0CFE69074D054EC786164AC7D52B6357
Johnstown, CO 80534

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Change Units: °F  | °C

Detailed Forecast

Johnstown, CO 80534

Tonight

9/19/2014

Now

Scattered showers and thunderstorms will continue across portions of the Front Range foothills...urban corridor...and adjacent Plains late this evening. Through 930 PM...the most numerous storms will occur along and north of a line from Longmont to Denver international airport. The strongest storms in northern Weld County north of a line from Wellington to Briggsdale will produce a period of heavy rain...small hail...gusty outflow winds to around 40 mph...and frequent cloud to ground lightning. Up to a half inch of rain can be expected with those storms. Storms farther south around Longmont to near dia will also produce cloud to ground lightning but rainfall amounts mostly under a quarter inch.

Lo: 55°

Partly cloudy. Isolated thunderstorms in the evening. Lows in the mid 50s. Chance of thunderstorms 10 percent.

Saturday

9/20/2014

Hi: 75°

Partly cloudy. Highs in the mid 70s to lower 80s. North winds 10 to 15 mph in the morning becoming light.

Lo: 53°

Partly cloudy with a slight chance of thunderstorms in the evening...then mostly cloudy with a chance of thunderstorms after midnight. Lows 50 to 56. Chance of thunderstorms 30 percent.

Sunday

9/21/2014

Hi: 70°

Partly cloudy with a 40 percent chance of thunderstorms. Highs near 70. Southeast winds 10 to 15 mph.

Lo: 55°

Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the lower to mid 50s. Southeast winds 10 to 15 mph.

Monday

9/22/2014

Hi: 78°

Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the mid to upper 70s.

Lo: 50°

Mostly cloudy with a 40 percent chance of thunderstorms. Lows near 50.

Tuesday

9/23/2014

Hi: 78°

Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid to upper 70s.

Lo: 50°

Partly cloudy with a 10 percent chance of thunderstorms. Lows near 50.

Wednesday

9/24/2014

Hi: 80°

Partly cloudy. Highs near 80.

Lo: 49°

Mostly clear. Lows 47 to 52. Highs 76 to 82. =

Thursday

9/25/2014

Hi: 82°

Mostly clear. Lows 47 to 52. Highs 76 to 82. =

Lo: 49°

Mostly clear. Lows 47 to 52. Highs 76 to 82. =

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