Best Time to Visit Onalaska: Month-by-Month Guide
Best months for Onalaska: September, August, July, June.
- Best months for Onalaska: September, August, July, June.
- Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: May, September. Good weather without the busiest period.
- Wettest months: May, June, April.
- The least pleasant month is December (score 4.1).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -3°C | -12°C | 32 mm | 7 | – | – | 4.2 |
| February | 0°C | -9°C | 31 mm | 6 | – | – | 4.3 |
| March | 7°C | -3°C | 58 mm | 9 | – | – | 5.1 |
| April | 14°C | 3°C | 92 mm | 12 | – | – | 6.2 |
| May | 21°C | 10°C | 106 mm | 13 | – | – | 7.1 |
| June | 26°C | 16°C | 121 mm | 12 | – | – | 7.2 |
| July | 28°C | 18°C | 98 mm | 11 | – | – | 7.6 |
| August | 26°C | 16°C | 92 mm | 10 | – | – | 7.7 |
| September | 23°C | 12°C | 81 mm | 10 | – | – | 7.8 |
| October | 15°C | 5°C | 72 mm | 9 | – | – | 6.7 |
| November | 6°C | -1°C | 51 mm | 7 | – | – | 5.4 |
| December | -1°C | -8°C | 39 mm | 7 | – | – | 4.1 |
Frequently asked questions
When is the best time to visit Onalaska?
The best months are September, August, July, June.
When is the rainy season in Onalaska?
The wettest months are May, June, April.