Portland weather by month
What a typical year looks like in Portland, Arkansas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Portland, 2 km from Portland; records cover 1909–2026.
The year at a glance
- Precipitation a year
- 56.4 in1433 mm
- Snow a year
- 1 in2.5 cm
- Last spring freeze
- Mar 10
- First fall freeze
- Nov 10
- Heating degree days
- 2,818
- Cooling degree days
- 2,156
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 20°−7° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Portland in January
Highs average 53°12° and lows 33°0°, with 5.7 in144 mm of precipitation and 0.6 in1.5 cm of snow in a typical January.
- Record high
- 86°30° (1950)
- Record low
- −4°−20° (1930)
- Heating degree days
- 692
- Cooling degree days
- 0
Portland in February
Highs average 57°14° and lows 36°2°, with 6 in153 mm of precipitation and 0.2 in0.5 cm of snow in a typical February.
- Record high
- 89°32° (1918)
- Record low
- 2°−17° (1951)
- Heating degree days
- 525
- Cooling degree days
- 2
Portland in March
Highs average 65°18° and lows 44°7°, with 5.1 in130 mm of precipitation and 0.1 in0.3 cm of snow in a typical March.
- Record high
- 94°34° (1929)
- Record low
- 13°−11° (1943)
- Heating degree days
- 344
- Cooling degree days
- 15
Portland in April
Highs average 74°23° and lows 52°11°, with 5.7 in145 mm of precipitation in a typical April.
- Record high
- 96°36° (2000)
- Record low
- 28°−2° (1987)
- Heating degree days
- 123
- Cooling degree days
- 66
Portland in May
Highs average 82°28° and lows 62°16°, with 4.9 in125 mm of precipitation in a typical May.
- Record high
- 102°39° (1926)
- Record low
- 38°3° (1925)
- Heating degree days
- 18
- Cooling degree days
- 226
Portland in June
Highs average 88°31° and lows 69°21°, with 3.4 in87 mm of precipitation in a typical June.
- Record high
- 106°41° (1915)
- Record low
- 48°9° (1917)
- Heating degree days
- 0
- Cooling degree days
- 416
Portland in July
Highs average 91°33° and lows 72°22°, with 4.3 in109 mm of precipitation in a typical July.
- Record high
- 109°43° (1954)
- Record low
- 54°12° (1947)
- Heating degree days
- 0
- Cooling degree days
- 507
Portland in August
Highs average 91°33° and lows 71°22°, with 3.6 in92 mm of precipitation in a typical August.
- Record high
- 110°43° (1909)
- Record low
- 52°11° (1986)
- Heating degree days
- 0
- Cooling degree days
- 496
Portland in September
Highs average 87°30° and lows 64°18°, with 3.4 in87 mm of precipitation in a typical September.
- Record high
- 106°41° (1925)
- Record low
- 38°3° (1967)
- Heating degree days
- 6
- Cooling degree days
- 321
Portland in OctoberThis month
Highs average 77°25° and lows 52°11°, with 4.3 in108 mm of precipitation in a typical October.
- Record high
- 99°37° (1926)
- Record low
- 23°−5° (1910)
- Heating degree days
- 111
- Cooling degree days
- 94
Portland in November
Highs average 65°18° and lows 41°5°, with 4.4 in111 mm of precipitation in a typical November.
- Record high
- 89°32° (1927)
- Record low
- 16°−9° (1938)
- Heating degree days
- 371
- Cooling degree days
- 11
Portland in December
Highs average 55°13° and lows 35°2°, with 5.6 in141 mm of precipitation and 0.1 in0.3 cm of snow in a typical December.
- Record high
- 85°29° (1922)
- Record low
- 0°−18° (1989)
- Heating degree days
- 628
- Cooling degree days
- 2