weather.gov
Home
News
Organization
Search for:
NWS
All NOAA
Point Forecast:
Castro Valley CA
37.69N 122.05W (Elev. 364 ft)
Last Update: 12:26 am PST Dec 5, 2023
[hide menu]
Weather Elements
Weather/Precipitation
Temperature (°F)
Dewpoint (°F)
Wind Chill (°F)
Surface Wind
kt
mph
km/h
m/s
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Snow
Freezing Rain
Sleet
Fog
Lightning Activity Level
Trans. Wind
kt
mph
km/h
m/s
20ft Wind
kt
mph
km/h
m/s
48-Hour Period Starting:
2am Tue, Dec 5 2023
3am Tue, Dec 5 2023
4am Tue, Dec 5 2023
5am Tue, Dec 5 2023
6am Tue, Dec 5 2023
7am Tue, Dec 5 2023
8am Tue, Dec 5 2023
9am Tue, Dec 5 2023
10am Tue, Dec 5 2023
11am Tue, Dec 5 2023
12pm Tue, Dec 5 2023
1pm Tue, Dec 5 2023
2pm Tue, Dec 5 2023
3pm Tue, Dec 5 2023
4pm Tue, Dec 5 2023
5pm Tue, Dec 5 2023
6pm Tue, Dec 5 2023
7pm Tue, Dec 5 2023
8pm Tue, Dec 5 2023
9pm Tue, Dec 5 2023
10pm Tue, Dec 5 2023
11pm Tue, Dec 5 2023
12am Wed, Dec 6 2023
1am Wed, Dec 6 2023
2am Wed, Dec 6 2023
3am Wed, Dec 6 2023
4am Wed, Dec 6 2023
5am Wed, Dec 6 2023
6am Wed, Dec 6 2023
7am Wed, Dec 6 2023
8am Wed, Dec 6 2023
9am Wed, Dec 6 2023
10am Wed, Dec 6 2023
11am Wed, Dec 6 2023
12pm Wed, Dec 6 2023
1pm Wed, Dec 6 2023
2pm Wed, Dec 6 2023
3pm Wed, Dec 6 2023
4pm Wed, Dec 6 2023
5pm Wed, Dec 6 2023
6pm Wed, Dec 6 2023
7pm Wed, Dec 6 2023
8pm Wed, Dec 6 2023
9pm Wed, Dec 6 2023
10pm Wed, Dec 6 2023
11pm Wed, Dec 6 2023
12am Thu, Dec 7 2023
1am Thu, Dec 7 2023
2am Thu, Dec 7 2023
3am Thu, Dec 7 2023
4am Thu, Dec 7 2023
5am Thu, Dec 7 2023
6am Thu, Dec 7 2023
7am Thu, Dec 7 2023
8am Thu, Dec 7 2023
9am Thu, Dec 7 2023
10am Thu, Dec 7 2023
11am Thu, Dec 7 2023
12pm Thu, Dec 7 2023
1pm Thu, Dec 7 2023
2pm Thu, Dec 7 2023
3pm Thu, Dec 7 2023
4pm Thu, Dec 7 2023
5pm Thu, Dec 7 2023
6pm Thu, Dec 7 2023
7pm Thu, Dec 7 2023
8pm Thu, Dec 7 2023
9pm Thu, Dec 7 2023
10pm Thu, Dec 7 2023
11pm Thu, Dec 7 2023
12am Fri, Dec 8 2023
1am Fri, Dec 8 2023
2am Fri, Dec 8 2023
3am Fri, Dec 8 2023
4am Fri, Dec 8 2023
5am Fri, Dec 8 2023
6am Fri, Dec 8 2023
7am Fri, Dec 8 2023
8am Fri, Dec 8 2023
9am Fri, Dec 8 2023
10am Fri, Dec 8 2023
11am Fri, Dec 8 2023
12pm Fri, Dec 8 2023
1pm Fri, Dec 8 2023
2pm Fri, Dec 8 2023
3pm Fri, Dec 8 2023
4pm Fri, Dec 8 2023
5pm Fri, Dec 8 2023
6pm Fri, Dec 8 2023
7pm Fri, Dec 8 2023
8pm Fri, Dec 8 2023
9pm Fri, Dec 8 2023
10pm Fri, Dec 8 2023
11pm Fri, Dec 8 2023
12am Sat, Dec 9 2023
1am Sat, Dec 9 2023
2am Sat, Dec 9 2023
3am Sat, Dec 9 2023
4am Sat, Dec 9 2023
5am Sat, Dec 9 2023
6am Sat, Dec 9 2023
7am Sat, Dec 9 2023
