Lake Keomah State Park Weather Forecast
- 67
- 85
Mostly Cloudy
- 67
- 83
Rain Showers Likely
- 67
- 86
Slight Chance Thunderstorms
- 69
- 87
Chance Thunderstorms
- 66
- 87
Chance Thunderstorms
- 63
- 83
Slight Chance Thunderstorms
Today 7 Jul Mahaska
Patchy fog early this morning. Partly cloudy. Humid with Highs in the mid 80s. North Winds around 5 Mph.
Tonight 7 Jul Mahaska
Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Humid with Lows in the upper 60s. South Winds around 5 Mph. Chance of rain 50 percent.
Lake Keomah State Park Temperature Statistics
July Temperature
Oskaloosa, Oskaloosa Municipal Airport (5 miles)
Lowest 1 July, 2025
63.5 °FAverage July
78.8 °FHighest 3 July, 2025
92.3 °F
Climate (2020–Present)
Oskaloosa, Oskaloosa Municipal Airport (5 miles)
Average Low 2020–2025
43.4 °FAverage 2020–2025
53.7 °FAverage High 2020–2025
64.5 °F