Bangor, ME weather in May
May in Bangor: mild, with frequent rain. Highs 66°F, lows 43°F, rain on about 12 days.
- Normal high
- 66°F
- Normal low
- 43°F
- Wet days
- 12
- 3.3 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 61°F | 70°F |
| Normal low | 38°F | 48°F |
| Chance of a wet day | 39% | 40% |
| Sunrise / sunset | 5:24 am / 7:39 pm | 4:52 am / 8:12 pm |
| Daylight | 14.3 h | 15.3 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°F14 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow12 of 31
- Notable rainat least 0.10 in8 of 31
- Freezing nightslow 32°F or below2 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 3.3 in; a dry May brings about 2.3 in and a wet one about 4.2 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more. Snow is very rare.
How May varies from year to year
- Warmest May, 1991-20202010: average high 71°F
- Coolest May2005: average high 58°F
- Wettest May2017: 6.4 in
- Driest May1992: 0.9 in
- Highest reading96°F (May 22, 1992)
- Lowest reading25°F (May 2, 2008)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 53°F | 66°F | 75°F |
| Normal low | 32°F | 43°F | 53°F |
| Wet days | 12 | 12 | 12 |
| Comfortable days | 3 | 14 | 17 |
| Daylight | 13.5 h | 14.8 h | 15.5 h |
Highs change by +13°F from April and +9°F into June.
How Bangor ranks in May
- Normal high333rd warmest of 378 cities; 1st of 5 in Maine
- Wet days291st driest of 378
- Comfortable days144th most of 339
What to pack for Bangor in May
- A rain jacket or umbrella – rain on about 12 days
Frost in May
The last spring frost typically comes around May 4; in 1 year in 10 it comes after May 17. All frost dates for Bangor.
Heating and cooling
May has 333 heating degree days and 7 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How cold is Bangor in May?
The normal high is 66°F and the normal low is 43°F. From 1991 to 2020 the coldest May reading was 25°F (May 2, 2008).
Does it rain a lot in Bangor in May?
About 12 days in May have at least 0.01 in of precipitation, and the normal total is 3.3 in. The wettest May in 1991-2020 was in 2017 (6.4 in); the driest was in 1992 (0.9 in).
Is May a good time to visit Bangor?
May ranks 3rd of 12 months on our comfort score for Bangor (71 out of 100). It has about 14 comfortable days. 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).