 33 years of record
100 years88.2 mm (3.5 in)Longer than the 33 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, 33 years of values from 1949 to 1989.

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: 93.5 mm (3.7 in) in 1964; 67.1 mm (2.6 in) in 1963; 66.0 mm (2.6 in) in 1958.

Download the Data

  • Data for Walla Walla 13 ESE standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Walla Walla 13 ESE 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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