Tall Timbers, MD
07/03/2026 02:00 PM
91°F
TEMPERATURE
Winds 5 mph W
Sunny
Sunny, with a high near 97. Heat index values as high as 103. Southwest wind around 6 mph.

Alerts

You have (3) alert(s). Tap to see details.

Extreme Heat Warning

Severe
Extreme Heat Warning issued July 3 at 12:30PM EDT until July 3 at 9:00PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Likely Severe
Status Urgency Category
Actual Expected Met
Effective Ends Expires
07/03/2026 12:30 PM 07/03/2026 09:00 PM 07/03/2026 08:30 PM 
* WHAT...Dangerously hot conditions each afternoon with heat index
values between 110 to 115 expected.

* WHERE...Washington DC, and portions of central, north central,
northeast, northern, and southern Maryland, and central, northern,
and northwest Virginia.

* WHEN...For the first Extreme Heat Warning, until 9 PM EDT this
evening. For the second Extreme Heat Warning, from 10 AM to 9 PM
EDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Early morning low temperatures in the 70s and
80s combined with oppressive humidity will result in little to no
overnight relief. Prolonged excessive heat may impact power,
water, and transportation systems. Heat index values around 100
are possible again Sunday afternoon.

Extreme Heat Warning

Severe
Extreme Heat Warning issued July 3 at 12:30PM EDT until July 4 at 9:00PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Likely Severe
Status Urgency Category
Actual Expected Met
Effective Ends Expires
07/03/2026 12:30 PM 07/04/2026 09:00 PM 07/03/2026 08:30 PM 
* WHAT...Dangerously hot conditions each afternoon with heat index
values between 110 to 115 expected.

* WHERE...Washington DC, and portions of central, north central,
northeast, northern, and southern Maryland, and central, northern,
and northwest Virginia.

* WHEN...For the first Extreme Heat Warning, until 9 PM EDT this
evening. For the second Extreme Heat Warning, from 10 AM to 9 PM
EDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Early morning low temperatures in the 70s and
80s combined with oppressive humidity will result in little to no
overnight relief. Prolonged excessive heat may impact power,
water, and transportation systems. Heat index values around 100
are possible again Sunday afternoon.

Air Quality Alert

Unknown
Air Quality Alert issued July 2 at 4:40PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Unknown Unknown
Status Urgency Category
Actual Unknown Met
Effective Ends Expires
07/02/2026 04:40 PM 07/03/2026 02:29 PM 07/04/2026 12:00 AM 
The Maryland Department of the Environment has issued a Code
ORANGE Air Quality Alert Friday for
Southern Maryland.

A Code Orange Air Quality Alert means that air pollution
concentrations within the region may become unhealthy for
sensitive groups. Sensitive groups include children, people
suffering from asthma, heart disease or other lung diseases and
the elderly. The effects of air pollution can be minimized by
avoiding strenuous activity or exercise outdoors.

For more information on ground-level ozone
and fine particles visit the web site
mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx
Moonrise
11:59 PM
Moonset
10:04 AM
Sunrise
05:47 AM
Moon Phase
Waning gibbous
Sunset
08:33 PM

