Maryland, United States
Adelphi
Adelphi is a small town in Maryland, United States. It has a population of about 16,823 (2020). The climate is classified as humid subtropical (Köppen Cfa), with rain spread through the year and no real dry season.
Now56°F
Best timeApr · Sep–Oct
Population16,823
Local time10:25
39.00° N, 76.97° WElevation 171 ftUTC−4 · Eastern Daylight Time
Postal code20783October: high / low69° / 47°
Rain this month99mm
Best timeApr · Sep–Oct
Best: Apr · Sep–Oct. Warmth, sunshine and dry days, month by month.
Adelphi at a glance
Sunrise · sunset07:27 · 18:1810 h 51 min of daylightThe moon tonightFull moon97% · Moonrise 17:13Northern lights tonightUnlikely tonightKp needed: 6.8Next holiday11 NovemberVeterans DayNext eclipse20 Feb 2027Penumbral lunar eclipse
Best time to visitApr · Sep–Oct
The months with the highest weather score
Warmest month89°F
Average high in July
Coolest month26°F
Average low in January
Wettest monthJuly
107 mm of rain
Driest monthFebruary
74 mm of rain
Monuments nearby10+
within 15 km
Weather in Adelphi
Now and the next ten days. The 14 and 30-day outlooks are one click away.
56°F
Today hour by hourSunny · wind 7 km/h · humidity 60%
Today24 Oct62°41°
Sun25 Oct66°42°
Mon26 Oct69°42°
Tue27 Oct69°49°
Wed28 Oct64°46°
Thu29 Oct69°46°
Fri30 Oct77°48°
Sat31 Oct76°49°
Sun1 Nov71°51°
Mon2 Nov76°55°1.5 mm
When to go to Adelphi
Each month's weather score (warmth, sun, dry days) with its temperatures and rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Score | 35 | 34 | 46 | 72 | 66 | 49 | 40 | 46 | 70 | 77 | 58 | 33 |
| High | 44° | 47° | 55° | 67° | 76° | 84° | 89° | 87° | 80° | 69° | 57° | 47° |
| Low | 26° | 27° | 34° | 44° | 54° | 64° | 68° | 67° | 60° | 47° | 37° | 30° |
| Rain (mm) | 76 | 74 | 93 | 94 | 118 | 111 | 107 | 95 | 96 | 99 | 79 | 89 |
| Wet days | 8 | 8 | 10 | 11 | 13 | 14 | 14 | 13 | 9 | 9 | 8 | 9 |
What's on in Adelphi
Concerts, football matches, the public holidays ahead and the town's festivals through the year.
Monuments and museums in Adelphi
Outdoors around Adelphi
Hiking routes from the town, and what there is to do within 15 km: huts, viewpoints, climbing, camping, ski areas and dive sites.
Chevy Chase ClubGolf courses
0.6 kmDC Bouldering ProjectClimbing
0.6 kmOld Post Office TowerViewpoints
0.7 kmVillage EduZoos
0.8 kmClimbing WallClimbing
1.7 kmNational Zoological ParkZoos
1.7 kmNature around Adelphi
Wildlife in October
The birds and mammals of United States seen most this month, compared with the rest of their year.
The sky over Adelphi
Earthquakes around Adelphi
The last 30 days within 300 km, and the record since 1950.
Last 30 days0magnitude 2.5+ within 300 kmSince 19501magnitude 5+ within 150 kmSignificant earthquakes on record5within 300 km
Strongest nearby since 1950
5.8Cuckoo 6 km ↙2011 · 148 km
Universities and research institutes
University of Maryland Global CampusUniversity or college · founded 1947
University System of MarylandUniversity or college · founded 1988
Adelphi Laboratory CenterResearch institute
Towns and villages around Adelphi
Each with its own page: weather, climate and the best time to visit.
