Bristow climate

Bristow Weather in August

NOAA 1991-2020 normals for Manassas, 3.9 km from Bristow

Average highs run from 87°F on August 1 to 83°F on August 31, and lows from 69°F to 64°F.

August day by day

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

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

August at a glance

Average high
85°F
Average low
67°F
Record high
104°FAug 20, 1983
Record low
38°FAug 29, 1982
Chance of a freeze
0%
Days of 90°F or more
10.8
Daylight
14 h 09 min to 13 h 04 min
Cloud cover
55%
Humidity
69%
Dew point
64°F
Wind
4.0 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 187°F69°F100°F 198054°F 19970%
Aug 287°F69°F101°F 202452°F 19980%
Aug 387°F68°F99°F 199150°F 19760%
Aug 487°F68°F99°F 200251°F 19760%
Aug 587°F68°F99°F 199554°F 19850%
Aug 687°F68°F96°F 197750°F 19660%
Aug 787°F68°F97°F 200749°F 19940%
Aug 887°F68°F101°F 200749°F 19890%
Aug 987°F68°F97°F 198047°F 19890%
Aug 1086°F68°F97°F 200951°F 19990%
Aug 1186°F68°F99°F 202147°F 19720%
Aug 1286°F67°F100°F 202151°F 19620%
Aug 1386°F67°F99°F 201650°F 19640%
Aug 1486°F67°F100°F 198549°F 19830%
Aug 1586°F67°F102°F 198845°F 19640%
Aug 1686°F67°F100°F 199746°F 19790%
Aug 1786°F67°F101°F 198844°F 19790%
Aug 1885°F66°F98°F 200945°F 19810%
Aug 1985°F66°F95°F 200251°F 19980%
Aug 2085°F66°F104°F 198347°F 19640%
Aug 2185°F66°F96°F 196247°F 19760%
Aug 2285°F66°F101°F 198349°F 20240%
Aug 2385°F65°F96°F 199847°F 19810%
Aug 2484°F65°F97°F 199846°F 19710%
Aug 2584°F65°F97°F 199847°F 19710%
Aug 2684°F65°F95°F 197548°F 19770%
Aug 2784°F65°F100°F 198746°F 19690%
Aug 2884°F64°F99°F 202444°F 19860%
Aug 2983°F64°F98°F 199138°F 19820%
Aug 3083°F64°F99°F 199141°F 19860%
Aug 3183°F64°F98°F 199143°F 19760%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Bristow, 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 (EDT).

August 1
sunrise 6:12 AM, sunset 8:21 PM
August 31
sunrise 6:38 AM, sunset 7:42 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00445204 (Manassas), public domain. Records: NOAA GHCN-Daily, station USW00093738, 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.