LAKE COUNTY, Calif. – A cold weather system moving down from the Gulf of Alaska will bring an abrupt change in temperatures beginning Tuesday, with chances for overnight frosts throughout Memorial Day weekend.
According to Western Weather Group Lake County, as the system approaches the Pacific Northwest, blustery south west to westerly winds will pick up across our area, bringing daytime highs on Tuesday that will be 10 to 12 degrees cooler than the previous day.
Temperatures will continue trending downward on Wednesday when daytimes highs are only expected to reach into the 60s.
With the cold, dry air mass, wind-protected valley areas may see a light frost as temperatures drop into the low- to mid-30s overnight on Wednesday.
Daytime highs on Thursday are expected to be about the same as Wednesday, ranging into the 60s, but with little daytime heating, overnight temperatures will once again drop to near freezing and overnight frost will once again be possible.
If the system remains dry – which forecasters predict it will – frost overnight remains a possibility in isolated areas throughout the weekend.
Daytime highs Friday through Sunday will increase back into the 70s, but will remain below normal temperature for this time of year.
This cooler-than-normal trend is forecast to remain until the beginning of June.
While the last official frost date of the year for Lake County is May 15, that only means there is a 90 percent chance that no more frost will occur.
This may be one of those years in the 10 percent category, so residents in frost-prone areas are encouraged to protect tender plants such as tomatoes, potatoes, zucchini, cucumbers and basil that already have been planted.
Another unsettled weather system with a slight chance for rain also is approaching next week according to forecasters; more information will be available as it moves closer.
Email Terre Logsdon at This email address is being protected from spambots. You need JavaScript enabled to view it. .