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

Air Quality Alert

Current conditions at

Vance Brand Airport (KLMO)

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

Fair

66°F

19°C

Humidity	28%
Wind Speed	NE 15 G 23 mph
Barometer	30.06 in
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	17 Jun 10:55 pm MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles ESE Longmont CO

Tonight
Low: 54 °F
Mostly Clear
and Breezy
Thursday
High: 89 °F
Sunny
Thursday Night
Low: 56 °F
Increasing
Clouds
Juneteenth
High: 90 °F
Gradual
Clearing
Friday Night
Low: 57 °F
Mostly Clear
Saturday
High: 96 °F
Mostly Sunny
then Mostly
Sunny and
Breezy
Saturday Night
Low: 57 °F
Mostly Clear
and Breezy
then Mostly
Clear
Sunday
High: 89 °F
Sunny then
Slight Chance
T-storms
Sunday Night
Low: 54 °F
Chance
T-storms and
Breezy then
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 54. Breezy, with a north northeast wind 10 to 15 mph becoming light east northeast after midnight. Winds could gust as high as 24 mph.

Thursday

Sunny, with a high near 89. Light east wind becoming east northeast 5 to 10 mph in the morning. Winds could gust as high as 16 mph.

Thursday Night

Increasing clouds, with a low around 56. East northeast wind 5 to 9 mph becoming west northwest after midnight. Winds could gust as high as 22 mph.

Juneteenth

Cloudy through mid morning, then gradual clearing, with a high near 90. North wind 8 to 11 mph becoming east in the afternoon. Winds could gust as high as 21 mph.

Friday Night

Mostly clear, with a low around 57. East wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 15 mph.

Saturday

Mostly sunny, with a high near 96. Breezy.

Saturday Night

Mostly clear, with a low around 57. Breezy.

Sunday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.

Sunday Night

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

Monday

A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85.