Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 1, 12:00 PM EDT until July 3, 08:00 PM EDT

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Partly Cloudy

84°F

29°C

Humidity	61%
Wind Speed	W 9 mph
Barometer	30.15 in (1019.2 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	30 Jun 1:54 pm EDT

More Information:

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

Extended Forecast for

Geistown PA

Heat Advisory July 1, 12:00pm until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

This Afternoon
High: 88 °F
Mostly Sunny
Tonight
Low: 70 °F
Partly Cloudy
Wednesday
High: 90 °F
Mostly Sunny
Wednesday Night
Low: 71 °F
Mostly Clear
Thursday
High: 92 °F
Hot
Thursday Night
Low: 72 °F
Mostly Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 69 °F
Partly Cloudy
Independence Day
High: 87 °F
Mostly Sunny
then Showers
Likely

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 88. Southwest wind around 7 mph.

Tonight

Partly cloudy, with a low around 70. South wind 3 to 5 mph.

Wednesday

Mostly sunny, with a high near 90. West wind 5 to 8 mph.

Wednesday Night

Mostly clear, with a low around 71. West wind around 5 mph becoming calm in the evening.

Thursday

Sunny and hot, with a high near 92. Calm wind becoming west 5 to 8 mph in the afternoon.

Thursday Night

Mostly clear, with a low around 72.

Friday

Sunny, with a high near 91.

Friday Night

Partly cloudy, with a low around 69.

Independence Day

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 60%.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Sunday

A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Sunday Night

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

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.