Castro Valley Weather ForecastCastro Valley Weather Forecast

Castro Valley (California) forecast issued: 10 pm Fri 09 May 2025 local time

| Updates in: hr min s

| (Update imminent)

Issued: 10 pm Fri 09 May 2025 local time

| Updates in: hr min s

| (Update imminent)

Castro Valley Weather Forecast. Providing a local hourly Castro Valley weather forecast of rain, sun, wind, humidity and temperature.

The Long-range 12 day forecast also includes detail for Castro Valley weather today. Live weather reports from Castro Valley weather stations and weather warnings that include risk of thunder, high UV index and forecast gales. See the links below the 12-day Castro Valley weather forecast table for other cities and towns nearby along with weather conditions for local outdoor activities.

Castro Valley is 50 m above sea level and located at 37.69° N 122.09° W. Castro Valley has a population of 61388. Local time in Castro Valley is PDT.

	Castro Valley Weather Today (1–3 days) Mostly dry. Warm (max 23°C on Sat afternoon, min 11°C on Sat night). Wind will be generally light.									Castro Valley Weather (4–7 days) Mostly dry. Warm (max 20°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.									10 Day Castro Valley Weather (7–10 days) Mostly dry. Warm (max 25°C on Sun afternoon, min 10°C on Thu night). Wind will be generally light.									Castro Valley Weather Next Week (10–12 days) Mostly dry. Warm (max 25°C on Mon afternoon, min 8°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the W by Wed afternoon).
	Fri 09	Saturday 10			Sunday 11			Monday 12			Tuesday 13			Wednesday 14			Thursday 15			Friday 16			Saturday 17			Sunday 18			Monday 19			Tuesday 20			Wed 21
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM

Wind km/h	SW	W	W	SW	W	W	S	WSW	W	W	WSW	W	SSW	SW	W	S	WNW	W	SSW	SW	WSW	SW	NW	W	SW	NW	W	SSW	W	W	SW	WSW	WSW	SSW	W	W
	clear	clear	clear	clear	clear	clear	some clouds	rain shwrs	rain shwrs	some clouds	rain shwrs	clear	some clouds	clear	clear	some clouds	clear	clear	some clouds	some clouds	clear	some clouds	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
See all maps
Rain mm	-	-	-	-	-	-	-	0.8	0.1	-	0.1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
High	20	21	23	15	16	17	13	14	16	12	13	15	12	15	18	12	17	20	13	16	19	14	18	22	15	23	25	18	23	25	14	17	17	12	14	15
Low	14	15	21	11	12	15	11	13	16	11	11	15	10	11	15	10	12	18	10	11	18	12	13	20	12	16	24	14	17	21	10	12	16	8	10	14
Feels°C	18	19	19	12	12	12	10	11	12	10	10	11	10	12	14	10	16	16	11	14	16	12	16	17	14	20	22	16	21	21	12	13	12	9	9	7
Humid Humid %	52	33	34	73	58	48	81	61	52	88	70	58	89	58	63	88	53	52	83	59	53	91	55	42	80	32	32	60	36	44	84	44	52	87	57	62
UV	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	-	6:03	-	-	6:01	-	-	6:01	-	-	6:00	-	-	6:00	-	-	5:58	-	-	5:58	-	-	5:56	-	-	5:56	-	-	5:56	-	-	5:54	-	-	5:54	-
	-	-	8:06	-	-	8:07	-	-	8:07	-	-	8:08	-	-	8:09	-	-	8:09	-	-	8:10	-	-	8:12	-	-	8:13	-	-	8:14	-	-	8:15	-	-	8:15

	Fri 09		Saturday 10								Sunday 11								Monday 12								Tuesday 13								Wednesday 14								Thursday 15								Friday 16
	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM

Wind km/h	W	SW	SW	WSW	WSW	W	W	W	WSW	SW	SW	SSW	SW	W	W	W	W	SW	S	SSE	SSW	WSW	W	W	W	WSW	W	W	W	WSW	W	W	WSW	SSW	SSW	SSW	S	SW	W	W	SW	SSW	S	S	SSE	WNW	WNW	W	WSW	SSW	SSW	S	SSW	SW	W
	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	cloudy	clear	clear	clear	clear	clear	clear	clear	clear	cloudy	rain shwrs	light rain	rain shwrs	clear	clear	some clouds	cloudy	cloudy	some clouds	rain shwrs	clear	clear	clear	clear	clear	some clouds	some clouds	clear	clear	some clouds	some clouds	cloudy	some clouds	some clouds	clear	clear	clear	clear	some clouds	cloudy	cloudy	some clouds	some clouds	clear	clear
Rain mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.5	0.3	0.1	-	-	-	-	-	-	0.1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp°C	20	16	15	14	15	21	23	21	15	12	12	11	12	16	17	15	13	11	11	11	13	14	16	16	12	11	11	11	11	13	15	15	12	10	10	10	11	15	18	15	12	11	11	10	12	17	20	18	13	11	10	10	11	16	19
Feels °C	18	14	13	12	13	19	19	17	12	9	9	9	11	12	12	10	10	9	9	8	10	11	12	11	10	9	8	8	9	10	11	11	10	8	8	8	8	12	14	11	10	9	9	9	10	16	16	15	11	8	8	8	9	14	16
Humid Humid %	35	48	52	57	58	33	30	34	54	68	73	83	78	58	44	48	71	78	81	75	75	61	47	52	76	89	88	86	80	70	55	58	76	86	89	86	80	58	46	63	81	90	88	88	79	53	45	52	73	82	83	87	82	59	46
UV	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	-	-	-	-	6:03	-	-	-	-	-	-	-	6:01	-	-	-	-	-	-	-	6:01	-	-	-	-	-	-	-	6:00	-	-	-	-	-	-	-	6:00	-	-	-	-	-	-	-	5:58	-	-	-	-	-	-	-	5:58	-	-
	8:05	-	-	-	-	-	-	-	8:06	-	-	-	-	-	-	-	8:07	-	-	-	-	-	-	-	8:07	-	-	-	-	-	-	-	8:08	-	-	-	-	-	-	-	8:09	-	-	-	-	-	-	-	8:09	-	-	-	-	-	-

