Online Highways Home > Maryland > Upper Marlboro City Map with Features Upper Marlboro 3 NNW Weather Station of the U.S. Weather Service Located in Upper Marlboro in Prince Georges County, Maryland, Upper Marlboro 3 NNW is at an elevation of 100 feet and was established as a weather station on 01 May 1956. From 1971 to 2000, the following average readings were recorded: - - - - - - - - - JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR Average High....... 42.5 46.0 55.0 65.4 74.2 82.5 87.0 85.4 79.0 68.1 57.8 47.2 65.8 Average Low........ 22.4 24.8 32.5 41.4 51.1 60.0 64.7 62.8 55.4 42.4 34.7 26.8 43.3 Monthly Precipitn.. 3.49 2.76 3.90 3.28 4.31 3.83 4.11 3.90 4.00 3.66 3.25 3.20 43.69 Heating Degree Days 1009 830 659 350 130 12 0 3 46 316 562 868 4785 Cooling Degree Days 0 0 0 2 56 198 336 285 111 14 0 0 1002 Read reviews and find hotels in Upper Marlboro. Location: Upper Marlboro Maryland See more Science. Other upcoming events include:

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TreytheGreat "RT @chuckbeezy_: Dear Lord, Give me the strength. I will never come back to Upper Marlboro again. #oop"
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JonGrant23 "Out here in PG. Upper Marlboro and Largo area to be exact. Haven't been out here in a while."
DjTheJuiceMan "In my way out clinton or upper marlboro idk one or the other to my aunt house....Wonder who over this joint...I'm smackin kufi's off"
_tashie_ "i dont even kno if i wanna go to upper marlboro to eat cuz my brother be doin to much && he jus made me mad"
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