Hourly Forecast

Fri, 02:00 PM

Sunny
Winds: 5 mph W
91°

Fri, 03:00 PM

Sunny
Winds: 5 mph W
92°

Fri, 04:00 PM

Sunny
Winds: 6 mph S
93°

Fri, 05:00 PM

Sunny
Winds: 6 mph S
93°

Fri, 06:00 PM

Clear
Winds: 6 mph S
93°

Fri, 07:00 PM

Clear
Winds: 7 mph S
91°

Fri, 08:00 PM

Clear
Winds: 7 mph S
89°

Fri, 09:00 PM

Mostly Clear
Winds: 6 mph S
87°

Fri, 10:00 PM

Slight Chance Showers And Thunderstorms
Winds: 7 mph S
85°

Fri, 11:00 PM

Slight Chance Rain Showers
Winds: 6 mph S
84°

Sat, 12:00 AM

Mostly Clear
Winds: 6 mph S
83°

Sat, 01:00 AM

Mostly Clear
Winds: 3 mph S
83°

Sat, 02:00 AM

Mostly Clear
Winds: 5 mph NW
82°

Sat, 03:00 AM

Mostly Clear
Winds: 5 mph W
82°

Sat, 04:00 AM

Mostly Clear
Winds: 5 mph W
81°

Sat, 05:00 AM

Mostly Clear
Winds: 3 mph W
80°

Sat, 06:00 AM

Sunny
Winds: 3 mph W
81°

Sat, 07:00 AM

Sunny
Winds: 3 mph W
81°

Sat, 08:00 AM

Sunny
Winds: 3 mph NW
83°

Sat, 09:00 AM

Sunny
Winds: 3 mph NW
85°

Sat, 10:00 AM

Sunny
Winds: 3 mph NW
87°

Sat, 11:00 AM

Sunny
Winds: 3 mph SW
89°

Sat, 12:00 PM

Sunny
Winds: 3 mph SW
89°

Sat, 01:00 PM

Sunny
Winds: 5 mph S
90°

This Afternoon

Sunny
97°
Winds: 6 mph SW
Sunny, with a high near 97. Heat index values as high as 103. Southwest wind around 6 mph.

Tonight

Slight Chance Showers And Thunderstorms then Mostly Clear
80°
Winds: 3 to 7 mph SW
A slight chance of showers and thunderstorms between 10pm and midnight. Mostly clear, with a low around 80. Heat index values as high as 103. Southwest wind 3 to 7 mph.

Independence Day

Sunny then Chance Showers And Thunderstorms
94°
Winds: 3 to 8 mph SW
A chance of showers and thunderstorms after 5pm. Sunny, with a high near 94. Heat index values as high as 102. Southwest wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Saturday Night

Chance Showers And Thunderstorms then Mostly Cloudy
76°
Winds: 3 to 9 mph SW
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 76. Southwest wind 3 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Sunday

Mostly Sunny then Chance Showers And Thunderstorms
89°
Winds: 5 to 8 mph SE
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Southeast wind 5 to 8 mph. Chance of precipitation is 30%.

Sunday Night

Chance Showers And Thunderstorms
75°
Winds: 6 to 9 mph E
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 50%.

Monday

Showers And Thunderstorms Likely
85°
Winds: 7 mph E
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Mostly sunny, with a high near 85. Chance of precipitation is 60%.

Monday Night

Showers And Thunderstorms Likely
76°
Winds: 5 to 9 mph S
Showers and thunderstorms likely. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

Tuesday

Slight Chance Rain Showers then Chance Showers And Thunderstorms
85°
Winds: 6 mph NW
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Tuesday Night

Chance Showers And Thunderstorms
75°
Winds: 6 mph S
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.

Wednesday

Chance Rain Showers
84°
Winds: 6 mph NE
A chance of rain showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

Wednesday Night

Chance Rain Showers then Partly Cloudy
75°
Winds: 2 to 6 mph S
A chance of rain showers before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

Thursday

Mostly Sunny then Slight Chance Showers And Thunderstorms
86°
Winds: 2 to 7 mph S
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 20%.

Thursday Night

Slight Chance Showers And Thunderstorms
76°
Winds: 5 to 9 mph S
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76.

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. A broad area of hot high pressure will remain near the Mid-Atlantic through the holiday weekend. The chance for strong thunderstorms increases this weekend into early next week, with Special Marine Warnings possible. A frontal zone will meander nearby on Sunday into Monday, before drifting south of the waters thereafter.

