Fostoria weather by month
What a typical year looks like in Fostoria, Iowa: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Spirit Lake, 20 km from Fostoria; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 29.1 in738 mm
- Snow a year
- 42 in105 cm
- Last spring freeze
- Apr 25
- First fall freeze
- Oct 11
- Heating degree days
- 7,678
- Cooling degree days
- 682
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
Fostoria in January
Highs average 24°−4° and lows 7°−14°, with 0.55 in14 mm of precipitation and 10 in24 cm of snow in a typical January.
- Record high
- 64°18° (2002)
- Record low
- −30°−34° (1894)
- Heating degree days
- 1533
- Cooling degree days
- 0
Fostoria in February
Highs average 28°−2° and lows 11°−12°, with 0.63 in16 mm of precipitation and 8 in21 cm of snow in a typical February.
- Record high
- 70°21° (1896)
- Record low
- −39° (1899)
- Heating degree days
- 1270
- Cooling degree days
- 0
Fostoria in March
Highs average 42°5° and lows 23°−5°, with 1.4 in36 mm of precipitation and 6 in15 cm of snow in a typical March.
- Record high
- 86°30° (2026)
- Record low
- −18°−28° (1897)
- Heating degree days
- 1011
- Cooling degree days
- 0
Fostoria in April
Highs average 56°13° and lows 35°2°, with 3 in76 mm of precipitation and 5 in13 cm of snow in a typical April.
- Record high
- 94°34° (2007)
- Record low
- 5°−15° (2018)
- Heating degree days
- 587
- Cooling degree days
- 2
Fostoria in May
Highs average 68°20° and lows 48°9°, with 4.1 in105 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 100°38° (2018)
- Record low
- 26°−3° (1900)
- Heating degree days
- 253
- Cooling degree days
- 33
Fostoria in June
Highs average 79°26° and lows 59°15°, with 4.8 in121 mm of precipitation in a typical June.
- Record high
- 103°39° (1894)
- Record low
- 33°1° (1901)
- Heating degree days
- 39
- Cooling degree days
- 152
Fostoria 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° (1894)
- Record low
- 40°4° (1895)
- Heating degree days
- 7
- Cooling degree days
- 246
Fostoria in August
Highs average 80°27° and lows 60°16°, with 3.7 in94 mm of precipitation in a typical August.
- Record high
- 104°40° (1894)
- Record low
- 40°4° (1904)
- Heating degree days
- 16
- Cooling degree days
- 176
Fostoria in September
Highs average 73°23° and lows 52°11°, with 3 in77 mm of precipitation in a typical September.
- Record high
- 101°38° (1895)
- Record low
- 21°−6° (1899)
- Heating degree days
- 140
- Cooling degree days
- 67
Fostoria in OctoberThis month
Highs average 59°15° and lows 39°4°, with 2.1 in53 mm of precipitation and 0.4 in1 cm of snow in a typical October.
- Record high
- 95°35° (1897)
- Record low
- 12°−11° (1893)
- Heating degree days
- 508
- Cooling degree days
- 6
Fostoria in November
Highs average 42°6° and lows 25°−4°, with 1.4 in35 mm of precipitation and 4 in11 cm of snow in a typical November.
- Record high
- 78°26° (2006)
- Record low
- −17°−27° (1898)
- Heating degree days
- 942
- Cooling degree days
- 0
Fostoria in December
Highs average 29°−2° and lows 13°−11°, with 0.82 in21 mm of precipitation and 8 in20 cm of snow in a typical December.
- Record high
- 65°18° (1998)
- Record low
- −27°−33° (1901)
- Heating degree days
- 1372
- Cooling degree days
- 0