17 hours 41 minutes ago
TUCSON - High temperatures are nearly 10 degrees above average today and will persist into Halloween, before sharply cooler air moves in. Tucson has hit 90 degrees today and lower 90s are also in the forecast for Halloween. The weather for trick-or-treaters will be mostly dry, but a spotty shower is possible, especially east of Tucson late Friday night. A major pattern change will begin by the weekend, as a cold air-mass moves out of the Gulf of Alaska and into the Western States. We are too far south to see the coldest air and any precipitation, but breezy conditions will filter in the coldest air we've seen since April. Highs on Saturday will top off into the mid 80s, followed by mid 70s on Sunday and even upper 60s by Monday. The coolest valleys could flirt with the season's first frost by Monday night.
11 hours ago