National Weather Service United States Department of Commerce

Heavy rain forecast for parts of the Southwest

The combination of a slow-moving front and monsoon moisture will bring thunderstorms to parts of the Southwest, some with heavy rain that could lead to isolated flash flooding. Areas at risk include southern Arizona, New Mexico and western Texas.
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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

Partly Cloudy

Partly
Cloudy

Low: 54 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 10%

Slight Chc
Thunderstorms

High: 80 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 55 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 10%

Slight Chc
Thunderstorms

High: 83 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 56 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 84 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 59 °F

Monday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 83 °F

Monday
Night

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

Low: 59 °F

Detailed Forecast

  • Tonight Partly cloudy, with a low around 54. West northwest wind 3 to 5 mph.
  • Friday A 10 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Calm wind becoming southeast 5 to 7 mph in the afternoon.
  • Friday Night A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55. Southeast wind 5 to 7 mph becoming light and variable after midnight.
  • Saturday A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. Calm wind becoming east southeast around 5 mph in the afternoon.
  • Saturday Night Partly cloudy, with a low around 56. East southeast wind around 6 mph becoming west after midnight.
  • Sunday Mostly sunny, with a high near 84.
  • Sunday Night Partly cloudy, with a low around 59.
  • 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 59.
  • Tuesday A chance of showers and thunderstorms. Partly sunny, with a high near 82.
  • Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
  • Wednesday A chance of showers and thunderstorms. Partly sunny, with a high near 77.
  • Wednesday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
  • Thursday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79.