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

Marianna Municipal Airport (KMAI)

Lat: 30.84°NLon: 85.18°WElev: 105ft.

Fair

78°F

26°C

Humidity 90%
Wind Speed Calm
Barometer 29.96 in (1014.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Aug 6:53 am CDT
Extended Forecast for

Altha FL

  • Today

    Today: Showers and thunderstorms likely, mainly between 2pm and 5pm. Increasing clouds, with a high near 90. Heat index values as high as 103. Light south wind becoming south southwest 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Slight Chance
    Showers then
    T-storms
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 73. West southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 87 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 72. North wind around 5 mph becoming calm.

    Low: 72 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 88. Calm wind becoming south around 5 mph. Chance of precipitation is 60%.

    High: 88 °F

    Chance
    Showers then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 2pm and 5pm. Increasing clouds, with a high near 90. Heat index values as high as 103. Light south wind becoming south southwest 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 73. West southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 72. North wind around 5 mph becoming calm.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 88. Calm wind becoming south around 5 mph. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Monday
Showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Altha FL
 30.58°N 85.12°W (Elev. 233 ft)
Last Update:
6:15 am CDT Aug 27, 2026
Forecast Valid:
7am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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