Denmark Weather Forecast
- 69
- 93
Increasing Clouds
- 66
- 87
Partly Sunny
- 67
- 86
Partly Sunny
- 74
- 94
Partly Sunny
- 68
- 93
Chance Rain Showers
- 64
- 85
Slight Chance Rain Showers
Today 5 Sep Lee
Sunny, hot with Highs in the mid 90s. West Winds around 5 Mph, becoming north around 5 Mph in the afternoon. Heat index Values up to 105.
Tonight 5 Sep Lee
Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows around 70. Northeast Winds around 5 Mph. Heat index Values up to 102 early in the evening.
Denmark Temperature Statistics
September Temperature
Fort Madison Municipal Airport (5 miles)
Lowest 1 September, 2026
75.2 °FAverage September
84.2 °FHighest 1 September, 2026
96.8 °F
Climate (2021–2026)
Fort Madison Municipal Airport (5 miles)
Average Low 2021–2026
45.4 °FAverage 2021–2026
55 °FAverage High 2021–2026
64.7 °F