Three Rivers climate

Three Rivers Weather in August

NOAA 1991-2020 normals for Sunriver, 9.4 km from Three Rivers

Average highs run from 86°F on August 1 to 80°F on August 31, and lows from 42°F to 37°F. Normal precipitation for the month is 0.55 in.

August day by day

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

Normal daily high and low temperature at Three Rivers, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
83°F
Average low
40°F
Precipitation
0.55 in
Record high
101°FAug 9, 2018
Record low
24°FAug 31, 2008
Chance of a freeze
72%
Days of 90°F or more
7.2
Daylight
14 h 34 min to 13 h 15 min
Cloud cover
30%
Humidity
57%
Dew point
45°F
Wind
5.4 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 186°F42°F98°F 200332°F 20060%
Aug 286°F42°F97°F 200932°F 20060%
Aug 386°F42°F95°F 200029°F 20020%
Aug 486°F42°F96°F 199834°F 20070%
Aug 585°F42°F100°F 199825°F 20020%
Aug 685°F42°F96°F 200531°F 20020%
Aug 785°F42°F96°F 200525°F 20020%
Aug 885°F42°F97°F 201328°F 20020%
Aug 985°F41°F101°F 201830°F 20020%
Aug 1084°F41°F100°F 201831°F 20080%
Aug 1184°F41°F98°F 201835°F 20070%
Aug 1284°F41°F96°F 200133°F 20030%
Aug 1384°F41°F96°F 200134°F 20190%
Aug 1484°F41°F98°F 199832°F 20000%
Aug 1583°F40°F97°F 200227°F 20090%
Aug 1683°F40°F99°F 200231°F 20090%
Aug 1783°F40°F101°F 200830°F 20060%
Aug 1883°F40°F97°F 200829°F 20020%
Aug 1983°F40°F94°F 200330°F 20010%
Aug 2082°F40°F97°F 200930°F 20000%
Aug 2182°F39°F97°F 200929°F 20020%
Aug 2282°F39°F92°F 201629°F 20020%
Aug 2382°F39°F93°F 201728°F 20100%
Aug 2482°F39°F92°F 200030°F 20120%
Aug 2581°F39°F90°F 199926°F 20080%
Aug 2681°F38°F95°F 201028°F 20080%
Aug 2781°F38°F94°F 199927°F 20070%
Aug 2881°F38°F99°F 201728°F 20070%
Aug 2981°F38°F97°F 201728°F 20050%
Aug 3080°F38°F96°F 200725°F 20080%
Aug 3180°F37°F95°F 201724°F 20080%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Three Rivers, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:55 AM, sunset 8:29 PM
August 31
sunrise 6:28 AM, sunset 7:43 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00358246 (Sunriver), public domain. Records: NOAA GHCN-Daily, station USC00358246, 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.