Mount Vernon weather in August 2025

The weather in Mount Vernon in August is hot. The average temperatures are between 21°C and 29°C.

You can expect about 3 to 8 days of rain in Mount Vernon 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 Mount Vernon in August 2025.

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

Temperatures

29° / 21°

Rainy Days

Snowy Days

Dry Days

Rainfall

189

Sun Hours

10.9

Hrs

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

Explore the weather in Mount Vernon in other months

Mount Vernon annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	2° / -3°	5	18	8	101 mm	Awful	Mount Vernon in January
February	4° / -3°	6	13	9	120 mm	Awful	Mount Vernon in February
March	8° / 2°	7	19	5	133 mm	Awful	Mount Vernon in March
April	14° / 7°	8	22	1	128 mm	Ok	Mount Vernon in April
May	20° / 12°	8	23	0	141 mm	Ok	Mount Vernon in May
June	26° / 17°	7	23	0	152 mm	Good	Mount Vernon in June
July	29° / 21°	10	21	0	202 mm	Ok	Mount Vernon in July
August	29° / 21°	7	24	0	189 mm	Ok	Mount Vernon in August
September	25° / 17°	5	25	0	132 mm	Perfect	Mount Vernon in September
October	18° / 12°	6	25	0	147 mm	Good	Mount Vernon in October
November	11° / 5°	5	24	1	96 mm	Ok	Mount Vernon in November
December	6° / 1°	7	19	5	151 mm	Awful	Mount Vernon in December