Bangor weather in May: Bangor, Maine: normal highs, lows, rain and records for May
Bangor in May has a normal high of 66°F and a normal low of 43°F, a daily mean of 55°F, rising from 61°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 12 days in a normal May, 3.34 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 6°C, 85 mm of precipitation in May.
- NOAA stationBangor International Airport
- Station IDUSW00014606
- Location44.80°N 68.82°W
- Elevation148 ft (45 m)
- Population32,446
- Jan 28° 9°
- Feb 31° 11°
- Mar 40° 21°
- Apr 53° 32°
- May 66° 43°
- Jun 75° 53°
- Jul 80° 59°
- Aug 79° 57°
- Sep 71° 49°
- Oct 58° 38°
- Nov 46° 29°
- Dec 35° 17°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bangor in May?
The normal high is 66°F and the normal low 43°F, for a daily mean of 54.5°F. May is 11.7°F warmer than April and 9.1°F cooler than June. May is the 5th warmest month of the year in Bangor and the 7th wettest. Across the month the normal high rises 9°F, from 61°F on May 1 to 70°F on May 31. From one year to the next May's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Mays in three average between 52°F and 57°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 61°F | 38°F | 39% | 25% |
| May 8 | 63°F | 41°F | 39% | 26% |
| May 15 | 66°F | 43°F | 40% | 26% |
| May 22 | 68°F | 45°F | 40% | 25% |
| May 31 | 70°F | 48°F | 40% | 24% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 61°F | 38°F | 39% | 25% | 14 h 10 min |
| May 2 | 61°F | 39°F | 39% | 25% | 14 h 10 min |
| May 3 | 61°F | 39°F | 39% | 25% | 14 h 20 min |
| May 4 | 62°F | 39°F | 39% | 25% | 14 h 20 min |
| May 5 | 62°F | 40°F | 39% | 25% | 14 h 20 min |
| May 6 | 63°F | 40°F | 39% | 25% | 14 h 30 min |
| May 7 | 63°F | 40°F | 39% | 25% | 14 h 30 min |
| May 8 | 63°F | 41°F | 39% | 26% | 14 h 30 min |
| May 9 | 64°F | 41°F | 39% | 26% | 14 h 30 min |
| May 10 | 64°F | 41°F | 40% | 26% | 14 h 40 min |
| May 11 | 64°F | 42°F | 40% | 26% | 14 h 40 min |
| May 12 | 65°F | 42°F | 40% | 26% | 14 h 40 min |
| May 13 | 65°F | 42°F | 40% | 26% | 14 h 40 min |
| May 14 | 65°F | 43°F | 40% | 26% | 14 h 50 min |
| May 15 | 66°F | 43°F | 40% | 26% | 14 h 50 min |
| May 16 | 66°F | 43°F | 40% | 26% | 14 h 50 min |
| May 17 | 66°F | 44°F | 40% | 26% | 14 h 50 min |
| May 18 | 67°F | 44°F | 40% | 25% | 14 h 50 min |
| May 19 | 67°F | 44°F | 40% | 25% | 15 h |
| May 20 | 67°F | 45°F | 40% | 25% | 15 h |
| May 21 | 67°F | 45°F | 40% | 25% | 15 h |
| May 22 | 68°F | 45°F | 40% | 25% | 15 h |
| May 23 | 68°F | 46°F | 40% | 25% | 15 h |
| May 24 | 68°F | 46°F | 40% | 25% | 15 h 10 min |
| May 25 | 69°F | 46°F | 40% | 25% | 15 h 10 min |
| May 26 | 69°F | 47°F | 40% | 25% | 15 h 10 min |
| May 27 | 69°F | 47°F | 40% | 25% | 15 h 10 min |
| May 28 | 69°F | 47°F | 40% | 25% | 15 h 10 min |
| May 29 | 70°F | 47°F | 40% | 25% | 15 h 20 min |
| May 30 | 70°F | 48°F | 40% | 25% | 15 h 20 min |
| May 31 | 70°F | 48°F | 40% | 24% | 15 h 20 min |
- Normal high
- 66°FMay average
- Normal low
- 43°FMay average
- Precipitation
- 3.34 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 2
- Daylight
- 14 h 10 min to 15 h 20 minMay 1 to May 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 3
- Sunshine
- 67%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014606; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bangor in May?
On a given May day the chance of 0.01 inch or more is 40% on average, highest around May 17 (40%). In all, 3.34 in falls on 12 days of a normal May, 1 of them with an inch or more.
In a normal May in Bangor, 2 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014606.
What are the records for May in Bangor?
The warmest May temperature on Bangor's official record (since 1925) is 96°F, on May 22, 1992; the coldest is 23°F, on May 2, 1943. The wettest May brought 7.65 in (1989); the snowiest, 5.2 inches (1963).
The May mean against the 1991-2020 normal of 54.5°F: 2021 55.0°F (+0.5), 2022 56.7°F (+2.2), 2023 54.6°F (+0.1), 2024 57.4°F (+2.9), 2025 54.9°F (+0.4), 2026 53.7°F (−0.8). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 55.0°F | +0.5°F | 1.82 in |
| 2022 | 56.7°F | +2.2°F | 2.11 in |
| 2023 | 54.6°F | +0.1°F | 2.95 in |
| 2024 | 57.4°F | +2.9°F | 3.61 in |
| 2025 | 54.9°F | +0.4°F | 5.44 in |
| 2026 | 53.7°F | −0.8°F | 2.71 in |
Source: records: ACIS, NWS threaded record BGRthr; recent months: ACIS, station USW00014606. Records and recent months use complete months only.
How does May in Bangor compare across Maine?
Across the 42 places PlainClimate covers in Maine, May normal highs run from 60°F in Eastport to 68°F in Fryeburg; Bangor's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.