S
M
T
W
T
F
S
31
91°
78°
1
86°
78°
2
86°
78°
3
84°
78°
4
85°
78°
5
84°
78°
6
85°
79°
7
91°
78°
8
90°
78°
9
90°
79°
10
91°
79°
11
96°
79°
12
91°
78°
13
92°
78°
14
87°
78°
15
90°
78°
16
96°
78°
17
N/A
18
97°
81°
19
96°
80°
20
95°
80°
21
96°
80°
22
95°
80°
23
94°
79°
24
92°
81°
25
93°
80°
26
92°
81°
27
93°
80°
28
93°
79°
29
92°
80°
30
88°
76°
1
87°
77°
2
87°
77°
3
85°
76°
4
85°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in San Mateo
San Mateo's June 2026 forecast shows daily high temperatures ranging from 85° to 97°, with overnight lows between 76° and 81°. The average high for June is 92° with an average low of 79°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in San Mateo. See also: July | August | September.
