Triadelphia, MD
Historical community (former settlement) in Montgomery County, Maryland
Triadelphia is a historical community (former settlement) in Montgomery County, Maryland. It is 3.6 miles S of Brookeville, the nearest town. Its ZIP code is 21737.
Triadelphia at a glance
- State
- Maryland
- County
- Montgomery County
- ZIP code
- 21737
- Nearest town
- Brookeville (3.6 mi)
- Time zone
- America/New York
- Coordinates
- 39.2333, -77.0417
Weather in Triadelphia now
Loading the National Weather Service forecast…
Triadelphia weather by the hour
Triadelphia weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Triadelphia.
This week in Triadelphia
Sunrise, sunset and moon in Triadelphia
What is the weather usually like in Triadelphia?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 84°F average high
- Januarycoldest month · 24°F average low
- 47.9 inprecipitation per year · 1,216 mm
- 31.4 insnowfall per year · 80 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Triadelphia: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station DAMASCUS 3 SSW, MD US (USC00182336), adjusted for the elevation of Triadelphia.
Triadelphia weather month by month
Sunrise and sunset in Triadelphia through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:24 AM | 5:10 PM | 9 h 46 min |
| February | 6:58 AM | 5:46 PM | 10 h 48 min |
| March | 7:17 AM | 7:16 PM | 11 h 58 min |
| April | 6:29 AM | 7:46 PM | 13 h 17 min |
| May | 5:52 AM | 8:16 PM | 14 h 23 min |
| June | 5:39 AM | 8:37 PM | 14 h 58 min |
| July | 5:52 AM | 8:35 PM | 14 h 42 min |
| August | 6:20 AM | 8:05 PM | 13 h 45 min |
| September | 6:48 AM | 7:18 PM | 12 h 29 min |
| October | 7:16 AM | 6:30 PM | 11 h 14 min |
| November | 6:50 AM | 4:55 PM | 10 h 4 min |
| December | 7:19 AM | 4:47 PM | 9 h 28 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Triadelphia?
Triadelphia has a hot-summer humid continental climate. The warmest month is July, with an average high of 84°F (29°C), and the coldest is January, with average lows of 24°F (-4°C).
It gets about 47.9 inches (1,216 mm) of precipitation a year. The wettest month is September and the driest is February. Snow is common: about 31 inches fall in an average year.
The best time to visit Triadelphia is May–June and August–September. 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 Triadelphia
The closest live webcam is Laurel, 13.9 miles SE of Triadelphia.
Webcams: Windy.com. Distances in a straight line from Triadelphia.
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Map of Triadelphia, MD
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Triadelphia Street View
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Open in Google Maps ›Towns near Triadelphia
Other communities near Triadelphia
Questions about Triadelphia
Where is Triadelphia, MD?
Triadelphia is a historical community (former settlement) in Montgomery County, Maryland, 3.6 miles S of Brookeville.
What county is Triadelphia in?
Triadelphia is in Montgomery County, Maryland.
What is the ZIP code of Triadelphia, MD?
The ZIP code for Triadelphia is 21737.
What is the nearest town to Triadelphia?
Brookeville, 3.6 miles away.
Are there webcams near Triadelphia?
Yes. The closest is Laurel, 13.9 miles away.
What is the hottest month in Triadelphia?
July, with an average high of 84°F (29°C).
What is the coldest month in Triadelphia?
January, with an average low of 24°F (-4°C).
How much does it rain in Triadelphia?
About 47.9 inches (1,216 mm) a year; the wettest month is September.
Does it snow in Triadelphia?
Yes, about 31 inches of snow fall in an average year.
When is the best time to visit Triadelphia?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Triadelphia have?
Hot-summer humid continental (Köppen Dfa).
Last updated: