Breezy. Sunny in the morning...then partly cloudy with a 20 percent chance of showers and thunderstorms in the afternoon. Highs around 100. Southwest winds 15 to 25 mph late morning through afternoon.
Saturday Night
Breezy. A 50 percent chance of showers and thunderstorms. Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. South winds 15 to 25 mph.
Sunday
Windy. A chance of showers and thunderstorms in the morning...then showers and thunderstorms likely in the afternoon. Mostly cloudy. Cooler. Highs in the lower 80s. Southwest winds 20 to 30 mph. Chance of precipitation 60 percent.
Sunday Night
Breezy. Mostly cloudy with a 40 percent chance of showers and thunderstorms. Cooler. Lows in the mid 40s. South winds 15 to 25 mph.
Labor Day
A chance of showers and thunderstorms in the morning...then a chance of rain showers in the afternoon. Partly cloudy. Highs in the mid 70s. Northwest winds 10 to 20 mph. Chance of precipitation 30 percent.
Monday Night
Partly cloudy. Lows around 40.
Tuesday and Tuesday Night
Mostly clear. Highs in the mid 70s. Lows in the mid 40s.
Wednesday through Friday
Mostly clear. Highs in the mid 80s. Lows in the mid 40s.
... Becoming wet and unseasonably cool during the upcoming Holiday weekend...
A moist and unseasonably cool Pacific storm system will move into the Great Basin during the latter half of the upcoming Holiday weekend. Showers and thunderstorms will begin Saturday afternoon over southern Utah as monsoonal moisture spreads northward into the area. This moisture will continue north Saturday night... and encompass all of Utah and southwest Wyoming by early Sunday.
As this Pacific storm system approaches the area Sunday and interacts with this moisture... showers and thunderstorms are expected to become fairly widespread across the region. Some of these storms may become strong at times... and will be capable of producing heavy rainfall. The greatest moisture will be over southern Utah... where widespread rainfall totals of one to two inches are possible. This will result in an elevated risk of flash flooding over the Holiday weekend.
Much cooler air will filter into northern and central Utah... as well as southwest Wyoming on Labor Day... dropping snow levels as low as 8000 ft by early Monday evening. Some accumulating snow can be expected above this elevation across the higher terrain of northern Utah. As this system moves east of the region by Tuesday morning... clearing skies may allow temperatures to fall below freezing across some northern Utah valleys.
Those planning outdoor activities across northern Utah during the upcoming Labor Day weekend are strongly encouraged to monitor the weather... and be prepared for wet conditions beginning Sunday... as well as much cooler temperatures on Labor Day... particularly across the higher terrain.
Anyone planning outdoor activities across southern Utah... particularly locations prone to flash flooding such as slot canyons and Slick Rock areas... should be aware that the threat for flash flooding will be elevated throughout the Holiday weekend. Be prepared to take action should flash flooding develop.
For more information from NOAA/S National Weather Service visit...