National Weather Service United States Department of Commerce

Severe weather possible from Upper Midwest across Ohio Valley and into central Appalachians, as well as for parts of Mid-Atlantic and Desert Southwest

Scattered severe thunderstorms are expected to develop Thursday afternoon and evening over parts of the Upper Midwest and Ohio Valley and into the central Appalachians, as well as across parts of the Mid-Atlantic and the Desert Southwest. Damaging wind and large hail will be the main threats for all three areas.
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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

Tonight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 58 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 82 °F

Friday
Night

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

Low: 54 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 85 °F

Saturday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 53 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 80 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 10%

Slight Chc
Thunderstorms

Low: 53 °F

Monday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 83 °F

Monday
Night

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

Low: 55 °F

Detailed Forecast

  • Tonight A slight chance of showers and thunderstorms between 7pm and 2am. Mostly cloudy, with a low around 58. South wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 20%.
  • Friday A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming southeast around 6 mph in the afternoon.
  • Friday Night A 50 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 54. South southwest wind 5 to 7 mph becoming calm.
  • Saturday A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. West northwest wind 5 to 7 mph becoming southeast in the afternoon.
  • Saturday Night A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 53. East wind around 7 mph becoming west after midnight.
  • Sunday Mostly sunny, with a high near 80.
  • Sunday Night A slight chance of showers and thunderstorms between 7pm and 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 10%.
  • Monday A slight chance of showers and thunderstorms. Partly sunny, with a high near 83.
  • Monday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
  • Tuesday A chance of showers and thunderstorms. Partly sunny, with a high near 79.
  • Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
  • Wednesday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
  • Wednesday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.
  • Thursday Mostly sunny, with a high near 82.