Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Mountain View, Moffett Field (KNUQ)

Lat: 37.40583°NLon: 122.04806°WElev: 33.0ft.

Overcast

54°F

12°C

Humidity	81%
Wind Speed	S 3 MPH
Barometer	29.8 in (1009.14 mb)
Dewpoint	48°F (9°C)
Visibility	9.00 mi
Last update	12 Apr 01:15 AM PDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Sunnyvale CA

Overnight
Low: 48 °F
Chance
Showers
Sunday
High: 62 °F
Showers
Likely
Sunday Night
Low: 45 °F
Slight Chance
Showers then
Patchy Fog
Monday
High: 65 °F
Patchy Fog
then Sunny
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 66 °F
Mostly Sunny
Tuesday Night
Low: 45 °F
Mostly Clear
Wednesday
High: 66 °F
Mostly Sunny
Wednesday Night
Low: 48 °F
Mostly Cloudy

Detailed Forecast

Overnight

A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. South southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 62. South southeast wind 8 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

A 20 percent chance of showers before 9pm. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 45. West southwest wind around 6 mph becoming calm in the evening.

Monday

Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming northwest 5 to 7 mph in the afternoon.

Monday Night

Mostly clear, with a low around 46. West northwest wind 5 to 10 mph becoming light west after midnight.

Tuesday

Mostly sunny, with a high near 66.

Tuesday Night

Mostly clear, with a low around 45.

Wednesday

Mostly sunny, with a high near 66.

Wednesday Night

Mostly cloudy, with a low around 48.