Diamond Lake Weather Forecast
- 74
- 89
Slight Chance Thunderstorms
- 73
- 93
Slight Chance Thunderstorms
- 70
- 87
Chance Thunderstorms
- 70
- 85
Chance Thunderstorms
- 70
- 88
Mostly Sunny
- 71
- 91
Slight Chance Thunderstorms
Today 22 Jul Poweshiek
Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 80s. Southeast Winds 10 to 15 Mph. Chance of rain 20 percent. Heat index Values up to 102.
Tonight 22 Jul Poweshiek
Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 70s. South Winds around 10 Mph. Chance of rain 20 percent. Heat index Values up to 101 early in the evening.
Diamond Lake Temperature Statistics
July Temperature
Pella, Pella Municipal Airport (23.6 miles)
Lowest 17 July, 2025
59 °FAverage July
75 °FHighest 3 July, 2025
90.1 °F
Climate (2020–Present)
Pella, Pella Municipal Airport (23.6 miles)
Average Low 2020–2025
42 °FAverage 2020–2025
51.8 °FAverage High 2020–2025
62 °F