Historical weather data, all-time temperature records, and monthly climate averages for Accokeek, MD. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Accokeek runs mild but unpredictable — historically, highs average 61° with lows dipping to 37°. The range tells the real story: this date has seen a balmy 80° (just this year, in 2025) and a brutal 25° low back in 1965. Rain is a one-in-three shot, but snow is essentially off the table.
Accokeek's weather has real teeth on both ends — the thermometer has hit 100° in June and cratered to -10° in January, a 110-degree swing over the decades. A single January day in 1966 dropped 18.7 inches of snow, and September of that same year brought a drenching 4.57 inches of rain in one day.
Summer is the main event here, with late June through early July averaging highs of 87° and the calendar staying warm well into September at 79°. If you're avoiding the heat, January and February are the coolest months, with highs only reaching the low 40s. Pack an umbrella for late August — it's the wettest stretch of the year, averaging 1.64 inches in a single week.