CLIMATE CHARTS
Lewistown, Montana
Latitude: 46.8847 Longitude: -110.2894
Elevation: 5069.9 feet (1545.3 meters)
This station does not report precipitation data.
Monthly Data Table for Lewistown, Montana
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
37.3 |
37.6 |
44.2 |
51.1 |
59.8 |
69.2 |
77.8 |
77.5 |
67.9 |
55.3 |
43.5 |
35.9 |
Minimum Temperature |
°F |
12.8 |
14.0 |
20.1 |
26.6 |
33.5 |
40.8 |
45.4 |
44.7 |
36.8 |
28.6 |
21.2 |
13.2 |
Heating Degree Days |
°F |
1239 |
1098 |
1018 |
785 |
569 |
300 |
117 |
137 |
386 |
717 |
980 |
1254 |
Cooling Degree Days |
°F |
0 |
0 |
0 |
0 |
0 |
0 |
12 |
15 |
6 |
2 |
0 |
0 |
Precipitation |
in. |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
2.9 |
3.1 |
6.8 |
10.6 |
15.4 |
20.7 |
25.4 |
25.3 |
19.9 |
12.9 |
6.4 |
2.2 |
Minimum Temperature |
°C |
-10.7 |
-10.0 |
-6.6 |
-3.0 |
0.8 |
4.9 |
7.4 |
7.1 |
2.7 |
-1.9 |
-6.0 |
-10.4 |
Heating Degree Days |
°C |
688 |
610 |
566 |
436 |
316 |
167 |
65 |
76 |
214 |
398 |
544 |
697 |
Cooling Degree Days |
°C |
0 |
0 |
0 |
0 |
0 |
0 |
7 |
8 |
3 |
1 |
0 |
0 |
Precipitation |
cm. |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |