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

Excessive Rainfall Could Bring Flooding to the High Plains; Tropical Storm Arlene to Dissipate by Sunday

Excessive rainfall may bring flooding to portions of southern Florida, the northern Rockies, and northern High Plains today, and to the southern High Plains today into Monday. Tropical Storm Arlene, in the southeast Gulf of Mexico, is forecast to become a tropical depression today, degenerate into a remnant low by late tonight, and dissipate on Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Light Drizzle

60°F

16°C

Humidity 78%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 3 Jun 8:35 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Showers and possibly a thunderstorm. High near 65. Light north wind becoming north northeast 5 to 9 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 80%.

    Showers

    High: 65 °F

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 52. North northeast wind 5 to 8 mph becoming light and variable in the evening. Chance of precipitation is 70%.

    Showers
    Likely

    Low: 52 °F

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 9am. High near 67. Light and variable wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 90%.

    Showers
    Likely then
    T-storms

    High: 67 °F

  • Sunday
    Night

    Sunday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 53. East northeast wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 80%.

    T-storms then
    Chance
    T-storms

    Low: 53 °F

  • Monday

    Monday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 71. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Chance
    Showers then
    T-storms

    High: 71 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 51.

    Chance
    T-storms then
    Partly Cloudy

    Low: 51 °F

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.

    Mostly Sunny
    then Chance
    T-storms

    High: 75 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53.

    Chance
    T-storms then
    Partly Cloudy

    Low: 53 °F

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75.

    Mostly Sunny
    then Showers
    Likely

    High: 75 °F

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 65. Light north wind becoming north northeast 5 to 9 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 80%.
Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 52. North northeast wind 5 to 8 mph becoming light and variable in the evening. Chance of precipitation is 70%.
Sunday
Showers likely, then showers and possibly a thunderstorm after 9am. High near 67. Light and variable wind becoming northeast 5 to 9 mph in the morning. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Low around 53. East northeast wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 80%.
Monday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 71. Light and variable wind becoming southeast 9 to 14 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 51.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Tuesday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53.
Wednesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 54.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
3:40 am MDT Jun 3, 2023
Forecast Valid:
8am MDT Jun 3, 2023-6pm MDT Jun 9, 2023
 
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