Thornton Weather Year-Round — Best Time to Visit
Thornton, United States has mild weather year-round. The best time to visit is August (score: 93/100). Annual average high: 16.5°C, total rainfall: 467mm.
When is the best time to visit Thornton?
93
August is the best month to visit Thornton with a travel score of 93/100 (Excellent).
Expect highs of 28.8°C, 6 rain days, and 12.4 hours of daily sunshine.
View August weather details →Travel Score by Month
59
Jan
61
Feb
67
Mar
70
Apr
76
May
89
Jun
92
Jul
93
Aug
90
Sep
79
Oct
67
Nov
60
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Thornton each month?
16.5°C
Avg High
2°C
Avg Low
467mm
Annual Rain
How much rain does Thornton get?
Thornton receives 467mm of rain annually. The wettest month is typically May with 83mm, while December is the driest.
What is the weather like each month in Thornton?
January
59
5°C
Low: -9°C
5 rain days
Mixed
February
61
6°C
Low: -9°C
5 rain days
Good
March
67
11°C
Low: -5°C
7 rain days
Good
April
70
15°C
Low: 0°C
9 rain days
Good
May
76
20°C
Low: 6°C
11 rain days
Good
June
89
27°C
Low: 11°C
7 rain days
Excellent
July
92
30°C
Low: 15°C
6 rain days
Excellent
August
Best time to visit93
29°C
Low: 14°C
6 rain days
Excellent
September
90
25°C
Low: 10°C
5 rain days
Excellent
October
79
17°C
Low: 3°C
5 rain days
Good
November
67
10°C
Low: -4°C
5 rain days
Good
December
60
5°C
Low: -9°C
4 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31