Washington County climate

Washington County Weather in May

NOAA 1991-2020 normals for Bartlesville F P Fld, 12.4 km from Washington County

Average highs run from 75°F on May 1 to 83°F on May 31, and lows from 50°F to 60°F. Normal precipitation for the month is 5.68 in over about 11 wet days.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Washington County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
79°F
Average low
55°F
Precipitation
5.68 in
Record high
96°FMay 5, 2014
Record low
31°FMay 2, 2014
Chance of a freeze
7%
Days of 90°F or more
2.8
Daylight
13 h 42 min to 14 h 29 min
Cloud cover
59%
Humidity
76%
Dew point
59°F
Wind
11.0 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
May 175°F50°F85°F 200734°F 202335%0%
May 275°F51°F86°F 201331°F 201436%0%
May 375°F51°F85°F 201232°F 202336%0%
May 475°F51°F90°F 201235°F 201336%0%
May 576°F52°F96°F 201436°F 202136%0%
May 676°F52°F93°F 201439°F 201136%0%
May 776°F52°F92°F 202339°F 202636%0%
May 876°F53°F90°F 201837°F 201036%0%
May 977°F53°F91°F 201834°F 202036%0%
May 1077°F53°F94°F 201839°F 201936%0%
May 1177°F54°F90°F 202238°F 202036%0%
May 1278°F54°F90°F 202236°F 201336%0%
May 1378°F54°F91°F 202238°F 201336%0%
May 1478°F55°F92°F 202541°F 202136%0%
May 1578°F55°F93°F 201339°F 201436%0%
May 1679°F55°F89°F 201235°F 201436%0%
May 1779°F56°F88°F 201241°F 201436%0%
May 1879°F56°F88°F 201238°F 201136%0%
May 1980°F56°F90°F 202245°F 201636%0%
May 2080°F57°F88°F 201247°F 201636%0%
May 2180°F57°F90°F 202444°F 202336%0%
May 2281°F57°F88°F 201445°F 201535%0%
May 2381°F58°F91°F 201445°F 202235%0%
May 2481°F58°F91°F 201249°F 201735%0%
May 2582°F58°F88°F 201042°F 201735%0%
May 2682°F59°F91°F 201246°F 201735%0%
May 2782°F59°F92°F 201846°F 202235%0%
May 2882°F59°F92°F 201750°F 202535%0%
May 2983°F60°F95°F 201250°F 202135%0%
May 3083°F60°F94°F 201247°F 202135%0%
May 3183°F60°F93°F 200952°F 202534%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Washington County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 6:30 AM, sunset 8:12 PM
May 31
sunrise 6:07 AM, sunset 8:36 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00003959 (Bartlesville F P Fld), public domain. Records: NOAA GHCN-Daily, station USC00340546, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.