Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fair

57°F

14°C

Humidity	77%
Wind Speed	SW 6 mph
Barometer	29.77 in
Dewpoint	50°F (10°C)
Visibility	10.00 mi
Last update	17 Jun 8:55 am EDT

More Information:

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

Extended Forecast for

Portville NY

Today
High: 74 °F
Increasing
Clouds
Tonight
Low: 56 °F
Showers
Likely then
Showers
Thursday
High: 76 °F
Showers
Thursday Night
Low: 52 °F
Showers
Likely then
Slight Chance
Showers
Juneteenth
High: 72 °F
Mostly Sunny
Friday Night
Low: 49 °F
Mostly Clear
Saturday
High: 70 °F
Sunny
Saturday Night
Low: 49 °F
Mostly Clear
Sunday
High: 73 °F
Mostly Sunny

Detailed Forecast

Today

Increasing clouds, with a high near 74. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

Tonight

Showers likely, then showers and possibly a thunderstorm after 2am. Low around 56. Light south wind increasing to 11 to 16 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8am. High near 76. West wind 13 to 15 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely, mainly before 8pm. Mostly cloudy, with a low around 52. West wind 5 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Juneteenth

Mostly sunny, with a high near 72. West wind 7 to 13 mph, with gusts as high as 25 mph.

Friday Night

Mostly clear, with a low around 49. West wind 3 to 8 mph. Winds could gust as high as 20 mph.

Saturday

Sunny, with a high near 70. West wind 9 to 11 mph, with gusts as high as 24 mph.

Saturday Night

Mostly clear, with a low around 49. West wind 3 to 8 mph.

Sunday

Mostly sunny, with a high near 73.

Sunday Night

Showers likely, mainly after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.