Bay Area's warm rain, mugginess to be replaced by hot-and-dry conditions

""By Sunday, we're going to see much warmer temperatures than we've seen this week, and Monday it's going to be even hotter," National Weather Service meteorologist Dial Hoang said Wednesday. "And the air is going to be quite a bit drier." The forecasts early Wednesday morning indicate temperatures in the hottest places - Concord, Livermore and Morgan Hill - will rise into the low to mid-80s by Sunday and the low-to-mid 90s by Monday. Those projected figures could go up."

"The underlying reason for the humidity, according to weather experts and the weather service, has been a marine heatwave - a significant increase in ocean temperature. The marine heat wave that the weather service currently is tracking started in May and covers an area from Southern California up past Canada toward the Alaska Gulf. What it means for the longer-term weather this fall and winter remains to be analyzed. What it meant over the past three nights has meant a dew point in the 60s."

Parts of the Bay Area received record daily rainfall this week, including 0.41 inches in San Jose and 0.11 inches in Half Moon Bay, breaking marks from 2003 and 1978. Humidity remained high, with dew points in the 60s and relative humidity above 70% regionwide. National Weather Service forecasts project warming, with Concord, Livermore and Morgan Hill rising into the low-to-mid 80s by Sunday and low-to-mid 90s by Monday, and drier air expected. The humidity is linked to a marine heatwave that began in May and spans from Southern California past Canada toward the Alaska Gulf.

Read at The Mercury News