Plain City Weather Forecast
- 56
- 87
Mostly Sunny
- 58
- 89
Mostly Sunny
- 59
- 87
Partly Sunny
- 61
- 87
Chance Rain Showers
- 61
- 82
Chance Rain Showers
- 60
- 81
Chance Rain Showers
- 58
- 78
Slight Chance Rain Showers
Today 18 Sep Madison
Sunny. Highs in the upper 80s. North Winds around 5 Mph.
Tonight 18 Sep Madison
Clear. Lows in the upper 50s. North Winds around 5 Mph early this Evening, becoming light and variable.
Plain City Temperature Statistics
September Temperature
Marysville Union County Airport (8.7 miles)
Lowest 9 September, 2025
37.4 °FAverage September
61.2 °FHighest 15 September, 2025
86 °F
Climate (2020–Present)
Marysville Union County Airport (8.7 miles)
Average Low 2020–2025
42.8 °FAverage 2020–2025
52.3 °FAverage High 2020–2025
62 °F