The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Portola Hills, CA
Content continues below
May
Average Temperature
High
23°
Feels 23
Low
11°
Feels 11
Average Precipitation
1 Days
Rain amount
3.5mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23°
23
23°
24
23°
25
21°
26
19°
27
19°
28
19°
29
23°
30
27°
31
29°
Forecast
Friday, May 22, 2026
Day
23°
Feels 23
Wind
13 km/h SW
Gust
20 km/h
Humidity
45%
P.O.P
10%
Night
11°
Feels 11
Wind
10 km/h S
Gust
15 km/h
Humidity
94%
P.O.P
10%
Historical Averages
May 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.