Irvine, CA 14-Day Forecast
California, United States 🇺🇸
79°
Sunny right now
Today: high 79°, low 66°
Updated just now
Irvine weather for the next 14 days
Wednesday, September 16
Sunny High 77° Low 65°Precipitation
4%
· 0.0 in
Max wind
11 mph
Humidity
63%
UV index
8 - Very High
Sunrise / sunset
06:35 AM / 06:56 PM
Thursday, September 17
Sunny High 79° Low 64°Precipitation
4%
· 0.0 in
Max wind
10 mph
Humidity
62%
UV index
8 - Very High
Sunrise / sunset
06:36 AM / 06:55 PM
Friday, September 18
Sunny High 81° Low 64°Precipitation
3%
· 0.0 in
Max wind
9 mph
Humidity
57%
UV index
8 - Very High
Sunrise / sunset
06:36 AM / 06:54 PM
Saturday, September 19
Sunny High 83° Low 65°Precipitation
3%
· 0.0 in
Max wind
9 mph
Humidity
58%
UV index
9 - Very High
Sunrise / sunset
06:37 AM / 06:52 PM
Sunday, September 20
Sunny High 82° Low 67°Precipitation
5%
· 0.0 in
Max wind
8 mph
Humidity
63%
UV index
7 - High
Sunrise / sunset
06:38 AM / 06:51 PM
Monday, September 21
Sunny High 78° Low 66°Precipitation
4%
· 0.0 in
Max wind
9 mph
Humidity
66%
UV index
7 - High
Sunrise / sunset
06:38 AM / 06:49 PM
Tuesday, September 22
Sunny High 82° Low 65°Precipitation
4%
· 0.0 in
Max wind
8 mph
Humidity
66%
UV index
7 - High
Sunrise / sunset
06:39 AM / 06:48 PM
Wednesday, September 23
Sunny High 83° Low 68°Precipitation
5%
· 0.0 in
Max wind
8 mph
Humidity
60%
UV index
7 - High
Sunrise / sunset
06:40 AM / 06:47 PM
Thursday, September 24
Overcast High 83° Low 71°Precipitation
57%
· 0.09 in
Max wind
9 mph
Humidity
63%
UV index
7 - High
Sunrise / sunset
06:40 AM / 06:45 PM
Friday, September 25
Sunny High 83° Low 68°Precipitation
5%
· 0.0 in
Max wind
9 mph
Humidity
66%
UV index
7 - High
Sunrise / sunset
06:41 AM / 06:44 PM
Saturday, September 26
Overcast High 82° Low 69°Precipitation
11%
· 0.0 in
Max wind
7 mph
Humidity
60%
UV index
6 - High
Sunrise / sunset
06:42 AM / 06:43 PM
Sunday, September 27
Overcast High 84° Low 69°Precipitation
7%
· 0.0 in
Max wind
6 mph
Humidity
54%
UV index
7 - High
Sunrise / sunset
06:42 AM / 06:41 PM
Monday, September 28
Sunny High 89° Low 70°Precipitation
1%
· 0.0 in
Max wind
8 mph
Humidity
45%
UV index
8 - Very High
Sunrise / sunset
06:43 AM / 06:40 PM
Irvine 14-day outlook: the story
The warmest day of Irvine's 14-day outlook is Monday, September 28 with a high near 89°F (32°C); the coolest night comes Thursday, September 17, dipping to 64°F (18°C). The trend points warmer: week two runs about 4°F above week one. Highs over the next two weeks average 80°F (26°C), right in line with the typical September high of 82°F (28°C).
Precipitation is most likely on Thursday 24; the wettest day looks like Thursday, September 24 with about 0.09 in (2.2 mm) expected. For the weekend, expect Saturday 83°F (28°C) and sunny / Sunday 82°F (28°C) and sunny.
For typical conditions month by month, see the Irvine climate & average temperatures guide.
Irvine forecast questions
Will it rain in Irvine this week?
The forecast currently shows meaningful precipitation chances on 1 of the next 14 days, peaking around Thursday, September 24.
What will be the warmest day in Irvine over the next 14 days?
Monday, September 28, with a forecast high near 89°F (32°C).
How accurate is a 14-day forecast for Irvine?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Irvine by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 65° | 48° | 6 | 3.1 in | 8.4 h/day | 69% |
| February | 66° | 48° | 6 | 2.6 in | 9.1 h/day | 65% |
| March | 67° | 50° | 8 | 2.4 in | 10.4 h/day | 72% |
| April | 71° | 54° | 4 | 0.8 in | 11.3 h/day | 70% |
| May | 71° | 56° | 3 | 0.6 in | 12.0 h/day | 74% |
| June | 77° | 60° | 1 | 0.2 in | 13.0 h/day | 73% |
| July | 81° | 64° | 0 | 0.1 in | 13.4 h/day | 74% |
| August | 83° | 65° | 1 | 0.3 in | 12.4 h/day | 74% |
| September | 82° | 64° | 2 | 0.4 in | 11.3 h/day | 73% |
| October | 79° | 60° | 2 | 0.5 in | 10.3 h/day | 68% |
| November | 72° | 53° | 2 | 0.8 in | 9.5 h/day | 60% |
| December | 66° | 48° | 5 | 2.5 in | 8.1 h/day | 66% |
14-day forecasts nearby