Arlington Heights Weather Year-Round — Best Time to Visit
Arlington Heights, United States has cool weather year-round. The best time to visit is September (score: 85/100). Annual average high: 14.1°C, total rainfall: 920mm.
When is the best time to visit Arlington Heights?
85
September is the best month to visit Arlington Heights with a travel score of 85/100 (Excellent).
Expect highs of 23.2°C, 8 rain days, and 9.8 hours of daily sunshine.
View September weather details →Travel Score by Month
40
Jan
48
Feb
56
Mar
63
Apr
73
May
82
Jun
83
Jul
83
Aug
85
Sep
69
Oct
57
Nov
44
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Arlington Heights each month?
14.1°C
Avg High
6.1°C
Avg Low
920mm
Annual Rain
How much rain does Arlington Heights get?
Arlington Heights receives 920mm of rain annually. The wettest month is typically May with 110mm, while February is the driest.
What is the weather like each month in Arlington Heights?
January
40
-1°C
Low: -8°C
8 rain days
Mixed
February
48
1°C
Low: -7°C
7 rain days
Mixed
March
56
7°C
Low: -2°C
9 rain days
Mixed
April
63
13°C
Low: 4°C
12 rain days
Good
May
73
20°C
Low: 10°C
12 rain days
Good
June
82
25°C
Low: 17°C
11 rain days
Excellent
July
83
28°C
Low: 19°C
11 rain days
Excellent
August
83
27°C
Low: 19°C
10 rain days
Excellent
September
Best time to visit85
23°C
Low: 15°C
8 rain days
Excellent
October
69
16°C
Low: 9°C
9 rain days
Good
November
57
9°C
Low: 2°C
7 rain days
Mixed
December
44
2°C
Low: -4°C
8 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31