The best time to visit Santa Rosa
Month-by-month climate averages for Santa Rosa, CA, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Santa Rosa is usually February, March, April and May, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.
Santa Rosa is warmest in July (highs near 85°F) and coldest in December (lows around 41°F), with roughly 36 inches of precipitation across the year and December the wettest month. The sweet spot for most visitors is February, March, April and May.
These are long-run averages. For the actual days you are travelling, check the live Santa Rosa forecast - and note how much the models agree, because that tells you how much to trust it.
Santa Rosa weather by month
what to expect in Santa Rosa through the year, 1991-2020 averagesHere is Santa Rosa's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Santa Rosa by season.