Point Forecast: Castro Valley CA  37.69N 122.07W (Elev. 197 ft)	Last Update: 2:49 am PDT Jun 28, 2024

[hide menu]

Weather Elements Weather/Precipitation Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Lightning Activity Level Trans. Wind  ktmphkm/hm/s 20ft Wind  ktmphkm/hm/s

48-Hour Period Starting: 10am Fri, Jun 28 202411am Fri, Jun 28 202412pm Fri, Jun 28 20241pm Fri, Jun 28 20242pm Fri, Jun 28 20243pm Fri, Jun 28 20244pm Fri, Jun 28 20245pm Fri, Jun 28 20246pm Fri, Jun 28 20247pm Fri, Jun 28 20248pm Fri, Jun 28 20249pm Fri, Jun 28 202410pm Fri, Jun 28 202411pm Fri, Jun 28 202412am Sat, Jun 29 20241am Sat, Jun 29 20242am Sat, Jun 29 20243am Sat, Jun 29 20244am Sat, Jun 29 20245am Sat, Jun 29 20246am Sat, Jun 29 20247am Sat, Jun 29 20248am Sat, Jun 29 20249am Sat, Jun 29 202410am Sat, Jun 29 202411am Sat, Jun 29 202412pm Sat, Jun 29 20241pm Sat, Jun 29 20242pm Sat, Jun 29 20243pm Sat, Jun 29 20244pm Sat, Jun 29 20245pm Sat, Jun 29 20246pm Sat, Jun 29 20247pm Sat, Jun 29 20248pm Sat, Jun 29 20249pm Sat, Jun 29 202410pm Sat, Jun 29 202411pm Sat, Jun 29 202412am Sun, Jun 30 20241am Sun, Jun 30 20242am Sun, Jun 30 20243am Sun, Jun 30 20244am Sun, Jun 30 20245am Sun, Jun 30 20246am Sun, Jun 30 20247am Sun, Jun 30 20248am Sun, Jun 30 20249am Sun, Jun 30 202410am Sun, Jun 30 202411am Sun, Jun 30 202412pm Sun, Jun 30 20241pm Sun, Jun 30 20242pm Sun, Jun 30 20243pm Sun, Jun 30 20244pm Sun, Jun 30 20245pm Sun, Jun 30 20246pm Sun, Jun 30 20247pm Sun, Jun 30 20248pm Sun, Jun 30 20249pm Sun, Jun 30 202410pm Sun, Jun 30 202411pm Sun, Jun 30 202412am Mon, Jul 1 20241am Mon, Jul 1 20242am Mon, Jul 1 20243am Mon, Jul 1 20244am Mon, Jul 1 20245am Mon, Jul 1 20246am Mon, Jul 1 20247am Mon, Jul 1 20248am Mon, Jul 1 20249am Mon, Jul 1 202410am Mon, Jul 1 202411am Mon, Jul 1 202412pm Mon, Jul 1 20241pm Mon, Jul 1 20242pm Mon, Jul 1 20243pm Mon, Jul 1 20244pm Mon, Jul 1 20245pm Mon, Jul 1 20246pm Mon, Jul 1 20247pm Mon, Jul 1 20248pm Mon, Jul 1 20249pm Mon, Jul 1 202410pm Mon, Jul 1 202411pm Mon, Jul 1 202412am Tue, Jul 2 20241am Tue, Jul 2 20242am Tue, Jul 2 20243am Tue, Jul 2 20244am Tue, Jul 2 20245am Tue, Jul 2 20246am Tue, Jul 2 20247am Tue, Jul 2 20248am Tue, Jul 2 20249am Tue, Jul 2 202410am Tue, Jul 2 202411am Tue, Jul 2 202412pm Tue, Jul 2 20241pm Tue, Jul 2 20242pm Tue, Jul 2 20243pm Tue, Jul 2 20244pm Tue, Jul 2 20245pm Tue, Jul 2 20246pm Tue, Jul 2 20247pm Tue, Jul 2 20248pm Tue, Jul 2 20249pm Tue, Jul 2 2024

Date	06/28														06/29
Hour (PDT)	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09
Temperature (°F)	68	72	76	78	79	80	78	77	74	69	65	62	60	59	59	58	57	57	56	56	56	58	61	65
Dewpoint (°F)	54	55	56	55	56	56	55	55	56	54	53	52	52	52	52	52	51	51	51	51	51	52	53	55
Heat Index (°F)			76	78	80	80	78	77
Surface Wind (mph)	5	6	6	8	9	10	10	10	9	8	7	6	6	6	6	5	5	3	3	3	3	3	3	5
Wind Dir	SW	WSW	W	W	W	W	W	W	W	WSW	WSW	WSW	WSW	SW	WSW	WSW	W	W	W	SW	W	WSW	SW	SW
Gust
Sky Cover (%)	5	4	2	1	1	0	1	1	1	1	6	7	14	9	13	20	20	21	15	19	22	15	13	10
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	60	55	49	45	45	45	46	47	52	58	66	71	76	76	77	80	79	81	82	83	83	82	75	70
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date															06/30
Hour (PDT)	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09
Temperature (°F)	69	72	76	79	81	82	81	80	77	74	70	68	65	63	62	61	60	59	58	58	58	60	62	65
Dewpoint (°F)	56	56	57	57	57	57	56	56	55	54	54	53	53	53	52	52	52	52	52	52	53	53	54	56
Heat Index (°F)			76	79	81	81	81	80	77
Surface Wind (mph)	5	6	7	8	9	9	10	10	9	8	7	7	7	6	6	5	5	5	3	3	3	5	5	5
Wind Dir	WSW	WSW	W	W	W	W	W	W	W	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW
Gust
Sky Cover (%)	7	3	2	2	1	1	1	1	4	7	10	12	13	15	16	16	17	18	20	21	21	21	21	16
Precipitation Potential (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Relative Humidity (%)	63	57	52	47	44	43	42	44	46	50	55	60	65	69	71	73	74	77	79	80	81	79	76	71
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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