Flooding Threat Continues in Portions of Texas; Poor Air Quality in the Great Lakes through the Mid-Atlantic

Widespread life-threatening flash and urban flooding continues in south-central Texas, with considerable flooding impacts possible across central Texas. Wildfire smoke is impacting air quality across much of the Great Lakes region into southern New England and the Mid-Atlantic. Monsoonal thunderstorms may produce isolated to scattered flash flooding across the Southwest into the Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

Lat: 40.16°NLon: 105.16°WElev: 5039ft.

Fair

77°F

25°C

Humidity 42%
Wind Speed N 8 mph
Barometer 30.18 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Jul 9:35 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Sunny, with a high near 94. North northeast wind 6 to 9 mph becoming east southeast in the morning. Winds could gust as high as 15 mph.

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. East wind 5 to 9 mph becoming light and variable. Winds could gust as high as 15 mph.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. Light and variable wind becoming east southeast 5 to 7 mph in the morning.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. East southeast wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 15 mph.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers.  Mostly cloudy, with a low around 64.

    Low: 64 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 94. North northeast wind 6 to 9 mph becoming east southeast in the morning. Winds could gust as high as 15 mph.
Tonight
Mostly clear, with a low around 64. East wind 5 to 9 mph becoming light and variable. Winds could gust as high as 15 mph.
Saturday
Sunny, with a high near 96. Light and variable wind becoming east southeast 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 64. East southeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Sunday
Sunny and hot, with a high near 99. Calm wind becoming east southeast around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 97.
Monday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 64.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 91.
Tuesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 61.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 89.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62.
Thursday
Showers and possibly a thunderstorm. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
12:46 am MDT Jul 17, 2026
9am MDT Jul 17, 2026-6pm MDT Jul 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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