Ontario Weather Forecast
- 38
- 61
Increasing Clouds
- 50
- 64
Mostly Cloudy
- 49
- 76
Rain Showers
- 35
- 61
Slight Chance Rain Showers
- 42
- 64
Partly Sunny
- 42
- 64
Chance Rain Showers
Today 26 Apr Vernon
Clear. Highs in the lower 60s. Northeast Winds around 5 Mph.
Tonight 26 Apr Vernon
Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 30s. Light Winds.
Ontario Temperature Statistics
April Temperature
Sparta, Sparta / Fort McCoy Airport (17.4 miles)
Lowest 8 April, 2025
9.5 °FAverage April
43.4 °FHighest 23 April, 2025
75.4 °F
Climate (2020–Present)
Sparta, Sparta / Fort McCoy Airport (17.4 miles)
Average Low 2020–2025
34.2 °FAverage 2020–2025
47.1 °FAverage High 2020–2025
57.8 °F