Annapolis MD
07/18/2026 12:00 PM
88°F
TEMPERATURE
Winds 10 mph S
Patchy Smoke
Patchy smoke before 2pm, then a chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 94. Heat index values as high as 109. Southwest wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Alerts

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

Flood Watch issued July 18 at 11:43AM EDT until July 18 at 8:00PM EDT by NWS Baltimore MD/Washington DC
NWS Baltimore MD/Washington DC
Category Certainty Severity
Met Possible Severe
Status Urgency Category
Actual Future Met
Effective Ends Expires
07/18/2026 11:43 AM 07/18/2026 08:00 PM 07/18/2026 07:45 PM
A slow-moving front will interact with a very humid airmass in
place to result in multiple rounds of showers and thunderstorms this
afternoon and evening.

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Washington DC, and portions of Maryland, including the
following areas, Anne Arundel, Carroll, Cecil, Central and
Southeast Howard, Central and Southeast Montgomery, Frederick,
Northern Baltimore, Northwest Harford, Northwest Howard, Northwest
Montgomery, Prince Georges, Southeast Harford and Southern
Baltimore, and northern Virginia, including the following areas,
Arlington/Falls Church/Alexandria, Eastern Loudoun, Fairfax and
Western Loudoun.

* WHEN...From 2 PM this afternoon through 8 PM EDT this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
- High humidity coupled with a slow-moving front is expected to
result in multiple rounds of showers and thunderstorms this
afternoon and evening. Localized rainfall rates of up to 2
inches per hour, with isolated totals of 2 to 4 inches are
possible.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information.
                                            
Heat Advisory issued July 18 at 7:50AM EDT until July 18 at 7:00PM 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
07/18/2026 07:50 AM 07/18/2026 07:00 PM 07/18/2026 07:00 PM
* WHAT...Heat index values around 105 expected.

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

* WHEN...From 11 AM this morning to 7 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
                                            
Air Quality Alert issued July 17 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
07/17/2026 04:40 PM 07/18/2026 12:46 PM 07/19/2026 12:00 AM
The Maryland Department of the Environment has issued a Code
ORANGE Air Quality Alert Saturday for
the Baltimore City Metro and Annapolis region.

Concentrations of fine particulate matter due to wildfire smoke will
persist at levels consistent with an Air Quality Index of Unhealthy
(Red Alert) to Very Unhealthy (Purple Alert) Friday night into
Saturday morning. Air quality begins to improve Saturday afternoon.

Code Purple and Code Red Air Quality Alerts mean that air pollution
concentrations within the region are unhealthy to very unhealthy for
the general population.

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
11:45 AM
Moonset
12:03 AM
Sunrise
05:54 AM
Moon Phase
Waxing crescent
Sunset
08:29 PM

Hourly Forecast

Sat, 12:00 PM

Patchy Smoke
Winds: 10 mph S
88°

Sat, 01:00 PM

Patchy Smoke
Winds: 12 mph S
93°

Sat, 02:00 PM

Scattered Showers And Thunderstorms
Winds: 12 mph S
94°

Sat, 03:00 PM

Chance Showers And Thunderstorms
Winds: 12 mph S
93°

Sat, 04:00 PM

Chance Showers And Thunderstorms
Winds: 12 mph SW
91°

Sat, 05:00 PM

Chance Showers And Thunderstorms
Winds: 10 mph SW
90°

Sat, 06:00 PM

Chance Showers And Thunderstorms
Winds: 10 mph SW
89°

Sat, 07:00 PM

Scattered Showers And Thunderstorms
Winds: 9 mph SW
87°

Sat, 08:00 PM

Chance Showers And Thunderstorms
Winds: 8 mph SW
84°

Sat, 09:00 PM

Chance Showers And Thunderstorms
Winds: 7 mph SW
81°

Sat, 10:00 PM

Slight Chance Showers And Thunderstorms
Winds: 7 mph SW
79°

Sat, 11:00 PM

Mostly Cloudy
Winds: 6 mph SW
79°

Sun, 12:00 AM

Partly Cloudy
Winds: 6 mph W
79°

Sun, 01:00 AM

Partly Cloudy
Winds: 6 mph W
78°

Sun, 02:00 AM

Mostly Cloudy
Winds: 6 mph W
78°

Sun, 03:00 AM

Mostly Cloudy
Winds: 6 mph W
78°

Sun, 04:00 AM

Mostly Cloudy
Winds: 6 mph W
78°

Sun, 05:00 AM

Mostly Cloudy
Winds: 6 mph W
77°

Sun, 06:00 AM

Partly Sunny
Winds: 6 mph W
76°

Sun, 07:00 AM

Mostly Cloudy
Winds: 7 mph NW
78°

Sun, 08:00 AM

Mostly Sunny
Winds: 7 mph NW
78°

Sun, 09:00 AM

Sunny
Winds: 8 mph NW
80°

Sun, 10:00 AM

Mostly Sunny
Winds: 9 mph N
83°

Sun, 11:00 AM

Partly Sunny
Winds: 9 mph N
84°
Winds: 12 mph SW
Patchy smoke before 2pm, then a chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 94. Heat index values as high as 109. Southwest wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Winds: 6 to 10 mph SW
A chance of showers and thunderstorms before 11pm. Some of the storms could be severe. Mostly cloudy, with a low around 76. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Winds: 6 to 9 mph NW
Mostly sunny, with a high near 89. Northwest wind 6 to 9 mph.
Winds: 3 to 8 mph NE
Mostly clear, with a low around 71. Northeast wind 3 to 8 mph.
Winds: 7 mph E
Sunny, with a high near 87. East wind around 7 mph.
Winds: 7 mph SE
A slight chance of rain showers between 8pm and 11pm, then a slight chance of showers and thunderstorms between 11pm and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Winds: 6 to 13 mph S
Showers and thunderstorms. Mostly cloudy, with a high near 91. Chance of precipitation is 80%.
Winds: 13 mph SW
Showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 90%.
Winds: 12 mph SW
Rain showers likely before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 90. Chance of precipitation is 70%.
Winds: 9 mph NW
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Winds: 9 mph N
A slight chance of rain showers before 8am. Sunny, with a high near 85. Chance of precipitation is 20%.
Winds: 2 to 7 mph N
Mostly clear, with a low around 69.
Winds: 3 to 7 mph NE
Sunny, with a high near 87.
Winds: 5 mph S
Partly cloudy, with a low around 71.

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 strong cold front will drop through the region tonight into Sunday. High pressure will build north of the area Monday before the next cold front approaches by midweek. Small Craft Advisories may be needed for portions of the waters Sunday, and again Monday night through Wednesday. Special Marine Warnings will likely be needed through this evening.

SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 12:03 PM EDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 12:03 PM EDT Sat Jul 18 2026
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