Gregg Lake Weather Forecast
- 60
- 82
Mostly Sunny
- 73
- 88
Mostly Sunny
- 70
- 94
Rain Showers Likely
- 67
- 86
Chance Thunderstorms
- 67
- 85
Chance Thunderstorms
- 67
- 90
Mostly Sunny
Today 22 Jul Eaton
Sunny. Highs in the lower 80s. Light Winds.
Tonight 22 Jul Eaton
Mostly clear. Lows in the upper 50s. South Winds around 10 Mph.
Gregg Lake Temperature Statistics
July Temperature
Ionia County Airport (13.7 miles)
Lowest 18 July, 2025
51.8 °FAverage July
73.4 °FHighest 5 July, 2025
91.4 °F
Climate (2020–Present)
Ionia County Airport (13.7 miles)
Average Low 2020–2025
40.9 °FAverage 2020–2025
50 °FAverage High 2020–2025
58.9 °F