Sumner, MD
Unincorporated community in Montgomery County, Maryland
Sumner is a small unincorporated community in Montgomery County, Maryland. It is 0.7 miles W of Brookmont, the nearest town. Its ZIP code is 20816.
Sumner at a glance
- State
- Maryland
- County
- Montgomery County
- ZIP code
- 20816
- Nearest town
- Brookmont (0.7 mi)
- Time zone
- America/New York
- Coordinates
- 38.9553, -77.1153
Weather in Sumner now
Loading the National Weather Service forecast…
Sumner weather by the hour
Sumner weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Sumner.
This week in Sumner
Sunrise, sunset and moon in Sumner
What is the weather usually like in Sumner?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Januarycoldest month · 26°F average low
- 48.5 inprecipitation per year · 1,233 mm
- 5.8 insnowfall per year · 15 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Sumner: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station DALECARLIA RSVR, MD US (USC00182325), adjusted for the elevation of Sumner.
Sumner weather month by month
Sunrise and sunset in Sumner through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:23 AM | 5:11 PM | 9 h 47 min |
| February | 6:57 AM | 5:47 PM | 10 h 49 min |
| March | 7:17 AM | 7:16 PM | 11 h 58 min |
| April | 6:30 AM | 7:46 PM | 13 h 16 min |
| May | 5:53 AM | 8:15 PM | 14 h 21 min |
| June | 5:40 AM | 8:37 PM | 14 h 56 min |
| July | 5:54 AM | 8:34 PM | 14 h 40 min |
| August | 6:20 AM | 8:04 PM | 13 h 44 min |
| September | 6:48 AM | 7:18 PM | 12 h 29 min |
| October | 7:16 AM | 6:31 PM | 11 h 14 min |
| November | 6:50 AM | 4:56 PM | 10 h 6 min |
| December | 7:18 AM | 4:48 PM | 9 h 30 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Sumner?
Sumner has a humid subtropical climate. The warmest month is July, with an average high of 88°F (31°C), and the coldest is January, with average lows of 26°F (-4°C).
It gets about 48.5 inches (1,233 mm) of precipitation a year. The wettest month is July and the driest is February. Snow is common: about 6 inches fall in an average year.
The best time to visit Sumner is May–June and September–October. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Sumner
The closest live webcam is Parkview Hills: I-495 - MM 42.5 - NB, 3.6 miles W of Sumner.
Webcams: Windy.com. Distances in a straight line from Sumner.
Do you know Sumner? Tell us about it
Help other travelers: share what makes Sumner special. We review every message before publishing it.
Map of Sumner, MD
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Sumner Street View
Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.
Open in Google Maps ›Towns near Sumner
Other communities near Sumner
- Spring Hill0.5 mi E
- Westmoreland Hills0.7 mi SE
- Westgate0.7 mi E
- Westwood0.8 mi NE
- Mohican Hills0.9 mi NW
- Westmoreland Terrace1.0 mi SE
- Wood Acres1.0 mi NW
- Tulip Hill1.3 mi NW
- American University Park1.4 mi E
- Drummond1.4 mi NE
- Spring Valley1.4 mi SE
- Somerset Heights1.4 mi NE
- Robeyville1.5 mi E
- Tenleytown1.6 mi E
- Bannockburn1.9 mi NW
Questions about Sumner
Where is Sumner, MD?
Sumner is an unincorporated community in Montgomery County, Maryland, 0.7 miles W of Brookmont.
What county is Sumner in?
Sumner is in Montgomery County, Maryland.
What is the ZIP code of Sumner, MD?
The ZIP code for Sumner is 20816.
What is the nearest town to Sumner?
Brookmont, 0.7 miles away.
Are there webcams near Sumner?
Yes. The closest is Parkview Hills: I-495 - MM 42.5 - NB, 3.6 miles away.
What is the hottest month in Sumner?
July, with an average high of 88°F (31°C).
What is the coldest month in Sumner?
January, with an average low of 26°F (-4°C).
How much does it rain in Sumner?
About 48.5 inches (1,233 mm) a year; the wettest month is July.
Does it snow in Sumner?
Yes, about 6 inches of snow fall in an average year.
When is the best time to visit Sumner?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Sumner have?
Humid subtropical (Köppen Cfa).
Last updated: