Northern California forecast: Nice mornings, very warm afternoons to close out August

HERE WITH YOU, THOUGH. THAT’S TRUE. I’M TALKING ABOUT EVERYBODY ELSE THAT’S STUCK IN THE OFFICE. WE HAVE IT GOOD HERE. YEAH. METEOROLOGIST HEATHER WALDMAN WE GOT PRETTY COMFORTABLE TEMPERATURES OUT THERE, CONSIDERING. YEAH, AND IT ALL STARTED WITH A REALLY NICE, COMFORTABLE MORNING. REALLY? FOR A LOT OF SPOTS, BUT ESPECIALLY THROUGH THE DELTA AND INTO PARTS OF THE VALLEY AROUND SACRAMENTO COUNTY. STARTING THE DAY IN THE UPPER 50S TO LOW 60S, THE NUMBER RIGHT NOW 88 DEGREES THERE IN FAIRFIELD, 93 AT EXECUTIVE AIRPORT. DOWNTOWN SACRAMENTO IS SITTING RIGHT AROUND 96 DEGREES, BUT NUMBERS ALL ACROSS THE BOARD RUNNING A BIT LOWER COMPARED TO THIS TIME YESTERDAY. HERE’S THE REASON WHY WE’VE GOT TO LOOK OFFSHORE. ALL OF THIS WIDESPREAD CLOUD COVER THAT’S A VISUAL INDICATOR THAT THE MARINE LAYER IS NOT ONLY WIDESPREAD, BUT IT’S GETTING RELATIVELY DEEP. SO THE LAYER OF COOL AIR AT THE COAST IS STACKING UP. THAT’S ONE MAJOR INGREDIENT WE NEED FOR COOL AIR AT THIS TIME OF THE YEAR. AND OF COURSE, WITH THE AFTERNOON SUN, IT’S MODERATELY COOL. BUT HERE’S HOW DEEP THAT MARINE LAYER IS. RIGHT AROUND 2000FT AT THIS POINT. WHEN IT GETS DOWN TO AROUND 1000FT OR BELOW, THAT’S WHEN THE DELTA BREEZE REALLY KIND OF LOSES ITS IMPACT FOR SACRAMENTO COUNTY IN PARTICULAR. BUT NOW THAT WE’VE GOT THAT DEEP MARINE LAYER, WE’VE GOT THE WINDS COMING ONSHORE. THEY’VE BACKED OFF THIS AFTERNOON. BUT THEY’LL PICK UP AGAIN HERE IN AN HOUR OR SO. AND THAT DELTA BREEZE REALLY HELPING TO KEEP THINGS FEELING FRESH IN THE EVENINGS AND INTO THE OVERNIGHTS. AND IT’S LEADING TO AFTERNOONS THAT ARE AT LEAST A FEW DEGREES LOWER THAN WHAT WE SAW THE LAST COUPLE OF DAYS WHEN THE DELTA BREEZE WASN’T QUITE AS EFFECTIVE. SO HERE’S FUTURECAST SHOWING THAT ONSHORE FLOW, ESPECIALLY FOR THE SAN JOAQUIN VALLEY, IT WILL PICK UP IN A COUPLE OF HOURS AND THEN IT WILL BACK OFF AGAIN OVERNIGHT. BUT LOOK AT THE WIND ARROWS HERE. NOTICE EVEN THOUGH THE WINDS ARE LIGHT TOMORROW, THE WIND IS STILL COMING UP OUT OF THE SOUTH THROUGH THE SACRAMENTO VALLEY. IT’S COMING THROUGH THE NORTH THROUGH THE SAN JOAQUIN VALLEY. THAT SHOULD HELP TO KEEP TEMPERATURES FOR MOST PLACES BELOW 100 DEGREES, JUST BARELY SO. BUT STILL, TEMPERATURES IN THE UPPER 90S TOMORROW AFTERNOON AND THEN IN THE EVENING ONCE AGAIN, IT’S RIGHT BACK INTO THE DELTA BREEZE. SO WHAT TO KNOW THROUGH SATURDAY, WE’LL HAVE SOME REALLY NICE MORNINGS IN THE VALLEY. IT WILL BE A LITTLE MILDER INTO THE FOOTHILLS, WHERE THAT ONSHORE FLOW DOESN’T QUITE REACH. AFTERNOONS WILL BE VERY WARM, BUT IT’S THE KIND OF WARMTH THAT WE’RE USED TO AT THIS POINT IN THE SEASON. UPPER 90S A COUPLE SPOTS AROUND 100 DEGREES. WE’LL START WITH THE COAST. THIS WILL OF COURSE, BE THE MILDEST SPOT TOMORROW WITH TEMPERATURES IN THE UPPER SECONDS FOR FAIRFIELD INTO THE EAST BAY. LOW 70S IN SAN FRANCISCO, WHERE AGAIN, THAT CLOUD COVER WILL BE A LITTLE BIT STUBBORN FOR THE FIRST HALF OF THE DAY. SHOULD SEE SOME AFTERNOON SUNSHINE THOUGH. SAN JOAQUIN VALLEY AGAIN. THE ONSHORE FLOW HELPING TEMPERATURES START IN THE UPPER 50S TO LOW 60S. AFTERNOON HIGHS UPPER SECONDS IN MOST PLACES. TURLOCK MAY JUST BARELY GET TO 100 DEGREES FOR AN HOUR OR TWO TOMORROW AFTERNOON. SPOTLIGHT ROSEVILLE, ROSEVILLE OR FOLSOM MAY JUST BARELY HIT 100, BUT NOTICE PLENTY OF 90S FROM SACRAMENTO INTO ELK GROVE MORNING TEMPERATURES STARTING IN THE LOWER 60S INTO THE FOOTHILLS MID TO UPPER 60S PLACERVILLE AT THE AIRPORT MAY JUST START AT 70 DEGREES AFTERNOON HIGHS IN THE LOW TO MID 90S AND FINALLY IN THE SIERRA STARTING IN THE 30S AROUND TRUCKEE AND TAHOE, ENDING WITH TEMPERATURES IN THE LOW TO MID 80S. SEVEN DAY FORECAST SHOWS AGAIN UPPER 90S TO AROUND 100 DEGREES. THAT’S A LITTLE BIT OF A CHANGE. FEWER NUMBERS COMPARED TO WHAT WE WERE SHOWING ON THE SEVEN DAY YESTERDAY. BUT IN REALITY, THE OVERALL FEEL OF THE FORECAST IS THE SAME. OKAY. THANK

