Farnhamville weather by month
What a typical year looks like in Farnhamville, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Rockwell City, 23 km from Farnhamville; records cover 1894–2026.
The year at a glance
- Precipitation a year
- 33.8 in857 mm
- Snow a year
- 32 in82 cm
- Last spring freeze
- Apr 27
- First fall freeze
- Oct 9
- Heating degree days
- 7,188
- Cooling degree days
- 732
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −12°−24° (heating, 99%) and 93°34° (cooling, 1%).
Month by month
Farnhamville in January
Highs average 27°−3° and lows 8°−13°, with 0.76 in19 mm of precipitation and 7 in19 cm of snow in a typical January.
- Record high
- 70°21° (2002)
- Record low
- −35°−37° (1912)
- Heating degree days
- 1474
- Cooling degree days
- 0
Farnhamville in February
Highs average 31°0° and lows 12°−11°, with 0.99 in25 mm of precipitation and 8 in19 cm of snow in a typical February.
- Record high
- 70°21° (2017)
- Record low
- −33°−36° (2021)
- Heating degree days
- 1208
- Cooling degree days
- 0
Farnhamville in March
Highs average 45°7° and lows 24°−4°, with 2 in51 mm of precipitation and 5 in12 cm of snow in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −22°−30° (1962)
- Heating degree days
- 938
- Cooling degree days
- 0
Farnhamville in April
Highs average 59°15° and lows 36°2°, with 3.8 in96 mm of precipitation and 1.9 in4.8 cm of snow in a typical April.
- Record high
- 97°36° (1980)
- Record low
- 4°−16° (1936)
- Heating degree days
- 532
- Cooling degree days
- 4
Farnhamville in May
Highs average 70°21° and lows 49°9°, with 5 in128 mm of precipitation in a typical May.
- Record high
- 106°41° (1934)
- Record low
- 17°−8° (1907)
- Heating degree days
- 218
- Cooling degree days
- 43
Farnhamville in June
Highs average 80°26° and lows 60°15°, with 5 in128 mm of precipitation in a typical June.
- Record high
- 105°41° (1933)
- Record low
- 34°1° (1945)
- Heating degree days
- 30
- Cooling degree days
- 166
Farnhamville in July
Highs average 83°28° and lows 63°17°, with 3.5 in90 mm of precipitation in a typical July.
- Record high
- 109°43° (1936)
- Record low
- 42°6° (1897)
- Heating degree days
- 6
- Cooling degree days
- 250
Farnhamville in August
Highs average 81°27° and lows 61°16°, with 4.5 in115 mm of precipitation in a typical August.
- Record high
- 110°43° (1936)
- Record low
- 36°2° (1915)
- Heating degree days
- 15
- Cooling degree days
- 188
Farnhamville in September
Highs average 75°24° and lows 51°11°, with 3 in75 mm of precipitation in a typical September.
- Record high
- 102°39° (1939)
- Record low
- 20°−7° (1899)
- Heating degree days
- 131
- Cooling degree days
- 73
Farnhamville in OctoberThis month
Highs average 62°17° and lows 38°4°, with 2.4 in60 mm of precipitation and 0.6 in1.5 cm of snow in a typical October.
- Record high
- 94°34° (1963)
- Record low
- −3°−19° (1925)
- Heating degree days
- 464
- Cooling degree days
- 8
Farnhamville in November
Highs average 46°8° and lows 25°−4°, with 1.5 in38 mm of precipitation and 2.4 in6.1 cm of snow in a typical November.
- Record high
- 80°27° (1999)
- Record low
- −16°−27° (1897)
- Heating degree days
- 882
- Cooling degree days
- 0
Farnhamville in December
Highs average 32°0° and lows 15°−10°, with 1.3 in34 mm of precipitation and 7 in19 cm of snow in a typical December.
- Record high
- 70°21° (2021)
- Record low
- −32°−36° (1917)
- Heating degree days
- 1290
- Cooling degree days
- 0