Portland, ME 14-Day Forecast
Maine, United States 🇺🇸
82°
Sunny right now
Today: high 83°, low 66°
Updated just now
Portland weather for the next 14 days
Friday, August 7
Sunny High 82° Low 70°Precipitation
20%
· 0.01 in
Max wind
9 mph
Humidity
75%
UV index
8 - High
Sunrise / sunset
05:36 AM / 07:56 PM
Saturday, August 8
Patchy rain nearby High 72° Low 66°Precipitation
88%
· 0.61 in
Max wind
9 mph
Humidity
91%
UV index
7 - High
Sunrise / sunset
05:37 AM / 07:55 PM
Sunday, August 9
Sunny High 85° Low 66°Precipitation
57%
· 0.04 in
Max wind
9 mph
Humidity
73%
UV index
7 - High
Sunrise / sunset
05:39 AM / 07:54 PM
Monday, August 10
Sunny High 77° Low 67°Precipitation
6%
· 0.0 in
Max wind
12 mph
Humidity
68%
UV index
7 - High
Sunrise / sunset
05:40 AM / 07:52 PM
Tuesday, August 11
Sunny High 80° Low 67°Precipitation
57%
· 0.09 in
Max wind
11 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
05:41 AM / 07:51 PM
Wednesday, August 12
Partly Cloudy High 69° Low 63°Precipitation
15%
· 0.0 in
Max wind
12 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
05:42 AM / 07:49 PM
Thursday, August 13
Sunny High 71° Low 62°Precipitation
42%
· 0.02 in
Max wind
15 mph
Humidity
85%
UV index
6 - High
Sunrise / sunset
05:43 AM / 07:48 PM
Friday, August 14
Patchy rain nearby High 76° Low 66°Precipitation
68%
· 0.09 in
Max wind
12 mph
Humidity
77%
UV index
6 - High
Sunrise / sunset
05:44 AM / 07:46 PM
Saturday, August 15
Sunny High 74° Low 59°Precipitation
4%
· 0.0 in
Max wind
11 mph
Humidity
59%
UV index
6 - High
Sunrise / sunset
05:45 AM / 07:45 PM
Sunday, August 16
Sunny High 74° Low 63°Precipitation
6%
· 0.0 in
Max wind
8 mph
Humidity
65%
UV index
6 - High
Sunrise / sunset
05:46 AM / 07:43 PM
Monday, August 17
Partly Cloudy High 66° Low 60°Precipitation
79%
· 0.56 in
Max wind
10 mph
Humidity
78%
UV index
5 - Moderate
Sunrise / sunset
05:48 AM / 07:42 PM
Tuesday, August 18
Moderate rain High 64° Low 56°Precipitation
87%
· 0.95 in
Max wind
16 mph
Humidity
87%
UV index
5 - Moderate
Sunrise / sunset
05:49 AM / 07:40 PM
Wednesday, August 19
Partly Cloudy High 69° Low 59°Precipitation
5%
· 0.0 in
Max wind
8 mph
Humidity
59%
UV index
6 - High
Sunrise / sunset
05:50 AM / 07:39 PM
Portland 14-day outlook: the story
The warmest day of Portland's 14-day outlook is Sunday, August 9 with a high near 85°F (29°C); the coolest night comes Tuesday, August 18, dipping to 56°F (13°C). The trend points cooler: week two runs about 8°F below week one. Highs over the next two weeks average 78°F (26°C), right in line with the typical August high of 77°F (25°C).
Precipitation is most likely on Saturday 8, Sunday 9, Tuesday 11, Friday 14 and beyond; the wettest day looks like Tuesday, August 18 with about 0.95 in (24.2 mm) expected. For the weekend, expect Saturday 72°F (22°C) and patchy rain nearby / Sunday 85°F (29°C) and sunny.
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, August 18.
What will be the warmest day in Portland over the next 14 days?
Sunday, August 9, with a forecast high near 85°F (29°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