Dangerous Heat Wave from the Midwest to East Coast

A large ridge of high pressure extending from the Central to Eastern U.S. will deliver a dangerous summer heat wave through the weekend. Widespread excessive heat warnings and heat advisories already cover the Eastern two-thirds of the country. A number of record highs and overnight warm minimum temperatures are likely. Heat indices will surge past 100 degrees and approach the 110s. Heat Safety! Read More >

Hazardous Weather Conditions

En Español

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Clear

90°F

32°C

Humidity	59%
Wind Speed	W 9 mph
Barometer	29.99 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	19 Jul 10:47 am EDT

More Information:

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

Extended Forecast for

Frederick Municipal Airport MD

Excessive Heat Watch July 20, 11:00am until July 20, 09:00pm

Excessive Heat Watch July 21, 11:00am until July 21, 09:00pm

Excessive Heat Warning until July 19, 09:00pm

Click here for hazard details and duration

Excessive Heat Watch

Excessive Heat Warning

Excessive Heat Warning until July 19, 09:00pm

NOW until
9:00pm Fri

Excessive Heat Warning
Today

Slight Chance
T-storms
High: 98 °F
Tonight

Partly Cloudy
then Patchy
Fog
Low: 76 °F
Saturday

Patchy Fog
then Mostly
Sunny
High: 99 °F
Saturday
Night

Partly Cloudy
Low: 78 °F
Sunday

Chance
T-storms
High: 98 °F
Sunday
Night

Chance
T-storms
Low: 75 °F
Monday

T-storms
Likely
High: 86 °F
Monday
Night

Chance
T-storms
Low: 66 °F

Detailed Forecast

Today

A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 98. Heat index values as high as 107. West wind around 7 mph. Chance of precipitation is 20%.

Tonight

Patchy fog after 2am. Otherwise, partly cloudy, with a low around 76. West wind 3 to 5 mph.

Saturday

Patchy fog before 9am. Otherwise, mostly sunny and hot, with a high near 99. Heat index values as high as 110. West wind 3 to 7 mph.

Saturday Night

Partly cloudy, with a low around 78. West wind around 5 mph becoming calm in the evening.

Sunday

A chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 98. West wind 3 to 7 mph. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.

Monday

Showers and thunderstorms likely after 8am. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

Monday Night

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

Tuesday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.

Tuesday Night

Partly cloudy, with a low around 62.

Wednesday

Mostly sunny, with a high near 84.