McLean climate

McLean Weather in July

NOAA 1991-2020 normals for Dalecarlia Rsvr, 5.5 km from McLean

Average highs run from 88°F on July 1 to 88°F on July 31, and lows from 67°F to 68°F. Normal precipitation for the month is 5.11 in over about 10 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 McLean, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
88°F
Average low
68°F
Precipitation
5.11 in
Record high
105°FJul 7, 2012
Record low
54°FJul 1, 1988
Chance of a freeze
0%
Days of 90°F or more
16.8
Daylight
14 h 51 min to 14 h 12 min
Cloud cover
55%
Humidity
68%
Dew point
65°F
Wind
6.7 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 188°F67°F99°F 194554°F 198833%0%
Jul 288°F67°F102°F 202656°F 195233%0%
Jul 388°F67°F102°F 202658°F 200133%0%
Jul 488°F67°F103°F 202659°F 196733%0%
Jul 588°F68°F102°F 199959°F 196733%0%
Jul 688°F68°F103°F 199957°F 197933%0%
Jul 788°F68°F105°F 201260°F 197033%0%
Jul 888°F68°F102°F 201258°F 198433%0%
Jul 988°F68°F100°F 199358°F 196133%0%
Jul 1088°F68°F102°F 198856°F 196333%0%
Jul 1189°F68°F99°F 198761°F 196333%0%
Jul 1289°F68°F97°F 201157°F 194532%0%
Jul 1389°F68°F100°F 195462°F 197432%0%
Jul 1489°F68°F101°F 202463°F 196332%0%
Jul 1589°F68°F102°F 202460°F 198732%0%
Jul 1689°F68°F104°F 198860°F 194632%0%
Jul 1788°F68°F102°F 198057°F 194632%0%
Jul 1888°F68°F101°F 201260°F 194632%0%
Jul 1988°F68°F99°F 194261°F 196232%0%
Jul 2088°F68°F99°F 199163°F 194732%0%
Jul 2188°F68°F101°F 195758°F 196532%0%
Jul 2288°F68°F102°F 201159°F 194432%0%
Jul 2388°F68°F102°F 201158°F 194732%0%
Jul 2488°F68°F101°F 201057°F 194732%0%
Jul 2588°F68°F100°F 201661°F 194732%0%
Jul 2688°F68°F100°F 201262°F 197632%0%
Jul 2788°F68°F99°F 199759°F 194632%0%
Jul 2888°F68°F100°F 194159°F 196232%0%
Jul 2988°F68°F104°F 201161°F 194632%0%
Jul 3088°F68°F99°F 195360°F 195632%0%
Jul 3188°F68°F103°F 195458°F 195632%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at McLean, 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 5:47 AM, sunset 8:38 PM
July 31
sunrise 6:09 AM, sunset 8:21 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00182325 (Dalecarlia Rsvr), public domain. Records: NOAA GHCN-Daily, station USW00013743, 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.