Here’s how cold it got across San Diego County before dawn Friday

Temperatures across San Diego County fell significantly below average before dawn on Friday due to an Alaskan storm that left behind a lot of cold air before it pushed off to the east on Thursday.

Here’s a sample of the overnight lows, which were generally 4 to 9 degrees below average, says the National Weather Service.

Mount Laguna: 27
Lake Cuyamaca: 28
Julian: 30
Ramona Airport: 33
Valley Center: 35
San Pasqual Valley: 36
Poway: 39
Alpine: 39
Gillespie Field: 41
Santee: 41
Oceanside Airport: 41
El Cajon: 42
Miramar MCAS: 42
Brown Field: 42
Rancho San Diego: 43
Rancho Bernardo: 43
Vista: 43
Escondido: 44
Montgomery Field: 45
Oceanside Harbor: 45
National City: 46
La Mesa: 46
Carlsbad Airport: 47
Lemon Grove: 47
San Diego International Airport: 48
Del Mar: 48