United States · 1991–2020 normal
Johnston in
August.
Typical August weather in Johnston: 28.2°C by day, 17.3°C at night, 106 mm of rain over 7.7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high28.2°C
Typical low17.3°C
Rain106 mm
Wet days7.7
Comfort score 68 this month (September leads the year at 83). Daylight is calculated as 13 h 51 from latitude 41.67°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4862760
- NOAA station
- USC00132209 · DES MOINES WSFO-JOHNSTON
- Station distance
- 7.4 km from the place centre
- Coverage
- Strong coverage · 25 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.