Ashburn climate

Ashburn Weather in July

NOAA 1991-2020 normals for WFO Sterling, 7.5 km from Ashburn

Average highs run from 87°F on July 1 to 87°F on July 31, and lows from 66°F to 67°F. Normal precipitation for the month is 4.06 in over about 12 wet days.

July day by day

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

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

July at a glance

Average high
87°F
Average low
67°F
Precipitation
4.06 in
Record high
104°FJul 23, 2011
Record low
39°FJul 1, 1988
Chance of a freeze
0%
Days of 90°F or more
12.0
Daylight
14 h 52 min to 14 h 12 min
Cloud cover
56%
Humidity
67%
Dew point
64°F
Wind
5.6 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
Jul 187°F66°F97°F 202639°F 198837%0%
Jul 287°F67°F98°F 202642°F 198837%0%
Jul 387°F67°F98°F 202647°F 200137%0%
Jul 487°F67°F99°F 202645°F 198637%0%
Jul 587°F67°F100°F 202451°F 199637%0%
Jul 687°F67°F100°F 199944°F 197937%0%
Jul 787°F67°F101°F 201046°F 197937%0%
Jul 887°F67°F101°F 198847°F 198336%0%
Jul 987°F67°F100°F 201247°F 198436%0%
Jul 1087°F67°F97°F 199055°F 198336%0%
Jul 1187°F67°F99°F 198849°F 199736%0%
Jul 1287°F68°F97°F 198845°F 200236%0%
Jul 1387°F68°F96°F 198648°F 197836%0%
Jul 1487°F68°F98°F 202450°F 200136%0%
Jul 1587°F68°F100°F 202450°F 198736%0%
Jul 1687°F68°F102°F 202454°F 199136%0%
Jul 1787°F68°F103°F 198852°F 198736%0%
Jul 1887°F68°F99°F 198850°F 198536%0%
Jul 1987°F68°F101°F 198657°F 198436%0%
Jul 2087°F68°F99°F 201955°F 200136%0%
Jul 2187°F68°F100°F 201950°F 200136%0%
Jul 2287°F68°F99°F 201150°F 200136%0%
Jul 2387°F68°F104°F 201150°F 198336%0%
Jul 2487°F68°F98°F 199146°F 198536%0%
Jul 2587°F68°F101°F 201056°F 198036%0%
Jul 2687°F67°F102°F 201655°F 198336%0%
Jul 2787°F67°F98°F 201255°F 198336%0%
Jul 2887°F67°F96°F 199352°F 200136%0%
Jul 2987°F67°F99°F 199351°F 197835%0%
Jul 3087°F67°F102°F 201150°F 201435%0%
Jul 3187°F67°F96°F 198346°F 199735%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Ashburn, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

July 1
sunrise 5:48 AM, sunset 8:40 PM
July 31
sunrise 6:10 AM, sunset 8:22 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00448084 (WFO Sterling), public domain. Records: NOAA GHCN-Daily, station USC00448084, 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.