Naval Academy MD
04/21/2026 04:00 AM
39°F
TEMPERATURE
Winds 8 mph NE
Areas Of Frost
Areas of frost. Clear, with a low around 36. Northeast wind around 8 mph.

Alerts

You have (1) alert(s). Tap to see details.

Freeze Warning issued April 21 at 1:31AM EDT until April 21 at 10:00AM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Likely Moderate
Status Urgency Category
Actual Expected Met
Effective Ends Expires
04/21/2026 01:31 AM 04/21/2026 10:00 AM 04/21/2026 09:45 AM
* WHAT...Sub-freezing temperatures as low as 29 expected, especially
in outlying areas away from larger bodies of water.

* WHERE...Portions of DC, central, northern, and southern Maryland,
and central and northern Virginia.

* WHEN...Until 10 AM EDT this morning.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
                                            
Moonrise
10:15 AM
Moonset
01:15 AM
Sunrise
06:20 AM
Moon Phase
Waxing crescent
Sunset
07:48 PM

Hourly Forecast

Tue, 04:00 AM

Areas Of Frost
Winds: 8 mph NE
39°

Tue, 05:00 AM

Areas Of Frost
Winds: 6 mph NE
39°

Tue, 06:00 AM

Areas Of Frost
Winds: 6 mph NE
38°

Tue, 07:00 AM

Areas Of Frost
Winds: 5 mph NE
39°

Tue, 08:00 AM

Areas Of Frost
Winds: 5 mph NE
41°

Tue, 09:00 AM

Areas Of Frost
Winds: 5 mph NE
44°

Tue, 10:00 AM

Sunny
Winds: 5 mph E
47°

Tue, 11:00 AM

Sunny
Winds: 6 mph E
49°

Tue, 12:00 PM

Sunny
Winds: 7 mph SE
50°

Tue, 01:00 PM

Sunny
Winds: 7 mph SE
53°

Tue, 02:00 PM

Sunny
Winds: 8 mph SE
53°

Tue, 03:00 PM

Sunny
Winds: 9 mph SE
55°

Tue, 04:00 PM

Sunny
Winds: 9 mph S
56°

Tue, 05:00 PM

Sunny
Winds: 10 mph S
56°

Tue, 06:00 PM

Mostly Clear
Winds: 10 mph S
56°

Tue, 07:00 PM

Mostly Clear
Winds: 10 mph S
55°

Tue, 08:00 PM

Partly Cloudy
Winds: 10 mph S
54°

Tue, 09:00 PM

Partly Cloudy
Winds: 10 mph S
52°

Tue, 10:00 PM

Partly Cloudy
Winds: 10 mph S
53°

Tue, 11:00 PM

Partly Cloudy
Winds: 10 mph S
51°

Wed, 12:00 AM

Mostly Cloudy
Winds: 10 mph S
51°

Wed, 01:00 AM

Mostly Cloudy
Winds: 10 mph S
51°

Wed, 02:00 AM

Mostly Cloudy
Winds: 10 mph S
52°

Wed, 03:00 AM

Mostly Cloudy
Winds: 10 mph S
52°
Winds: 8 mph NE
Areas of frost. Clear, with a low around 36. Northeast wind around 8 mph.
Winds: 5 to 10 mph E
Areas of frost before 10am. Sunny, with a high near 58. East wind 5 to 10 mph.
Winds: 10 mph S
Mostly cloudy, with a low around 51. South wind around 10 mph, with gusts as high as 20 mph.
Winds: 6 to 9 mph SW
Rain showers likely after 7am. Mostly cloudy, with a high near 70. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Winds: 5 mph NW
Rain showers likely before 8pm. Partly cloudy, with a low around 54. Northwest wind around 5 mph. Chance of precipitation is 60%.
Winds: 5 mph NW
Sunny, with a high near 76.
Winds: 3 mph NW
Partly cloudy, with a low around 56.
Winds: 6 mph NE
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Winds: 6 mph E
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Winds: 6 to 10 mph E
Rain showers likely. Partly sunny, with a high near 64. Chance of precipitation is 60%.
Winds: 7 to 10 mph NE
Rain showers likely. Mostly cloudy, with a low around 51. Chance of precipitation is 70%.
Winds: 10 mph NE
Rain showers likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Winds: 6 to 9 mph NE
A chance of rain showers. Partly cloudy, with a low around 48. Chance of precipitation is 30%.
Winds: 8 mph E
A slight chance of rain showers. Mostly sunny, with a high near 67.

Coastal Waters Forecast

National Weather Service Baltimore MD/Washington DC

FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY.

Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. Waves flat where waters are iced over. High pressure will build in today. A weak cold front looks to drop in from the north Wednesday, then cross the Mid-Atlantic by Thursday. Small Craft Advisories may be needed Wednesday in a south to southwest flow. Additional Small Craft Advisories are possible later this week and weekend as multiple fronts and waves of low pressure traverse the region.

OVERNIGHT
N winds 5 kt Waves less than 1 ft
TUE
S winds around 5 kt Waves 1 ft
TUE NIGHT
S winds 5 to 10 kt Waves 1 ft
WED
SW winds 5 to 10 kt Waves 1 ft Showers likely
WED NIGHT
NW winds around 5 kt Waves 1 ft
THU
NW winds around 5 kt Waves 1 ft
THU NIGHT
NW winds around 5 kt Waves 1 ft or less
FRI
E winds around 5 kt Waves 1 ft A chance of showers through the night
SAT
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning Showers likely
Reporting time 02:26 AM EDT Tue Apr 21 2026
OVERNIGHT
N winds 10 kt Waves 1 ft
TUE
E winds around 5 kt
TUE NIGHT
S winds 10 to 15 kt Waves 1 ft
WED
SW winds 10 to 15 kt Waves 1 ft Showers likely
WED NIGHT
W winds around 5 kt Waves 1 ft
THU
NW winds around 5 kt Waves 1 ft
THU NIGHT
S winds around 5 kt Waves 1 ft or less
FRI
E winds around 5 kt Waves 1 ft A chance of showers through the night
SAT
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning Showers likely
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
OVERNIGHT
NE winds 10 kt Waves 1 ft
TUE
N winds 5 kt
TUE NIGHT
S winds 5 to 10 kt Waves 1 ft
WED
SW winds 5 to 10 kt Waves 1 ft Showers likely
WED NIGHT
NW winds around 5 kt Waves 1 ft or less
THU
NW winds around 5 kt Waves 1 ft
THU NIGHT
NW winds around 5 kt Waves 1 ft or less
FRI
E winds around 5 kt Waves 1 ft or less A chance of showers through the night
SAT
E winds 10 to 15 kt Waves 1 ft A chance of showers in the morning, then showers likely
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS MORNING
SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 02:26 AM EDT Tue Apr 21 2026
Oilrig
NWS
Buoy
Fixed Station
USGS
Ship
Other