Average annual temperature is 11.0 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: -21.8 °C
Number of sunny days: 221 days
Number of rainy days: 115 days
Number of snow days: 29 days
Look at detailed online map of Ionia (historical)
* Weather data for Ionia (historical) United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 3.4 | 9.0 | 19.6 | 29.2 | 32.1 | 34.7 | 37.2 | 38.4 | 36.7 | 31.7 | 18.7 | 12.0 |
| Average daytime temperature (°C) | -2.9 | 0.6 | 6.8 | 16.6 | 25.8 | 30.0 | 29.6 | 30.3 | 27.4 | 17.0 | 11.3 | 5.4 |
| Average temperature (°C) | -6.0 | -4.7 | 0.0 | 9.9 | 19.0 | 24.2 | 23.8 | 24.5 | 21.5 | 12.1 | 5.6 | 0.9 |
| Average night temperature (°C) | -9.0 | -9.2 | -4.3 | 4.5 | 13.0 | 18.5 | 18.6 | 19.6 | 16.5 | 8.2 | 1.4 | -2.7 |
| Absolute minimum temperature (°C) | -21.2 | -21.8 | -12.8 | -5.2 | 3.5 | 11.3 | 11.0 | 12.8 | 10.5 | -6.3 | -7.0 | -7.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.2 | 6.8 | 7.5 | 9.8 | 11.6 | 13.0 | 11.9 | 11.4 | 10.0 | 7.3 | 6.9 | 5.5 |
| Precipitation (mm) | 69 | 38 | 32 | 38 | 58 | 45 | 80 | 73 | 43 | 131 | 5 | 62 |
| Sunny days | 19 | 19 | 20 | 17 | 17 | 16 | 13 | 20 | 17 | 15 | 24 | 24 |
| Rainy days | 4 | 4 | 3 | 11 | 14 | 14 | 18 | 11 | 13 | 14 | 4 | 5 |
| Snow days | 8 | 5 | 8 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 |
The best time to visit Ionia (historical) during the most sunny months:
Months with the longest average daylight duration in Ionia (historical):
The largest precipitation sum in Ionia (historical) is at