Extreme Heat Warning
* WHAT...Dangerously hot conditions with high temperatures in the
upper 90s to 103. Nights will be very warm with low temperatures in
the lower to mid 70s.
* WHERE...Orange County Inland Areas.
* WHEN...Until 8 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase signi…
Tomorrow in Irvine looks
sunny, with a high of 98°
and an overnight low of 78°.
Rain is unlikely (1% chance).
Winds top out near 9 mph,
and the UV index reaches 7 (high).
Irvine has a semi-arid climate.
August is the warmest month, with average highs of 83°,
and January the coldest, when nights fall to around 48°.
January brings the most rain, on about 6 days,
while July is the sunniest, with 13.4 hours of sunshine a day.
Over a whole year it rains on roughly 40 days.
January, at 3.1 inches (80 mm) over about 6 days. July is the driest month, at 3 mm (0.1 in).
What is the best month to go to Irvine?
The best time to visit Irvine is generally January to June, when temperatures sit either side of the peak heat rather than in it. Daytime temperatures in that window sit near 70°F (21°C), with rain on about 4 days a month. For the same question asked the other way round, see where else is warm in January.
How warm is Irvine on average?
64°F (18°C) across all twelve months - about 73°F (23°C) by day and 56°F (13°C) after dark.
What should I pack for Irvine?
It depends on the month: August runs to 83°F (28°C) while January holds at 65°F (18°C). The full month-by-month breakdown is in the packing notes above.
How often does it rain in Irvine?
About 40 days bring measurable precipitation, totalling 14.6 inches (370 mm). That works out at roughly 9.2 mm on an average wet day.
What is the coldest month in Irvine?
January, with highs of 65°F (18°C) and lows near 48°F (9°C). The coldest day in the 2015-2024 record fell to 34°F (1°C).
Is there snow in Irvine?
Effectively no. The 2015-2024 record for Irvine shows no regular measurable snowfall.
When is Irvine at its hottest?
August, averaging 83°F (28°C) by day and 65°F (18°C) overnight. The hottest single day in our 2015-2024 record for this location reached 108°F (42°C).