Reston Weather Year-Round — Best Time to Visit
Reston, United States has mild weather year-round. The best time to visit is September (score: 84/100). Annual average high: 18.2°C, total rainfall: 1099mm.
When is the best time to visit Reston?
84
September is the best month to visit Reston with a travel score of 84/100 (Excellent).
Expect highs of 25.4°C, 9 rain days, and 9.2 hours of daily sunshine.
View September weather details →Travel Score by Month
53
Jan
58
Feb
64
Mar
74
Apr
80
May
83
Jun
83
Jul
83
Aug
84
Sep
76
Oct
66
Nov
56
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Reston each month?
18.2°C
Avg High
9.1°C
Avg Low
1099mm
Annual Rain
How much rain does Reston get?
Reston receives 1099mm of rain annually. The wettest month is typically September with 118mm, while November is the driest.
What is the weather like each month in Reston?
January
53
5°C
Low: -2°C
8 rain days
Mixed
February
58
7°C
Low: -2°C
8 rain days
Mixed
March
64
12°C
Low: 2°C
9 rain days
Good
April
74
18°C
Low: 8°C
10 rain days
Good
May
80
23°C
Low: 13°C
11 rain days
Good
June
83
28°C
Low: 18°C
11 rain days
Excellent
July
83
31°C
Low: 21°C
12 rain days
Excellent
August
83
29°C
Low: 20°C
11 rain days
Excellent
September
Best time to visit84
25°C
Low: 17°C
9 rain days
Excellent
October
76
19°C
Low: 10°C
7 rain days
Good
November
66
13°C
Low: 5°C
7 rain days
Good
December
56
8°C
Low: 0°C
8 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31