Alto Pass Weather Forecast
- 40
- 65
Mostly Sunny
- 43
- 64
Increasing Clouds
- 57
- 71
Chance Rain Showers
- 58
- 76
Rain Showers Likely
- 61
- 69
Rain Showers Likely
- 44
- 75
Rain Showers Likely
- 38
- 56
Slight Chance Rain Showers
Today 25 Mar Union
Sunny. Near steady temperature in the mid 60s. Northwest Winds 5 to 10 Mph.
Tonight 25 Mar Union
Mostly clear. Lows in the lower 40s. North Winds around 5 Mph this Evening, becoming light and variable.
Alto Pass Temperature Statistics
March Temperature
Southern Illinois Airport (14.9 miles)
Lowest 2 March, 2025
23.8 °FAverage March
51.2 °FHighest 14 March, 2025
80.7 °F
Climate (2020–Present)
Southern Illinois Airport (14.9 miles)
Average Low 2020–2025
47.6 °FAverage 2020–2025
57.8 °FAverage High 2020–2025
68.5 °F