Waterloo Weather in 1940

Historical record of Waterloo, Iowa weather for the year 1940 based on NOAA data.
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1940 Waterloo Weather Extremes
Highest temperature 104 °F July 19
Lowest temperature -20 °F January 18
Highest daily low 76 °F July 25
Lowest daily high -4 °F January 18
Most daily precipitation 2.0 inches July 30
Most daily snow 9.0 inches December 16
Total annual snow 23.6 inches -
Highest Temperatures in Waterloo in 1940
Rank Temperature Date
1 104 °F Jul 19
2 103 °F Jul 24
3 102 °F Jul 18
4 99 °F Jul 23
4 99 °F Jul 10
6 98 °F Jul 25
6 98 °F Jul 20
6 98 °F Jun 18
9 97 °F Jul 22
9 97 °F Jun 22
Lowest Temperatures in Waterloo in 1940
Rank Temperature Date
1 -20 °F January 18
2 -19 °F February 25
3 -15 °F January 25
4 -12 °F December 3
4 -12 °F January 19
6 -10 °F January 27
6 -10 °F January 5
8 -9 °F January 23
9 -7 °F January 24
9 -7 °F January 17
January 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
11 0 0.00 0.0
13 -4 0.00 0.0
16 -1 0.00 0.0
11 -6 0.00 0.0
13 -10 0.00 0.0
24 -4 n/a n/a
22 9 n/a n/a
25 4 0.06 0.6
21 8 0.00 0.0
29 17 0.00 0.0
31 26 0.00 0.0
26 1 0.00 0.0
22 12 n/a n/a
23 17 n/a n/a
23 5 0.03 0.3
6 0 n/a n/a
6 -7 n/a n/a
-4 -20 0.00 0.0
14 -12 0.00 0.0
15 -3 0.00 0.0
20 1 0.00 0.0
20 -2 0.00 0.0
12 -9 0.00 0.0
11 -7 0.00 0.0
8 -15 0.00 0.0
11 -5 0.00 0.0
20 -10 0.00 0.0
24 -6 0.00 0.0
22 8 0.00 0.0
30 13 0.00 0.0
35 20 0.00 0.0
February 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
35 26 0.00 0.0
31 8 0.00 0.0
30 5 n/a n/a
34 22 n/a n/a
33 17 0.05 0.5
28 20 0.00 0.0
28 8 n/a n/a
25 19 n/a n/a
26 5 0.05 0.5
31 -5 0.00 0.0
40 15 0.00 0.0
38 26 0.00 0.0
30 25 0.00 0.0
29 15 0.00 0.0
40 20 0.00 0.0
39 34 n/a 0.0
40 32 n/a 0.0
39 29 0.00 0.0
34 29 0.00 0.0
34 27 0.15 1.5
33 26 0.00 0.0
27 15 0.03 0.3
33 17 0.00 0.0
33 -1 0.41 4.1
15 -19 0.00 0.0
33 10 0.00 0.0
33 23 0.00 0.0
29 17 0.00 0.0
35 21 0.00 0.0
March 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
38 26 n/a 0.0
36 28 n/a 0.0
37 31 0.29 0.0
34 27 0.00 0.0
33 28 0.00 0.0
37 29 0.00 0.0
40 28 0.00 0.0
41 20 0.00 0.0
35 23 0.00 0.0
35 20 0.00 0.0
29 19 n/a n/a
27 19 n/a n/a
26 20 0.22 3.5
23 8 0.05 0.5
39 6 0.00 0.0
41 17 0.00 0.0
53 30 0.00 0.0
48 32 0.00 0.0
46 27 n/a 0.0
41 22 n/a 0.0
34 20 n/a n/a
20 5 n/a n/a
20 3 0.00 0.0
21 8 0.00 0.0
28 5 n/a n/a
32 22 n/a n/a
38 29 0.11 0.5
53 33 0.00 0.0
