Houlton weather in May: Houlton, Maine: normal highs, lows, rain and records for May
Houlton in May has a normal high of 64°F and a normal low of 39°F, a daily mean of 51°F, rising from 58°F on the 1st to 68°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 3.46 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 4°C, 88 mm of precipitation in May.
- NOAA stationHoulton International Airport
- Station IDUSW00014609
- Location46.12°N 67.79°W
- Elevation476 ft (145 m)
- Population (town)6,005
- Census place4,958
- Jan 23° 3°
- Feb 26° 3°
- Mar 36° 15°
- Apr 49° 28°
- May 64° 39°
- Jun 73° 48°
- Jul 78° 54°
- Aug 77° 52°
- Sep 68° 44°
- Oct 55° 34°
- Nov 41° 25°
- Dec 30° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Houlton in May?
The normal high is 64°F and the normal low 39°F, for a daily mean of 51.2°F. May is 12.6°F warmer than April and 9.0°F cooler than June. May is the 5th warmest month of the year in Houlton and the 6th wettest. Across the month the normal high rises 10°F, from 58°F on May 1 to 68°F on May 31. From one year to the next May's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 49°F and 54°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 34°F | 41% | 27% |
| May 8 | 61°F | 37°F | 42% | 27% |
| May 15 | 64°F | 39°F | 43% | 27% |
| May 22 | 66°F | 41°F | 43% | 27% |
| May 31 | 68°F | 43°F | 43% | 26% |
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 | 58°F | 34°F | 41% | 27% | 14 h 20 min |
| May 2 | 58°F | 35°F | 42% | 27% | 14 h 20 min |
| May 3 | 59°F | 35°F | 42% | 27% | 14 h 20 min |
| May 4 | 59°F | 35°F | 42% | 27% | 14 h 30 min |
| May 5 | 60°F | 36°F | 42% | 27% | 14 h 30 min |
| May 6 | 60°F | 36°F | 42% | 27% | 14 h 30 min |
| May 7 | 60°F | 36°F | 42% | 27% | 14 h 30 min |
| May 8 | 61°F | 37°F | 42% | 27% | 14 h 40 min |
| May 9 | 61°F | 37°F | 42% | 27% | 14 h 40 min |
| May 10 | 62°F | 37°F | 42% | 27% | 14 h 40 min |
| May 11 | 62°F | 38°F | 42% | 27% | 14 h 50 min |
| May 12 | 63°F | 38°F | 42% | 27% | 14 h 50 min |
| May 13 | 63°F | 38°F | 42% | 27% | 14 h 50 min |
| May 14 | 63°F | 38°F | 43% | 27% | 14 h 50 min |
| May 15 | 64°F | 39°F | 43% | 27% | 15 h |
| May 16 | 64°F | 39°F | 43% | 27% | 15 h |
| May 17 | 64°F | 39°F | 43% | 27% | 15 h |
| May 18 | 65°F | 40°F | 43% | 27% | 15 h |
| May 19 | 65°F | 40°F | 43% | 27% | 15 h |
| May 20 | 65°F | 40°F | 43% | 27% | 15 h 10 min |
| May 21 | 66°F | 40°F | 43% | 27% | 15 h 10 min |
| May 22 | 66°F | 41°F | 43% | 27% | 15 h 10 min |
| May 23 | 66°F | 41°F | 43% | 27% | 15 h 10 min |
| May 24 | 67°F | 41°F | 43% | 27% | 15 h 20 min |
| May 25 | 67°F | 42°F | 43% | 26% | 15 h 20 min |
| May 26 | 67°F | 42°F | 43% | 26% | 15 h 20 min |
| May 27 | 67°F | 42°F | 43% | 26% | 15 h 20 min |
| May 28 | 68°F | 42°F | 43% | 26% | 15 h 20 min |
| May 29 | 68°F | 43°F | 43% | 26% | 15 h 20 min |
| May 30 | 68°F | 43°F | 43% | 26% | 15 h 30 min |
| May 31 | 68°F | 43°F | 43% | 26% | 15 h 30 min |
- Normal high
- 64°FMay average
- Normal low
- 39°FMay average
- Precipitation
- 3.46 inmonth total
- Days with precipitation
- 130.01 inch or more
- Nights at 32°F or colder
- 8
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 9
- Days at 80°F or more
- 2
- Sunshine
- 65%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014609; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Houlton in May?
On a given May day the chance of 0.01 inch or more is 42% on average, highest around May 31 (43%). In all, 3.46 in falls on 13 days of a normal May.
In a normal May in Houlton, 8 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014609.
How humid and windy is Houlton in May?
At 3 p.m. the normal temperature is 65°F with 51% relative humidity and a dew point of 46°F; at 6 a.m. it is 51°F with 82% humidity. The wind averages 7.0 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 51°F | 45°F | 82% | 5.7 mph | – |
| 9 a.m. | 58°F | 46°F | 64% | 8.4 mph | – |
| noon | 63°F | 46°F | 53% | 9.7 mph | – |
| 3 p.m. | 65°F | 46°F | 51% | 9.8 mph | – |
| 6 p.m. | 62°F | 46°F | 57% | 7.5 mph | – |
| 9 p.m. | 54°F | 47°F | 77% | 5.3 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014609. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Houlton?
The warmest May temperature on this station's record (since 1948) is 96°F, on May 29, 1978; the coldest is 18°F, on May 2, 1972. The wettest May brought 7.11 in (1961); the snowiest, 8.8 inches (1967).
The May mean against the 1991-2020 normal of 51.2°F: 2021 50.8°F (−0.4), 2022 53.9°F (+2.7), 2023 51.0°F (−0.2), 2024 55.3°F (+4.1), 2025 52.1°F (+0.9), 2026 50.1°F (−1.1). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 50.8°F | −0.4°F | 3.79 in |
| 2022 | 53.9°F | +2.7°F | 2.06 in |
| 2023 | 51.0°F | −0.2°F | 2.94 in |
| 2024 | 55.3°F | +4.1°F | 2.18 in |
| 2025 | 52.1°F | +0.9°F | 4.38 in |
| 2026 | 50.1°F | −1.1°F | 4.06 in |
Source: records: ACIS, station USW00014609; recent months: ACIS, station USW00014609. Records and recent months use complete months only.
How does May in Houlton 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; Houlton's is 64°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.