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Waterloo Weather History (IA)



Details:

Temperature
  Temperature (ºF)
  Average Below
32º
Above
32º
January 14.6
14.6º
14.6º
February 20.1
20.1º
20.1º
March 34.2
34.2º
34.2º
April 48.3
48.3º
48.3º
May 60.2
60.2º
60.2º
June 69.1
69.1º
69.1º
July 73.1
73.1º
73.1º
August 70.3
70.3º
70.3º
September 61.9
61.9º
61.9º
October 50.1
50.1º
50.1º
November 35.7
35.7º
35.7º
December 20.3
20.3º
20.3º
Annual 46.5
46.5º
46.5º
  Extreme Temp. (Days Per Month)
  Below
32º
Above
90º
January 31
31
0
0
February 27
27
0
0
March 24
24
0
0
April 11
11
N/A
N/A
May 1
1
1
1
June 0
0
4
4
July 0
0
6
6
August 0
0
4
4
September 1
1
1
1
October 9
9
N/A
N/A
November 22
22
0
0
December 30
30
0
0
Annual 155
155
16
16
Humidity and Rain
  Relative Humidity
  Morning Percentage Afternoon Percentage
January
78%
78%
71%
71%
February
80%
80%
70%
70%
March
82%
82%
67%
67%
April
81%
81%
58%
58%
May
81%
81%
57%
57%
June
84%
84%
58%
58%
July
87%
87%
62%
62%
August
90%
90%
63%
63%
September
89%
89%
62%
62%
October
83%
83%
59%
59%
November
83%
83%
68%
68%
December
82%
82%
73%
73%
Annual
83%
83%
64%
64%
  Rain
  Inches
January 0.8
0.8
February 1.1
1.1
March 2.3
2.3
April 3.3
3.3
May 4.1
4.1
June 4.5
4.5
July 4.8
4.8
August 3.6
3.6
September 3.5
3.5
October 2.6
2.6
November 1.8
1.8
December 1.3
1.3
Annual 33.7
33.7
Cloudiness
  Cloudiness (Days Per Month)
  Clear Partly Cloudy Cloudy
January
8
7
16
February
7
6
15
March
6
7
18
April
6
8
16
May
7
9
14
June
7
11
12
July
9
12
11
August
9
11
11
September
10
8
12
October
10
8
14
November
5
7
18
December
7
6
18
Annual
91
100
174



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