News Headlines
Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Fair
82°F
28°C
| Humidity | 44% |
| Wind Speed | SW 3 mph |
| Barometer | 29.99 in (1015.1 mb) |
| Dewpoint | 58°F (14°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 19 Jun 5:54 pm CDT |
Extended Forecast for
Byrnes Mill MO
Tonight

Low: 63 °F
Mostly Cloudy
Saturday
High: 85 °F
Slight Chance
Showers then
Partly SunnySaturday Night
Low: 66 °F
Partly Cloudy
then Chance
ShowersSunday

High: 82 °F
T-storms
Sunday Night

Low: 65 °F
T-storms
Monday

High: 78 °F
Slight Chance
T-stormsMonday Night

Low: 60 °F
Partly Cloudy
Tuesday

High: 80 °F
Mostly Sunny
Tuesday Night

Low: 61 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
A 20 percent chance of showers before 10am. Partly sunny, with a high near 85. Calm wind.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms, mainly after 7am. High near 82. Southeast wind 5 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Low around 65. Southwest wind around 7 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Byrnes Mill MO
38.43°N 90.55°W (Elev. 597 ft)
38.43°N 90.55°W (Elev. 597 ft)
6:01 pm CDT Jun 19, 2026
6pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026


