Gaithersburg weather in August 2025

The weather in Gaithersburg in August is hot. The average temperatures are between 21°C and 30°C.

You can expect about 3 to 8 days of rain in Gaithersburg during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Gaithersburg in August 2025.

If you’re planning to visit Gaithersburg in the near future, we highly recommend that you review the 14 day weather forecast for Gaithersburg before you arrive.

Temperatures

30° / 21°

Rainy Days

Snowy Days

Dry Days

Rainfall

154

Sun Hours

10.9

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
					1 29° /19°	2 31° /19°
3 31° /19°	4 30° /19°	5 30° /20°	6 33° /21°	7 30° /20°	8 31° /21°	9 30° /22°
10 30° /21°	11 31° /20°	12 31° /20°	13 31° /19°	14 28° /18°	15 27° /19°	16 26° /19°
17 29° /20°	18 28° /19°	19 29° /18°	20 27° /17°	21 27° /16°	22 28° /18°	23 28° /17°
24 30° /19°	25 34° /21°	26 33° /21°	27 33° /21°	28 32° /21°	29 29° /21°	30 30° /21°
31 30° /19°

Explore the weather in Gaithersburg in other months

Gaithersburg annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	4° / -2°	6	19	6	97 mm	Awful	Gaithersburg in January
February	6° / -1°	7	15	6	115 mm	Awful	Gaithersburg in February
March	11° / 3°	8	19	4	115 mm	Awful	Gaithersburg in March
April	18° / 8°	7	23	0	121 mm	Ok	Gaithersburg in April
May	23° / 14°	8	23	0	146 mm	Good	Gaithersburg in May
June	28° / 18°	7	23	0	131 mm	Good	Gaithersburg in June
July	31° / 21°	8	23	0	161 mm	Ok	Gaithersburg in July
August	30° / 21°	7	24	0	154 mm	Ok	Gaithersburg in August
September	26° / 17°	6	24	0	135 mm	Perfect	Gaithersburg in September
October	20° / 12°	5	26	0	143 mm	Good	Gaithersburg in October
November	12° / 5°	5	25	1	91 mm	Ok	Gaithersburg in November
December	7° / 2°	6	21	4	124 mm	Bad	Gaithersburg in December