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Heavy Rainfall Across South Texas; Heat in the West

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley through Thursday. Hot temperatures will persist over central and northern California and the Pacific Northwest through today. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Fair with Haze

53°F

12°C

Humidity 54%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Last update 16 Jun 6:55 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Mostly sunny, with a high near 91. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 16 mph.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. West wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Breezy, with a southwest wind 6 to 15 mph becoming north northwest in the morning. Winds could gust as high as 24 mph.

    High: 97 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. Breezy, with a northwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 55 °F

    Mostly Clear
    and Breezy
    then Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. Breezy.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 91. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 16 mph.
Tonight
Mostly clear, with a low around 61. West wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday
Sunny and hot, with a high near 97. Breezy, with a southwest wind 6 to 15 mph becoming north northwest in the morning. Winds could gust as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 55. Breezy, with a northwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Thursday
Sunny, with a high near 87. Light and variable wind becoming east 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 55.
Juneteenth
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 59.
Saturday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95. Breezy.
Saturday Night
Mostly clear, with a low around 58. Breezy.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
12:46 am MDT Jun 16, 2026
Forecast Valid:
7am MDT Jun 16, 2026-6pm MDT Jun 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation