 The high temperatures range from 50s to 30s in the winters while summers temperature range is 90s to 60s or 50s, with highs well into the 100s for the Sacramento region.Snow covers the mountains (generally above 3000 feet) in mid January through February.Fog occurs infrequently or occurs normally in the west and coast, especially in the summer, creating some of the coolest summer conditions in North America.