San Mateo Hourly Weather Forecast
Next 48 Hours
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Sunny skies in the morning, with Clear conditions expected by night. Warming trend from 55°F to 73°. Light winds, shifting from SW to SW at 5.5 mph, while humidity ranges from 47% to 92%, and an avg barometric pressure of 30.07 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
2 AM
56°F
55°F
89%
3.1 SW
30.1
52°F
0
13%
3 AM
56°F
55°F
89%
2.9 SW
30.09
53°F
0
13%
4 AM
55°F
55°F
89%
2.9 SW
30.08
52°F
0
13%
5 AM
55°F
55°F
89%
2.9 SW
30.09
52°F
0
13%
6 AM
55°F
55°F
90%
3.1 WSW
30.1
52°F
0
13%
7 AM
55°F
55°F
91%
2.9 SW
30.11
53°F
0
14%
8 AM
58°F
58°F
87%
2.7 WSW
30.12
54°F
0.3
12%
9 AM
62°F
62°F
76%
2.9 W
30.12
55°F
1.1
8%
10 AM
66°F
65°F
68%
4.3 NW
30.12
55°F
2.6
5%
11 AM
68°F
66°F
62%
5.8 NW
30.11
54°F
4.4
4%
12 PM
70°F
67°F
58%
6.9 NNW
30.1
54°F
6
3%
1 PM
71°F
68°F
54%
7.8 NW
30.08
53°F
6.7
2%
2 PM
73°F
69°F
49%
8.7 NW
30.06
52°F
6.4
2%
3 PM
73°F
69°F
47%
8.3 NW
30.04
52°F
5.1
1%
4 PM
73°F
68°F
47%
9.2 WNW
30.03
51°F
3.2
1%
5 PM
72°F
68°F
48%
8.1 WNW
30.01
51°F
1.5
2%
6 PM
69°F
65°F
54%
7.8 W
30.01
52°F
0.5
2%
7 PM
63°F
60°F
73%
6.9 WSW
30.01
54°F
0
7%
8 PM
58°F
56°F
86%
6 WSW
30.03
54°F
0
13%
9 PM
57°F
55°F
89%
5.6 SW
30.04
54°F
0
15%
10 PM
57°F
55°F
91%
5.4 SW
30.04
54°F
0
17%
11 PM
56°F
54°F
92%
5.8 SW
30.02
54°F
0
18%
Sat, Sep 19th 2026
Skies will shift from Sunny skies to partly cloudy as the day goes on. Warming trend from 55°F to 74°. Light winds, shifting from SW to WSW at 5.4 mph, while humidity ranges from 50% to 93%, and an avg barometric pressure of 29.97 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
12 AM
56°F
54°F
93%
5.8 SW
30.02
54°F
0
19%
1 AM
56°F
54°F
93%
5.1 SW
30.01
54°F
0
20%
2 AM
56°F
54°F
93%
5.4 SW
30.01
54°F
0
20%
3 AM
56°F
54°F
93%
4.7 SW
30
54°F
0
20%
4 AM
55°F
54°F
93%
4.7 SW
30
53°F
0
19%
5 AM
55°F
54°F
92%
4 SW
30
53°F
0
17%
6 AM
55°F
54°F
91%
3.8 SW
29.99
52°F
0
17%
7 AM
55°F
54°F
91%
3.6 SW
30
52°F
0
16%
8 AM
57°F
56°F
87%
2.9 SW
30
53°F
0.3
12%
9 AM
62°F
61°F
74%
2.2 SW
30
53°F
1.1
7%
10 AM
67°F
67°F
62%
1.1 W
30
53°F
2.7
4%
11 AM
70°F
69°F
53%
2.9 NNW
29.99
53°F
4.6
2%
12 PM
71°F
69°F
54%
5.8 NW
29.97
53°F
6.2
2%
1 PM
72°F
69°F
52%
7.2 NW
29.95
54°F
6.9
2%
2 PM
74°F
70°F
51%
7.8 WNW
29.94
54°F
6.5
2%
3 PM
73°F
70°F
50%
8.1 WNW
29.93
54°F
5.1
2%
4 PM
71°F
68°F
54%
8.7 WNW
29.92
54°F
3.3
3%
5 PM
69°F
65°F
58%
8.1 W
29.92
53°F
1.5
3%
6 PM
65°F
62°F
66%
7.4 W
29.93
53°F
0.5
9%
7 PM
59°F
57°F
82%
6.3 WSW
29.94
54°F
0
18%
8 PM
57°F
55°F
87%
6 WSW
29.95
53°F
0
25%
9 PM
57°F
54°F
88%
6.3 WSW
29.96
53°F
0
24%
10 PM
56°F
54°F
89%
5.6 WSW
29.96
53°F
0
17%
11 PM
56°F
54°F
90%
5.8 WSW
29.96
53°F
0
18%
Sun, Sep 20th 2026
Partly cloudy expected later. Temps around 56°. Light winds from the WSW at 5.5 mph, while humidity around 91%, and an avg barometric pressure of 29.95 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
12 AM
56°F
54°F
91%
5.4 WSW
29.95
54°F
0
19%
1 AM
56°F
54°F
91%
5.6 SW
29.95
53°F
0
18%
This hour by hour weather report is relevant for ZIP codes from 94401 through 94497, accurately covering all areas within San Mateo, CA.
Currently
|
56°F |
30.1 inHg.
Barometer 88%
Humidity SW 3.4mph Wind |
| Clear | ||
National Outlook
More Flash Flooding Expected in the Southwest and Plains: 09-17 to 09-19
Thu Sep 17th 2026, 5:06am PDT
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