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Built 2026-10-16 (16 October 2026)

Pasco Weather Records (USC00456400)

Record envelope, standing records and threshold days for Pasco (USC00456400), Washington, United States, with 52 years of record.

Key Facts for Pasco

  • Pasco (USC00456400) is a weather station in Washington, United States at 46.23 latitude and -119.10 longitude, 107 m (350 ft) above sea level.
  • The station reports from 1900 to 1951, 52 years of record.
  • 1,460 records set at Pasco still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Washington, United States, 46.23 latitude, -119.10 longitude.
  • Elevation: 107 m (350 ft).
  • Period of record: 1900 to 1951, 52 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Pasco, with 2026 drawn through them The band shows the record high and record low for each calendar day at Pasco. 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 Pasco. 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 Pasco, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.2 C (63.0 F)-21.7 C (-7.1 F)n/an/a
Feb19.4 C (66.9 F)-22.8 C (-9.0 F)n/an/a
Mar25.6 C (78.1 F)-9.4 C (15.1 F)n/an/a
Apr35.0 C (95.0 F)-4.4 C (24.1 F)n/an/a
May40.6 C (105.1 F)1.7 C (35.1 F)n/an/a
Jun42.2 C (108.0 F)6.1 C (43.0 F)n/an/a
Jul42.8 C (109.0 F)7.8 C (46.0 F)n/an/a
Aug43.9 C (111.0 F)7.2 C (45.0 F)n/an/a
Sep38.9 C (102.0 F)-1.1 C (30.0 F)n/an/a
Oct30.6 C (87.1 F)-3.9 C (25.0 F)n/an/a
Nov25.6 C (78.1 F)-24.4 C (-11.9 F)n/an/a
Dec19.4 C (66.9 F)-9.4 C (15.1 F)n/an/a

Which Years Hold Standing Records

1,460 standing records
Standing records at Pasco by the year they were set 1,460 records at Pasco still stand. 1934 holds the most, with 411. 02004006001900: 2721901: 3601902: 1591903: 1291933: 371934: 4111935: 921900190119021903193319341935
1,460 records at Pasco still stand. 1934 holds the most, with 411.
Standing records at Pasco by the year they were set
Year setStanding records
1900272
1901360
1902159
1903129
193337
1934411
193592

Wettest Day of Each Month

Jan: 17.8 mm (0.7 in)
Record daily precipitation for each month at Pasco The wettest day on record for each calendar month at Pasco. The most was 17.8 mm (0.7 in) on 30 January 1902. 05101520 Jan: 17.8 mm (0.7 in), 30 January 1902 Jan Feb: 15.2 mm (0.6 in), 7 February 1902 Feb Mar: 5.1 mm (0.20 in), 27 March 1934 Mar Apr: 8.9 mm (0.35 in), 6 April 1900 Apr May: 13.5 mm (0.5 in), 2 May 1905 May Jun: 12.7 mm (0.5 in), 17 June 1904 Jun Jul: 2.5 mm (0.10 in), 14 July 1904 Jul Aug: 2.5 mm (0.10 in), 27 August 1900 Aug Sep: 13.5 mm (0.5 in), 1 September 1901 Sep Oct: 8.9 mm (0.35 in), 5 October 1950 Oct Nov: 15.2 mm (0.6 in), 19 November 1900 Nov Dec: 9.9 mm (0.39 in), 3 December 1950 Dec
The wettest day on record for each calendar month at Pasco. The most was 17.8 mm (0.7 in) on 30 January 1902.
Record daily precipitation for each month at Pasco
MonthRecord daily precipitation (mm)Date
Jan17.8 mm (0.7 in)30 January 1902
Feb15.2 mm (0.6 in)7 February 1902
Mar5.1 mm (0.20 in)27 March 1934
Apr8.9 mm (0.35 in)6 April 1900
May13.5 mm (0.5 in)2 May 1905
Jun12.7 mm (0.5 in)17 June 1904
Jul2.5 mm (0.10 in)14 July 1904
Aug2.5 mm (0.10 in)27 August 1900
Sep13.5 mm (0.5 in)1 September 1901
Oct8.9 mm (0.35 in)5 October 1950
Nov15.2 mm (0.6 in)19 November 1900
Dec9.9 mm (0.39 in)3 December 1950

Period of Record Coverage

1900 to 1935
Days with data per year at Pasco 7 years of record at Pasco, 1900 to 1935. 5 years have data for under 90 percent of days and are left out of rankings: 1900, 1902, 1903, 1933, 1935. 1900: 209 of 365 days1901: 332 of 365 days1902: 172 of 365 days1903: 110 of 365 days1933: 31 of 365 days1934: 356 of 365 days1935: 86 of 365 days19001935
7 years of record at Pasco, 1900 to 1935. 5 years have data for under 90 percent of days and are left out of rankings: 1900, 1902, 1903, 1933, 1935.
Days with data per year at Pasco
YearDays with dataShare of yearComplete
190020957%No
190133291%Yes
190217247%No
190311030%No
1933318%No
193435698%Yes
19358624%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1900 to 1951
Yearly extremes at Pasco: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.9 C (111.0 F)190142.2 C (108.0 F)7
Coldest night (TNn)-24.4 C (-11.9 F)1900-12.2 C (10.0 F)7
Wettest day (Rx1day)17.8 mm (0.7 in)190211.6 mm (0.5 in)12
Wettest five days (Rx5day)33.8 mm (1.3 in)195115.8 mm (0.6 in)12
Longest dry spell (CDD)122 days190356 days12

