Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Mostly Cloudy

66°F

19°C

Humidity	78%
Wind Speed	Calm
Barometer	30.11 in
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Last update	9 Aug 10:15 pm EDT

More Information:

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

Extended Forecast for

Delevan NY

Tonight
Low: 62 °F
Partly Cloudy
then Chance
Showers
Monday
High: 77 °F
Showers then
Chance
T-storms
Monday Night
Low: 59 °F
Chance
Showers
Tuesday
High: 77 °F
Mostly Sunny
Tuesday Night
Low: 56 °F
Slight Chance
Showers
Wednesday
High: 78 °F
Mostly Sunny
then Chance
T-storms
Wednesday Night
Low: 57 °F
Showers
Likely
Thursday
High: 74 °F
Chance
Showers
Thursday Night
Low: 51 °F
Partly Cloudy

Detailed Forecast

Tonight

A chance of showers, with thunderstorms also possible after 5am. Increasing clouds, with a low around 62. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday

Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 77. West wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. West wind 3 to 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

Mostly sunny, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.

Tuesday Night

A slight chance of showers before 2am. Partly cloudy, with a low around 56. Calm wind. Chance of precipitation is 20%.

Wednesday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Light south wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%.

Thursday

A chance of showers. Partly sunny, with a high near 74. West wind 3 to 8 mph. Chance of precipitation is 30%.

Thursday Night

Partly cloudy, with a low around 51.

Friday

Sunny, with a high near 72.

Friday Night

Mostly clear, with a low around 51.

Saturday

Mostly sunny, with a high near 73.

Saturday Night

Partly cloudy, with a low around 53.