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Tropical Storm Isaias to Impact the Eastern U.S. Early This Week

Tropical Storm Isaias will deliver heavy rainfall, flash and urban flooding, high winds, dangerous storm surge, coastal flooding, life-threatening surf, rip currents, and severe thunderstorms with tornadoes to portions of the Eastern U.S. through early this week. Isaias is expected to track from just offshore of northeastern Florida toward coastal South and North Carolina on Monday. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

21°C

70°F

Humidity 87%
Wind Speed N 7 km/h
Barometer 1014.8 mb (30.00 in)
Dewpoint 19°C (66°F)
Visibility 16 km
Last update 3 Aug 7:51 am CDT
Extended Forecast for

Lambert-St. Louis International Airport MO

  • Today

    Today: Isolated showers, then scattered showers and thunderstorms after 9am. Mostly cloudy, with a high near 25. North wind 10 to 16 km/h. Chance of precipitation is 30%.

    Scattered
    T-storms

    High: 25 °C

  • Tonight

    Tonight: Isolated showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 16. North wind 10 to 14 km/h. Chance of precipitation is 20%.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 16 °C

  • Tuesday

    Tuesday: Partly sunny, with a high near 25. North wind 11 to 13 km/h.

    Partly Sunny

    High: 25 °C

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 15. North wind 6 to 11 km/h becoming light northeast in the evening.

    Mostly Clear

    Low: 15 °C

  • Wednesday

    Wednesday: Mostly sunny, with a high near 26. Calm wind.

    Mostly Sunny

    High: 26 °C

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 16.

    Partly Cloudy

    Low: 16 °C

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    Mostly Sunny

    High: 28 °C

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 19.

    Mostly Clear
    then Slight
    Chance
    T-storms

    Low: 19 °C

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 8am and 2pm. Partly sunny, with a high near 28.

    Chance
    T-storms

    High: 28 °C

Detailed Forecast

Today
Isolated showers, then scattered showers and thunderstorms after 9am. Mostly cloudy, with a high near 25. North wind 10 to 16 km/h. Chance of precipitation is 30%.
Tonight
Isolated showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 16. North wind 10 to 14 km/h. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 25. North wind 11 to 13 km/h.
Tuesday Night
Mostly clear, with a low around 15. North wind 6 to 11 km/h becoming light northeast in the evening.
Wednesday
Mostly sunny, with a high near 26. Calm wind.
Wednesday Night
Partly cloudy, with a low around 16.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
A 20 percent chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 19.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 8am and 2pm. Partly sunny, with a high near 28.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 21.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 31.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 22.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 32.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lambert-St. Louis International Airport MO
 38.76°N 90.37°W (Elev. 168 m)
Last Update:
7:12 am CDT Aug 3, 2020
Forecast Valid:
8am CDT Aug 3, 2020-6pm CDT Aug 9, 2020
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation