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Storm Tracker Forecast: Warm & breezy final day of the summer season

Warm temperatures, breezy south winds, and impacted air quality are ahead for your final day of the summer season. Cooler temperatures, and the chance for showers will return to our region mid week, but temperatures will heat back up this weekend.

Posted: Sep 21, 2020 6:16 AM

Slightly above average temperatures, breezy south winds, and impacted air quality are ahead for your Monday. Low pressure tracking towards the Pacific Northwest from the Pacific will bring breezy south winds through our region today, but is not expected to bring any shower activity to our region. Temperatures are starting out in the 50's to 60's in the valley and foothills, while mountain areas have dipped into the 30's to 40's in most areas overnight. Winds are out of the northeast to around 10mph this morning, but will shift to become out of the south from 10 to 15mph this afternoon. Gusts up to around 20mph will be possible out of the south later today. Humidity is projected to dip into th e10 to 30 percent range across our entire region. High temperatures will end up in the upper 80's to low 90's in the valley, while foothill and mountain areas top out in the upper 70's to mid 80's this afternoon. The breezy winds, and low humidity will keep fire danger in the moderate range for most of us today. This is also the last full day of the summer season.

A very modest dip in temperatures is expected for your first day of the fall season on Tuesday. Valley areas are currently projected to end up in the mid to upper 80's, while mountain and foothill areas top out in the 70's to lower 80's on Tuesday afternoon. We'll stay in that same range on Wednesday, but a few more clouds will move into our region. There will be a chance for some showers along the coast as early as Wednesday night, but the latest models are keeping those at bay until Thursday afternoon and evening. The potential for showers will be as far inland as Redding, but valley showers are not likely as the trough moves into the Pacific Northwest late this week. Temperatures will be slightly cooler on Thursday afternoon in most of our region, but only by around 1 to 2 degrees compared to Wednesday.

The low pressure will move out of our region and to the east on Friday and high pressure will rebuild over our region. This will result in a modest uptick in temperatures on Friday afternoon, and a more substantial rise in temperatures through your weekend. Valley areas can expect high temperatures back in the mid to high 80's on Friday, and then in the mid to upper 90's this weekend. Mountain and foothill areas will end up back in the upper 70's to lower 80's on Friday and then in the mid 80's to lower 90's for your first weekend of the fall season. Skies will be clear, but we will likely still be dealing with haze and patchy smoke from wildfires.

California Coronavirus Cases

Data is updated nightly.

Confirmed Cases: 898799

Reported Deaths: 17305
CountyConfirmedDeaths
Los Angeles2968216974
Riverside657571279
San Bernardino617261070
Orange580101440
San Diego53928867
Kern33669416
Fresno30471436
Sacramento25094482
Santa Clara23881388
Alameda23133456
San Joaquin21528488
Contra Costa18413240
Stanislaus17509396
Tulare17425284
Ventura14124162
Imperial12700336
San Francisco12032140
Monterey1128487
San Mateo11002159
Santa Barbara9715120
Merced9439154
Sonoma9163134
Kings820183
Solano728674
Marin7045128
Madera498174
San Luis Obispo412132
Placer408857
Yolo314458
Butte304652
Santa Cruz275325
Napa192815
Shasta183930
Sutter183712
San Benito143215
El Dorado13084
Yuba129310
Mendocino112121
Tehama8528
Lassen7641
Lake67915
Glenn6523
Nevada6038
Humboldt5619
Colusa5496
Calaveras33917
Amador31716
Tuolumne2624
Inyo22715
Siskiyou1880
Del Norte1781
Mono1762
Mariposa782
Plumas630
Modoc290
Trinity260
Sierra60
Alpine30
Unassigned00
Chico
Clear
59° wxIcon
Hi: 75° Lo: 48°
Feels Like: 59°
Oroville
Clear
62° wxIcon
Hi: 76° Lo: 48°
Feels Like: 62°
Paradise
Clear
59° wxIcon
Hi: 68° Lo: 46°
Feels Like: 59°
Chester
Clear
40° wxIcon
Hi: 64° Lo: 33°
Feels Like: 34°
Red Bluff
Clear
54° wxIcon
Hi: 76° Lo: 48°
Feels Like: 54°
Willows
Clear
59° wxIcon
Hi: 77° Lo: 45°
Feels Like: 59°
Fire danger will be extreme Sunday-Monday as the biggest dry wind event of the season takes shape. A widespread freeze in the Sierra-Cascades as low as single-digit values possible Sunday night. Mild & sunny weather after Tuesday.
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