Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Overcast
78°F
26°C
| Humidity | 60% |
| Wind Speed | SW 14 G 24 mph |
| Barometer | 29.99 in (1014.8 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 13 Apr 10:54 am CDT |
Extended Forecast for
Byrnes Mill MO
Today

High: 85 °F
Mostly Sunny
Tonight

Low: 68 °F
Partly Cloudy
Tuesday
High: 88 °F
Mostly Sunny
then Chance
T-stormsTuesday Night
Low: 69 °F
Chance
T-storms then
Chance
ShowersWednesday

High: 83 °F
Showers
LikelyWednesday Night

Low: 62 °F
Showers
LikelyThursday

High: 84 °F
Chance
T-stormsThursday Night

Low: 62 °F
Mostly Clear
Friday
High: 88 °F
Partly Sunny
then Slight
Chance
T-storms
Detailed Forecast
Today
Mostly sunny, with a high near 85. South wind 10 to 13 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 68. Southwest wind 9 to 11 mph, with gusts as high as 28 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Southwest wind 9 to 14 mph, with gusts as high as 26 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday
Showers likely, with thunderstorms also possible after 7am. Mostly cloudy, with a high near 83. Southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly between 10am and 1pm. Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 62.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 42.
Sunday
Sunny, with a high near 66.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Byrnes Mill MO
38.43°N 90.58°W (Elev. 495 ft)
38.43°N 90.58°W (Elev. 495 ft)
8:56 am CDT Apr 13, 2026
11am CDT Apr 13, 2026-6pm CDT Apr 19, 2026


