Weather history for Issaquah, Washington, United States

Sep 20

This Day in History

Weather in Issaquah on September 20

2014

Weather in Issaquah on 20 in 2014. Clear/Sunny
  • 82° F
  • Wind: NNW 8 mph
  • Humidity: 32%

2013

Weather in Issaquah on 20 in 2012. Clear/Sunny
  • 79° F
  • Wind: SE 4 mph
  • Humidity: 96%

2012

Weather in Issaquah on 20 in 2012. Clear/Sunny
  • 77° F
  • Wind: SSE 2 mph
  • Humidity: 68%

2011

Weather in Issaquah on 20 in 2012. Clear/Sunny
  • 79° F
  • Wind: SSE 4 mph
  • Humidity: 49%
Weather in Issaquah today

Issaquah average weather by month
Month Temperature °F Average Rainfall (mm) Average snow days Average Fog days
Average Absolute Daily Monthly
max min max min
January
47.8
36.0
62.1
15.1
4.6
143.7
3
15
February
50.5
35.4
66.9
6.8
3.1
87.8
2
13
March
54.7
38.3
78.1
20.3
3.1
97.2
2
12
April
60.1
41.9
81.0
32.0
2.5
74.8
1
8
May
66.2
46.8
90.0
35.1
1.5
45.1
0
7
June
71.2
51.3
93.9
42.1
1.3
39.7
0
5
July
77.5
55.2
100.0
48.0
0.6
18.3
0
5
August
77.5
55.2
95.0
48.0
0.9
27.7
0
6
September
72.5
51.6
91.9
33.6
0.9
26.3
0
10
October
61.0
45.3
82.9
30.0
2.8
87.5
0
16
November
52.0
39.4
64.9
17.6
5.5
165.8
1
16
December
46.9
35.4
64.0
12.0
4.3
134.6
3
17

year temperature in average


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