Ionia weather by month
What a typical year looks like in Ionia, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. No nearby active station has official 1991–2020 normals, so these are forecast.blue’s own averages computed from daily observations at Ionia 3 W, 4 km from Ionia, over its available record (2021–2026) — not an NCEI normal; records cover 2021–2026.
The year at a glance
- Precipitation a year
- 34.4 in874 mm
- Snow a year
- Rare
- Last spring freeze
- May 10
- First fall freeze
- Oct 23
- Heating degree days
- —
- Cooling degree days
- —
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −3°−19° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Ionia in January
Highs average 29°−2° and lows 16°−9°, with 2 in51 mm of precipitation in a typical January.
- Record high
- 58°14° (2026)
- Record low
- −21°−29° (2026)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in February
Highs average 36°2° and lows 18°−8°, with 2 in51 mm of precipitation in a typical February.
- Record high
- 74°23° (2024)
- Record low
- −7°−22° (2025)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in March
Highs average 47°8° and lows 26°−3°, with 3.7 in94 mm of precipitation in a typical March.
- Record high
- 77°25° (2025)
- Record low
- 9°−13° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in April
Highs average 59°15° and lows 35°2°, with 4.6 in117 mm of precipitation in a typical April.
- Record high
- 85°29° (2023)
- Record low
- 19°−7° (2026)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in May
Highs average 70°21° and lows 44°7°, with 2.8 in71 mm of precipitation in a typical May.
- Record high
- 89°32° (2023)
- Record low
- 28°−2° (2026)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in June
Highs average 80°27° and lows 54°12°, with 3.1 in79 mm of precipitation in a typical June.
- Record high
- 94°34° (2022)
- Record low
- 34°1° (2025)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in July
Highs average 83°28° and lows 59°15°, with 3.3 in84 mm of precipitation in a typical July.
- Record high
- 98°37° (2026)
- Record low
- 44°7° (2024)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in August
Highs average 80°27° and lows 57°14°, with 3.9 in99 mm of precipitation in a typical August.
- Record high
- 91°33° (2024)
- Record low
- 42°6° (2025)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in September
Highs average 75°24° and lows 52°11°, with 2.1 in53 mm of precipitation in a typical September.
- Record high
- 92°33° (2026)
- Record low
- 35°2° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in OctoberThis month
Highs average 64°18° and lows 41°5°, with 2.9 in74 mm of precipitation in a typical October.
- Record high
- 87°31° (2025)
- Record low
- 27°−3° (2024)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in November
Highs average 49°9° and lows 31°−1°, with 2.1 in53 mm of precipitation in a typical November.
- Record high
- 76°24° (2022)
- Record low
- 10°−12° (2022)
- Heating degree days
- —
- Cooling degree days
- —
Ionia in December
Highs average 36°2° and lows 24°−5°, with 1.9 in48 mm of precipitation in a typical December.
- Record high
- 56°13° (2023)
- Record low
- 0°−18° (2025)
- Heating degree days
- —
- Cooling degree days
- —
Ionia 2ssw station, 1896–2013: records and averages
This station is no longer reporting, but its 1896–2013 record is the longest and most local history available. These are its own averages over its own period of record — not NCEI normals, and not the same station as the computed averages above.
January
Average high 30°−1°, low 15°−10°, 1.9 in48 mm precipitation.
Record high 65°18° (1950); record low −25°−32° (1963).
February
Average high 33°0°, low 15°−10°, 1.5 in38 mm precipitation.
Record high 69°21° (1999); record low −25°−32° (1899).
March
Average high 44°6°, low 24°−4°, 2.2 in56 mm precipitation.
Record high 86°30° (2012); record low −15°−26° (1943).
April
Average high 58°15°, low 35°2°, 3.1 in79 mm precipitation.
Record high 88°31° (1899); record low 6°−14° (1982).
May
Average high 70°21°, low 45°7°, 3.4 in86 mm precipitation.
Record high 95°35° (1977); record low 19°−7° (1989).
June
Average high 79°26°, low 55°13°, 3.3 in84 mm precipitation.
Record high 102°39° (1953); record low 29°−2° (1897).
July
Average high 84°29°, low 59°15°, 2.9 in74 mm precipitation.
Record high 103°39° (1988); record low 37°3° (1945).
August
Average high 81°27°, low 57°14°, 3.4 in86 mm precipitation.
Record high 103°39° (1947); record low 36°2° (1982).
September
Average high 74°23°, low 49°10°, 3.1 in79 mm precipitation.
Record high 98°37° (1897); record low 25°−4° (1897).
October
Average high 62°17°, low 39°4°, 2.6 in66 mm precipitation.
Record high 89°32° (1897); record low 16°−9° (1960).
November
Average high 47°8°, low 30°−1°, 2.5 in64 mm precipitation.
Record high 79°26° (1950); record low −7°−22° (1958).
December
Average high 34°1°, low 20°−6°, 2.1 in53 mm precipitation.
Record high 68°20° (2001); record low −14°−26° (1896).