McHenry County Weather in July
Average highs run from 81°F on July 1 to 85°F on July 31, and lows from 54°F to 55°F. Normal precipitation for the month is 2.50 in over about 6 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 83°F
- Average low
- 55°F
- Precipitation
- 2.50 in
- Record high
- 105°FJul 17, 1977
- Record low
- 39°FJul 10, 1951
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.9
- Daylight
- 16 h 01 min to 15 h 03 min
- Cloud cover
- 50%
- Humidity
- 59%
- Dew point
- 54°F
- Wind
- 9.6 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 81°F | 54°F | 94°F 2003 | 43°F 1951 | 25% | 0% |
| Jul 2 | 81°F | 54°F | 97°F 2021 | 42°F 1968 | 24% | 0% |
| Jul 3 | 81°F | 54°F | 100°F 2021 | 40°F 1967 | 24% | 0% |
| Jul 4 | 81°F | 54°F | 99°F 1989 | 42°F 1992 | 24% | 0% |
| Jul 5 | 81°F | 54°F | 98°F 1948 | 43°F 2023 | 23% | 0% |
| Jul 6 | 82°F | 55°F | 102°F 1981 | 45°F 1984 | 23% | 0% |
| Jul 7 | 82°F | 55°F | 102°F 1981 | 42°F 1958 | 23% | 0% |
| Jul 8 | 82°F | 55°F | 98°F 1989 | 45°F 2003 | 23% | 0% |
| Jul 9 | 82°F | 55°F | 97°F 1970 | 40°F 1955 | 22% | 0% |
| Jul 10 | 82°F | 55°F | 100°F 1957 | 39°F 1951 | 22% | 0% |
| Jul 11 | 83°F | 55°F | 94°F 2026 | 44°F 2023 | 22% | 0% |
| Jul 12 | 83°F | 55°F | 100°F 2026 | 44°F 1993 | 22% | 0% |
| Jul 13 | 83°F | 55°F | 96°F 1980 | 43°F 1967 | 21% | 0% |
| Jul 14 | 83°F | 55°F | 100°F 2017 | 44°F 1993 | 21% | 0% |
| Jul 15 | 83°F | 55°F | 97°F 1960 | 46°F 1958 | 21% | 0% |
| Jul 16 | 84°F | 55°F | 99°F 1949 | 44°F 1976 | 20% | 0% |
| Jul 17 | 84°F | 55°F | 105°F 1977 | 44°F 2009 | 20% | 0% |
| Jul 18 | 84°F | 55°F | 99°F 1974 | 46°F 1951 | 20% | 0% |
| Jul 19 | 84°F | 55°F | 101°F 2012 | 44°F 1949 | 19% | 0% |
| Jul 20 | 84°F | 55°F | 103°F 1960 | 45°F 1972 | 19% | 0% |
| Jul 21 | 85°F | 55°F | 97°F 1955 | 46°F 1992 | 19% | 0% |
| Jul 22 | 85°F | 55°F | 97°F 1985 | 45°F 1949 | 19% | 0% |
| Jul 23 | 85°F | 55°F | 103°F 2007 | 47°F 2004 | 18% | 0% |
| Jul 24 | 85°F | 55°F | 104°F 2007 | 49°F 1968 | 18% | 0% |
| Jul 25 | 85°F | 55°F | 97°F 2024 | 45°F 1962 | 18% | 0% |
| Jul 26 | 85°F | 55°F | 99°F 1988 | 44°F 1967 | 18% | 0% |
| Jul 27 | 85°F | 55°F | 105°F 1988 | 43°F 2013 | 18% | 0% |
| Jul 28 | 85°F | 55°F | 102°F 1975 | 42°F 2013 | 17% | 0% |
| Jul 29 | 85°F | 55°F | 102°F 1975 | 44°F 1949 | 17% | 0% |
| Jul 30 | 85°F | 55°F | 98°F 2005 | 44°F 1958 | 17% | 0% |
| Jul 31 | 85°F | 55°F | 103°F 2007 | 46°F 1995 | 17% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- July 1
- sunrise 5:46 AM, sunset 9:47 PM
- July 31
- sunrise 6:17 AM, sunset 9:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00328792 (Towner 2 Ne), public domain. Records: NOAA GHCN-Daily, station USW00024013, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.