Columbia County climate

Columbia County Weather in August

NOAA 1991-2020 normals for Vernonia #2, 11.8 km from Columbia County

Average highs run from 79°F on August 1 to 77°F on August 31, and lows from 48°F to 45°F. Normal precipitation for the month is 0.55 in over about 4 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 Columbia County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
47°F
Precipitation
0.55 in
Record high
108°FAug 10, 1981
Record low
35°FAug 16, 1935
Chance of a freeze
0%
Days of 90°F or more
2.8
Daylight
14 h 46 min to 13 h 20 min
Cloud cover
49%
Humidity
79%
Dew point
54°F
Wind
3.8 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 179°F48°F99°F 196540°F 194110%0%
Aug 279°F48°F98°F 201739°F 193010%0%
Aug 379°F48°F101°F 201740°F 193010%0%
Aug 479°F48°F100°F 201741°F 193110%0%
Aug 579°F48°F97°F 199339°F 192910%0%
Aug 679°F48°F94°F 202641°F 193910%0%
Aug 779°F48°F97°F 202241°F 197510%0%
Aug 879°F48°F99°F 197240°F 193510%0%
Aug 979°F48°F103°F 196043°F 193910%0%
Aug 1079°F48°F108°F 198142°F 193810%0%
Aug 1179°F48°F106°F 198141°F 193110%0%
Aug 1279°F47°F100°F 193538°F 192811%0%
Aug 1379°F47°F102°F 197738°F 193111%0%
Aug 1479°F47°F101°F 200240°F 193711%0%
Aug 1578°F47°F100°F 201037°F 193711%0%
Aug 1678°F47°F100°F 201235°F 193512%0%
Aug 1778°F47°F99°F 197741°F 192812%0%
Aug 1878°F47°F99°F 197739°F 197312%0%
Aug 1978°F47°F100°F 201636°F 192813%0%
Aug 2078°F47°F100°F 200936°F 192813%0%
Aug 2178°F47°F96°F 195136°F 193014%0%
Aug 2278°F46°F96°F 193439°F 193114%0%
Aug 2378°F46°F97°F 202538°F 193815%0%
Aug 2477°F46°F98°F 202539°F 193015%0%
Aug 2577°F46°F98°F 195838°F 192916%0%
Aug 2677°F46°F97°F 201641°F 193016%0%
Aug 2777°F46°F97°F 198638°F 193717%0%
Aug 2877°F46°F99°F 201737°F 193717%0%
Aug 2977°F46°F100°F 196737°F 193918%0%
Aug 3077°F45°F98°F 202240°F 193618%0%
Aug 3177°F45°F94°F 198739°F 197319%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Columbia County, 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 5:55 AM, sunset 8:41 PM
August 31
sunrise 6:32 AM, sunset 7:52 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00358884 (Vernonia #2), public domain. Records: NOAA GHCN-Daily, station USC00454769, 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.