Temps take a step back

Posted at 4:21 PM, Sep 20, 2018
and last updated 2018-09-20 20:58:27-04

The offshore winds of Thursday will break down on Friday and some low pressure off the coast will help to redevelop marine clouds later Friday into Saturday.

Clouds return late Friday

This will bring coastal valley and beach temps down Friday through the weekend.  Inland highs will still manage a run into the upper 80s on Friday while coastal valleys will hit the mid 70s with beaches in the mid 60s.  I think similar temps hold through the weekend.  I like slightly above average temps through most of next week.

Friday’s hourly forecast for SLO

Model runs keep flip flopping about rain chances in early October.  Yesterday models showed a potentially wet pattern beginning, no sign of that today in the American GFS model.

GFS Model for Oct. 3rd was wet now it is dry

This is the highly speculative end of the run which tends to change wildly.  I will keep you advised if the rain potential returns.

Fall begins at 6:54 pm on Saturday with the equinox. During the equinox, the Sun crosses the “celestial equator.” Imagine a line that marks the equator on Earth extending up into the sky above the equator from north to south. Earth’s two hemispheres receive the Sun’s rays about equally. The Sun is overhead at noon as seen from the equator, so at this point, the amount of nighttime and daytime (sunlight) are roughly equal to each other.