Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

62°F

17°C

Humidity	48%
Wind Speed	N 7 mph
Barometer	29.94 in (1014.8 mb)
Dewpoint	42°F (6°C)
Visibility	10.00 mi
Last update	21 Mar 12:53 pm EDT

More Information:

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

Extended Forecast for

3 Miles SSW Mercersburg PA

This Afternoon
High: 63 °F
Mostly Sunny
Tonight
Low: 46 °F
Partly Cloudy
Sunday
High: 82 °F
Mostly Sunny
Sunday Night
Low: 46 °F
Severe
Thunderstorms
then Showers
Monday
High: 53 °F
Showers then
Sunny
Monday Night
Low: 31 °F
Mostly Clear
Tuesday
High: 50 °F
Sunny
Tuesday Night
Low: 35 °F
Mostly Cloudy
Wednesday
High: 58 °F
Partly Sunny

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 63. Light northeast wind.

Tonight

Partly cloudy, with a low around 46. Light southeast wind.

Sunday

Mostly sunny, with a high near 82. Light south wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

Sunday Night

Showers and thunderstorms likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Some of the storms could be severe. Low around 46. North wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers before 8am. High near 53. Northwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday Night

Mostly clear, with a low around 31.

Tuesday

Sunny, with a high near 50.

Tuesday Night

Mostly cloudy, with a low around 35.

Wednesday

Partly sunny, with a high near 58.

Wednesday Night

Mostly cloudy, with a low around 40.

Thursday

A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 30%.