Merrill Weather Forecast
- 67
- 94
Mostly Cloudy
- 63
- 87
Chance Rain Showers
- 64
- 87
Mostly Sunny
- 61
- 88
Rain Showers Likely
- 57
- 77
Chance Thunderstorms
- 55
- 75
Chance Rain Showers
- 53
- 75
Partly Sunny
Today 13 Sep Plymouth
Mostly sunny. Highs in the lower 90s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.
Tonight 13 Sep Plymouth
Mostly cloudy this Evening, then becoming partly cloudy. Lows in the upper 60s. South Winds 5 to 10 Mph.
Merrill Temperature Statistics
September Temperature
Le Mars Municipal Airport (4.3 miles)
Lowest 11 September, 2025
60.8 °FAverage September
73.3 °FHighest 11 September, 2025
84.2 °F
Climate (2020–Present)
Le Mars Municipal Airport (4.3 miles)
Average Low 2020–2025
37.3 °FAverage 2020–2025
48.4 °FAverage High 2020–2025
59.5 °F