8am Sat, Dec 9 2023
9am Sat, Dec 9 2023
10am Sat, Dec 9 2023
11am Sat, Dec 9 2023
12pm Sat, Dec 9 2023
1pm Sat, Dec 9 2023
Date
12/05
12/06
Hour (PST)
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
Temperature (°F)
51
51
50
50
50
50
51
55
58
63
65
66
67
67
65
62
59
57
56
56
55
53
53
52
Dewpoint (°F)
49
48
47
48
48
48
50
52
53
54
55
54
55
54
54
54
52
51
51
50
50
49
48
48
Wind Chill (°F)
50
50
50
49
Surface Wind (mph)
2
3
2
2
2
3
3
5
6
6
6
6
6
6
5
3
3
3
2
2
2
2
3
3
Wind Dir
NE
ENE
ENE
ENE
ENE
ENE
E
ENE
ENE
ENE
E
E
NNE
ENE
E
E
ESE
SE
SE
S
SSE
S
S
S
Gust
Sky Cover (%)
32
36
43
46
48
49
36
20
17
22
17
25
24
30
31
42
48
47
27
26
28
33
41
44
Precipitation Potential (%)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
5
5
5
5
Relative Humidity (%)
92
90
90
94
95
96
95
89
83
73
70
65
64
64
68
75
79
80
82
82
83
85
85
86
Rain
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Thunder
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Snow
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Freezing Rain
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Sleet
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Date
12/07
Hour (PST)
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
00
01
Temperature (°F)
52
51
50
50
50
51
52
55
57
58
59
59
59
59
58
57
56
54
54
53
52
52
51
51
Dewpoint (°F)
48
47
46
48
49
48
51
53
54
56
56
57
57
57
56
56
55
54
53
52
51
50
50
49
Wind Chill (°F)
48
49
49
Surface Wind (mph)
5
5
5
5
5
6
6
8
10
10
10
11
11
11
11
11
11
7
7
7
6
6
6
6
Wind Dir
SSW
WSW
WSW
SW
SSW
SSW
SSW
S
SSW
SSW
SSW
S
S
S
SW
SW
SW
WSW
WSW
WSW
W
W
W
W
Gust
18
18
18
18
18
18
Sky Cover (%)
47
57
65
73
77
74
71
67
95
95
95
95
95
95
71
71
71
74
74
74
44
44
44
35
Precipitation Potential (%)
5
5
26
26
26
26
26
26
92
92
92
92
92
92
48
48
48
48
48
48
10
10
10
10
Relative Humidity (%)
85
86
88
92
93
91
95
93
90
90
91
92
93
93
94
95
96
97
96
95
94
94
94
95
Rain
--
--
Chc
Chc
Chc
Chc
Chc
Chc
Ocnl
Ocnl
Ocnl
Ocnl
Ocnl
Ocnl
Chc
Chc
Chc
Chc
Chc
Chc
--
--
--
--
Thunder
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Snow
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Freezing Rain
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Sleet
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
International System of Units
Forecast Discussion
7-Day Forecast
Hourly Weather Graph
Hourly River Stages
Hourly Rainfall
NWS Office Map
Weather Calculator
User Defined Area
Webmaster
NOAA's National Weather Service
San Francisco Bay Area/Monterey, CA
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities