Saylorville Lake Weather Forecast
- 65
- 85
Chance Thunderstorms
- 52
- 77
Mostly Sunny
- 50
- 75
Mostly Sunny
- 48
- 71
Mostly Sunny
- 49
- 73
Mostly Sunny
- 55
- 78
Partly Sunny
Today 22 Aug Polk
Mostly sunny. Humid with Highs in the mid 80s. South Winds around 5 Mph.
Tonight 22 Aug Polk
Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Humid with Lows in the mid 60s. Southeast Winds around 5 Mph, becoming northwest after midnight. Chance of rain 50 percent.
Saylorville Lake Temperature Statistics
August Temperature
Ankeny Regional Airport (6.8 miles)
Lowest 3 August, 2025
55.4 °FAverage August
74.7 °FHighest 17 August, 2025
95 °F
Climate (2020–Present)
Ankeny Regional Airport (6.8 miles)
Average Low 2020–2025
41 °FAverage 2020–2025
51.6 °FAverage High 2020–2025
61.7 °F