Johnson County Weather in August
Average highs run from 82°F on August 1 to 80°F on August 31, and lows from 61°F to 57°F. Normal precipitation for the month is 4.16 in over about 10 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 81°F
- Average low
- 59°F
- Precipitation
- 4.16 in
- Record high
- 99°FAug 7, 1900
- Record low
- 43°FAug 9, 1989
- Chance of a freeze
- 0%
- Days of 90°F or more
- 0.9
- Daylight
- 13 h 59 min to 12 h 59 min
- Cloud cover
- 60%
- Humidity
- 75%
- Dew point
- 60°F
- Wind
- 3.8 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 |
|---|---|---|---|---|---|---|
| Aug 1 | 82°F | 61°F | 97°F 1896 | 51°F 1997 | 36% | 0% |
| Aug 2 | 82°F | 61°F | 96°F 2006 | 49°F 1895 | 36% | 0% |
| Aug 3 | 82°F | 61°F | 96°F 1897 | 53°F 1895 | 36% | 0% |
| Aug 4 | 82°F | 60°F | 96°F 1897 | 52°F 1907 | 36% | 0% |
| Aug 5 | 82°F | 60°F | 96°F 1896 | 51°F 1997 | 36% | 0% |
| Aug 6 | 82°F | 60°F | 98°F 1900 | 48°F 2004 | 35% | 0% |
| Aug 7 | 82°F | 60°F | 99°F 1900 | 49°F 2004 | 35% | 0% |
| Aug 8 | 82°F | 60°F | 96°F 1900 | 45°F 1989 | 35% | 0% |
| Aug 9 | 82°F | 60°F | 96°F 1901 | 43°F 1989 | 35% | 0% |
| Aug 10 | 82°F | 60°F | 97°F 1900 | 44°F 1989 | 35% | 0% |
| Aug 11 | 82°F | 60°F | 96°F 1900 | 49°F 1989 | 34% | 0% |
| Aug 12 | 82°F | 60°F | 96°F 1896 | 51°F 1989 | 34% | 0% |
| Aug 13 | 82°F | 60°F | 95°F 1896 | 52°F 2014 | 34% | 0% |
| Aug 14 | 82°F | 60°F | 95°F 1895 | 54°F 2000 | 34% | 0% |
| Aug 15 | 82°F | 60°F | 96°F 1896 | 53°F 2013 | 33% | 0% |
| Aug 16 | 82°F | 59°F | 99°F 2001 | 53°F 2013 | 33% | 0% |
| Aug 17 | 82°F | 59°F | 96°F 1988 | 56°F 1943 | 33% | 0% |
| Aug 18 | 82°F | 59°F | 98°F 1988 | 55°F 1899 | 33% | 0% |
| Aug 19 | 82°F | 59°F | 95°F 1899 | 50°F 1943 | 32% | 0% |
| Aug 20 | 82°F | 59°F | 95°F 1899 | 52°F 1940 | 32% | 0% |
| Aug 21 | 81°F | 59°F | 99°F 1983 | 50°F 2024 | 32% | 0% |
| Aug 22 | 81°F | 59°F | 98°F 1983 | 49°F 1997 | 31% | 0% |
| Aug 23 | 81°F | 59°F | 99°F 2007 | 51°F 1909 | 31% | 0% |
| Aug 24 | 81°F | 58°F | 97°F 2007 | 53°F 1997 | 30% | 0% |
| Aug 25 | 81°F | 58°F | 97°F 1899 | 51°F 1942 | 30% | 0% |
| Aug 26 | 81°F | 58°F | 99°F 1943 | 51°F 2025 | 30% | 0% |
| Aug 27 | 81°F | 58°F | 95°F 1909 | 48°F 2025 | 29% | 0% |
| Aug 28 | 81°F | 58°F | 93°F 1940 | 48°F 2025 | 29% | 0% |
| Aug 29 | 81°F | 57°F | 95°F 1897 | 43°F 1986 | 29% | 0% |
| Aug 30 | 81°F | 57°F | 95°F 2024 | 50°F 1986 | 28% | 0% |
| Aug 31 | 80°F | 57°F | 96°F 1900 | 48°F 1999 | 28% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:34 AM, sunset 8:33 PM
- August 31
- sunrise 6:58 AM, sunset 7:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00406292 (Mtn City 2), public domain. Records: NOAA GHCN-Daily, station USC00402806, 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.