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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Hazardous Weather Conditions

Current conditions at

The Florida Keys - Marathon International Airport (KMTH)

Lat: 24.73°NLon: 81.05°WElev: 13ft.

Mostly Cloudy

84°F

29°C

Humidity 82%
Wind Speed Vrbl 3 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 12 Oct 5:53 am EDT
Extended Forecast for

4 Miles NNW Big Pine Key FL

  • Columbus Day

    Columbus Day: A slight chance of showers and thunderstorms. Sunny, with a high near 89. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 80 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers. Sunny, with a high near 88. Northeast wind around 10 mph. Chance of precipitation is 20%.

    High: 88 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly clear, with a low around 78. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Sunny, with a high near 88. Northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 30%.

    Low: 80 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 79. Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Columbus Day
A slight chance of showers and thunderstorms. Sunny, with a high near 89. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.
Tonight
A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers. Sunny, with a high near 88. Northeast wind around 10 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers. Mostly clear, with a low around 78. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 88. Northeast wind around 10 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 80. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 79. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Friday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 77. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 87. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 76. Chance of precipitation is 70%.
Sunday
Showers and possibly a thunderstorm. High near 87. Windy. Chance of precipitation is 80%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Big Pine Key FL
 24.72°N 81.37°W (Elev. 0 ft)
Last Update:
6:15 am EDT Oct 12, 2026
Forecast Valid:
6am EDT Oct 12, 2026-6pm EDT Oct 18, 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