Vashon climate

Vashon Weather in August

NOAA 1991-2020 normals for Seattle Tacoma Intl AP, 11 km from Vashon

Average highs run from 79°F on August 1 to 76°F on August 31, and lows from 58°F to 56°F. Normal precipitation for the month is 0.97 in over about 5 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 Vashon, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
78°F
Average low
57°F
Precipitation
0.97 in
Record high
99°FAug 9, 1960
Record low
44°FAug 4, 1950
Chance of a freeze
0%
Days of 90°F or more
1.2
Daylight
14 h 55 min to 13 h 24 min
Cloud cover
48%
Humidity
76%
Dew point
56°F
Wind
3.6 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°F58°F92°F 194950°F 195314%0%
Aug 279°F58°F91°F 201746°F 195314%0%
Aug 379°F58°F94°F 201746°F 195614%0%
Aug 479°F58°F95°F 199344°F 195014%0%
Aug 579°F58°F93°F 201249°F 194814%0%
Aug 679°F58°F91°F 197250°F 195114%0%
Aug 779°F58°F95°F 197248°F 194814%0%
Aug 879°F58°F98°F 196047°F 197414%0%
Aug 979°F58°F99°F 196047°F 195014%0%
Aug 1078°F58°F98°F 198146°F 195414%0%
Aug 1178°F58°F96°F 201446°F 195415%0%
Aug 1278°F58°F96°F 197749°F 194915%0%
Aug 1378°F58°F92°F 200244°F 195515%0%
Aug 1478°F58°F95°F 201044°F 195515%0%
Aug 1578°F57°F96°F 201047°F 195515%0%
Aug 1678°F57°F98°F 196750°F 198615%0%
Aug 1778°F57°F96°F 197745°F 195116%0%
Aug 1878°F57°F88°F 199147°F 195116%0%
Aug 1977°F57°F95°F 201648°F 195116%0%
Aug 2077°F57°F91°F 201647°F 195217%0%
Aug 2177°F57°F91°F 201846°F 197317%0%
Aug 2277°F57°F89°F 201845°F 196018%0%
Aug 2377°F57°F91°F 198846°F 195518%0%
Aug 2477°F57°F90°F 202545°F 195118%0%
Aug 2577°F57°F91°F 201645°F 195419%0%
Aug 2676°F57°F92°F 201646°F 195719%0%
Aug 2776°F56°F88°F 198644°F 195220%0%
Aug 2876°F56°F95°F 196746°F 195220%0%
Aug 2976°F56°F91°F 197444°F 195121%0%
Aug 3076°F56°F90°F 202245°F 195021%0%
Aug 3176°F56°F92°F 198746°F 195021%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Vashon, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:48 AM, sunset 8:43 PM
August 31
sunrise 6:28 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 USW00024233 (Seattle Tacoma Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00024233, 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.