Tidal Potomac from Key Bridge to Indian Head

THIS AFTERNOON
SW winds 5 kt Waves less than 1 ft
TONIGHT
W winds around 5 kt Waves 1 ft or less
SAT
W winds around 5 kt Waves 1 ft A chance of showers and tstms
SAT NIGHT
SW winds around 5 kt Waves 1 ft or less A chance of showers and tstms
SUN
S winds around 5 kt Waves 1 ft or less Showers likely with a chance of tstms
SUN NIGHT
E winds around 5 kt Waves 1 ft Showers likely with a chance of tstms
MON
E winds around 5 kt Waves 1 ft Showers likely with a chance of tstms
TUE
N winds around 5 kt Waves 1 ft A chance of tstms through the night A chance of showers
Reporting time 12:47 PM EDT Fri Jul 3 2026

Tidal Potomac from Indian Head to Cobb Island

THIS AFTERNOON
SW winds 5 kt Waves less than 1 ft
TONIGHT
W winds around 5 kt Waves 1 ft
SAT
W winds around 5 kt Waves 1 ft A chance of showers and tstms
SAT NIGHT
SW winds around 5 kt Waves 1 ft A chance of showers and tstms
SUN
S winds around 5 kt Waves 1 ft or less A chance of showers and tstms
SUN NIGHT
E winds around 5 kt Waves 1 ft Showers likely with a chance of tstms
MON
SE winds around 5 kt Waves 1 ft Showers likely with a chance of tstms
TUE
N winds around 5 kt Waves 1 ft A chance of tstms through the night A chance of showers
Reporting time 12:47 PM EDT Fri Jul 3 2026

Tidal Potomac from Cobb Island to Smith Point

THIS AFTERNOON
SW winds 5 kt Waves flat
TONIGHT
S winds around 5 kt Waves 1 ft
SAT
SW winds around 5 kt Waves 1 ft or less
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN NIGHT
SE winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
MON
SE winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
TUE
NW winds 5 kt
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chesapeake Bay north of Pooles Island

THIS AFTERNOON
SW winds 5 to 10 kt Waves 1 ft A slight chance of showers and tstms
TONIGHT
W winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SAT
W winds around 5 kt
SAT NIGHT
W winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN
SE winds around 5 kt Waves flat Showers likely with a chance of tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning, then showers likely with a chance of tstms
TUE
NE winds 5 to 10 kt Waves 1 ft or less A chance of showers A chance of tstms through the night
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chesapeake Bay from Pooles Island to Sandy Point

THIS AFTERNOON
S winds 5 to 10 kt Waves 1 ft
TONIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SAT
W winds around 5 kt
SAT NIGHT
W winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN
S winds 5 kt Waves less than 1 ft Showers likely with a chance of tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning, then showers likely with a chance of tstms
TUE
NE winds 5 to 10 kt Waves 1 ft A chance of showers A chance of tstms through the night
Reporting time 12:47 PM EDT Fri Jul 3 2026

Patapsco River including Baltimore Harbor

THIS AFTERNOON
S winds 5 to 10 kt Waves 1 ft or less
TONIGHT
W winds around 5 kt Waves 1 ft or less A chance of showers and tstms
SAT
SW winds around 5 kt
SAT NIGHT
W winds around 5 kt Waves 1 ft or less A chance of showers and tstms
SUN
SE winds around 5 kt Waves 1 ft or less Showers likely with a chance of tstms
SUN NIGHT
E winds 5 kt Waves less than 1 ft Showers with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft A chance of showers in the morning, then showers likely with a chance of tstms
TUE
NE winds 5 kt Waves less than 1 ft A chance of showers A chance of tstms through the night
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chester River to Queenstown MD

THIS AFTERNOON
SW winds 5 kt Waves less than 1 ft
TONIGHT
SW winds 5 kt Waves less than 1 ft A chance of showers and tstms
SAT
W winds around 5 kt
SAT NIGHT
W winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN
SW winds around 5 kt Waves flat A chance of showers and tstms
SUN NIGHT
E winds 5 kt Waves less than 1 ft Showers likely with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft or less Showers likely with a chance of tstms
TUE
NE winds 5 kt Waves less than 1 ft A chance of showers
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chesapeake Bay from Sandy Point to North Beach

