Portland, ME 14-Day Forecast
Maine, United States 🇺🇸
75°
Sunny right now
Today: high 83°, low 60°
Updated 6 hours ago
Portland weather for the next 14 days
Thursday, August 27
Overcast High 72° Low 68°Precipitation
78%
· 0.14 in
Max wind
20 mph
Humidity
82%
UV index
5 - Moderate
Sunrise / sunset
05:59 AM / 07:25 PM
Friday, August 28
Fog High 71° Low 67°Precipitation
90%
· 0.25 in
Max wind
16 mph
Humidity
94%
UV index
5 - Moderate
Sunrise / sunset
06:00 AM / 07:24 PM
Saturday, August 29
Overcast High 68° Low 61°Precipitation
11%
· 0.0 in
Max wind
14 mph
Humidity
69%
UV index
5 - Moderate
Sunrise / sunset
06:01 AM / 07:22 PM
Sunday, August 30
Overcast High 77° Low 59°Precipitation
10%
· 0.0 in
Max wind
18 mph
Humidity
66%
UV index
6 - High
Sunrise / sunset
06:02 AM / 07:20 PM
Monday, August 31
Overcast High 70° Low 63°Precipitation
15%
· 0.0 in
Max wind
11 mph
Humidity
75%
UV index
5 - Moderate
Sunrise / sunset
06:03 AM / 07:18 PM
Tuesday, September 1
Light rain shower High 66° Low 63°Precipitation
94%
· 0.68 in
Max wind
9 mph
Humidity
96%
UV index
4 - Moderate
Sunrise / sunset
06:04 AM / 07:17 PM
Wednesday, September 2
Light rain shower High 63° Low 59°Precipitation
92%
· 0.27 in
Max wind
17 mph
Humidity
98%
UV index
4 - Moderate
Sunrise / sunset
06:05 AM / 07:15 PM
Thursday, September 3
Patchy rain nearby High 63° Low 59°Precipitation
79%
· 0.06 in
Max wind
10 mph
Humidity
94%
UV index
4 - Moderate
Sunrise / sunset
06:07 AM / 07:13 PM
Friday, September 4
Overcast High 64° Low 61°Precipitation
51%
· 0.02 in
Max wind
16 mph
Humidity
84%
UV index
5 - Moderate
Sunrise / sunset
06:08 AM / 07:11 PM
Saturday, September 5
Sunny High 62° Low 58°Precipitation
10%
· 0.0 in
Max wind
11 mph
Humidity
78%
UV index
5 - Moderate
Sunrise / sunset
06:09 AM / 07:10 PM
Sunday, September 6
Overcast High 62° Low 57°Precipitation
19%
· 0.0 in
Max wind
8 mph
Humidity
76%
UV index
5 - Moderate
Sunrise / sunset
06:10 AM / 07:08 PM
Monday, September 7
Overcast High 64° Low 61°Precipitation
14%
· 0.0 in
Max wind
8 mph
Humidity
75%
UV index
5 - Moderate
Sunrise / sunset
06:11 AM / 07:06 PM
Tuesday, September 8
Overcast High 62° Low 57°Precipitation
10%
· 0.0 in
Max wind
10 mph
Humidity
66%
UV index
5 - Moderate
Sunrise / sunset
06:12 AM / 07:04 PM
Portland 14-day outlook: the story
The warmest day of Portland's 14-day outlook is Wednesday, August 26 with a high near 83°F (28°C); the coolest night comes Tuesday, September 8, dipping to 57°F (14°C). The trend points cooler: week two runs about 9°F below week one. Highs over the next two weeks average 72°F (22°C), about 5°F (3°C) below the typical August high of 77°F (25°C).
Precipitation is most likely on Thursday 27, Friday 28, Tuesday 1, Wednesday 2 and beyond; the wettest day looks like Tuesday, September 1 with about 0.68 in (17.2 mm) expected. For the weekend, expect Saturday 68°F (20°C) and overcast / Sunday 77°F (25°C) and overcast.
For typical conditions month by month, see the Portland climate & average temperatures guide.
Portland forecast questions
Will it rain in Portland this week?
The forecast currently shows meaningful precipitation chances on 6 of the next 14 days, peaking around Tuesday, September 1.
What will be the warmest day in Portland over the next 14 days?
Wednesday, August 26, with a forecast high near 83°F (28°C).
How accurate is a 14-day forecast for Portland?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Portland by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 33° | 19° | 10 | 4.1 in | 5.9 h/day | 68% |
| February | 35° | 18° | 9 | 3.2 in | 6.9 h/day | 69% |
| March | 42° | 26° | 11 | 3.8 in | 8.0 h/day | 67% |
| April | 51° | 36° | 11 | 4.5 in | 8.2 h/day | 70% |
| May | 63° | 47° | 9 | 2.7 in | 10.1 h/day | 72% |
| June | 72° | 57° | 11 | 3.8 in | 11.1 h/day | 76% |
| July | 78° | 64° | 10 | 3.8 in | 11.3 h/day | 77% |
| August | 77° | 63° | 11 | 3.6 in | 10.8 h/day | 78% |
| September | 71° | 57° | 8 | 3.4 in | 9.4 h/day | 78% |
| October | 60° | 47° | 9 | 4.5 in | 7.1 h/day | 77% |
| November | 47° | 35° | 9 | 3.8 in | 6.5 h/day | 71% |
| December | 38° | 26° | 11 | 5.0 in | 5.7 h/day | 72% |
14-day forecasts nearby