Portland, ME weather in July
In July, Portland sees highs around 80°F and lows around 61°F: warm, with frequent rain. Expect about 11 wet days. It is one of the warmest months in Portland. Good for outdoor plans.
- Normal high
- 80°F
- Normal low
- 61°F
- Wet days
- 11
- 3.4 in total
- Muggy days
- 7
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 78°F | 80°F |
| Normal low | 59°F | 62°F |
| Chance of a wet day | 36% | 33% |
| Sunrise / sunset | 5:03 am / 8:26 pm | 5:29 am / 8:05 pm |
| Daylight | 15.4 h | 14.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical July day
- 6 am65°Fdew point 60°F
- 9 am73°Fdew point 61°F
- Noon77°Fdew point 61°F
- 3 pm76°Fdew point 61°F
- 6 pm73°Fdew point 60°F
- 9 pm68°Fdew point 60°F
NOAA hourly normals (local standard time) from Portland Intl Jetport (2 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph12 of 31
- Hot dayshigh 90°F or more2 of 31
- Muggy daysdaily mean dew point 65°F or more7 of 31
- Wet daysat least 0.01 in of rain or melted snow11 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 3.4 in; a dry July brings about 2.1 in and a wet one about 4.3 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20202019: average high 83°F
- Coolest July2009: average high 74°F
- Wettest July2009: 8.6 in
- Driest July2017: 1.1 in
- Highest reading100°F (July 22, 2011)
- Lowest reading47°F (July 11, 2002)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 74°F | 80°F | 79°F |
| Normal low | 55°F | 61°F | 60°F |
| Wet days | 12 | 11 | 9 |
| Comfortable days | 15 | 10 | 12 |
| Daylight | 15.4 h | 15.1 h | 13.9 h |
Highs change by +6°F from June and -1°F into August.
Nearby alternatives in July
- Warmer: Lowell, MA89 mi · high 85°F · 10 wet days
- Drier: Edgartown, MA158 mi · high 80°F · 8 wet days
- Cooler: Lake Placid, NY190 mi · high 74°F · 14 wet days
How Portland ranks in July
- Normal high329th warmest of 378 cities; 2nd of 5 in Maine
- Wet days267th driest of 378
- Comfortable days52nd most of 340
What to pack for Portland in July
- A rain jacket or umbrella – rain on about 11 days
- A swimsuit – about 12 beach days
- Sunglasses and sunscreen – about 15.1 hours of daylight and highs near 80°F
Heating and cooling
July has 10 heating degree days and 176 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Portland in July?
The normal high is 80°F and the normal low is 61°F. From 1991 to 2020 the hottest July reading was 100°F (July 22, 2011).
Does it rain a lot in Portland in July?
About 11 days in July have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest July in 1991-2020 was in 2009 (8.6 in); the driest was in 2017 (1.1 in).
Is July a good time to visit Portland?
July ranks 5th of 12 months on our comfort score for Portland (66 out of 100). It has about 10 comfortable days and about 2 days at 90°F or hotter. The best months are June and September.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Portland Intl Jetport (USW00014764), 2.4 mi WSW of the city center, 45 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Portland International Jetport Airport (726060-14764), 2.8 mi WSW of the city center, 44 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).