Dangerous Heat Wave Continues; Severe Thunderstorms and Heavy Rain from the Central Plains to the Midwest

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorm are expected from the northern/central Plains to the Mid-Atlantic. Isolated slash flooding is possible from the central Plains to the Upper Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

York, York Airport (KTHV)

Lat: 39.92°NLon: 76.88°WElev: 479ft.

Fair

82°F

28°C

Humidity	77%
Wind Speed	Calm
Barometer	30.00 in (1015.5 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	3 Jul 10:53 pm EDT

More Information:

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

Extended Forecast for

4 Miles S Wellsville PA

Extreme Heat Warning July 3, 11:40pm until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 3, 11:40pm until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Tonight
Low: 75 °F
Slight Chance
T-storms
Independence Day
High: 98 °F
Hot
Saturday Night
Low: 71 °F
Chance
T-storms then
Showers
Likely
Sunday
High: 92 °F
Partly Sunny
then Showers
Sunday Night
Low: 67 °F
Showers
Monday
High: 85 °F
Chance
Showers then
T-storms
Monday Night
Low: 66 °F
T-storms then
Showers
Likely
Tuesday
High: 83 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 75. Light northwest wind. Chance of precipitation is 20%.

Independence Day

Mostly sunny and hot, with a high near 98. Heat index values as high as 103. Calm wind becoming west 5 to 7 mph in the afternoon.

Saturday Night

Showers and thunderstorms likely before 2am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 71. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

A slight chance of showers before 8am, then showers and possibly a thunderstorm after 2pm. High near 92. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Low around 67. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 85. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 66. Chance of precipitation is 80%.

Tuesday

A chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.

Wednesday

A chance of showers before 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

Wednesday Night

Partly cloudy, with a low around 67.

Thursday

A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.