- >>Weather by month // weather averages Portland
- >>Climate graph // Weather by Month Portland
- >>average temperature by month Portland
- >>Weather Portland
The given location is in the northern hemisphere. Summer begins here at the end of June and ends in September. The months of summer are: June, July, August, September.
Climate graph // Weather by Month Portland
Precipitation is the lowest in July, with an average of 14 mm | 0.6 inch. The greatest amount of precipitation occurs in December, with an average of 197 mm | 7.8 inch.
average temperature by month Portland
At an average temperature of 20.5 °C | 68.8 °F, August is the hottest month of the year. The lowest average temperatures in the year occur in December, when it is around 4.0 °C | 39.3 °F.
Weather by month // weather averages Portland
| Avg. Temperature °C (°F) | Min. Temperature °C (°F) | Max. Temperature °C (°F) | Precipitation / Rainfall mm (in) | Humidity (%) | Rainy days (d) | avg. Sun hours (hours) | |
|---|---|---|---|---|---|---|---|
| January |
4.3 (39.7) |
1.6 (34.9) |
8.3 (47) |
173 (6.8) |
84% | 13 | 5.0 |
| February |
5 (41) |
1.8 (35.2) |
9.9 (49.9) |
137 (5.4) |
82% | 11 | 5.0 |
| March |
7.1 (44.8) |
3.4 (38.1) |
12.5 (54.6) |
151 (5.9) |
80% | 14 | 6.0 |
| April |
9.5 (49) |
5.2 (41.3) |
15.4 (59.7) |
123 (4.8) |
74% | 13 | 8.0 |
| May |
13.1 (55.6) |
8.4 (47.1) |
19.4 (66.9) |
75 (3) |
69% | 9 | 9.0 |
| June |
16.2 (61.1) |
11.1 (52) |
22.8 (73) |
48 (1.9) |
66% | 7 | 9.0 |
| July |
20 (68.1) |
13.7 (56.6) |
28.1 (82.5) |
14 (0.6) |
56% | 2 | 10.0 |
| August |
20.5 (68.8) |
14.3 (57.8) |
28.6 (83.5) |
17 (0.7) |
56% | 2 | 10.0 |
| September |
17.2 (63) |
11.9 (53.5) |
24.6 (76.3) |
42 (1.7) |
61% | 4 | 8.0 |
| October |
11.8 (53.3) |
8.1 (46.5) |
17.4 (63.3) |
113 (4.4) |
76% | 10 | 6.0 |
| November |
7 (44.6) |
4.2 (39.5) |
11.1 (52) |
177 (7) |
84% | 13 | 5.0 |
| December |
4 (39.3) |
1.6 (34.9) |
7.5 (45.5) |
197 (7.8) |
85% | 14 | 4.0 |
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature °C (°F) |
4.3 °C (39.7) °F |
5 °C (41) °F |
7.1 °C (44.8) °F |
9.5 °C (49) °F |
13.1 °C (55.6) °F |
16.2 °C (61.1) °F |
20 °C (68.1) °F |
20.5 °C (68.8) °F |
17.2 °C (63) °F |
11.8 °C (53.3) °F |
7 °C (44.6) °F |
4 °C (39.3) °F |
| Min. Temperature °C (°F) |
1.6 °C (34.9) °F |
1.8 °C (35.2) °F |
3.4 °C (38.1) °F |
5.2 °C (41.3) °F |
8.4 °C (47.1) °F |
11.1 °C (52) °F |
13.7 °C (56.6) °F |
14.3 °C (57.8) °F |
11.9 °C (53.5) °F |
8.1 °C (46.5) °F |
4.2 °C (39.5) °F |
1.6 °C (34.9) °F |
| Max. Temperature °C (°F) |
8.3 °C (47) °F |
9.9 °C (49.9) °F |
12.5 °C (54.6) °F |
15.4 °C (59.7) °F |
19.4 °C (66.9) °F |
22.8 °C (73) °F |
28.1 °C (82.5) °F |
28.6 °C (83.5) °F |
24.6 °C (76.3) °F |
17.4 °C (63.3) °F |
11.1 °C (52) °F |
7.5 °C (45.5) °F |
| Precipitation / Rainfall mm (in) |
173 (6) |
137 (5) |
151 (5) |
123 (4) |
75 (2) |
48 (1) |
14 (0) |
17 (0) |
42 (1) |
113 (4) |
177 (6) |
197 (7) |
| Humidity(%) | 84% | 82% | 80% | 74% | 69% | 66% | 56% | 56% | 61% | 76% | 84% | 85% |
| Rainy days (d) | 13 | 11 | 13 | 12 | 9 | 7 | 2 | 2 | 4 | 10 | 13 | 13 |
| avg. Sun hours (hours) | 4.6 | 5.4 | 6.3 | 7.6 | 8.5 | 8.9 | 10.2 | 9.7 | 8.4 | 6.4 | 5.0 | 4.2 |
Data: 1991 - 2021 Min. Temperature °C (°F), Max. Temperature °C (°F), Precipitation / Rainfall mm (in), Humidity, Rainy days. Data: 1999 - 2019: avg. Sun hours
Between the driest and wettest months, the difference in precipitation is 183 mm | 7 inch. The variation in temperatures throughout the year is 16.4 °C | 29.6 °F.
The month with the highest relative humidity is December (84.99 %). The month with the lowest relative humidity is August (55.75 percent). The month with the most rainy days is December (17.87 days). The month with the fewest rainy days is July (3.20 days).
Portland weather and climate for every month
Hours of sunshine in Portland
- avg. hours of sun
- Total hours of sun
In Portland, the month that is graced with the most daily hours of sunshine is July. This month sees an average of 10.22 hours of sunshine. In total, there are 316.73 hours of sunshine throughout July.
In Portland, the month that experiences the lowest number of daily sunshine hours is January. The average duration of sunlight during this period amounts to approximately 4.17 hours per day, resulting in a total sum of 129.15 sunshine hours throughout the entire month.
In Portland, the sun shines for an average of 2587.98 hours per year. That comes out to 215.66 hours of sunshine each month.
Airport close to Portland
The closest Airports of Portland are: Portland International Airport (PDX) 9.92km,Eugene Airport (EUG) 161.45km,Roberts Field (RDM) 184.35km
You can reach Portland from this Cities by Plane: Detroit (DTW), Honolulu (HNL), Dallas (DFW), San Francisco (SFO), Houston (IAH), Las Vegas (LAS), New York (JFK), Anchorage (ANC), Salt Lake City (SLC), Reno (RNO), Sacramento (SMF), Phoenix (AZA), Oakland (OAK), Albuquerque (ABQ), Denver (DEN), Minneapolis (MSP), Chicago (MDW), Atlanta (ATL), Charlotte (CLT), Philadelphia (PHL)