September Rain Chances

A few light showers will be possible around our area early in the day Monday. Instability within the post-frontal environment along with a deep onshore push should be enough “oomph” to get a few showers going along with a very slight chance for a thunderstorm. Temperatures will be cool, especially inland, where they could be as much as 20ºF below normal! As the low moves out Tuesday another lobe of the overall trough will rotate down the coast and could bring another round of rain on Wednesday. Beyond that, high pressure slowly builds in for a very warm weekend.

AIR QUALITY: Good to Moderate

Overnight: Mostly cloudy with shower chances increasing toward dawn. Lows in the 50s for most areas with a few 40s for southern inland valleys. Gusty northwesterly onshore and upvalley winds at times.

Monday: Mostly cloudy early with scattered showers, then becoming partly cloudy with an isolated shower possible and also a very slight chance of a thunderstorm. Gusty west-northwesterly onshore and up-valley winds at times early, then tapering off late. Coastal highs in the 60s with 60s to low 70s inland.

Tuesday: Partly cloudy on the coast and mostly sunny inland with coastal highs in the mid 60s to low 70s and 70s to around 80ºF inland. Breezy onshore winds becoming stronger up valleys late in the day.

Extended: On Wednesday, another system passes through bringing another chance for light rain. High pressure then slowly builds in toward the weekend with highs back above normal by Friday.

*Note: Any alerts from the National Weather Service in Monterey will be noted in italics above. Alerts may be edited for brevity or local clarification

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This week's normal temperatures:
--COASTAL CITIES--
LOW: 55ºF
HIGH: 71ºF

--INLAND CITIES--
LOW: 52ºF
HIGH: 86ºF
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-The outlook from the Climate Prediction Center for September 23^rd - 29^th calls for the likelihood of ABOVE normal temperatures and near normal precipitation.

- ENSO (El Niño/La Niña) STATUS: La Niña Watch
- ENSO Forecast: Transition to La Niña into the fall and persist through the winter months.
- Area drought status: Abnormally dry for areas around Monterey Bay northward. Drought-free elsewhere.
- Monterey Bay Sea Surface Temperature* as of September 16^th: 57.7ºF
(Historic Sep AVG near Monterey: 59.6ºF) -- *average of 7 buoys