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June 30, 2026 Microbursts and Tornado

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fair

72°F

22°C

Humidity	83%
Wind Speed	Calm
Barometer	30.12 in
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	3 Jul 5:15 am EDT

More Information:

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

Extended Forecast for

Portville NY

Heat Advisory July 3, 05:22am until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 3, 05:22am until July 3, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Today
High: 93 °F
Sunny then
Chance
T-storms
Tonight
Low: 68 °F
Chance
T-storms then
Chance
Showers
Independence Day
High: 86 °F
Chance
T-storms then
Showers
Likely
Saturday Night
Low: 63 °F
Showers
Likely
Sunday
High: 83 °F
Showers
Sunday Night
Low: 62 °F
Showers
Monday
High: 81 °F
Showers
Monday Night
Low: 61 °F
Showers then
Chance
T-storms

Detailed Forecast

Today

A chance of showers and thunderstorms, mainly after 2pm. Increasing clouds and hot, with a high near 93. Heat index values as high as 97. Light and variable wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 68. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Independence Day

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers and possibly a thunderstorm. High near 83. Light southeast wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm. Low around 62. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Monday

Showers likely, then showers and possibly a thunderstorm after 2pm. High near 81. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%.

Monday Night

Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Low around 61. Southeast wind 3 to 5 mph. Chance of precipitation is 80%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.

Tuesday Night

A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

Wednesday

Partly sunny, with a high near 84.

Wednesday Night

Partly cloudy, with a low around 60.

Thursday

Mostly sunny, with a high near 86.