Northern California forecast: Nice mornings, very warm afternoons to close out August

Milder weather is expected Sunday and Monday before another round of summerlike heat next week.

Updated: 4:32 PM PDT Aug 29, 2024

Meteorologist/Climate Reporter

Afternoon temperatures will run above average for a couple more days in Northern California. Milder weather is in the forecast for the second half of the Labor Day weekend. A delta breeze with plenty of cool coastal air will drop Valley temperatures into the upper 50s and low 60s Thursday night. That onshore flow will weaken on Friday, but will still be enough to cap temperatures between 96 and 100 degrees throughout the Valley. Winds will be light in the Foothills throughout the day. Temperatures will start in the mid to upper 60s and peak in the mid 90s. In the Sierra, Friday will start cold with temperatures in the upper 30s around Lake Tahoe. Afternoon highs will feel like summer; temperatures will be in the low to mid 80s. Saturday will feel very similar to Friday with a comfortable morning and warmer than average afternoon. Sunday will be noticeably breezier for most. That breeze will bring in milder weather for Labor Day. Monday’s high temperatures will stay in the upper 80s to around 90 degrees in the Valley.More heat looks likely later next week.

Afternoon temperatures will run above average for a couple more days in Northern California. Milder weather is in the forecast for the second half of the Labor Day weekend.

A delta breeze with plenty of cool coastal air will drop Valley temperatures into the upper 50s and low 60s Thursday night.

That onshore flow will weaken on Friday, but will still be enough to cap temperatures between 96 and 100 degrees throughout the Valley.

Winds will be light in the Foothills throughout the day. Temperatures will start in the mid to upper 60s and peak in the mid 90s.

In the Sierra, Friday will start cold with temperatures in the upper 30s around Lake Tahoe. Afternoon highs will feel like summer; temperatures will be in the low to mid 80s.

Saturday will feel very similar to Friday with a comfortable morning and warmer than average afternoon.

Sunday will be noticeably breezier for most. That breeze will bring in milder weather for Labor Day. Monday’s high temperatures will stay in the upper 80s to around 90 degrees in the Valley.

More heat looks likely later next week.