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

Perryville Regional Airport (KPCD)

Lat: 37.87°NLon: 89.86°WElev: 372ft.

Fog/Mist

73°F

23°C

Humidity 99%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 2.00 mi
Last update 15 Jul 1:35 am CDT
Extended Forecast for

Saint Mary MO

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 60%.

    High: 87 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 73. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 101. Southwest wind 3 to 7 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South wind around 6 mph.

    Low: 75 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, cloudy, with a low around 71. Calm wind.
Tuesday
Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 73. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 101. Southwest wind 3 to 7 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South wind around 6 mph.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 91.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Mary MO
 37.88°N 89.95°W (Elev. 400 ft)
Last Update:
12:22 am CDT Jul 15, 2025
Forecast Valid:
1am CDT Jul 15, 2025-6pm CDT Jul 21, 2025
 
Forecast Discussion
 
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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