Union Weather Forecast
- 49
- 69
Chance Rain Showers
- 52
- 62
Chance Rain Showers
- 56
- 70
Mostly Cloudy
- 59
- 80
Chance Rain Showers
- 51
- 76
Chance Rain Showers
- 44
- 71
Chance Rain Showers
Today 13 Oct Hardin
Mostly sunny. Highs in the upper 60s. North Winds 10 to 15 Mph.
Tonight 13 Oct Hardin
Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 40s. Northeast Winds 5 to 10 Mph.
Union Temperature Statistics
October Temperature
Marshalltown, Marshalltown Municipal Airport (11.8 miles)
Lowest 9 October, 2025
39 °FAverage October
63.2 °FHighest 3 October, 2025
87.1 °F
Climate (2020–Present)
Marshalltown, Marshalltown Municipal Airport (11.8 miles)
Average Low 2020–2025
39.6 °FAverage 2020–2025
50.2 °FAverage High 2020–2025
60.9 °F