Historical weather data, all-time temperature records, and monthly climate averages for Lanham, MD. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Lanham sits in that classic spring transition zone — expect something around 62° for a high and 39° overnight, but the range over 81 years tells the real story: it's hit 85° (2011) and dropped to 21° (1965) on this exact date. There's about a 1-in-3 chance of rain, though snow is essentially off the table.
Lanham's weather has real range — from a brutal -15° in January 1957 to a scorching 103° in July 1988, a 118-degree spread between the all-time extremes. The wettest single day on record dumped 9.38 inches during an August 1955 storm, and a February 2010 snowstorm buried the area under 22 inches in one shot.
Summers are hot and humid, peaking mid-July around 88° with the year's heaviest rainfall concentrated in that same stretch. If you're chasing cooler weather, mid-January averages just 41° for a high. Spring and fall offer the sweet spot — April through May and September through October bring comfortable 65–79° highs before the seasonal extremes take hold.