New York, NY 72° Los Angeles, CA 68° 🌤️ Chicago, IL 🌤️ Houston, TX 🌤️ Miami, FL 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO 🌤️ Toronto, ON 🌤️ Vancouver, BC
WeatherLive › Maryland › Potomac

Potomac, MD Weather (20854)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherPotomac · 4:38 AM EDT
89° | 68°
69°F
Feels like 73°
Sunny
WindN 3 mph · Gusts 3 mph
Precip63% · 0.11 in
Humidity89% · Dew point 66°
UV index6 High
Air Quality37 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:26 AM · 7:57 PM · 13h 31m

Weather map — Potomac

Full radar →
Now
69°
13%
3 mph
05:00
69°
14%
4 mph
06:00
69°
12%
5 mph
07:00
68°
15%
4 mph
08:00
72°
26%
5 mph
09:00
76°
10%
5 mph
10:00
81°
5%
5 mph
11:00
86°
13%
5 mph
12:00
87°
9%
3 mph
13:00
88°
5%
4 mph
14:00
87°
8%
6 mph
15:00
89°
12%
7 mph
16:00
79°
0.03 in
6 mph
17:00
84°
17%
8 mph
18:00
82°
0.03 in
6 mph
19:00
79°
32%
4 mph
20:00
77°
34%
3 mph
21:00
76°
46%
2 mph
22:00
75°
48%
2 mph
23:00
74°
42%
2 mph
00:00
73°
14%
2 mph
01:00
72°
57%
2 mph
02:00
71°
0.02 in
1 mph
03:00
70°
39%
2 mph

Today · Thu 8/20

High 89°
63% / 0.11 in

Sunny. Winds N at 8 mph.

Overnight · Thu 8/20

Low 68°
— / –

Sunny.

Tomorrow · Fri 8/21

80° | 69°
90% / 0.40 in

Fog. Winds E at 6 mph.

7-day trend

Potomac · temperature + precipitation

10-day forecast

Updated 4:38 AM

Details & indices

Wind
3 mph N
Gusts 3 mph
Humidity
89%
Dew point 66°
Pressure
29.94 inHg
Rising
UV index
6 — High
High today
Air Quality
Good
AQI 37 · US EPA
Allergy
High
Mugwort
Visibility
6 mi
Clear view
Allergy — Potomac

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
Moderate
Ragweed
Low

Sun & moon

Sunrise6:26 AM
Sunset7:57 PM
Length of day13h 31m
Moonrise2:56 PM
Moonset—
Moon phase🌓 First Quarter · 52%
Next full moonAug 28 Sturgeon Moon
Latitude39.0182°N
Longitude-77.2086°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Baltimore
—
—
Data sources · Thursday, August 20
Where the Potomac forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 39.0182°N, -77.2086°.
NBM + global weather models
Updated: 4:38 AM
Weather in Potomac
Over the next 10 days Potomac tops out around 89° (Thursday) and dips to 61° on the coolest night (Thursday). About 3.0 in of precipitation is expected in total; the most likely wet day is Wednesday (93% chance). Wind is the one to watch: gusts to 27 mph around Wednesday. No watches or warnings are active for the area right now. Right now Potomac is about 25° cooler than nearby Baltimore. Longer view: variable mid-latitude weather in every season.
Potomac, MD · Elev 361 ft · 39.02°N, 77.21°W · Maryland · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 4:38 AM