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 >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Rochester, Greater Rochester International Airport (KROC)

Lat: 43.12°NLon: 77.68°WElev: 558ft.

A Few Clouds

9°F

-13°C

Humidity	64%
Wind Speed	SW 9 mph
Barometer	30.27 in (1026.5 mb)
Dewpoint	-1°F (-18°C)
Visibility	10.00 mi
Wind Chill	-4°F (-20°C)
Last update	8 Dec 11:54 pm EST

More Information:

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

Extended Forecast for

Mendon NY

Overnight
Low: 8 °F
Mostly Clear
Tuesday
High: 30 °F
Partly Sunny
then Chance
Snow
Tuesday Night
Low: 26 °F
Mostly Cloudy
then Chance
Snow
Wednesday
High: 40 °F
Rain/Snow
Wednesday Night
Low: 21 °F
Rain/Snow
then Snow
Showers
Likely
Thursday
High: 29 °F
Chance Snow
Showers
Thursday Night
Low: 20 °F
Chance Snow
Showers
Friday
High: 31 °F
Mostly Cloudy
then Chance
Snow Showers
Friday Night
Low: 20 °F
Snow Showers
Likely

Detailed Forecast

Overnight

Mostly clear, with a low around 8. South wind around 5 mph.

Tuesday

A chance of snow after 2pm. Increasing clouds, with a high near 30. South wind 6 to 13 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

Tuesday Night

A chance of snow, mainly after 4am. Mostly cloudy, with a low around 26. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Wednesday

Rain and snow before 1pm, then rain between 1pm and 4pm, then rain and snow after 4pm. High near 40. Southwest wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday Night

Snow showers, possibly mixed with rain, becoming all snow after 10pm. Low around 21. West wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Thursday

A chance of snow showers. Mostly cloudy, with a high near 29. West wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Thursday Night

A chance of snow showers. Mostly cloudy, with a low around 20. West wind around 10 mph. Chance of precipitation is 40%.

Friday

A chance of snow showers after 1pm. Mostly cloudy, with a high near 31. West wind around 10 mph. Chance of precipitation is 30%.

Friday Night

Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

Saturday

Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 60%.

Saturday Night

Snow showers likely. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.