Avenel0.7 kmBuck Lodge1 kmWhite Oak Manor1.7 kmLangley Park1.8 kmChatham2.1 kmHillandale Forest2.4 kmCarole Highlands2.6 kmKnollwood2.8 kmLewiston3 kmLewisdale3.3 kmCherry Hill3.7 kmChillum Manor3.9 kmCollege Park3.9 kmGreen Meadows4 kmBerwyn4 kmLakeland4 kmCollege Heights4.1 kmDaniels Park4.1 kmBranchville4.2 kmHollywood4.2 kmBrookside Manor4.3 kmPowder Mill Estates4.3 kmCalvert Hills4.5 kmUniversity Park4.5 kmChillum4.7 kmCanonbury Square4.7 kmWhitehouse4.7 kmSellman Estates4.8 kmKirkwood4.9 kmChillum Heights4.9 kmEdgewood5 kmChillum Gardens5.1 kmNorth Avondale5.4 kmBerwyn Heights5.4 kmEllaville5.5 kmChestnut Hills5.5 kmAvondale Terrace5.5 kmCastle Manor5.6 kmRiverdale Park5.6 kmHyattsville5.7 kmQueenstown5.9 kmSpringhill Lake6 kmHome Acres6 kmSunnyside6 kmAvondale6.1 kmOrchard View6.3 kmNorth Woodridge6.5 kmNorth Brentwood6.7 kmBrentwood6.8 kmMount Rainier6.9 kmRosedale Park7 kmSpringbrook Terrace7.1 kmEdmonston7.2 kmWhiteley7.3 kmHighland7.3 kmRogers Heights7.4 kmCottage City7.5 kmWildercroft7.7 kmBladensburg7.8 kmVansville8 kmRives8.1 kmStafford8.1 kmColmar Manor8.1 kmGreenbelt8.3 kmAmmendale8.4 kmVilla Heights8.7 kmDefense Heights8.7 kmNew Carrollton8.8 kmWoodlawn9.2 kmLandover Hills9.6 kmCheverly9.6 kmMuirkirk9.9 kmBellemead10 kmLandover10 kmLanham10 kmTuxedo10 kmHynesboro10 kmGoddard10 kmSeabrook11 kmLanham-Seabrook11 km
Adelphi from above
Around Adelphi33 places to see, do and reach nearby
Fort StevensNature4.1 miPiney BranchNature6.2 miMcMillan ReservoirNature5.9 miLake ArtemesiaNature2.9 miWatts Branch, District of ColumbiaNature6.8 miKingman LakeNature7.4 miKingman IslandNature7.4 miTheodore Roosevelt IslandNature8.8 miMount Saint AlbanMountain7.3 miAsh HillMonument1.7 miLangley ParkMonument0.8 miDavis-Warner HouseMonument1.5 miNational Archives archeological siteMonument0.7 miWhite House, WashingtonMonument8.1 miUnited States CapitolMonument8.1 miWashington MonumentMonument8.6 miLincoln MemorialMonument8.9 miUniversity of Maryland Art GalleryMuseum1.8 miSmithsonian InstitutionMuseum8.4 miNational Gallery of ArtMuseum8.1 miNational Air and Space MuseumMuseum8.3 miNational Museum of American HistoryMuseum8.3 miCollege ParkStation2.9 miSilver SpringStation3.2 miGreenbeltStation3.2 miGeorgetown Ferry LandingFerry port8.5 miThe Wharf Ferry LandingFerry port9.0 miWashingtonPlace8.2 miAlexandriaPlace14 miBethesdaPlace7.1 miSilver SpringPlace3.0 miBowiePlace14 miMcLeanPlace12 mi
Postal code
20783
Getting to Adelphi
Ronald Reagan Washington National AirportDCA
18 kmBaltimore/Washington International Thurgood Marshall AirportBWI
33 kmWashington Dulles International AirportIAD
42 kmCollege ParkRailway station
4.7 kmSilver SpringRailway station
5.2 kmGreenbeltRailway station
5.2 kmGeorgetown Ferry LandingAlexandria City Marina (Old Town) Ferry Landing · The Wharf Ferry Landing
14 kmThe Wharf Ferry LandingAlexandria City Marina (Old Town) Ferry Landing · City Cruises Washington DC · Georgetown Ferry Landing
15 kmPlaces near Adelphi
Places with a climate like Adelphi
Matched month by month on temperature, rain and sunshine.
94% alikePhiladelphia
United States
67° / 47°Apr · Sep–Oct
95% alikeCharlottesville
United States
69° / 47°Apr · Sep–Oct
95% alikeCamden
United States
67° / 47°Apr · Sep–Oct
95% alikePaulsboro
United States
67° / 47°Apr · Sep–Oct
95% alikeWoodbury
United States
67° / 47°Apr · Sep–Oct
95% alikeGloucester City
United States
67° / 47°Apr · Sep–Oct
Frequently asked questions
When is the best time to visit Adelphi?
Based on 30-year climate normals, April, September and October offer the best balance of comfortable temperatures, low rainfall and sunshine in Adelphi.
What is the hottest month in Adelphi?
July is the warmest month, with average highs of 89°F and lows of 68°F.
What is the coldest month in Adelphi?
January is the coldest month, with average highs of 44°F and lows of 26°F.
What is the rainiest month in Adelphi?
July is the wettest month with about 4.2 in of precipitation on 14 wet days.
What is the postal code of Adelphi?
The postal code of Adelphi is 20783.