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Canadian high-pressure system bringing chilly temps as snow chances dwindle

Interstate 90 is snowy and slick around Gillette on Feb. 16, 2024. (Wyoming Department of Transportation)

GILLETTE, Wyo. — With Canadian high pressure sliding into the region today, temperatures will struggle to get into the mid-teens.

The National Weather Service in Rapid City, South Dakota, says that system is bringing a cold airmass that will keep today’s high to around 16 degrees. This morning will kick off with a 30% chance for snow that will end around 10 a.m. Skies will remain mostly cloudy today. Windchills will be as low as minus 5 as winds come from the north at 10 mph.

Tonight will continue to be mostly cloudy, but skies should clear as Saturday’s dawn approaches. The low will be around 3 degrees while windchills will be a bone-chilling minus 9. Gusts from the northwest could reach 15 mph, according to the forecast.

However, warmer temps are on the horizon, beginning Saturday. High pressure will build over the Rockies, sending warmer air Gillette’s way. Skies will be sunny, and the high will be near 34. Windchills will still be near minus 8 with a southwest wind at 10–15 mph. Gusts could reach 20 mph.

Saturday night’s skies will be mostly clear as the low falls to around 16. Expect windchills to be near 6 degrees as winds come from the southwest at 10–15 mph.

Sunday will be warmer at 43 under mostly sunny skies. The low will fall to around 26.

Monday, Tuesday, and Wednesday will see the high climb to 48, 54 and 51, respectively, if the forecast holds up. Overnight lows each night will be in the high 20s to low 30s.

More on the weather is available from the National Weather Service in Rapid City.