62 35 0.00 0.0
72 33 0.00 0.0
63 35 0.00 0.0
April 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
58 33 0.00 0.0
66 37 0.00 0.0
63 42 0.00 0.0
48 35 0.00 0.0
54 25 0.00 0.0
56 25 n/a 0.0
48 39 n/a 0.0
46 34 0.25 0.0
58 27 0.00 0.0
55 44 0.00 0.0
46 20 0.50 0.0
42 18 0.00 0.0
50 22 0.00 0.0
73 35 n/a 0.0
72 50 n/a 0.0
64 35 0.00 0.0
55 36 n/a 0.0
60 30 n/a 0.0
63 33 0.00 0.0
65 43 0.00 0.0
59 36 0.00 0.0
63 45 n/a 0.0
58 44 n/a 0.0
59 30 0.13 0.0
59 38 n/a 0.0
59 40 n/a 0.0
66 36 n/a 0.0
76 50 n/a 0.0
71 56 1.60 0.0
56 43 0.01 0.0
May 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
43 32 0.05 0.0
61 33 0.00 0.0
64 30 0.00 0.0
63 38 n/a 0.0
81 43 n/a 0.0
72 45 n/a 0.0
60 51 n/a 0.0
69 47 0.12 0.0
69 43 0.00 0.0
67 52 0.00 0.0
73 40 0.00 0.0
88 52 0.00 0.0
91 60 0.00 0.0
84 50 n/a 0.0
50 36 n/a 0.0
66 39 0.00 0.0
77 45 0.00 0.0
65 50 n/a 0.0
65 49 n/a 0.0
77 42 0.05 0.0
78 58 0.00 0.0
74 48 0.00 0.0
73 42 0.00 0.0
70 45 n/a 0.0
66 47 n/a 0.0
68 40 0.00 0.0
70 45 n/a 0.0
68 51 n/a 0.0
75 47 0.03 0.0
79 48 0.00 0.0
80 49 0.00 0.0
June 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
88 52 0.00 0.0
90 63 0.00 0.0
90 64 n/a 0.0
83 67 n/a 0.0
84 61 0.00 0.0
93 68 0.00 0.0
82 66 0.00 0.0
77 62 0.00 0.0
87 59 n/a 0.0
77 60 n/a 0.0
76 55 n/a 0.0
76 60 n/a 0.0
88 62 0.00 0.0
88 62 0.00 0.0
87 61 0.00 0.0
94 51 0.00 0.0
96 67 0.00 0.0
98 72 0.00 0.0
79 57 0.00 0.0
76 50 0.00 0.0
80 54 0.00 0.0
97 70 0.00 0.0
83 67 1.68 0.0
75 56 0.00 0.0
78 57 0.00 0.0
81 58 0.00 0.0
85 58 0.07 0.0
84 61 0.52 0.0
79 50 0.00 0.0
87 58 0.00 0.0
July 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
80 57 0.00 0.0
77 50 0.00 0.0
80 49 0.00 0.0
86 51 0.00 0.0
88 56 0.00 0.0
90 56 0.00 0.0
93 63 0.00 0.0
90 60 0.00 0.0
95 67 0.00 0.0
99 66 n/a 0.0
79 64 n/a 0.0
73 53 0.02 0.0
79 50 0.00 0.0
89 57 0.00 0.0
83 65 n/a 0.0
82 55 n/a 0.0
85 59 0.00 0.0
102 67 0.00 0.0
104 73 0.00 0.0
98 74 n/a 0.0
95 68 n/a 0.0
97 69 0.00 0.0
99 71 0.00 0.0
103 75 0.00 0.0
98 76 n/a 0.0
80 66 n/a 0.0
88 67 0.67 0.0
91 75 0.01 0.0
87 69 0.95 0.0
88 69 1.95 0.0
84 71 n/a 0.0
August 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
88 63 n/a 0.0
95 71 0.06 0.0
86 72 0.00 0.0
88 66 n/a 0.0
83 65 n/a 0.0
81 55 0.00 0.0
82 54 0.00 0.0
83 59 n/a 0.0
75 64 n/a 0.0
71 66 0.37 0.0
80 66 0.28 0.0
86 69 n/a 0.0
81 67 n/a 0.0
83 69 n/a 0.0
88 67 n/a 0.0
83 68 n/a 0.0
80 69 n/a 0.0