THIS AFTERNOON
S winds 5 to 10 kt Waves 1 ft or less
TONIGHT
SW winds 5 to 10 kt
SAT
W winds around 5 kt
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 kt Waves less than 1 ft A chance of showers and tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
TUE
NE winds 5 to 10 kt Waves 1 ft A chance of showers A chance of tstms through the night
Reporting time 12:47 PM EDT Fri Jul 3 2026

Eastern Bay

THIS AFTERNOON
SW winds 5 to 10 kt Waves 1 ft or less
TONIGHT
SW winds 5 to 10 kt Waves 1 ft
SAT
W winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN
SW winds around 5 kt Waves flat A chance of showers and tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
MON
E winds 5 to 10 kt Waves 1 ft or less Showers likely with a chance of tstms
TUE
NE winds 5 kt Waves less than 1 ft A chance of showers
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chesapeake Bay from North Beach to Drum Point

THIS AFTERNOON
SE winds 5 to 10 kt Waves 1 ft or less
TONIGHT
SW winds 5 to 10 kt
SAT
W winds around 5 kt
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
MON
SE winds 5 to 10 kt
TUE
N winds 5 to 10 kt
Reporting time 12:47 PM EDT Fri Jul 3 2026

Choptank River to Cambridge MD and the Little Choptank River

THIS AFTERNOON
SW winds 5 kt Waves less than 1 ft
TONIGHT
SW winds 5 to 10 kt
SAT
W winds 5 to 10 kt Waves 1 ft or less
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft or less A chance of showers and tstms
SUN
SW winds around 5 kt Waves 1 ft or less A chance of showers and tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
MON
SE winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
TUE
NW winds 5 kt
Reporting time 12:47 PM EDT Fri Jul 3 2026

Patuxent River to Broomes Island MD

THIS AFTERNOON
S winds 5 kt Waves less than 1 ft
TONIGHT
SW winds around 5 kt Waves 1 ft
SAT
NW winds around 5 kt
SAT NIGHT
SW winds around 5 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN NIGHT
E winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
MON
SE winds 5 to 10 kt Waves 1 ft Showers likely with a chance of tstms
TUE
N winds 5 kt Waves less than 1 ft A chance of showers
Reporting time 12:47 PM EDT Fri Jul 3 2026

Chesapeake Bay from Drum Point to Smith Point

THIS AFTERNOON
S winds 5 to 10 kt Waves 1 ft
TONIGHT
S winds 5 to 10 kt
SAT
W winds around 5 kt
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 to 10 kt Waves 1 ft
SUN NIGHT
SE winds 10 to 15 kt Waves 2 ft A chance of showers and tstms
MON
SE winds 10 to 15 kt
TUE
W winds 5 to 10 kt
Reporting time 12:47 PM EDT Fri Jul 3 2026

Tangier Sound and the inland waters surrounding Bloodsworth Island

THIS AFTERNOON
SW winds 5 kt Waves less than 1 ft
TONIGHT
SW winds 5 to 10 kt Waves 1 ft
SAT
W winds around 5 kt
SAT NIGHT
SW winds 5 to 10 kt Waves 1 ft A chance of showers and tstms
SUN
S winds 5 to 10 kt Waves 1 ft or less
SUN NIGHT
SE winds 10 to 15 kt Waves 1 ft A chance of showers and tstms
MON
SE winds 5 to 10 kt Waves 1 ft A chance of showers in the afternoon A chance of tstms Showers likely through the night
TUE
W winds 5 to 10 kt
Reporting time 12:47 PM EDT Fri Jul 3 2026
Oilrig
NWS
Buoy
Fixed Station
USGS
Ship
Other