EXCESSIVE HEAT WATCH FOR NORTH BAY HILLS. MONSOONAL MOISTURE BRUSHES US TUESDAY-WEDNESDAY.

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SHORT TERM OUTLOOK

High temperatures in the low 90s to low 100s will prevail across the inland North Bay through Wednesday. The National Weather Service has issued an Excessive Heat Watch for the interior mountains of the North Bay where little cooling will take place at night. That Watch runs from 11AM to 8PM on Tuesday and will likely be upgraded soon to a Heat Advisory.

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High pressure will reach its peak across Northern California Tuesday and perhaps Wednesday, with temperatures as much as 15-20 degrees above normal for the date. The temperature forecast has trended somewhat hotter in the past 24 hours.

Highs expected Tuesday. Wednesday will be similar before slow cooling arrives.

As always, areas very near the coast will be much cooler, but the marine air will be compressed by strong high pressure and won’t penetrate far inland through the week.

A slug of moisture from the desert Southwest is expected Tuesday or Wednesday, but showers should once again stay to our east, mainly over the Sierra.

After the peak around Tuesday, high temperatures will be slow to return to normal, with North Bay inland highs in the high 80s and low 90s into Friday. By Saturday, more significant cooling is forecast to take place, back into the high 70s to mid 80s.