Lewisville climate

Lewisville Weather in July

NOAA 1991-2020 normals for Grapevine Dam, 12.1 km from Lewisville

Average highs run from 93°F on July 1 to 97°F on July 31, and lows from 73°F to 75°F. Normal precipitation for the month is 2.25 in over about 5 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 Lewisville, in °F, with the record for each date.5060708090100110151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
95°F
Average low
74°F
Precipitation
2.25 in
Record high
107°FJul 18, 2022
Record low
59°FJul 1, 2013
Chance of a freeze
0%
Days of 90°F or more
28.3
Daylight
14 h 18 min to 13 h 47 min
Cloud cover
41%
Humidity
60%
Dew point
68°F
Wind
8.9 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 193°F73°F99°F 202459°F 201323%0%
Jul 293°F73°F100°F 200967°F 201322%0%
Jul 393°F73°F100°F 201162°F 201322%0%
Jul 494°F73°F100°F 200967°F 201722%0%
Jul 594°F73°F100°F 202269°F 201621%0%
Jul 694°F73°F101°F 201170°F 200721%0%
Jul 794°F73°F101°F 202268°F 200621%0%
Jul 894°F74°F104°F 201170°F 200720%0%
Jul 994°F74°F104°F 202270°F 202420%0%
Jul 1094°F74°F101°F 202271°F 201619%0%
Jul 1195°F74°F100°F 201368°F 202119%0%
Jul 1295°F74°F102°F 202370°F 202118%0%
Jul 1395°F74°F104°F 202271°F 202118%0%
Jul 1495°F74°F102°F 201167°F 201318%0%
Jul 1595°F74°F104°F 201167°F 201317%0%
Jul 1695°F74°F103°F 200666°F 201417%0%
Jul 1796°F74°F104°F 200665°F 201417%0%
Jul 1896°F74°F107°F 202262°F 201416%0%
Jul 1996°F74°F106°F 202266°F 201416%0%
Jul 2096°F74°F107°F 202266°F 201416%0%
Jul 2196°F75°F107°F 201871°F 200716%0%
Jul 2296°F75°F107°F 201871°F 200916%0%
Jul 2396°F75°F101°F 201169°F 202316%0%
Jul 2497°F75°F103°F 201167°F 200716%0%
Jul 2597°F75°F105°F 201164°F 201916%0%
Jul 2697°F75°F103°F 202367°F 201916%0%
Jul 2797°F75°F103°F 201170°F 201916%0%
Jul 2897°F75°F102°F 201269°F 201316%0%
Jul 2997°F75°F104°F 201270°F 202116%0%
Jul 3097°F75°F103°F 202567°F 200916%0%
Jul 3197°F75°F105°F 202568°F 200916%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lewisville, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

July 1
sunrise 6:23 AM, sunset 8:41 PM
July 31
sunrise 6:41 AM, sunset 8:28 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00413691 (Grapevine Dam), public domain. Records: NOAA GHCN-Daily, station USC00417588, 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.