Wilsonville climate

Wilsonville Weather in August

NOAA 1991-2020 normals for N Willamette Exp Stn, 2.7 km from Wilsonville

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 56°F to 54°F. Normal precipitation for the month is 0.53 in over about 3 wet days.

August day by day

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

Normal daily high and low temperature at Wilsonville, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
55°F
Precipitation
0.53 in
Record high
107°FAug 14, 2023
Record low
44°FAug 24, 2012
Chance of a freeze
0%
Days of 90°F or more
5.5
Daylight
14 h 42 min to 13 h 18 min
Cloud cover
44%
Humidity
75%
Dew point
54°F
Wind
4.5 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
Aug 184°F56°F101°F 201550°F 200210%0%
Aug 284°F56°F106°F 201748°F 200210%0%
Aug 384°F56°F104°F 201748°F 200210%0%
Aug 484°F56°F101°F 201250°F 200610%0%
Aug 584°F56°F93°F 200550°F 200210%0%
Aug 684°F56°F95°F 202649°F 201610%0%
Aug 784°F56°F100°F 202249°F 200210%0%
Aug 884°F56°F96°F 201750°F 200210%0%
Aug 983°F56°F99°F 200452°F 200210%0%
Aug 1083°F56°F101°F 202550°F 200710%0%
Aug 1183°F56°F103°F 202148°F 200710%0%
Aug 1283°F56°F104°F 202148°F 200610%0%
Aug 1383°F56°F104°F 200250°F 200010%0%
Aug 1483°F56°F107°F 202352°F 201711%0%
Aug 1583°F56°F104°F 200849°F 200011%0%
Aug 1682°F55°F105°F 202349°F 200011%0%
Aug 1782°F55°F98°F 201248°F 200011%0%
Aug 1882°F55°F101°F 201649°F 199812%0%
Aug 1982°F55°F101°F 201648°F 200012%0%
Aug 2082°F55°F99°F 201647°F 200012%0%
Aug 2182°F55°F95°F 201849°F 201013%0%
Aug 2281°F55°F101°F 202549°F 200613%0%
Aug 2381°F55°F101°F 202547°F 202113%0%
Aug 2481°F55°F95°F 201044°F 201214%0%
Aug 2581°F55°F96°F 201047°F 201214%0%
Aug 2681°F54°F96°F 201650°F 201514%0%
Aug 2780°F54°F100°F 201946°F 200015%0%
Aug 2880°F54°F99°F 201746°F 200015%0%
Aug 2980°F54°F95°F 200746°F 201015%0%
Aug 3080°F54°F96°F 202446°F 200816%0%
Aug 3180°F54°F94°F 202446°F 200816%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Wilsonville, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:56 AM, sunset 8:38 PM
August 31
sunrise 6:32 AM, sunset 7:50 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356151 (N Willamette Exp Stn), public domain. Records: NOAA GHCN-Daily, station USW00094281, 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.