Lewistown Weather Information
Lewistown historical weather data by month.
Chance Of Sunshine
Annual chance of sunshine: 53.57142857%
Month
% Sunny
Clear Days
Partly Cloudy Days
Cloudy Days
January
46.67%
8
6
16
February
46.43%
7
6
15
March
45.16%
7
7
17
April
50.00%
8
7
15
May
48.39%
7
8
16
June
60.00%
7
11
12
July
67.74%
11
10
10
August
67.74%
11
10
10
September
61.29%
11
8
12
October
59.38%
12
7
13
November
46.67%
8
6
16
December
45.16%
8
6
17
Temperature
Rainfall
Sum Of Heating & Cooling Degree Days
