Castro Valley, CA Hourly Weather Forecast

Thu, Nov 19, 2026

Thursday

Fri 11/20

High 58°f

47% Precip. / 0.13 in

Cloudy with showers. High 58F. Winds WSW at 5 to 10 mph. Chance of rain 50%.

Thursday night

Fri 11/20

Low 44°f

52% Precip. / 0.08 in

Cloudy with occasional rain showers. Low 44F. Winds NE at 5 to 10 mph. Chance of rain 50%.

Sunrise 6:52 AM

Sunset 4:54 PM

Moonrise 1:51 PM

Moonset 1:22 AM

Waxing Gibbous, 73% visible

Hourly Forecast

12AM

52%

50°

1AM

46%

50°

2AM

45%

49°

3AM

44%

49°

4AM

56%

48°

5AM

55%

48°

6AM

54%

47°

6:52AM

Sunrise

7AM

47%

47°

8AM

46%

49°

9AM

44%

51°

10AM

42%

53°

11AM

41%

54°

12PM

41%

55°

1PM

41%

56°

2PM

41%

57°

3PM

41%

57°

4PM

40%

56°

4:54PM

Sunset

5PM

40%

54°

6PM

41%

53°

7PM

51%

52°

8PM

52%

51°

9PM

53%

50°

10PM

47%

49°

11PM

47%

49°

Time	Conditions	Temp.	Feels Like	Precip	Amount	Cloud Cover	Dew Point	Humidity	Wind	Pressure
12:00 am	Showers	50°F	48°F	52%	0.01in	65%	47°F	88%	6 mph ESE	29.99in
1:00 am	Showers	50°F	47°F	46%	0.01in	62%	46°F	88%	6 mph E	29.98in
2:00 am	Showers	49°F	47°F	45%	0.01in	63%	46°F	88%	6 mph E	29.98in
3:00 am	Showers	49°F	46°F	44%	0.01in	63%	46°F	90%	6 mph E	29.97in
4:00 am	Showers	48°F	46°F	56%	0.01in	64%	46°F	91%	5 mph ESE	29.97in
5:00 am	Showers	48°F	45°F	55%	0.01in	65%	46°F	92%	6 mph E	29.97in
6:00 am	Showers	47°F	45°F	54%	0.01in	64%	46°F	95%	5 mph ESE	29.97in
7:00 am	Showers	47°F	45°F	47%	0.01in	61%	46°F	96%	5 mph ESE	29.97in
8:00 am	Showers	49°F	47°F	46%	0.01in	57%	47°F	93%	5 mph ESE	29.98in
9:00 am	Showers	51°F	49°F	44%	0.01in	56%	48°F	90%	5 mph SSE	29.98in
10:00 am	Showers	53°F	51°F	42%	0.01in	56%	48°F	85%	6 mph SSW	29.98in
11:00 am	Showers	54°F	52°F	41%	0.01in	57%	49°F	82%	7 mph SW	29.97in
12:00 pm	Showers	55°F	53°F	41%	0.01in	59%	48°F	78%	8 mph WSW	29.95in
1:00 pm	Showers	56°F	54°F	41%	0.01in	60%	48°F	74%	8 mph W	29.94in
2:00 pm	Showers	57°F	55°F	41%	0.01in	59%	48°F	72%	8 mph WNW	29.92in
3:00 pm	Showers	57°F	55°F	41%	0.01in	55%	47°F	70%	9 mph WNW	29.91in
4:00 pm	Showers	56°F	54°F	40%	0.02in	54%	48°F	73%	9 mph WNW	29.91in
5:00 pm	Showers	54°F	52°F	40%	0.01in	54%	47°F	77%	8 mph NW	29.91in
6:00 pm	Showers	53°F	51°F	41%	0.01in	55%	47°F	82%	6 mph NNW	29.91in
7:00 pm	Showers	52°F	50°F	51%	0.02in	57%	47°F	84%	5 mph N	29.91in
8:00 pm	Showers	51°F	49°F	52%	0.01in	59%	47°F	85%	5 mph NNE	29.92in
9:00 pm	Showers	50°F	48°F	53%	0.01in	59%	46°F	86%	6 mph NE	29.92in
10:00 pm	Showers	49°F	47°F	47%	0.01in	59%	45°F	86%	5 mph ENE	29.92in
11:00 pm	Showers	49°F	46°F	47%	0.01in	60%	45°F	87%	6 mph NE	29.93in

Additional Conditions

Pressure 29.91 in
Visibility 10 miles
Clouds Partly Cloudy
Dew Point46°F
Humidity 77%
Rainfall 0 in
Snow Depth 0 in

KHWD Station History

Almanac for November 12, 2026

Forecast Average Record
Temperature
High 71°F 66°F 75°F 1995
Low 50°F 48°F 34°F 1948
Rain/Snow Depth
Precipitation 0.01 in 4.8 in -
Snow 0 in 0.1 in -

Almanac for November 13, 2026

Forecast Average Record
Temperature
High 60°F 66°F 77°F
Low 52°F 48°F 33°F

Astronomy

Sun Rise Set
Actual Time 6:45 AM 4:59 PM
Civil Twilight 6:17 AM 5:27 PM
Nautical Twilight 5:46 AM 5:58PM
Astronomical Twilight 5:15 AM 6:29 PM

Length of Visible Light 11h 9m
Length of Day 10h 13m
Tomorrow will be 1 minute 50 seconds shorter

Moon 10:11 AM 7:19 PM
Waxing Crescent11% of the Moon is Illuminated

Nov 17

Waxing Half First Qtr

Nov 24

Full Moon

Nov 30

Waning Half Last Qtr

Dec 8

New Moon

Nearby Weather Stations

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