Eds Note: Submitted by John C. Toman, meteorologist.
Building high pressure over the region will lead to hot days Sunday through Wednesday in the Temecula Valley.
Temperatures are predicted to continue to increase this weekend, peaking in the 100's Monday and Tuesday. Weak, dry offshore flow will also be present next week, especially in the mornings, elevating the wildfire threat.
By Thursday, the heat wave will be over. Temperatures are expected to fall into the weekend as high pressure slides south, replaced by onshore flow, and finally by a cut-off low.
Today: Mostly sunny. Very warm. Northwest wind becoming south to 10 mph, high near 96 degrees; tonight: Mostly clear. South wind to 10 mph in the evening becoming northeast, low around 61 degrees.
Sunday: Mostly sunny. Hot. North wind becoming south to 10 mph, high of about 99 degrees; Sunday night: Clear, low near 62 degrees.
Monday: Sunny. Hot, high around 103 degrees; Monday night: Clear, low of about 64 degrees.
Tuesday: Sunny. Hot, high near 105 degrees; Tuesday night: Clear, low around 62 degrees.
Wednesday: Sunny. Hot, high of about 99 degrees; Wednesday night: Clear, low near 60 degrees.
Thursday: Mostly sunny. Very warm, high around 96 degrees; Thursday night: Mostly clear, low of about 60 degrees.
Friday: Mostly sunny. Very warm, high near 90 degrees.