Climateby Month

Bangor, ME weather in August

NOAA 1991-2020 normals and daily records · Bangor all year

Expect mild weather with some rain in Bangor in August, with highs near 79°F and lows near 57°F. Rain falls on about 10 days. It is one of the warmest months in Bangor. Great for outdoor plans.

Normal high
79°F
Normal low
57°F
Wet days
10
3.1 in total
Muggy days
2
dew point 65°F+

How August changes from start to finish

Normal values at the start and end of August
August 1August 31
Normal high81°F77°F
Normal low59°F54°F
Chance of a wet day33%30%
Sunrise / sunset5:21 am / 8:01 pm5:56 am / 7:14 pm
Daylight14.7 h13.3 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F15 of 31
  • Hot dayshigh 90°F or more2 of 31
  • Muggy daysdaily mean dew point 65°F or more2 of 31
  • Wet daysat least 0.01 in of rain or melted snow10 of 31
  • Notable rainat least 0.10 in6 of 31
  • Freezing nightslow 32°F or below0 of 31
  • Snow on the groundsnow depth 1 in or more0 of 31

Average days per August, counted from daily records for each year 1991-2020.

Rain in August

Normal precipitation is 3.1 in; a dry August brings about 1.9 in and a wet one about 3.4 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How August varies from year to year

  • Warmest August, 1991-20202002: average high 83°F
  • Coolest August2008: average high 75°F
  • Wettest August2011: 8.3 in
  • Driest August1995: 0.6 in
  • Highest reading97°F (August 31, 2010)
  • Lowest reading39°F (August 25, 2001)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

August compared with July and September

JulyAugustSeptember
Normal high80°F79°F71°F
Normal low59°F57°F49°F
Wet days11109
Comfortable days101518
Daylight15.2 h14.0 h12.5 h

Highs change by -1°F from July and -8°F into September.

How Bangor ranks in August

  • Normal high317th warmest of 378 cities; 1st of 5 in Maine
  • Wet days245th driest of 378
  • Comfortable days29th most of 341

What to pack for Bangor in August

  • A rain jacket or umbrella – rain on about 10 days
  • Sunglasses and sunscreen – about 14.0 hours of daylight and highs near 79°F

Heating and cooling

August has 26 heating degree days and 125 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.

Questions

How hot is Bangor in August?

The normal high is 79°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 97°F (August 31, 2010).

Does it rain a lot in Bangor in August?

About 10 days in August have at least 0.01 in of precipitation, and the normal total is 3.1 in. The wettest August in 1991-2020 was in 2011 (8.3 in); the driest was in 1995 (0.6 in).

Is August a good time to visit Bangor?

August ranks 4th of 12 months on our comfort score for Bangor (71 out of 100). It has about 15 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 and frost dates: Bangor Intl Airport (USW00014606), 2.0 mi W of the city center, 148 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Millinocket Municipal Arpt (726196-14610), 59 mi N of the city center, 401 ft (286 ft higher than the city). Hourly observations, 1991-2020.
  • Not available for this location: humidity and wind by hour and cloud cover (no station close enough or similar enough in elevation).