For those seeking warm weather, the ideal time to visit Gaithersburg is in July, June and August. During these months, temperatures typically soar to an average of 26.97 °C, and you'll find that September, October and July are the sunniest months, with an average of 132.67 hours of sunshine.
Conversely, if you favor cooler weather, consider planning your trip to Gaithersburg in January, February or March. During this period, you can expect an average temperature of -0.55 °C.
For travelers indifferent to temperature but keen to steer clear of rain, it’s wise to avoid visiting during January, February and March, when the average precipitation in Gaithersburg reaches 8.25 mm. Instead, consider the drier months of January, February and March, which feature significantly lower rainfall, averaging only 0 mm.