Lake Keomah State Park Weather Forecast
- 46
- 72
Sunny
- 52
- 74
Mostly Sunny
- 56
- 79
Partly Sunny
- 56
- 79
Mostly Sunny
- 54
- 75
Partly Sunny
- 56
- 76
Partly Sunny
- 56
- 76
Partly Sunny
Today 25 Aug Mahaska
Sunny. Near steady temperature in the lower 70s. Northwest Winds 5 to 10 Mph.
Tonight 25 Aug Mahaska
Mostly clear. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.
Lake Keomah State Park Temperature Statistics
August Temperature
Oskaloosa, Oskaloosa Municipal Airport (5 miles)
Lowest 1 August, 2025
57.4 °FAverage August
75.6 °FHighest 17 August, 2025
95 °F
Climate (2020–Present)
Oskaloosa, Oskaloosa Municipal Airport (5 miles)
Average Low 2020–2025
43.5 °FAverage 2020–2025
53.7 °FAverage High 2020–2025
64.5 °F