Sumner Weather Forecast
- 46
- 59
Partly Sunny
- 47
- 76
Mostly Sunny
- 58
- 78
Mostly Sunny
- 49
- 74
Rain Showers
- 41
- 62
Partly Sunny
- 40
- 59
Partly Sunny
- 41
- 58
Mostly Cloudy
Today 20 Apr Bremer
Sunny. Highs around 60. South Winds 15 to 20 Mph.
Tonight 20 Apr Bremer
Partly cloudy. Not as cool with Lows in the upper 40s. South Winds 15 to 20 Mph.
Sumner Temperature Statistics
April Temperature
Oelwein Municipal Airport (12.4 miles)
Lowest 7 April, 2026
23 °FAverage April
47.6 °FHighest 17 April, 2026
80.6 °F
Climate (2021–Present)
Oelwein Municipal Airport (12.4 miles)
Average Low 2021–2026
38.6 °FAverage 2021–2026
48.4 °FAverage High 2021–2026
58.2 °F