🇺🇸 Chicago vs Ottawa 🇨🇦
Chicago, United States vs Ottawa, Canada — a side-by-side climate comparison to help you pick. Chicago is the warmer of the two — about 2 degrees warmer on average across the year. Chicago is drier, with roughly 13 fewer rainy days a year.
Climate at a glance
| 🇺🇸 Chicago | 🇨🇦 Ottawa | |
|---|---|---|
| Avg annual high | 14°C | 12°C |
| Hottest month | July (26°C) | July (26°C) |
| Coldest month | February (-7°C low) | January (-14°C low) |
| Rainy days / year | 194 | 207 |
| Snow | Rare | Rare |
| Best months to visit | May, June, September | May, June, September |
🇺🇸 Chicago
Best around May, June, September. Hottest in July (26°C), coldest lows in February (-7°C).
🇨🇦 Ottawa
Best around May, June, September. Hottest in July (26°C), coldest lows in January (-14°C).
Frequently asked questions
Is Chicago or Ottawa warmer?
Chicago is warmer overall, averaging about 2 degrees higher across the year.
Which is rainier, Chicago or Ottawa?
Ottawa is rainier — Chicago sees about 13 fewer rainy days per year.
When is the best time to visit Chicago vs Ottawa?
Chicago is best around May, June, September; Ottawa is best around May, June, September.