National Weather Service

News Headlines

Severe Weather of July 18th, 2026

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Overcast

78°F

26°C

Humidity	79%
Wind Speed	S 10 G 16 mph
Barometer	29.77 in (1007.0 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	2 Aug 5:53 pm EDT

More Information:

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

Extended Forecast for

2 Miles NW Williamsburg PA

Flood Watch August 2, 06:27pm until August 3, 02:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 2, 06:27pm until August 3, 02:00am
NOW until 2:00am Mon
Flood Watch
Tonight
Low: 67 °F
Heavy Rain
then Chance
T-storms and
Patchy Fog
Monday
High: 79 °F
Patchy Fog
then Partly
Sunny
Monday Night
Low: 62 °F
Partly Cloudy
Tuesday
High: 81 °F
Partly Sunny
Tuesday Night
Low: 62 °F
Partly Cloudy
Wednesday
High: 84 °F
Partly Sunny
then Chance
Showers
Wednesday Night
Low: 66 °F
Chance
Showers then
Partly Cloudy
Thursday
High: 85 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Tonight

Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers after 3am. Some of the storms could produce heavy rainfall. Patchy fog after 3am. Low around 67. Southeast wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the morning.

Monday Night

Partly cloudy, with a low around 62. Light north wind.

Tuesday

Partly sunny, with a high near 81. Light and variable wind.

Tuesday Night

Partly cloudy, with a low around 62. Calm wind.

Wednesday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. 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 before 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 70%.

Thursday Night

Showers likely before 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Friday

Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 70%.

Friday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Saturday

A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 30%.