Portland Intl Jetport, Maine
ID: USW00014764 Latitude: 43.6497 Longitude: -70.3003
Elevation: 44.9 feet ( 13.7 meters)
Source: NOAA Climate Normals 1991-2020
Precipitation Total: 48.12 in., 18.94 cm.
Monthly Data Table for Portland Intl Jetport, Maine
Monthly Data from NOAA Monthly Normals 2006-2020
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
33.6 |
35.2 |
42.7 |
54.2 |
64.9 |
72.9 |
80.1 |
78.7 |
71.8 |
60.0 |
48.7 |
38.2 |
Minimum Temperature |
°F |
17.2 |
17.8 |
26.2 |
36.0 |
46.6 |
55.5 |
62.4 |
60.2 |
52.9 |
42.4 |
31.9 |
22.9 |
Heating Degree Days |
°F |
1227.5 |
1077.9 |
947.1 |
597.7 |
297.8 |
85.5 |
6.3 |
15.5 |
130.2 |
430.1 |
741.0 |
1067.8 |
Cooling Degree Days |
°F |
0.0 |
0.0 |
0.1 |
0.7 |
11.0 |
61.5 |
199.9 |
153.4 |
50.7 |
2.3 |
0.0 |
0.0 |
Precipitation |
I |
3.4 |
4.0 |
3.7 |
4.5 |
3.9 |
5.2 |
3.9 |
4.0 |
3.5 |
5.3 |
4.4 |
5.0 |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
0.9 |
1.8 |
5.9 |
12.3 |
18.3 |
22.7 |
26.7 |
25.9 |
22.1 |
15.6 |
9.3 |
3.4 |
Minimum Temperature |
°C |
-8.2 |
-7.9 |
-3.2 |
2.2 |
8.1 |
13.1 |
16.9 |
15.7 |
11.6 |
5.8 |
-0.1 |
-5.1 |
Heating Degree Days |
°C |
664.2 |
581.1 |
508.4 |
314.3 |
147.7 |
29.7 |
-14.3 |
-9.2 |
54.6 |
221.2 |
393.9 |
575.4 |
Cooling Degree Days |
°C |
-17.8 |
-17.8 |
-17.7 |
-17.4 |
-11.7 |
16.4 |
93.3 |
67.4 |
10.4 |
-16.5 |
-17.8 |
-17.8 |
Precipitation |
M |
8.7 |
10.2 |
9.4 |
11.5 |
9.8 |
13.3 |
9.9 |
10.1 |
9.0 |
13.4 |
11.3 |
12.7 |