Irwin Weather Forecast
- 59
- 84
Increasing Clouds
- 58
- 85
Partly Sunny
- 58
- 88
Mostly Sunny
- 57
- 88
Mostly Sunny
- 59
- 87
Partly Sunny
- 59
- 88
Partly Sunny
Today 13 Sep Union
Mostly sunny in the Morning, then becoming partly cloudy. Highs in the mid 80s. Light and variable Winds, becoming west around 5 Mph in the afternoon.
Tonight 13 Sep Union
Partly cloudy with a 20 percent chance of Showers. Lows in the upper 50s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.
Irwin Temperature Statistics
September Temperature
Marysville Union County Airport (9.9 miles)
Lowest 9 September, 2025
37.4 °FAverage September
59 °FHighest 3 September, 2025
80.6 °F
Climate (2020–Present)
Marysville Union County Airport (9.9 miles)
Average Low 2020–2025
42.8 °FAverage 2020–2025
52.3 °FAverage High 2020–2025
62 °F