National Weather Service United States Department of Commerce

Severe storms and heavy rain possible from parts of Plains to Great Lakes on Labor Day

Isolated severe thunderstorms are forecast to develop on Labor Day along and ahead of a cold front from parts of the southern Great Lakes southwestward across Illinois and Missouri into southeast Kansas. Damaging winds, large hail and heavy rainfall will be possible with these storms.
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Hazardous Weather Conditions

Current Conditions

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Longmont CO

7 Day Forecast

For More Weather Information:

Denver-Boulder, CO Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 46 °F

Labor
Day

Sunny

Sunny

High: 78 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 49 °F

Tuesday

Sunny

Sunny

High: 86 °F

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 54 °F

Wednesday

Sunny

Sunny

High: 90 °F

Wednesday
Night

Mostly Clear

Mostly
Clear

Low: 53 °F

Thursday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 81 °F

Thursday
Night

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

Low: 52 °F

Detailed Forecast

  • Overnight Mostly clear, with a low around 46. South southwest wind 3 to 5 mph.
  • Labor Day Sunny, with a high near 78. Light and variable wind becoming north 5 to 7 mph in the afternoon.
  • Monday Night Partly cloudy, with a low around 49. North northwest wind 6 to 10 mph, with gusts as high as 16 mph.
  • Tuesday Sunny, with a high near 86. West northwest wind around 6 mph becoming light and variable.
  • Tuesday Night Mostly clear, with a low around 54. East southeast wind 5 to 8 mph becoming west in the evening.
  • Wednesday Sunny, with a high near 90.
  • Wednesday Night Mostly clear, with a low around 53.
  • Thursday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
  • Thursday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 52.
  • Friday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.
  • Friday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
  • Saturday A slight chance of showers and thunderstorms. Partly sunny, with a high near 80.
  • Saturday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
  • Sunday A slight chance of showers and thunderstorms. Partly sunny, with a high near 82.