Houlton weather by month
What a typical year looks like in Houlton, Maine: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Houlton Airport, 3 km from Houlton; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 39.3 in998 mm
- Snow a year
- Rare
- Last spring freeze
- May 28
- First fall freeze
- Sep 14
- Heating degree days
- 9,035
- Cooling degree days
- 206
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −20°−29° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Houlton in January
Highs average 23°−5° and lows 3°−16°, with 2.7 in67 mm of precipitation in a typical January.
- Record high
- 58°14° (2005)
- Record low
- −41° (1981)
- Heating degree days
- 1615
- Cooling degree days
- 0
Houlton in February
Highs average 26°−3° and lows 3°−16°, with 2 in50 mm of precipitation in a typical February.
- Record high
- 62°17° (1994)
- Record low
- −36°−38° (1967)
- Heating degree days
- 1407
- Cooling degree days
- 0
Houlton in March
Highs average 36°2° and lows 15°−9°, with 2.7 in68 mm of precipitation in a typical March.
- Record high
- 79°26° (2012)
- Record low
- −31°−35° (2001)
- Heating degree days
- 1224
- Cooling degree days
- 0
Houlton in April
Highs average 49°10° and lows 28°−2°, with 2.9 in75 mm of precipitation in a typical April.
- Record high
- 86°30° (1990)
- Record low
- −13°−25° (2015)
- Heating degree days
- 792
- Cooling degree days
- 0
Houlton in May
Highs average 64°18° and lows 39°4°, with 3.5 in88 mm of precipitation in a typical May.
- Record high
- 96°36° (1978)
- Record low
- 18°−8° (1972)
- Heating degree days
- 432
- Cooling degree days
- 5
Houlton in June
Highs average 73°23° and lows 48°9°, with 4 in103 mm of precipitation in a typical June.
- Record high
- 97°36° (1969)
- Record low
- 26°−3° (2020)
- Heating degree days
- 177
- Cooling degree days
- 34
Houlton in July
Highs average 78°26° and lows 54°12°, with 3.6 in92 mm of precipitation in a typical July.
- Record high
- 97°36° (1952)
- Record low
- 32°0° (1969)
- Heating degree days
- 54
- Cooling degree days
- 88
Houlton in August
Highs average 77°25° and lows 52°11°, with 3.5 in89 mm of precipitation in a typical August.
- Record high
- 99°37° (1975)
- Record low
- 30°−1° (1978)
- Heating degree days
- 81
- Cooling degree days
- 62
Houlton in September
Highs average 68°20° and lows 44°7°, with 3.4 in86 mm of precipitation in a typical September.
- Record high
- 93°34° (2010)
- Record low
- 20°−7° (1980)
- Heating degree days
- 283
- Cooling degree days
- 17
Houlton in OctoberThis month
Highs average 55°13° and lows 34°1°, with 4 in103 mm of precipitation in a typical October.
- Record high
- 84°29° (2025)
- Record low
- 10°−12° (1972)
- Heating degree days
- 644
- Cooling degree days
- 0
Houlton in November
Highs average 41°5° and lows 25°−4°, with 3.6 in92 mm of precipitation in a typical November.
- Record high
- 73°23° (2020)
- Record low
- −14°−26° (1989)
- Heating degree days
- 959
- Cooling degree days
- 0
Houlton in December
Highs average 30°−1° and lows 12°−11°, with 3.4 in86 mm of precipitation in a typical December.
- Record high
- 60°16° (2020)
- Record low
- −34°−37° (1989)
- Heating degree days
- 1367
- Cooling degree days
- 0