Castro Valley, CA Current Weather Conditions

Current weather observations and 72-hour history for Castro Valley, CA. • View 5-Day Forecast ›

▼Current Conditions — Castro Valley, CA

OAKLAND (KOAK)

Partly Cloudy

59.0 F

Humidity:	88%
Wind Speed:	11.5 mph
Barometer:	29.94 in
Dewpoint:	55.4 F
Visibility:	10.00 mi
Precip:	--
Heat Index:	NA
Wind Chill:	NA

Sep 20 2026, 07:50 PM PDT

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▼Hourly Observation History — Castro Valley, CA

Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Temperature (F)		Relative Humidity	Wind Chill (F)	Heat Index (F)	Pressure
Time	Wind (mph)	Vis (mi)	Weather	Precip (in)	Air	Dwpt	Relative Humidity	Wind Chill (F)	Heat Index (F)	altimeter (in)	sea level (mb)
07:50 PM PDT	11.5	10.00	Partly Cloudy	--	59.0	55.4	88%	NA	NA	29.94	1013.9
07:45 PM PDT	11.5	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.93	1013.5
07:40 PM PDT		10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.94	1013.9
07:25 PM PDT	SW 5.7	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.94	1013.9
07:20 PM PDT	W 6.9	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.93	1013.5
07:15 PM PDT	5.7	10.00	Partly Cloudy	--	59.0	55.4	88%	NA	NA	29.93	1013.5
07:05 PM PDT	9.2	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.93	1013.5
07:00 PM PDT	11.5	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.91	1012.9
06:50 PM PDT	NW 4.6	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.91	1012.9
06:40 PM PDT	5.7	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.92	1013.2
06:30 PM PDT	W 5.7	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.91	1012.9
06:25 PM PDT	0.0	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.93	1013.5
06:20 PM PDT	3.4	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.92	1013.2
06:10 PM PDT	W 6.9	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.92	1013.2
06:05 PM PDT	SW 4.6	10.00	Partly Cloudy	--	60.8	55.4	82%	NA	NA	29.93	1013.5
06:00 PM PDT	5.7	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
05:50 PM PDT	12.7	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.90	1012.5
05:45 PM PDT	W 9.2	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.91	1012.9
05:35 PM PDT	W 6.9	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
05:20 PM PDT	W 8.1	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
05:05 PM PDT	9.2	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.91	1012.9
05:00 PM PDT	W 9.2	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
04:50 PM PDT	W 6.9	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
04:40 PM PDT	NW 8.1	10.00	Partly Cloudy	--	64.4	55.4	73%	NA	NA	29.92	1013.2
04:35 PM PDT	W 5.7	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
04:25 PM PDT	9.2	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.91	1012.9
04:15 PM PDT	5.7	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
04:05 PM PDT	W 10.4	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.93	1013.5
04:00 PM PDT	W 10.4	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
03:50 PM PDT	W 6.9	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.93	1013.5
03:45 PM PDT	W 8.1	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
03:40 PM PDT	9.2	10.00	Partly Cloudy	--	64.4	55.4	73%	NA	NA	29.93	1013.5
03:35 PM PDT	10.4	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.92	1013.2
03:30 PM PDT	W 9.2	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
03:25 PM PDT	5.7	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
03:20 PM PDT	W 6.9	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
03:10 PM PDT	W 8.1	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
03:05 PM PDT	W 6.9	10.00	Partly Cloudy	--	62.6	55.4	77%	NA	NA	29.94	1013.9
02:50 PM PDT	W 5.7	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.95	1014.2
02:45 PM PDT	W 8.1	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.95	1014.2
02:40 PM PDT	8.1	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
02:35 PM PDT	8.1	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.97	1014.9
02:30 PM PDT	8.1	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
02:25 PM PDT	W 8.1	10.00	Mostly Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
02:10 PM PDT	6.9	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.97	1014.9
02:05 PM PDT	W 8.1	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.97	1014.9
02:00 PM PDT	8.1	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
01:50 PM PDT	W 10.4	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
01:35 PM PDT	W 10.4	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.97	1014.9
01:30 PM PDT	10.4	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.96	1014.6
01:20 PM PDT	9.2	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.97	1014.9
01:15 PM PDT	8.1	10.00	Cloudy	--	60.8	53.6	77%	NA	NA	29.97	1014.9
01:00 PM PDT	W 11.5	10.00	Cloudy	--	62.6	55.4	77%	NA	NA	29.97	1014.9
12:50 PM PDT	W 13.8	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.97	1014.9
12:40 PM PDT	W 12.7	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
12:35 PM PDT	W 12.7	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
12:25 PM PDT	W 12.7	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
12:20 PM PDT	W 11.5	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
12:05 PM PDT	9.2	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.99	1015.6
12:00 PM PDT	10.4 G 17.3	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.99	1015.6
11:50 AM PDT	9.2	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:45 AM PDT	W 11.5	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:40 AM PDT	9.2	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:30 AM PDT	8.1	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:25 AM PDT	9.2	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:20 AM PDT	SW 6.9	10.00	Cloudy	--	60.8	55.4	82%	NA	NA	29.98	1015.2
11:10 AM PDT	W 8.1	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2
11:05 AM PDT	0.0	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2
11:00 AM PDT	W 5.7	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2
10:50 AM PDT	SW 4.6	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2
10:35 AM PDT	W 4.6	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2
10:30 AM PDT	W 5.7	10.00	Cloudy	--	59.0	55.4	88%	NA	NA	29.98	1015.2