	Friday 09						Saturday 10
	6 PM	7 PM	8 PM	9 PM	10 PM	11 PM	0 AM	1 AM	2 AM	3 AM	4 AM	5 AM	6 AM	7 AM	8 AM	9 AM	10 AM	11 AM	12 PM	1 PM	2 PM	3 PM	4 PM	5 PM	6 PM	7 PM	8 PM	9 PM	10 PM	11 PM

Wind km/h	WNW	W	W	W	WSW	SW	SW	SW	SW	SW	SW	WSW	WSW	SW	WSW	WSW	W	W	W	W	W	W	W	W	WSW	WSW	WSW	SW	SW	SW
	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear	clear
Rain mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp°C	25	23	20	18	17	16	15	15	14	14	14	14	13	13	15	17	20	21	22	23	23	23	22	20	19	18	15	13	12	12
Feels °C	22	20	18	16	14	14	13	13	12	12	12	12	11	12	13	15	17	19	19	19	19	19	18	17	16	14	12	10	10	9
Humid Humid %	24	30	35	41	46	48	50	51	52	53	55	57	61	64	58	48	39	33	31	30	30	30	32	34	37	42	54	62	65	68
UV	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	-	-	-	-	-	-	-	-	-	-	-	-	-	6:03	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
	-	-	8:06	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	8:07	-	-	-

Castro Valley Weather Today

(1–3 days):

Mostly dry. Warm (max 23°C on Sat afternoon, min 11°C on Sat night). Wind will be generally light.

Castro Valley Weather

(4–7 days):

Mostly dry. Warm (max 20°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.

10 Day Castro Valley Weather

(7–10 days):

Mostly dry. Warm (max 25°C on Sun afternoon, min 10°C on Thu night). Wind will be generally light.

Castro Valley Weather Next Week

(10–12 days):

Mostly dry. Warm (max 25°C on Mon afternoon, min 8°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the W by Wed afternoon).

Live weather stations near Castro Valley

Castro Valley Live Weather Today: Recent reports from weather stations near Castro Valley

Weather Station	Temp.	Weather	Wind	Cloud Visibility Cloud / Visibility
Hayward Airport 3 km SW 218m alt. 2 hours ago	15.0° C	Clear	Wind obs. (9 kph from 300 degs) was rejected .	16 km
Mount Eden wx 4 km SSW 12m alt. 1 hour ago	12.0° C	Dry	km/h Calm (0 km/h at E°).
Wilmington 7 km S 86m alt. 1 hour ago	9.0° C	Dry	km/h Calm (0 km/h at N°).
Oakland Airport 7 km W 218m alt. 2 hours ago	13.3° C	-	km/h Light winds from the WNW (13 km/h at WNW°).	16 km Low: few
SHIP8657 12 km W 3m alt. 3 hours ago	11.6° C
Fremont 13 km SSE 14m alt. 54 minutes ago	11.0° C	Dry	Wind obs. (8 kph from 247 degs) was rejected .
BUOY-AAMC1 13 km WNW 3m alt. 52 minutes ago	-		km/h Calm (4 km/h at W°).
BUOY-LNDC1 13 km NW 3m alt. 52 minutes ago	-		km/h (0 km/h at °)
BUOY-RTYC1 14 km SSW 3m alt. 52 minutes ago	-		km/h Light winds from the NW (8 km/h at NW°).
San Carlos Airport 15 km SW 393m alt. 1 hour ago	14.0° C	Clear	km/h Light winds from the NNW (6 km/h at NNW°).	16 km

* NOTE: not all weather stations near Castro Valley update at the same time and we only show reports from the nearest stations that are deemed current. Weather reports submitted by any ship (SYNOP) that is close to Castro Valley within an acceptable time window are also included.Read More

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Weather forecast for places near Castro Valley:

Place Name	1–3 Day Summary	4–6 Day Summary	7–9 Day Summary	10–12 Day Summary
San Leandro 7 km	Mostly dry.	Mostly dry.	Mostly dry.	Mostly dry.
Union City 12 km	Mostly dry.	Mostly dry.	Mostly dry.	Mostly dry.
Alameda 15 km	Some drizzle, heaviest during Mon morning.	Mostly dry.	Mostly dry.	Mostly dry.
Dublin 17 km	Mostly dry.	Mostly dry.	Mostly dry.	Mostly dry.

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