National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

71°F

22°C

Humidity 76%
Wind Speed W 9 mph
Barometer 29.69 in (1004.4 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 1 Aug 3:51 am CDT
Extended Forecast for

2 Miles SW Saint Ann MO

  • Today

    Today: Showers likely, mainly after 4pm. Patchy fog before 3pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 74. West wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 74 °F

    Isolated
    Showers then
    Showers
    Likely and
    Patchy Fog

  • Tonight

    Tonight: Showers likely, mainly before 9pm. Patchy fog before 9pm. Otherwise, cloudy, with a low around 68. North wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely and
    Patchy Fog
    then
    Scattered
    Showers

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 80. North wind around 14 mph, with gusts as high as 23 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. North wind 5 to 10 mph becoming light after midnight.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. North wind 3 to 7 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Today
Showers likely, mainly after 4pm. Patchy fog before 3pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 74. West wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Tonight
Showers likely, mainly before 9pm. Patchy fog before 9pm. Otherwise, cloudy, with a low around 68. North wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 80. North wind around 14 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 67. North wind 5 to 10 mph becoming light after midnight.
Monday
Sunny, with a high near 84. North wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 88.
Wednesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Saint Ann MO
 38.69°N 90.4°W (Elev. 636 ft)
Last Update:
4:26 am CDT Aug 1, 2026
Forecast Valid:
4am CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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