PHOENIX -- An upswing in the monsoon is going to greatly increase the number of thunderstorms around the state. And the chance for storms in the Valley for the weekend is increasing.
Right now, it looks like the best chance for storms is Saturday night into Sunday. We’re putting the chance for storms Saturday night and Sunday for metro Phoenix at 40 percent. It’s not a lock yet; rain isn’t guaranteed. But conditions are looking much better as additional moisture streams into Arizona.
The increase in moisture and clouds will also lower temperatures. For the weekend, it’s possible on both Saturday and Sunday highs will only be in the 90s. That would be nice.
A low-grade monsoon evening is anticipated tonight with just a slight chance for thunderstorms forecast over the lower central deserts and metro Phoenix. Expect an uptrend in thunderstorm chances expanding from east to west Friday through the weekend.
Next week a downtrend in thunderstorm chances and steadily warming high temperatures is anticipated as drier air filters in from the west.
So far, the monsoon hasn’t been all that much. We have had isolated heavy rain, but at Sky Harbor Airport, we’ve only received .06 inch of rain so far in Monsoon 2014.