Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

19°F

-7°C

Humidity	68%
Wind Speed	NW 8 mph
Barometer	30.20 in (1022.8 mb)
Dewpoint	10°F (-12°C)
Visibility	10.00 mi
Wind Chill	9°F (-13°C)
Last update	9 Dec 6:56 am EST

More Information:

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

Extended Forecast for

Hyannis MA

Today
High: 33 °F
Increasing
Clouds
Tonight
Low: 30 °F⇑
Chance Snow
Showers then
Chance
Showers
Wednesday
High: 50 °F
Mostly Cloudy
then Rain
Wednesday Night
Low: 35 °F
Rain Likely
then Chance
Showers
Thursday
High: 38 °F
Partly Sunny
then Mostly
Sunny and
Breezy
Thursday Night
Low: 25 °F
Partly Cloudy
and Breezy
then Partly
Cloudy
Friday
High: 37 °F
Sunny
Friday Night
Low: 27 °F
Partly Cloudy
then Chance
Snow Showers
Saturday
High: 40 °F
Chance
Rain/Snow
then Chance
Showers

Detailed Forecast

Today

Increasing clouds, with a high near 33. Northwest wind 5 to 7 mph becoming southwest in the afternoon.

Tonight

A chance of snow showers before midnight, then a chance of rain showers between midnight and 4am. Cloudy, with a temperature rising to around 38 by 2am. Southwest wind 8 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Wednesday

Rain, mainly after 5pm. High near 50. South wind 11 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night

Rain likely before 10pm, then a chance of showers between 10pm and 3am. Mostly cloudy, with a low around 35. Southwest wind 13 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Thursday

Mostly sunny, with a high near 38. Breezy, with a west wind 15 to 21 mph, with gusts as high as 34 mph.

Thursday Night

Partly cloudy, with a low around 25. Breezy, with a west wind 13 to 20 mph.

Friday

Sunny, with a high near 37. West wind around 15 mph, with gusts as high as 29 mph.

Friday Night

A chance of snow showers after 5am. Partly cloudy, with a low around 27. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Saturday

A chance of snow showers before 8am, then a chance of rain showers. Partly sunny, with a high near 40. West wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

Saturday Night

A chance of snow before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 26. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

Sunday

A chance of rain and snow. Mostly cloudy, with a high near 35. Northwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Sunday Night

A chance of snow showers. Partly cloudy, with a low around 18. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Monday

Mostly sunny, with a high near 31. Northwest wind 11 to 13 mph, with gusts as high as 25 mph.