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  About Mason City
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No matter what the season, Mason City is alive with music, art and restaurants, and a wealth of recreational activities. Mason City has a moderate climate and four distinct seasons. Average winter temperatures are 18.2 degrees Fahrenheit and average summer temperatures are 70.7 degrees Fahrenheit. Annual rainfall averages 31.4 inches and annual snowfall averages 37.8 inches.
Month
Avg. Daily High
Avg. Daily Low
Average Temperature
Avg. Precipitation
Avg. Snow
January
22.7 F
5.1 F
13.9 F
0.98 in.
8.4 in.
February
28.9 F
12.2 F
20.6 F
0.90 in.
7.1 in.
March
41.7 F
24.0 F
32.9 F
2.20 in.
7.0 in.
April
57.3 F
35.5 F
46.4 F
3.40 in.
2.0 in.
May
70.6 F
47.3 F
59.0 F
4.30 in.
0.0 in.
June
80.1 F
57.2 F
68.7 F
5.00 in.
0.0 in.
July
83.3 F
61.4 F
72.4 F
4.30 in.
0.0 in.
August
80.8 F
58.8 F
69.8 F
4.50 in.
0.0 in.
September
72.9 F
49.0 F
61.0 F
3.30 in.
0.0 in.
October
60.1 F
37.3 F
48.7 F
2.50 in.
0.4 in.
November
41.6 F
24.0 F
32.8 F
2.00 in.
3.8 in.
December
27.0 F
10.9 F
19.0 F
1.08 in.
9.3 in.