Portland, OR 14-Day Forecast
Oregon, United States 🇺🇸
64°
Partly Cloudy right now
Today: high 66°, low 53°
Updated 2 min ago
Portland weather for the next 14 days
Wednesday, September 16
Sunny High 81° Low 53°Precipitation
2%
· 0.0 in
Max wind
8 mph
Humidity
53%
UV index
5 - Moderate
Sunrise / sunset
06:50 AM / 07:20 PM
Thursday, September 17
Sunny High 82° Low 56°Precipitation
1%
· 0.0 in
Max wind
6 mph
Humidity
47%
UV index
5 - Moderate
Sunrise / sunset
06:51 AM / 07:18 PM
Friday, September 18
Sunny High 75° Low 55°Precipitation
3%
· 0.0 in
Max wind
4 mph
Humidity
58%
UV index
5 - Moderate
Sunrise / sunset
06:52 AM / 07:16 PM
Saturday, September 19
Sunny High 80° Low 54°Precipitation
6%
· 0.0 in
Max wind
5 mph
Humidity
57%
UV index
5 - Moderate
Sunrise / sunset
06:54 AM / 07:14 PM
Sunday, September 20
Overcast High 79° Low 58°Precipitation
12%
· 0.0 in
Max wind
5 mph
Humidity
54%
UV index
6 - High
Sunrise / sunset
06:55 AM / 07:12 PM
Monday, September 21
Sunny High 70° Low 55°Precipitation
6%
· 0.0 in
Max wind
9 mph
Humidity
60%
UV index
6 - High
Sunrise / sunset
06:56 AM / 07:10 PM
Tuesday, September 22
Sunny High 72° Low 51°Precipitation
6%
· 0.0 in
Max wind
8 mph
Humidity
59%
UV index
6 - High
Sunrise / sunset
06:57 AM / 07:08 PM
Wednesday, September 23
Sunny High 81° Low 52°Precipitation
2%
· 0.0 in
Max wind
9 mph
Humidity
50%
UV index
7 - High
Sunrise / sunset
06:59 AM / 07:07 PM
Thursday, September 24
Sunny High 83° Low 56°Precipitation
4%
· 0.0 in
Max wind
9 mph
Humidity
52%
UV index
7 - High
Sunrise / sunset
07:00 AM / 07:05 PM
Friday, September 25
Overcast High 85° Low 58°Precipitation
5%
· 0.0 in
Max wind
16 mph
Humidity
50%
UV index
7 - High
Sunrise / sunset
07:01 AM / 07:03 PM
Saturday, September 26
Sunny High 79° Low 59°Precipitation
2%
· 0.0 in
Max wind
13 mph
Humidity
24%
UV index
7 - High
Sunrise / sunset
07:02 AM / 07:01 PM
Sunday, September 27
Cloudy High 81° Low 57°Precipitation
4%
· 0.0 in
Max wind
4 mph
Humidity
28%
UV index
7 - High
Sunrise / sunset
07:04 AM / 06:59 PM
Monday, September 28
Sunny High 80° Low 59°Precipitation
3%
· 0.0 in
Max wind
2 mph
Humidity
32%
UV index
7 - High
Sunrise / sunset
07:05 AM / 06:57 PM
Portland 14-day outlook: the story
The warmest day of Portland's 14-day outlook is Friday, September 25 with a high near 85°F (30°C); the coolest night comes Tuesday, September 22, dipping to 51°F (10°C). The trend points warmer: week two runs about 4°F above week one. Highs over the next two weeks average 76°F (24°C), right in line with the typical September high of 75°F (24°C).
No day in the outlook currently carries a strong precipitation signal. For the weekend, expect Saturday 80°F (26°C) and sunny / Sunday 79°F (26°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?
No day in the current 14-day outlook shows a strong rain signal for Portland.
What will be the warmest day in Portland over the next 14 days?
Friday, September 25, with a forecast high near 85°F (30°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 | 47° | 36° | 19 | 7.5 in | 4.1 h/day | 85% |
| February | 48° | 35° | 16 | 5.9 in | 5.2 h/day | 83% |
| March | 54° | 38° | 17 | 5.4 in | 7.4 h/day | 80% |
| April | 59° | 42° | 15 | 4.4 in | 8.9 h/day | 76% |
| May | 67° | 48° | 11 | 2.8 in | 10.1 h/day | 73% |
| June | 75° | 53° | 8 | 2.2 in | 12.0 h/day | 66% |
| July | 83° | 58° | 2 | 0.3 in | 13.2 h/day | 58% |
| August | 84° | 59° | 3 | 0.5 in | 12.1 h/day | 59% |
| September | 75° | 54° | 8 | 2.5 in | 9.9 h/day | 68% |
| October | 63° | 47° | 12 | 5.4 in | 7.1 h/day | 79% |
| November | 52° | 40° | 17 | 7.5 in | 5.1 h/day | 84% |
| December | 46° | 36° | 19 | 8.9 in | 3.8 h/day | 86% |
14-day forecasts nearby