Weather for 20859 — Potomac, MD
Conditions and forecast for the exact centre of ZIP code 20859 (39.144, -77.208), not a nearby airport.
64°
Overcast
- Feels like:
- 64°
- Humidity:
- 98%
- Wind:
- 10 mph
- Dew point:
- 64°
Source updated: 1:47:52 PM · WeatherSignal checked: 1:47:52 PM
Next 12 hours in 20859
2 PM
67°
0%
3 PM
70°
0%
4 PM
75°
0%
5 PM
78°
0%
6 PM
80°
0%
7 PM
80°
0%
8 PM
80°
0%
9 PM
78°
0%
10 PM
69°
0%
11 PM
66°
0%
12 AM
65°
0%
1 AM
64°
0%
7 day forecast for 20859
Today
80° / 64°
0% rain · 15 mph wind
Saturday, Oct 17
65° / 49°
0% rain · 17 mph wind
Sunday, Oct 18
58° / 41°
0% rain · 13 mph wind
Monday, Oct 19
55° / 43°
0% rain · 10 mph wind
Tuesday, Oct 20
66° / 49°
0% rain · 12 mph wind
Wednesday, Oct 21
64° / 53°
0% rain · 13 mph wind
Thursday, Oct 22
60° / 53°
0% rain · 11 mph wind
About ZIP code 20859
20859 covers Potomac in Maryland. Forecasts on this page are generated for the coordinates at the centre of the ZIP code, so small differences from a nearby city forecast are expected and usually correct.
Closest cities with full forecast pages: Washington (19 mi), Alexandria (25 mi), Baltimore (33 mi), Richmond (111 mi).
Nearby ZIP codes
Severe weather warnings are issued by the National Weather Service for counties and polygons that may not line up with ZIP code boundaries. Always follow official warnings for your exact address.
Planning your week in Potomac 20859, Maryland
- The warmest afternoon ahead is today, reaching about 80°F.
- The coldest night ahead dips to about 41°F.
- This is a dry stretch — most days show rain chances under 20%, good for outdoor plans.
- The breeziest day looks like tomorrow, with sustained wind near 17 mph.
Common questions about Potomac 20859, Maryland weather
- How accurate is the Potomac 20859, Maryland forecast?
- The next 48 hours are usually reliable on temperature and sky cover, with timing that can shift by an hour or two. Days three and four are dependable for the overall pattern. Beyond that, treat the numbers as a planning direction rather than a promise — we label confidence on every day so you can judge for yourself.
- What is the best day this week in Potomac 20859, Maryland?
- No day in the current outlook has a rain chance above 40%, so conditions look favorable for outdoor plans across the week.
- Where does this forecast come from?
- Forecast values come from national weather model data, and official warnings come from the National Weather Service. We show the source and the last-updated time on every page, and we never invent a number the source did not publish — missing measurements are hidden, not guessed.
- How often is this page updated?
- The forecast refreshes whenever the source model publishes new data, typically several times a day. The freshness note near the top of the page shows exactly when the numbers you are looking at were issued.
More weather for Potomac 20859, Maryland
- Current weather in Potomac 20859, Maryland
- Potomac 20859, Maryland hourly forecast
- Potomac 20859, Maryland weather tomorrow
- Potomac 20859, Maryland weekend weather
- Potomac 20859, Maryland weather radar
- Potomac 20859, Maryland severe weather alerts
- Best time to go outside in Potomac 20859, Maryland
- What happened overnight in Potomac 20859, Maryland
- How accurate is the Potomac 20859, Maryland forecast?
- Potomac 20859, Maryland monthly weather averages
Weather in nearby cities
- Washington, DC weather · about 19 miles away
- Alexandria, VA weather · about 25 miles away
- Baltimore, MD weather · about 33 miles away
- Richmond, VA weather · about 111 miles away
- Philadelphia, PA weather · about 122 miles away
- Allentown, PA weather · about 136 miles away