Merrimac Weather Forecast
- 45
- 80
Thunderstorms
- 46
- 61
Partly Sunny
- 40
- 63
Mostly Cloudy
- 39
- 62
Mostly Sunny
- 52
- 70
Partly Sunny
- 47
- 72
Chance Rain Showers
Today 18 Apr Monroe
Mostly sunny this Morning, then Showers with Thunderstorms likely this afternoon. Locally heavy rainfall possible this afternoon. Highs around 80. Southeast Winds 10 to 15 Mph, becoming south this afternoon. Gusts up to 30 Mph. Chance of rain near 100 percent.
Tonight 18 Apr Monroe
Showers with Thunderstorms likely in the Evening, then partly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Cooler with Lows in the mid 40s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.
Merrimac Temperature Statistics
April Temperature
St. Louis Downtown Airport (16.2 miles)
Lowest 6 April, 2024
31.7 °FAverage April
59.9 °FHighest 14 April, 2024
88 °F
Climate (2019–Present)
St. Louis Downtown Airport (16.2 miles)
Average Low 2019–2024
47.1 °FAverage 2019–2024
57.2 °FAverage High 2019–2024
67.5 °F