Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Partly Cloudy

88°F

31°C

Humidity	43%
Wind Speed	Calm
Barometer	30.12 in
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	24 Jul 4:55 pm MDT

More Information:

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

Extended Forecast for

Longmont CO

Heat Advisory July 25, 11:00am until July 25, 09:00pm

Heat Advisory July 26, 11:00am until July 26, 09:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 65 °F
Chance
T-storms then
Mostly Clear
Saturday
High: 99 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 65 °F
Slight Chance
T-storms then
Partly Cloudy
Sunday
High: 99 °F
Mostly Sunny
then Chance
T-storms
Sunday Night
Low: 67 °F
Slight Chance
T-storms then
Mostly Cloudy
Monday
High: 93 °F
Partly Sunny
then Showers
Likely
Monday Night
Low: 65 °F
Showers
Likely then
Slight Chance
Showers
Tuesday
High: 93 °F
Partly Sunny
then T-storms
Likely
Tuesday Night
Low: 63 °F
Showers
Likely

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 65. Light and variable wind.

Saturday

A 30 percent chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 99. Calm wind becoming south around 6 mph in the afternoon.

Saturday Night

A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 65. South southwest wind around 6 mph becoming light and variable. Winds could gust as high as 16 mph.

Sunday

A 30 percent chance of showers and thunderstorms after noon. Mostly cloudy through mid morning, then becoming sunny and hot, with a high near 99. West wind around 5 mph becoming calm.

Sunday Night

A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 67. West wind around 6 mph. Chance of precipitation is 20%.

Monday

Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 93. Chance of precipitation is 60%.

Monday Night

Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Tuesday

Showers and thunderstorms likely after noon. Mostly cloudy, with a high near 93.

Tuesday Night

Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 63.

Wednesday

Showers and thunderstorms likely after noon. Partly sunny, with a high near 93.

Wednesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.

Thursday

A chance of showers and thunderstorms. Mostly sunny, with a high near 93.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 63.