75 60 0.00 0.0
69 49 0.00 0.0
74 43 0.00 0.0
80 49 n/a 0.0
77 56 n/a 0.0
71 50 n/a 0.0
65 52 n/a 0.0
84 56 0.20 0.0
75 67 0.72 0.0
73 65 0.15 0.0
76 62 0.07 0.0
81 58 0.00 0.0
73 54 0.00 0.0
72 54 0.00 0.0
September 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
77 50 0.00 0.0
82 51 0.00 0.0
85 56 0.00 0.0
86 56 0.00 0.0
86 59 0.00 0.0
76 61 0.00 0.0
91 64 0.00 0.0
83 65 n/a 0.0
75 56 n/a 0.0
65 41 0.00 0.0
58 41 0.00 0.0
74 37 0.00 0.0
76 48 0.00 0.0
72 43 0.00 0.0
72 42 0.00 0.0
76 53 0.00 0.0
85 54 0.00 0.0
88 65 0.00 0.0
87 66 0.00 0.0
87 61 0.00 0.0
87 61 n/a 0.0
80 65 n/a 0.0
75 65 0.06 0.0
71 50 1.15 0.0
60 35 0.00 0.0
66 34 0.00 0.0
71 41 0.00 0.0
75 41 0.00 0.0
76 48 0.00 0.0
73 41 0.00 0.0
October 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
72 44 0.00 0.0
71 41 0.00 0.0
76 51 n/a 0.0
69 54 n/a 0.0
80 45 0.06 0.0
64 54 0.58 0.0
63 42 0.00 0.0
64 36 0.00 0.0
70 38 0.00 0.0
63 46 n/a 0.0
75 43 n/a 0.0
77 54 0.00 0.0
69 40 0.00 0.0
59 47 n/a 0.0
53 33 n/a 0.0
69 34 0.00 0.0
58 39 0.00 0.0
57 38 0.00 0.0
65 38 0.00 0.0
65 38 0.00 0.0
67 41 0.00 0.0
80 48 0.00 0.0
77 42 0.00 0.0
65 43 0.00 0.0
62 40 0.00 0.0
74 46 0.00 0.0
80 50 0.00 0.0
73 58 n/a 0.0
64 48 n/a 0.0
64 36 0.00 0.0
63 46 n/a 0.0
November 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
59 46 n/a 0.0
60 33 0.00 0.0
71 36 0.00 0.0
64 49 n/a 0.0
49 39 n/a 0.0
44 29 0.00 0.0
49 23 0.00 0.0
47 28 n/a 0.0
45 42 n/a 0.0
48 43 0.24 0.0
53 15 0.72 n/a
15 6 0.20 n/a
19 2 0.00 0.0
18 2 0.00 0.0
25 0 0.00 0.0
46 16 0.00 0.0
48 30 0.00 0.0
53 25 0.00 0.0
53 37 0.00 0.0
38 32 0.00 0.0
51 34 0.70 0.0
36 29 0.00 0.0
36 29 0.00 0.0
41 22 0.00 0.0
39 23 0.00 0.0
36 29 n/a n/a
30 16 n/a n/a
25 4 n/a n/a
34 6 n/a n/a
29 19 0.00 0.0
December 1940 Waterloo Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
19 2 0.00 0.0
16 0 0.00 0.0
13 -12 0.00 0.0
37 13 0.00 0.0
27 9 0.00 0.0
49 26 0.00 0.0
40 22 0.00 0.0
45 19 0.00 0.0
52 30 0.00 0.0
41 24 0.00 0.0
29 20 0.00 0.0
29 18 0.00 0.0
18 -1 0.12 1.2
22 n/a n/a n/a
32 20 n/a n/a
32 23 0.90 9.0
23 10 0.11 1.1
33 21 0.00 0.0
35 32 0.00 0.0
33 27 0.00 0.0
42 14 0.00 0.0
40 21 0.00 0.0
38 29 0.00 0.0
48 35 0.00 0.0
45 38 0.00 0.0
40 32 0.00 0.0
35 31 0.00 0.0
35 31 n/a 0.0
36 31 n/a 0.0
36 32 n/a n/a
34 31 n/a n/a
Weather Station Details
Years Station Coordinates
1950–2024 Waterloo Municipal Airport location
1895–1950 Waterloo location