Pleasant Plain weather by month
What a typical year looks like in Pleasant Plain, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Washington, 20 km from Pleasant Plain; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 37.9 in964 mm
- Snow a year
- 25 in64 cm
- Last spring freeze
- Apr 19
- First fall freeze
- Oct 12
- Heating degree days
- 6,535
- Cooling degree days
- 867
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −8°−22° (heating, 99%) and 95°35° (cooling, 1%).
Month by month
Pleasant Plain in January
Highs average 30°−1° and lows 12°−11°, with 1.3 in32 mm of precipitation and 8 in19 cm of snow in a typical January.
- Record high
- 70°21° (1989)
- Record low
- −32°−36° (2009)
- Heating degree days
- 1368
- Cooling degree days
- 0
Pleasant Plain in February
Highs average 35°2° and lows 15°−9°, with 1.6 in40 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 80°27° (2024)
- Record low
- −29°−34° (1905)
- Heating degree days
- 1116
- Cooling degree days
- 0
Pleasant Plain in March
Highs average 48°9° and lows 27°−3°, with 2.3 in59 mm of precipitation and 2.3 in5.8 cm of snow in a typical March.
- Record high
- 89°32° (1986)
- Record low
- −16°−27° (1962)
- Heating degree days
- 856
- Cooling degree days
- 1
Pleasant Plain in April
Highs average 62°17° and lows 38°3°, with 3.7 in93 mm of precipitation and 0.8 in2 cm of snow in a typical April.
- Record high
- 94°34° (1930)
- Record low
- 7°−14° (1899)
- Heating degree days
- 464
- Cooling degree days
- 6
Pleasant Plain in May
Highs average 72°22° and lows 50°10°, with 5.1 in130 mm of precipitation in a typical May.
- Record high
- 103°39° (1934)
- Record low
- 23°−5° (2005)
- Heating degree days
- 182
- Cooling degree days
- 57
Pleasant Plain in June
Highs average 81°27° and lows 60°15°, with 5.2 in131 mm of precipitation in a typical June.
- Record high
- 107°42° (1936)
- Record low
- 35°2° (1903)
- Heating degree days
- 22
- Cooling degree days
- 190
Pleasant Plain in July
Highs average 85°29° and lows 63°17°, with 4.1 in105 mm of precipitation in a typical July.
- Record high
- 113°45° (1936)
- Record low
- 45°7° (1947)
- Heating degree days
- 3
- Cooling degree days
- 284
Pleasant Plain in August
Highs average 83°29° and lows 61°16°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 109°43° (1930)
- Record low
- 39°4° (1915)
- Heating degree days
- 10
- Cooling degree days
- 226
Pleasant Plain in September
Highs average 77°25° and lows 51°11°, with 3.6 in91 mm of precipitation in a typical September.
- Record high
- 102°39° (1933)
- Record low
- 23°−5° (1942)
- Heating degree days
- 110
- Cooling degree days
- 90
Pleasant Plain in OctoberThis month
Highs average 64°18° and lows 40°4°, with 3 in77 mm of precipitation and 0.4 in1 cm of snow in a typical October.
- Record high
- 96°36° (1938)
- Record low
- 6°−14° (1925)
- Heating degree days
- 414
- Cooling degree days
- 13
Pleasant Plain in November
Highs average 49°9° and lows 28°−2°, with 2.2 in57 mm of precipitation and 1.4 in3.6 cm of snow in a typical November.
- Record high
- 82°28° (2016)
- Record low
- −7°−22° (1898)
- Heating degree days
- 804
- Cooling degree days
- 0
Pleasant Plain in December
Highs average 36°2° and lows 18°−8°, with 1.7 in43 mm of precipitation and 5 in12 cm of snow in a typical December.
- Record high
- 74°23° (2021)
- Record low
- −25°−32° (1924)
- Heating degree days
- 1186
- Cooling degree days
- 0