Sammamish Weather Year-Round — Best Time to Visit
Sammamish, United States has mild weather year-round. The best time to visit is July (score: 89/100). Annual average high: 15°C, total rainfall: 1646mm.
When is the best time to visit Sammamish?
89
July is the best month to visit Sammamish with a travel score of 89/100 (Excellent).
Expect highs of 24.3°C, 5 rain days, and 12.6 hours of daily sunshine.
View July weather details →Travel Score by Month
36
Jan
44
Feb
47
Mar
58
Apr
69
May
75
Jun
89
Jul
87
Aug
76
Sep
55
Oct
40
Nov
35
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Sammamish each month?
15°C
Avg High
6.8°C
Avg Low
1646mm
Annual Rain
How much rain does Sammamish get?
Sammamish receives 1646mm of rain annually. The wettest month is typically November with 240mm, while July is the driest.
What is the weather like each month in Sammamish?
January
36
8°C
Low: 2°C
19 rain days
Poor
February
44
9°C
Low: 2°C
15 rain days
Mixed
March
47
11°C
Low: 3°C
18 rain days
Mixed
April
58
14°C
Low: 5°C
16 rain days
Mixed
May
69
17°C
Low: 8°C
13 rain days
Good
June
75
20°C
Low: 11°C
11 rain days
Good
July
Best time to visit89
24°C
Low: 14°C
5 rain days
Excellent
August
87
24°C
Low: 14°C
6 rain days
Excellent
September
76
21°C
Low: 11°C
10 rain days
Good
October
55
15°C
Low: 7°C
15 rain days
Mixed
November
40
10°C
Low: 4°C
19 rain days
Poor
December
35
7°C
Low: 2°C
18 rain days
Poor
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Data based on 1994–2024 averages · Last updated: 2024-12-31