Hazardous Spring Weather Shifts to the Eastern and Northwest U.S. Wednesday

Isolated to scattered severe thunderstorms are expected Wednesday from the ArkLaTex and Lower Mississippi Valley northeastward through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat from east Texas into Upstate New York. A moderate atmospheric river will bring heavy snow and high winds to the Northwest U.S. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

N/A

Humidity	NA
Wind Speed	Calm
Barometer	29.91 in
Dewpoint	N/A
Visibility	10.00 mi
Last update	11 Mar 3:15 am EDT

More Information:

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

Extended Forecast for

Portville NY

Overnight
Low: 54 °F
Mostly Cloudy
Wednesday
High: 67 °F
Showers
Wednesday Night
Low: 26 °F
Showers then
Chance
Rain/Snow
Thursday
High: 36 °F
Decreasing
Clouds
Thursday Night
Low: 25 °F
Partly Cloudy
Friday
High: 44 °F
Rain/Snow
Likely
Friday Night
Low: 23 °F
Chance
Rain/Snow
then Chance
Snow Showers
Saturday
High: 37 °F
Partly Sunny
Saturday Night
Low: 24 °F
Mostly Cloudy
then Chance
Snow Showers

Detailed Forecast

Overnight

Mostly cloudy, with a low around 54. East wind around 5 mph.

Wednesday

Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 67. South wind 8 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday Night

Rain showers before 3am, then a chance of snow showers. Some thunder is also possible. Low around 26. Southwest wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday

Cloudy, then gradually becoming mostly sunny, with a high near 36. West wind around 14 mph, with gusts as high as 30 mph.

Thursday Night

Partly cloudy, with a low around 25. West wind 5 to 7 mph becoming light and variable after midnight.

Friday

Snow likely before 11am, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 44. South wind 10 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night

A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Mostly cloudy, with a low around 23. West wind around 14 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

Saturday

Partly sunny, with a high near 37. West wind 11 to 13 mph, with gusts as high as 26 mph.

Saturday Night

A chance of snow showers after 2am. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.

Sunday

A chance of snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.

Sunday Night

Showers. Low around 31. Breezy. Chance of precipitation is 80%.

Monday

Rain and snow showers. High near 45. Chance of precipitation is 80%.

Monday Night

A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.