Tall Timbers, MD
04/21/2026 05:00 AM
42°F
TEMPERATURE
Winds 9 mph NE
Clear
Clear, with a low around 40. Northeast wind around 9 mph.

Alerts

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

Freeze Warning

Moderate
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
10:18 AM
Moonset
01:12 AM
Sunrise
06:22 AM
Moon Phase
Waxing crescent
Sunset
07:47 PM

Hourly Forecast

Tue, 05:00 AM

Clear
Winds: 9 mph NE
42°

Tue, 06:00 AM

Sunny
Winds: 8 mph NE
41°

Tue, 07:00 AM

Sunny
Winds: 7 mph NE
42°

Tue, 08:00 AM

Sunny
Winds: 7 mph NE
43°

Tue, 09:00 AM

Sunny
Winds: 6 mph NE
46°

Tue, 10:00 AM

Sunny
Winds: 5 mph N
47°

Tue, 11:00 AM

Sunny
Winds: 3 mph N
48°

Tue, 12:00 PM

Sunny
Winds: 5 mph SW
50°

Tue, 01:00 PM

Sunny
Winds: 6 mph S
50°

Tue, 02:00 PM

Sunny
Winds: 6 mph S
53°

Tue, 03:00 PM

Sunny
Winds: 6 mph S
54°

Tue, 04:00 PM

Sunny
Winds: 8 mph S
55°

Tue, 05:00 PM

Sunny
Winds: 9 mph SE
56°

Tue, 06:00 PM

Mostly Clear
Winds: 10 mph SE
57°

Tue, 07:00 PM

Mostly Clear
Winds: 12 mph SE
57°

Tue, 08:00 PM

Mostly Clear
Winds: 12 mph SE
56°

Tue, 09:00 PM

Mostly Clear
Winds: 13 mph S
55°

Tue, 10:00 PM

Partly Cloudy
Winds: 13 mph S
55°

Tue, 11:00 PM

Partly Cloudy
Winds: 13 mph S
54°

Wed, 12:00 AM

Mostly Cloudy
Winds: 13 mph S
54°

Wed, 01:00 AM

Mostly Cloudy
Winds: 14 mph S
53°

Wed, 02:00 AM

Mostly Cloudy
Winds: 15 mph S
54°

Wed, 03:00 AM

Mostly Cloudy
Winds: 15 mph S
53°

Wed, 04:00 AM

Mostly Cloudy
Winds: 15 mph S
54°

Overnight

Clear
40°
Winds: 9 mph NE
Clear, with a low around 40. Northeast wind around 9 mph.

Tuesday

Sunny
58°
Winds: 3 to 9 mph SE
Sunny, with a high near 58. Southeast wind 3 to 9 mph.

Tuesday Night

Partly Cloudy
52°
Winds: 10 to 15 mph S
Partly cloudy, with a low around 52. South wind 10 to 15 mph, with gusts as high as 21 mph.

Wednesday

Rain Showers Likely
68°
Winds: 7 to 15 mph W
Rain showers likely after 8am. Partly sunny, with a high near 68. West wind 7 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night

Rain Showers Likely then Partly Cloudy
56°
Winds: 2 to 6 mph NW
Rain showers likely before 8pm. Partly cloudy, with a low around 56. Northwest wind 2 to 6 mph. Chance of precipitation is 60%.

Thursday

Sunny
71°
Winds: 5 mph NW
Sunny, with a high near 71.

Thursday Night

Mostly Clear
58°
Winds: 3 mph S
Mostly clear, with a low around 58.

Friday

Mostly Sunny then Slight Chance Showers And Thunderstorms
70°
Winds: 2 to 6 mph NE
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 70.

Friday Night

Chance Showers And Thunderstorms
57°
Winds: 7 mph SE
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.

Saturday

Chance Showers And Thunderstorms
65°
Winds: 7 to 12 mph E
A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 65. Chance of precipitation is 50%.

