San Francisco Bay Area Forecast 1 to 2 days (08/07/22-08/09/22) Mostly clear tonight through Tuesday except for low clouds near the coast spreading locally inland during the night and mornings through Monday becoming patchy near the coast by Tuesday. High temperatures in the low 60’s to low 70’s near the coast into the mid 80’s inland. Low temperatures mostly into the high 50’s to mid 60’s. Westerly winds becoming westerly 10 to 20 knots in the afternoons near the coast.

Extended Forecast for 3 to 7 days Central California (Including Napa County south along the Big Sur Coastline)- (08/09/22 -08/14/22) – Mostly clear Tuesday night through Sunday except for patchy low clouds near the coast and and a a slight chance showers or thundershowers at times over the mountains through Wednesday. High temperatures mostly in the high 50’s to low 60’s near the coast warming into the low 70 to low 80’s in the coastal valleys and rising into the mid to high 90’s into the Sacramento Valley warming a few degrees inland Thursday through Sunday. Low temperatures mostly in the mid 50’s to low 70’s.

Long Range Weather Outlook Northern and Central California 8 to 15 days (08/15/22 – 08/22/22) Mostly clear weather except for patchy low clouds near the coast at times through much of the period and a slight chance of showers or thundershowers at times over the Sierras increasing late in the period. Temperatures near normal to above normal during most of the period.

Longer Range Weather Outlook Northern and Central California 16 to 20 days (08/23/22 – 08/27/22– Mostly fair weather during the period patchy low clouds near the coast and a chance of showers or thundershowers at times over the mountains.  Temperatures averaging above normal.

Northern and Central California 1 to 7 day forecast  Skies are mostly clear inland over Northern and Central California this evening with low clouds near the coast spreading locally into coastal valleys nights and mornings. There will continue to be a slight chance of showers and thundershowers over the mountains decreasing later next week as monsoonal moisture continues to spread northward around the high pressure area inland but the winds are expected to turn more southwestery by the end of next week which would move the moisture further to the east. Onshore flow will continue the marine layer near the coast for much of the state with cooler temperatures near the coast as a pattern of low pressure off the coast and higher pressures inland continues through the weekend into next week keeping mild temperatures near the coast but much warmer temperatures persisting inland though the Sacramento Valley with high temperatures reaching into the 90’s and low 100’s.

Northern and Central California 8 to 15 day extended forecast   The computer models show high pressure holding over the interior of the west into California but with weak low pressure off the coast that would bring generally partly cloudy weather over coastal areas of California with generally south to southwest winds aloft during much of the period. The flow will be more southeasterly over the mountains as high pressure holds over the Western United States bringing occasional monsoon moisture northward over the Northern and Central Sierras with a slight chance of showers and thundershowers at times during the afternoons and evenings. Late in the period the flow turns more southeasterly that could increase the monsoonal moisture into the Sierras. Additionally there will be several tropical storms moving northwards along the Baja coast that will bear watching for additional moisture spreading northward into California. Temperatures should average near to slightly above normal during much of the period then warmer than normal late in the period as high pressure strengthens over California.

Northern and Central California 16 to 20 day extended Forecast – The most recent long range computer model this morning shows south to southeast winds aloft with a strong high pressure area over the interior west that would bring a chance of showers or thundershowers over the mountains with above normal temperautures during the period.

. Temperatures should average near normal.

 

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