If you’re seeking a sunny getaway, the ideal months to visit Gaithersburg are July, June and August. During this time, the average temperature soars to 26.97 °C. Additionally, the sun shines brightest in September, October, and July, which are the top three sunniest months of the year, offering an impressive average of 132.67 hours of sunshine daily.
On the other hand, if you prefer cooler weather, consider planning your trip to Gaithersburg during the months of January, February and March. During these months, the average temperature is -0.55 °C.
For travelers who are less concerned about temperature but want to stay dry, it's wise to steer clear of visiting during January, February and March. During these months, the average precipitation in Gaithersburg reaches 8.25 mm. In contrast, the months of January, February and March, are much drier, averaging 0 mm of rainfall.