Portland weather by month
Average highs run from 32°F in January to 80°F in July, and January nights average 16°F. It gets 48 inches of rain and melted snow a year and 69 inches of snow. Nights drop below freezing about 144 times a year. The most comfortable months are May to September.
Best time to visit Portland
For comfortable weather, go in May to September. In those months the average high stays between 62°F and 86°F, nights average 42°F or warmer, and rain stays under 4.5 inches for the month.
Month by month
| Month | High | Low | Precip. | Snow | Wet days | Days 90°F+ | Nights below 32°F | Feels |
|---|---|---|---|---|---|---|---|---|
| January | 32°F | 16°F | 3.5 in | 18.6 in | 7 | 0 | 29 | very cold |
| February | 35°F | 17°F | 3.5 in | 16.6 in | 7 | 0 | 26 | cold |
| March | 42°F | 26°F | 4.1 in | 13.6 in | 7 | 0 | 25 | cold |
| April | 54°F | 35°F | 4.4 in | 2.8 in | 7 | 0 | 12 | cool |
| May | 64°F | 46°F | 3.7 in | 0.0 in | 7 | 0 | 1 | mild |
| June | 74°F | 55°F | 4.2 in | 0.0 in | 7 | 1 | 0 | mild |
| July | 80°F | 61°F | 3.4 in | 0.0 in | 7 | 2 | 0 | warm |
| August | 79°F | 60°F | 3.6 in | 0.0 in | 5 | 1 | 0 | warm |
| September | 71°F | 52°F | 3.8 in | 0.0 in | 5 | 1 | 0 | mild |
| October | 60°F | 41°F | 5.3 in | 0.2 in | 7 | 0 | 6 | cool |
| November | 48°F | 32°F | 4.3 in | 2.3 in | 7 | 0 | 18 | cool |
| December | 38°F | 22°F | 4.5 in | 14.6 in | 8 | 0 | 27 | cold |
| Year | 56°F avg | 39°F avg | 48.1 in | 68.7 in | 80 | 5 | 144 |
"Wet days" are days with at least 0.1 inch of precipitation. "Feels" is a plain-language label for the average high. Normals for 1991-2020 from NOAA NCEI, station Portland Intl. Jetport, ME (USW00014764), 2.4 miles from the city center. Averages describe typical conditions, not a forecast.
Sunrise, sunset and daylight in Portland
The shortest day is December 21, with 8h 55m of daylight; the longest is June 21, with 15h 26m. The earliest sunset comes around December 6 (4:03 pm) and the latest around June 22 (8:26 pm). The sun sets after 8 pm on 80 days a year.
| On the 15th of | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:11 am | 4:29 pm | 9h 18m |
| February | 6:39 am | 5:11 pm | 10h 31m |
| March | 6:53 am | 6:47 pm | 11h 54m |
| April | 5:58 am | 7:24 pm | 13h 26m |
| May | 5:16 am | 7:59 pm | 14h 43m |
| June | 4:59 am | 8:24 pm | 15h 25m |
| July | 5:13 am | 8:19 pm | 15h 06m |
| August | 5:45 am | 7:44 pm | 13h 58m |
| September | 6:20 am | 6:50 pm | 12h 30m |
| October | 6:55 am | 5:57 pm | 11h 02m |
| November | 6:35 am | 4:15 pm | 9h 40m |
| December | 7:07 am | 4:04 pm | 8h 57m |
Calculated for 2026 at the center of Portland with NOAA's solar equations, in local clock time (Eastern Time, including daylight saving time where it applies). Times shift by a minute or two from year to year.
Is Portland getting warmer?
The last 10 years averaged 2.9°F warmer than the 20th century. See the climate stripes for Portland.Frequently asked questions
What is the warmest month in Portland?
July is the warmest month, with an average high of 80°F and an average low of 61°F (NOAA 1991-2020 normals).
What is the coldest month in Portland?
January is the coldest, with average lows of 16°F and highs of 32°F.
What is the rainiest month in Portland?
October gets the most precipitation, 5.3 inches on average. July is the driest at 3.4 inches.
Does it snow in Portland?
Yes. Portland averages 69 inches of snow a year.
When is the best time to visit Portland?
For comfortable weather, May to September. Those months average highs between 62 and 86°F with lows of 42°F or more and modest rain.
Thinking of moving to Portland?
See what homes, rent and everyday prices cost, who lives there and how it compares with nearby cities on the full Portland profile.
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