Saturday Night

Showers And Thunderstorms Likely
54°
Winds: 14 mph NE
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

Sunday

Rain Showers Likely
58°
Winds: 14 mph NE
Rain showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.

Sunday Night

Chance Rain Showers
51°
Winds: 8 to 13 mph NE
A chance of rain showers. Partly cloudy, with a low around 51. Chance of precipitation is 40%.

Monday

Slight Chance Rain Showers
62°
Winds: 9 mph E
A slight chance of rain showers. Mostly sunny, with a high near 62.

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.

Tidal Potomac from Key Bridge to Indian Head

REST OF THE OVERNIGHT
N winds 5 kt Waves less than 1 ft
TODAY
S winds around 5 kt Waves 1 ft
TONIGHT
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 04:57 AM EDT Tue Apr 21 2026

Tidal Potomac from Indian Head to Cobb Island

REST OF THE OVERNIGHT
NE winds 10 kt Waves 1 ft
TODAY
E winds around 5 kt
TONIGHT
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 04:57 AM EDT Tue Apr 21 2026

Tidal Potomac from Cobb Island to Smith Point

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Chesapeake Bay north of Pooles Island

REST OF THE OVERNIGHT
NE winds 10 kt Waves 1 ft
TODAY
N winds 5 kt
TONIGHT
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 flat
THU
NW winds around 5 kt Waves flat
THU NIGHT
NW winds around 5 kt Waves flat
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 04:57 AM EDT Tue Apr 21 2026

Chesapeake Bay from Pooles Island to Sandy Point

REST OF THE OVERNIGHT
NE winds 10 kt Waves 1 ft
TODAY
NE winds 5 to 10 kt
TONIGHT
S winds 10 to 15 kt with gusts to 20 kt Waves 2 ft
WED
SW winds 10 to 15 kt
WED NIGHT
NW winds around 5 kt Waves 1 ft or less
THU
NW winds 5 kt Waves flat
THU NIGHT
SE winds around 5 kt Waves flat
FRI
E winds 5 to 10 kt Waves 1 ft or less A chance of showers
SAT
E winds 10 to 15 kt Waves 1 to 2 ft A chance of showers in the morning, then showers likely
Reporting time 04:57 AM EDT Tue Apr 21 2026

Patapsco River including Baltimore Harbor

REST OF THE OVERNIGHT
NE winds 5 kt Waves less than 1 ft
TODAY
NE winds 5 kt
TONIGHT
S winds 5 to 10 kt Waves 1 ft
WED
SW winds 5 to 10 kt Waves 1 ft or less Showers likely
WED NIGHT
NW winds around 5 kt Waves flat
THU
NW winds 5 kt Waves flat
THU NIGHT
NW winds around 5 kt Waves flat
FRI
E winds around 5 kt Waves 1 ft or less A chance of showers
SAT
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning Showers likely
Reporting time 04:57 AM EDT Tue Apr 21 2026

Chester River to Queenstown MD

REST OF THE OVERNIGHT
NE winds 10 kt Waves 1 ft
TODAY
NE winds 5 to 10 kt
TONIGHT
S winds 10 to 15 kt with gusts to 20 kt Waves 1 to 2 ft
WED
SW winds 10 to 15 kt
WED NIGHT
NW winds around 5 kt Waves flat
THU
NW winds around 5 kt Waves flat
THU NIGHT
SE winds around 5 kt Waves flat
FRI
E winds 5 to 10 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 04:57 AM EDT Tue Apr 21 2026

Chesapeake Bay from Sandy Point to North Beach

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Eastern Bay

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Chesapeake Bay from North Beach to Drum Point

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Choptank River to Cambridge MD and the Little Choptank River

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Patuxent River to Broomes Island MD

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Chesapeake Bay from Drum Point to Smith Point

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026

Tangier Sound and the inland waters surrounding Bloodsworth Island

SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING
Reporting time 04:57 AM EDT Tue Apr 21 2026
Oilrig
NWS
Buoy
Fixed Station
USGS
Ship
Other