... Patchy frost possible late tonight into Saturday morning...
An unusually cool and dry air mass will invade the region on
northwest to north winds today. Despite sunshine returning for the
afternoon... temperatures are not expected to make it out of the 60s.
The wind will diminish tonight... and with clear skies... temperatures
will fall to very chilly readings by dawn. The coldest valley
locations are expected to be in the mid 30s... which may allow for
patchy frost to develop. At the same time... fog will also develop in
some valleys... which would help to limit the frost potential.
However... in the normally colder valley locations... it would be a
good idea to protect plants which are especially sensitive to frost.