May 2026 Weather | South Portland, Maine

Fri 5/1
Rainy Weather
Day 57°
Night 36°
61
Sat 5/2
Rainy Weather
Day 55°
Night 39°
49
Sun 5/3
Cloudy Weather
Day 52°
Night 37°
25
Mon 5/4
Cloudy Weather
Day 57°
Night 41°
18
Tue 5/5
Rainy Weather
Day 55°
Night 45°
58
Wed 5/6
Cloudy Weather
Day 59°
Night 48°
1
Thu 5/7
Rainy Weather
Day 59°
Night 45°
71
Fri 5/8
Rainy Weather
Day 55°
Night 45°
75
Sat 5/9
Partly Sunny with Showers
Day 57°
Night 43°
56
Sun 5/10
Cloudy Weather
Day 59°
Night 45°
2
Mon 5/11
Rainy Weather
Day 61°
Night 43°
55
Tue 5/12
Cloudy Weather
Day 59°
Night 45°
25
Wed 5/13
Cloudy Weather
Day 59°
Night 45°
25
Thu 5/14
Cloudy Weather
Day 59°
Night 46°
Fri 5/15
Sunny Weather
Day 61°
Night 46°
Sat 5/16
Cloudy Weather
Day 61°
Night 45°
Sun 5/17
Cloudy Weather
Day 59°
Night 43°
Mon 5/18
Rainy Weather
Day 61°
Night 50°
Tue 5/19
Cloudy Weather
Day 59°
Night 50°
Wed 5/20
Cloudy Weather
Day 63°
Night 48°
Thu 5/21
Rainy Weather
Day 66°
Night 52°
Fri 5/22
Rainy Weather
Day 68°
Night 48°
Sat 5/23
Rainy Weather
Day 61°
Night 50°
Sun 5/24
Cloudy Weather
Day 59°
Night 50°
Mon 5/25
Cloudy Weather
Day 63°
Night 48°
Tue 5/26
Cloudy Weather
Day 64°
Night 46°
Wed 5/27
Cloudy Weather
Day 63°
Night 48°
Thu 5/28
Rainy Weather
Day 61°
Night 48°
Fri 5/29
Rainy Weather
Day 61°
Night 52°
Sat 5/30
Cloudy Weather
Day 64°
Night 52°
Sun 5/31
Cloudy Weather
Day 63°
Night 50°