A very stable and quiet weather pattern will deliver a hot and dry Memorial Day weekend with temperatures 10 to 15 degrees above normal, before gusty winds and elevated fire weather conditions arrive Monday ahead of a cold front that will bring a significant cooldown Tuesday.
Scott Dorval's video forecast highlights a hot weekend ending with wind
Clear skies and light winds will allow for efficient radiational cooling overnight, though morning lows will remain above normal. A steady warming trend will continue Saturday into Sunday as the weather pattern transitions. Temperatures will push to around 5 to 10 degrees above seasonal normals by Sunday, with Memorial Day shaping up to be the hottest day of the period at 92 degrees.
A slight chance of showers and thunderstorms will exist along the Nevada-Idaho border Saturday afternoon as mid-level moisture increases, but most of the region will remain dry through the weekend. A strengthening surface pressure gradient ahead of an approaching Pacific low will lead to increasing westerly winds across the region Sunday afternoon, particularly through the Snake River Plain, with gusts reaching 20 to 30 mph by late afternoon.
The combination of gusty winds, very dry conditions, and warm temperatures will support elevated fire weather conditions Monday ahead of the cold front. Residents and outdoor enthusiasts should be aware of the increased fire danger and take precautions to avoid any potential ignition sources.
The cold front will bring a dramatic change to the weather pattern on Tuesday, dropping temperatures by more than 20 degrees and bringing gusty winds and a chance of showers and thunderstorms. Shower chances will linger into Wednesday and Thursday as the upper-level low keeps conditions unsettled before a gradual warming trend returns later in the week.
Tonight
Mostly clear, with a low around 52. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 56. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 89. Calm wind becoming west northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 60. Light and variable wind becoming east around 6 mph after midnight.
Memorial Day
Sunny and hot. Becoming very breezy late in the day, with a high near 92.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Mostly sunny & much cooler, with a high near 67.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 44.
Wednesday
A 30 percent chance of showers before noon. Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 50.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
