McKinney Weather Year-Round — Best Time to Visit
McKinney, United States has warm weather year-round. The best time to visit is September (score: 91/100). Annual average high: 23.6°C, total rainfall: 1090mm.
When is the best time to visit McKinney?
91
September is the best month to visit McKinney with a travel score of 91/100 (Excellent).
Expect highs of 30.3°C, 6 rain days, and 10.4 hours of daily sunshine.
View September weather details →Travel Score by Month
65
Jan
66
Feb
71
Mar
81
Apr
80
May
85
Jun
87
Jul
88
Aug
91
Sep
86
Oct
73
Nov
65
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in McKinney each month?
23.6°C
Avg High
14.2°C
Avg Low
1090mm
Annual Rain
How much rain does McKinney get?
McKinney receives 1090mm of rain annually. The wettest month is typically May with 152mm, while July is the driest.
What is the weather like each month in McKinney?
January
65
12°C
Low: 3°C
6 rain days
Good
February
66
15°C
Low: 5°C
7 rain days
Good
March
71
19°C
Low: 9°C
9 rain days
Good
April
81
23°C
Low: 13°C
9 rain days
Excellent
May
80
27°C
Low: 18°C
11 rain days
Excellent
June
85
31°C
Low: 23°C
9 rain days
Excellent
July
87
34°C
Low: 25°C
6 rain days
Excellent
August
88
34°C
Low: 25°C
6 rain days
Excellent
September
Best time to visit91
30°C
Low: 21°C
6 rain days
Excellent
October
86
25°C
Low: 15°C
7 rain days
Excellent
November
73
18°C
Low: 9°C
7 rain days
Good
December
65
14°C
Low: 5°C
7 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31