Yukon weather can be quite variable. One day an Arctic air mass can dominate, and the next day a warm front can move in from the Pacific. Sometimes visitors get to experience all four seasons in one day! The climate is generally very dry, with little precipitation, but is considerably wetter in the southeast. Precipitation is much greater in the mountains, and the snowpack continues to melt well into the summer, resulting in high water in July or August. No matter when you visit, it's important to be prepared for sudden changes in weather and temperature, especially if you are doing outdoor activities.
Spring is April and May. This transition season rolls together the last of the skiing, the arrival of migrating swans and early wildflowers. Pack long-sleeved shirts, pants, a windbreaker or shell jacket, sweaters, a warm hat and gloves, plus walking shoes and waterproof boots
Summer is June to August. The temperature can be plus 30 Celsius with the sun blazing around the clock in the far north, where the sun barely sets. People are full of energy. Life flourishes under hours of intense sunlight as the land hosts millions of migratory birds and explodes in wildflower blooms. On summer solstice, June 21, the sun doesn't set at the Arctic Circle—the further north one travels, the higher the sun and the longer the season of the midnight sun. Pack shorts and T-shirts, but come prepared with plenty of layering options. On an outdoor excursion, always bring along pants and long sleeves. A hat and gloves can come in handy, and a windbreaker is useful at higher elevations. Brimmed hats, sunglasses and sunscreen protect against the intense summer sun. Good walking shoes are a must. If you're going into the backcountry, consider packing a bug jacket.
Fall is September and October. The mountain slopes are vibrant with colour. Temperatures are dropping, especially at night. