September 2026 Weather | Portland, Maine

Tue 9/1
Cloudy Weather
Day 72°
Night 61°
Wed 9/2
Rainy Weather
Day 75°
Night 63°
Thu 9/3
Sunny Weather
Day 79°
Night 61°
Fri 9/4
Cloudy Weather
Day 75°
Night 61°
Sat 9/5
Sunny Weather
Day 75°
Night 61°
Sun 9/6
Cloudy Weather
Day 73°
Night 61°
Mon 9/7
Cloudy Weather
Day 72°
Night 59°
Tue 9/8
Rainy Weather
Day 73°
Night 61°
Wed 9/9
Cloudy Weather
Day 75°
Night 61°
Thu 9/10
Cloudy Weather
Day 73°
Night 59°
Fri 9/11
Cloudy Weather
Day 73°
Night 57°
Sat 9/12
Cloudy Weather
Day 75°
Night 59°
Sun 9/13
Cloudy Weather
Day 75°
Night 59°
Mon 9/14
Cloudy Weather
Day 75°
Night 57°
Tue 9/15
Stormy Weather
Day 75°
Night 57°
1
Wed 9/16
Cloudy Weather
Day 72°
Night 57°
Thu 9/17
Stormy Weather
Day 66°
Night 55°
87
Fri 9/18
Rainy Weather
Day 64°
Night 55°
4
Sat 9/19
Sunny Weather
Day 64°
Night 55°
Sun 9/20
Sunny Weather
Day 72°
Night 54°
0
Mon 9/21
Cloudy Weather
Day 68°
Night 50°
0
Tue 9/22
Sunny Weather
Day 66°
Night 46°
25
Wed 9/23
Sunny Weather
Day 63°
Night 46°
80
Thu 9/24
Cloudy Weather
Day 63°
Night 54°
55
Fri 9/25
Cloudy Weather
Day 63°
Night 52°
Sat 9/26
Cloudy Weather
Day 68°
Night 54°
4
Sun 9/27
Cloudy Weather
Day 70°
Night 46°
25
Mon 9/28
Cloudy Weather
Day 70°
Night 45°
0
Tue 9/29
Cloudy Weather
Day 64°
Night 52°
1
Wed 9/30
Rainy Weather
Day 61°
Night 46°
0