Weather in Ottawa
Ottawa has a vast range of temperatures between summer and
winter, and is subject to unpredictable weather conditions. Winters
are generally snowy and icy; statistically Ottawa is the second
coldest capital city in the world after Ulaanbaatar in Mongolia.
Temperatures in winter can drop as low as -25°C (-13°F) at night,
but averages are misleading because days can be much warmer. Ice
storms can occur. Summer weather in Ottawa is warm and humid, with
temperatures exceeding 30°C (86°F) fairly often, sometimes as early
as April and as late as October. Summers are usually short, though,
and spring and autumn are unpredictable, with early or late
snowfalls possible or even unseasonal heat waves.