Princeton Weather Forecast
- 73
- 90
Mostly Sunny
- 73
- 94
Mostly Sunny
- 71
- 90
Chance Thunderstorms
- 71
- 89
Chance Thunderstorms
- 73
- 91
Mostly Sunny
- 73
- 95
Mostly Sunny
Today 22 Jul Mercer
Mostly cloudy. A slight chance of Showers and Thunderstorms. Highs around 90. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 104.
Tonight 22 Jul Mercer
Mostly clear. Lows in the lower 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Heat index Values up to 102 early in the evening.
Princeton Temperature Statistics
July Temperature
Lamoni, Lamoni Municipal Airport (23 miles)
Lowest 1 July, 2025
61.6 °FAverage July
76.1 °FHighest 3 July, 2025
89.7 °F
Climate (2020–Present)
Lamoni, Lamoni Municipal Airport (23 miles)
Average Low 2020–2025
43.2 °FAverage 2020–2025
53 °FAverage High 2020–2025
63.1 °F