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Adelphi, MD Weather Forecast

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Overcast

71°F

Updated	6:54 pm
Feels Like	71°F
Humidity	86%
Wind	S 5 mph
Barometer	29.89 in
Dew Point	67°F

Overcast

22°C

Updated	6:54 pm
Feels Like	22°C
Humidity	86%
Wind	S 8 km/h
Barometer	101.2 kPa
Dew Point	20°C

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Cloud Cover	77%
uv UV Index	2
Sunrise	6:40 AM
Sunset	5:03 PM
Moonrise	2:56 AM
Moonset	3:01 PM

Civil Twilight
6:09 AM to 6:37 AM
5:02 PM to 5:30 PM
Adelphi MD Weather - Waning Crescent Moon

Waning Crescent Moon

Adelphi Weather Forecast

REST OF THIS AFTERNOON	TONIGHT	FRIDAY	FRIDAY NIGHT	SATURDAY	SATURDAY NIGHT	SUNDAY	SUNDAY NIGHT	MONDAY	MONDAY NIGHT	TUESDAY	TUESDAY NIGHT

Chance of T-Storm	Thunderstorms	Chance of T-Storm	Mostly Cloudy	Mostly Sunny	Mostly Clear	Sunny	Clear	Sunny	Clear	Sunny	Mostly Clear
Hi: 75°FHi: 24°C	Lo: 61°FLo: 16°C	Hi: 69°FHi: 21°C	Lo: 49°FLo: 9°C	Hi: 60°FHi: 16°C	Lo: 45°FLo: 7°C	Hi: 61°FHi: 16°C	Lo: 41°FLo: 5°C	Hi: 65°FHi: 18°C	Lo: 39°FLo: 4°C	Hi: 69°FHi: 21°C	Lo: 41°FLo: 5°C
POP: 40%	POP: 70%	POP: 70%

POP = Probability of Precipitation.

Weather Outlook Updated: 356 PM EST Thu Nov 05 2026 Adelphi, MD Weather - WeatherWorld.com

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Adelphi Forecast Discussion

Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 229 PM EST Thu Nov 5 2026

Key Messages

1) Unseasonable warmth and rain chances through Friday.
2) Seasonably cool weather returns this weekend.
3) Dry conditions early next week.

Discussion

... KEY MESSAGE 1...Unseasonable warmth and rain chances through Friday.

A cold front was set to cross the Appalachian crest as of early afternoon. South to southwesterly breezes combined with cloud breaks were pushing temperatures well into the 70s (60s in the mountains). Spotty light shower activity was developing ahead of the front.

As ...

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Weather 101: Term of the Day

Tsunami

A series of long-period waves (on the order of tens of minutes) that are usually generated by an impulsive disturbance that displaces massive amounts of water, such as an earthquake occurring on or near the sea floor. Underwater volcanic eruptions and landslides can also cause tsunami. The resultant waves much the same as waves propagating in a calm pond after a rock is tossed. While traveling in the deep oceans, tsunami have extremely long wavelengths, often exceeding 50 nm, with small amplitudes (a few tens of centimeters) and negligible wave steepness, which in the open ocean would cause nothing more than a gentle rise and fall for most vessels, and possibly go unnoticed. Tsunami travel at very high speeds, sometimes in excess of 400 knots. Across the open oceans, these high-speed waves lose very little energy. As tsunami reach the shallow waters near the coast, they begin to slow down while gradually growing steeper, due to the decreasing water depth. The building walls of destruction can become extremely large in height, reaching tens of meters 30 feet or more as they reach the shoreline. The effects can be further amplified where a bay, harbor, or lagoon funnels the waves as they move inland. Large tsunami have been known to rise to over 100 feet! The amount of water and energy contained in tsunami can have devastating effects on coastal areas.