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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Mostly Cloudy

56°F

13°C

Humidity 45%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 18 Jun 2:35 am MDT
Extended Forecast for

Lyons CO

  • Overnight

    Overnight: Mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the morning.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58. Light and variable wind becoming west northwest 5 to 8 mph in the evening.

    Low: 58 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 83. West southwest wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. East wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60. Breezy.

    Low: 60 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 51. Calm wind.
Thursday
Sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 58. Light and variable wind becoming west northwest 5 to 8 mph in the evening.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 83. West southwest wind 5 to 9 mph becoming east in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 61. East wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 60. Breezy.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Monday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 57.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lyons CO
 40.22°N 105.3°W (Elev. 6316 ft)
Last Update:
12:46 am MDT Jun 18, 2026
Forecast Valid:
2am MDT Jun 18, 2026-6pm MDT Jun 24, 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