Plain City Weather Forecast
- 56
- 86
Mostly Sunny
- 57
- 88
Mostly Sunny
- 54
- 85
Partly Sunny
- 56
- 85
Mostly Sunny
- 57
- 87
Mostly Sunny
- 57
- 87
Slight Chance Thunderstorms
- 56
- 82
Chance Rain Showers
Today 14 Sep Madison
Sunny. Near steady Temperatures in the mid 80s. East Winds around 5 Mph.
Tonight 14 Sep Madison
Clear. Lows in the upper 50s. Northeast Winds around 5 Mph.
Plain City Temperature Statistics
September Temperature
Marysville Union County Airport (8.7 miles)
Lowest 9 September, 2025
37.4 °FAverage September
59.5 °FHighest 3 September, 2025
80.6 °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