Extreme Heat Warning
* WHAT...Dangerously hot conditions with high temperatures in the
upper 90s to 105. Nights will be very warm with low temperatures in
the upper 60s to mid 70s.
* WHERE...San Bernardino and Riverside County Valleys-The Inland
Empire.
* WHEN...Until 8 PM PDT Thursday.
* IMPACTS.…
Tomorrow in Riverside looks
sunny, with a high of 100°
and an overnight low of 82°.
Rain is unlikely (0% chance).
Winds top out near 12 mph,
and the UV index reaches 8 (high).
Riverside has a semi-arid climate.
August is the warmest month, with average highs of 96°,
and January the coldest, when nights fall to around 44°.
January brings the most rain, on about 6 days,
while July is the sunniest, with 13.7 hours of sunshine a day.
Over a whole year it rains on roughly 40 days.
January nights average 44°F (7°C). Chilly rather than harsh - hard freezes are uncommon.
When is Riverside at its hottest?
August, averaging 96°F (35°C) by day and 67°F (19°C) overnight. The hottest single day in our 2015-2024 record for this location reached 116°F (47°C).
When should I visit Riverside?
January to May and November is the sweet spot for Riverside - temperatures sit either side of the peak heat rather than in it. Expect 72°F (22°C) in the afternoon and around 5 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in January.
What is the rainiest month in Riverside?
January, at 3.4 inches (87 mm) over about 6 days. June is the driest month, at 1 mm (0.0 in).
Is Riverside a wet city?
14.7 inches (374 mm) a year across 40 wet days - less than 90% of the cities we cover.
How warm is Riverside on average?
65°F (19°C) across all twelve months - about 80°F (26°C) by day and 54°F (12°C) after dark.
Which month is coolest in Riverside?
January, with highs of 65°F (18°C) and lows near 44°F (7°C). The coldest day in the 2015-2024 record fell to 28°F (-2°C).
Does it snow in Riverside?
Effectively no. The 2015-2024 record for Riverside shows no regular measurable snowfall.