July 24, 2019 – Hot temperatures are expected across interior NorCal through the weekend. Hottest temperatures expected Saturday & Sunday with Valley temperatures 100-110 degrees.

Overnight temperatures Saturday night will only cool to 67-77 degrees, which will not provide much relief from the heat.

An Excessive Heat Watch is in effect for Saturday & Sunday.

Monsoon moisture could make its way into NorCal today and tomorrow, creating a very slight chance of thunderstorms over the higher elevations of the Central Sierra. However, most storms are expected to remain south and east of our forecast area.


Outdoor workers, elderly, and young people may be affected by hot temperatures through the weekend

Lightning in the mountains

Cold and swift moving waterways

Forecast Confidence

High on temperature forecast

Low on thunderstorms


Extended period of hot temperatures this week, hottest Saturday & Sunday

Wed-Fri: Valley temperatures 97-105 degrees

Sat-Sun: Valley high temperatures 100-110 degrees, overnight lows 67-77 degrees


Isolated afternoon thunderstorms possible in the higher mountains of eastern Tuolumne County today & tomorrow.