Byrnes Mill Weather Forecast
- 45
- 52
Rain
- 34
- 51
Chance Rain
- 41
- 53
Partly Sunny
- 42
- 66
Mostly Cloudy
- 32
- 57
Mostly Cloudy
- 35
- 49
Chance Rain
Today 30 Jan Jefferson
A slight chance of Thunderstorms. Rain. Patchy fog. Highs around 50. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.
Tonight 30 Jan Jefferson
Mostly cloudy with a 20 percent chance of rain. Lows in the upper 20s. Southeast Winds around 5 Mph.
Byrnes Mill Temperature Statistics
January Temperature
St. Louis, Spirit Of St. Louis Airport (15.5 miles)
Lowest 21 January, 2025
-0.1 °FAverage January
25.1 °FHighest 17 January, 2025
57.7 °F
Climate (2020–Present)
St. Louis, Spirit Of St. Louis Airport (15.5 miles)
Take a look at our website widgetsAvailable free! Find Out MoreAverage Low 2020–2025
45.9 °FAverage 2020–2025
56.7 °FAverage High 2020–2025
67.9 °F