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

Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Lamar Municipal Airport (KLAA)

Lat: 38.07°NLon: 102.69°WElev: 3684ft.

Fair

82°F

28°C

Humidity 56%
Wind Speed NE 9 mph
Barometer 30.01 in (1010.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 18 Aug 7:53 pm MDT
Extended Forecast for

3 Miles ENE Fort Lyon CO

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 2am and 3am. Mostly cloudy, with a low around 66. North northeast wind 10 to 15 mph. Chance of precipitation is 10%.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Northeast wind 5 to 10 mph becoming south in the morning.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 63. East southeast wind 5 to 10 mph becoming west southwest in the evening. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 96. South wind 5 to 10 mph.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Southeast wind 5 to 15 mph becoming south southwest after midnight.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98. South southwest wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 98 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 65. East southeast wind 5 to 10 mph.

    Low: 65 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. West southwest wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 66. Southeast wind 10 to 15 mph.

    Low: 66 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 2am and 3am. Mostly cloudy, with a low around 66. North northeast wind 10 to 15 mph. Chance of precipitation is 10%.
Wednesday
A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 91. Northeast wind 5 to 10 mph becoming south in the morning.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 63. East southeast wind 5 to 10 mph becoming west southwest in the evening. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny, with a high near 96. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 64. Southeast wind 5 to 15 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 98. South southwest wind 5 to 10 mph becoming east southeast in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 65. East southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 100. West southwest wind 5 to 10 mph becoming south southeast in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 66. Southeast wind 10 to 15 mph.
Sunday
Mostly sunny, with a high near 99. West wind around 10 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. North wind around 5 mph becoming west northwest after midnight.
Monday
Sunny, with a high near 96. West wind around 5 mph becoming east in the afternoon.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 64. East wind 5 to 10 mph becoming west northwest after midnight.
Tuesday
Sunny, with a high near 95. West wind around 5 mph becoming southeast in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Fort Lyon CO
 38.12°N 103.11°W (Elev. 3924 ft)
Last Update:
6:51 pm MDT Aug 18, 2026
Forecast Valid:
8pm MDT Aug 18, 2026-6pm MDT Aug 25, 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