And is this the Covid Vaccine . The challenges still ahead thin fight against the virus. But first frosty temperatures across the bay area tonight with a freeze warning going into effect in just a few hours. And janelle, finally feels like november. Lets get right to jeff and how cold is it going to get tonight . Were going to get down to the 30s and some isolated 20s. The coldest weather is going to be in marin, napa, also sonoma counties. You can see on my weather map here that focus will bring us some widespread 30s and a few isolated 20s. Now, this will be in effect until 9 00 a. M. Tomorrow so make sure to bring those pets inside. And with patchy frost possible you want to make sure to cover up those sensitive plants. How low are we going to go . Up in the north bay 31 santa rosa, 31 napa. Also cold here. 37 dublin, 35 levermer, and 36 san jose. Up to redwood city, 32 degrees. Well talk more about the cool weather that will stick around for tomorrow and also more chances of rain a