Hottest day (TXx)

Hottest day (TXx) at Pasco by year The hottest day of the year at Pasco, 1900 to 1951. The record is 43.9 C (111.0 F) in 1901, marked on the chart; the median year is 42.2 C (108.0 F). 1020304050190019101920193019401950Record: 43.9 C (111.0 F) in 1901
The hottest day of the year at Pasco, 1900 to 1951. The record is 43.9 C (111.0 F) in 1901, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Pasco by year
YearHottest day (TXx)
190035.6 C (96.1 F)
190143.9 C (111.0 F)
190242.2 C (108.0 F)
190342.2 C (108.0 F)
1904n/a
1905n/a
193319.4 C (66.9 F)
193442.8 C (109.0 F)
193517.2 C (63.0 F)
1949n/a
1950n/a
1951n/a

Coldest night (TNn)

Coldest night (TNn) at Pasco by year The coldest night of the year at Pasco, 1900 to 1951. The record is -24.4 C (-11.9 F) in 1900, marked on the chart; the median year is -12.2 C (10.0 F). -30-20-10010190019101920193019401950Record: -24.4 C (-11.9 F) in 1900
The coldest night of the year at Pasco, 1900 to 1951. The record is -24.4 C (-11.9 F) in 1900, marked on the chart; the median year is -12.2 C (10.0 F).
Coldest night (TNn) at Pasco by year
YearColdest night (TNn)
1900-24.4 C (-11.9 F)
1901-12.2 C (10.0 F)
1902-22.8 C (-9.0 F)
19037.2 C (45.0 F)
1904n/a
1905n/a
1933-6.7 C (19.9 F)
1934-7.8 C (18.0 F)
1935-21.7 C (-7.1 F)
1949n/a
1950n/a
1951n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Pasco by year The wettest day of the year at Pasco, 1900 to 1951. The record is 17.8 mm (0.7 in) in 1902, marked on the chart; the median year is 11.6 mm (0.5 in). 05101520190019101920193019401950Record: 17.8 mm (0.7 in) in 1902
The wettest day of the year at Pasco, 1900 to 1951. The record is 17.8 mm (0.7 in) in 1902, marked on the chart; the median year is 11.6 mm (0.5 in).
Wettest day (Rx1day) at Pasco by year
YearWettest day (Rx1day)
190015.2 mm (0.6 in)
190113.5 mm (0.5 in)
190217.8 mm (0.7 in)
19030.5 mm (0.02 in)
190412.7 mm (0.5 in)
190513.5 mm (0.5 in)
19336.4 mm (0.25 in)
19348.4 mm (0.33 in)
19355.3 mm (0.21 in)
19492.0 mm (0.08 in)
195013.2 mm (0.5 in)
195110.4 mm (0.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Pasco by year The wettest five days of the year at Pasco, 1900 to 1951. The record is 33.8 mm (1.3 in) in 1951, marked on the chart; the median year is 15.8 mm (0.6 in). 010203040190019101920193019401950Record: 33.8 mm (1.3 in) in 1951
The wettest five days of the year at Pasco, 1900 to 1951. The record is 33.8 mm (1.3 in) in 1951, marked on the chart; the median year is 15.8 mm (0.6 in).
Wettest five days (Rx5day) at Pasco by year
YearWettest five days (Rx5day)
190017.7 mm (0.7 in)
190121.1 mm (0.8 in)
190233.2 mm (1.3 in)
19030.5 mm (0.02 in)
190412.7 mm (0.5 in)
190513.5 mm (0.5 in)
193316.3 mm (0.6 in)
193415.2 mm (0.6 in)
19355.4 mm (0.21 in)
19494.1 mm (0.16 in)
195024.1 mm (0.9 in)
195133.8 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Pasco by year The longest dry spell of the year at Pasco, 1900 to 1951. The record is 122 days in 1903, marked on the chart; the median year is 56 days. 050100150190019101920193019401950Record: 122 days in 1903
The longest dry spell of the year at Pasco, 1900 to 1951. The record is 122 days in 1903, marked on the chart; the median year is 56 days.
Longest dry spell (CDD) at Pasco by year
YearLongest dry spell (CDD)
190044 days
190180 days
190272 days
1903122 days
190455 days
190535 days
193310 days
193456 days
193526 days
194913 days
1950101 days
195169 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.

Download the Data

  • Data for Pasco standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Pasco 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).