Crestline climate

Crestline Weather in August

NOAA 1991-2020 normals for Lake Arrowhead, 9 km from Crestline

Average highs run from 82°F on August 1 to 80°F on August 31, and lows from 58°F to 56°F. Normal precipitation for the month is 0.13 in over about 1 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 Crestline, 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
57°F
Precipitation
0.13 in
Record high
113°FAug 30, 2007
Record low
46°FAug 27, 1954
Chance of a freeze
1%
Days of 90°F or more
3.8
Daylight
13 h 50 min to 12 h 54 min
Cloud cover
16%
Humidity
39%
Dew point
47°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 182°F58°F107°F 190051°F 19032%0%
Aug 283°F58°F106°F 191850°F 19092%0%
Aug 383°F58°F110°F 191850°F 19092%0%
Aug 483°F58°F109°F 199849°F 19532%0%
Aug 583°F58°F108°F 199450°F 19332%0%
Aug 683°F58°F109°F 201248°F 19502%0%
Aug 783°F58°F108°F 197052°F 19002%0%
Aug 883°F58°F108°F 201251°F 19482%0%
Aug 983°F58°F112°F 189849°F 19162%0%
Aug 1083°F58°F108°F 189852°F 19122%0%
Aug 1183°F58°F107°F 189850°F 19162%0%
Aug 1283°F58°F110°F 189850°F 19492%0%
Aug 1383°F58°F111°F 193351°F 19042%0%
Aug 1482°F57°F108°F 190649°F 19102%0%
Aug 1582°F57°F105°F 189849°F 19102%0%
Aug 1682°F57°F106°F 199249°F 19182%0%
Aug 1782°F57°F109°F 198648°F 19182%0%
Aug 1882°F57°F105°F 191148°F 19182%0%
Aug 1982°F57°F106°F 198649°F 19162%0%
Aug 2082°F57°F107°F 198648°F 19002%0%
Aug 2182°F57°F107°F 196149°F 19182%0%
Aug 2282°F57°F106°F 195649°F 19062%0%
Aug 2381°F57°F109°F 193149°F 19062%0%
Aug 2481°F57°F109°F 198550°F 19062%0%
Aug 2581°F56°F111°F 198547°F 19082%0%
Aug 2681°F56°F108°F 201150°F 18992%0%
Aug 2781°F56°F110°F 198146°F 19542%0%
Aug 2880°F56°F109°F 197650°F 19422%0%
Aug 2980°F56°F112°F 199849°F 19252%0%
Aug 3080°F56°F113°F 200746°F 20102%0%
Aug 3180°F56°F110°F 200749°F 19122%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Crestline, in percent, and of at least 0.1 inch of snowfall.00.511.522.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 6:00 AM, sunset 7:50 PM
August 31
sunrise 6:22 AM, sunset 7:16 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044671 (Lake Arrowhead), public domain. Records: NOAA GHCN-Daily, station USC00047306, 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.