Posted by: Richard | December 7, 2014

San Francisco Bay Area and Northern and Central California Forecast Discussion-07/25/2017 – 6:00AM PST

Short Term Weather 1 to 7 day Forecast Discussion – Weak upper level low pressure near the coast of California will bring cooler weather near the coast today but warm to hot temperatures inland as well as scattered afternoon and evening thundershowers to Northern California mountains. Low clouds will form along the coast during the night and spread locally into coastal valleys at times during the morning hours and there wil be some instability in the north as the trough moves through with a slight chance of showers and thundershowers over the northern mountains through Wednesday. There will be only slight fluctuations in the inland valley temperatures through week,

Northern and Central California 8 to 15 day extended forecast  Little change in the weather pattern is expected at the beginning of the period with southerly winds aloft bringing  occasional night and morning low clouds near the coast and sea breezes keeping temperatures near normal near the coast with warm to hot temperatures through the inland valleys. There will be a chance of afternoon convection over the mountains at times.  The high pressure is expected to weaken late in the period as a strong trough approaches Northern California and picke up an upper level system off the Southern California  This will bring a better chance of showers over the mountains and cooler weather.  

Northern and Central California 16 to 20 day extended forecast  Higher pressureare expected to rebuild over southwestern United States asan upper low moves east out of California later in the period with warmer temperatures inland and somewhat onshore winds near the coast with only a slight chance of showers or thundershowers over the mountains at times.



  1. Hi Richard. I have tried to subscribe to your blog and it tells me that I’m already subscribed but I am not receiving anything from you. I’ve checked my spam folder but nothing is appearing there either. Any ideas?

    Also, I’m wondering if you could give me any idea of how El Nino will be affecting Baja California this January? My family is contemplating a trip there in early January and I’m worried about the possibility of heavy rains. I’ve searched for weather models on-line but haven’t been able to find something for that area.
    Thanks much!

    • Hi Susan, I am not sure how to subscribe to my blog,,,,are you wanting notifications. I just assumed people will do what I do which is to bookmark the site and look at it whenever you want. As for January weather in Baja, it would be impossible to get a forecast that far out in time and it is still to early to use El Nino or La Nina to help you as we are not sure which will be true at this point. Generally, Baja weather is similar to San Diego weather which is impacted by the jet stream over California. If you want dependable weather in Mexico in Janary, go further south into Mexico like Puerto Villarta or Cancun and the Yukatan Peninsula where the northern jet stream has not effect. PV is a great city.

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    • Thanks for your comment. Where are you located? This coming week will be quite interesting for the Bay Area as the jet stream will be aimed at Central California and the Sierras which could add quite a bit of snow pack that is much needed to completely end our drought. The idea of notifications is an interesting idea, but I often revise the forecast several times per day. You may not be interested in minor forecast changes.


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