The best time to visit Riverside
Month-by-month climate averages for Riverside, CA, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Riverside is usually January, March, April and November, when daytime highs sit in the pleasant 60-78°F range and the heaviest February rain is behind you.
Riverside is warmest in August (highs near 95°F) and coldest in December (lows around 40°F), with roughly 15 inches of precipitation across the year and February the wettest month. The sweet spot for most visitors is January, March, April and November.
These are long-run averages. For the actual days you are travelling, check the live Riverside forecast - and note how much the models agree, because that tells you how much to trust it.
Riverside weather by month
what to expect in Riverside through the year, 1991-2020 averagesHere is Riverside'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 Riverside by season.