Irwin Weather Forecast
- 58
- 87
Mostly Sunny
- 58
- 89
Mostly Sunny
- 59
- 86
Partly Sunny
- 62
- 87
Chance Rain Showers
- 61
- 82
Chance Rain Showers
- 57
- 82
Chance Rain Showers
Today 18 Sep Union
Sunny. Highs in the upper 80s. Light and variable Winds, becoming north around 5 Mph this afternoon.
Tonight 18 Sep Union
Clear. Lows in the upper 50s. Northeast 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
61.2 °FHighest 15 September, 2025
86 °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