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Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Millbrae, CA
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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
20°
18
24°
19
23°
20
22°
21
21°
22
19°
23
18°
24
17°
25
17°
26
17°
27
17°
28
17°
29
18°
30
18°
31
18°
Forecast
Sunday, May 17, 2026
Day
20°
Feels 20
Wind
43 km/h W
Gust
65 km/h
Humidity
37%
P.O.P
20%
Night
16°
Feels 15
Wind
33 km/h N
Gust
49 km/h
Humidity
55%
P.O.P
20%
Historical Averages
May 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
May
Average Temperature
High
18°
Feels 17
Low
10°
Feels 8
Average Precipitation
2 Days
Rain amount
7mm
Snow amount
0cm