Weather will likely play an important role when you plan your trip to Las Lomitas, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and December with an average temp of 82°F, while the coldest months are July and June with an average of 65°F. The snowiest months in Las Lomitas are May, January, February, and March, with each month seeing an average of 7 inches of snowfall.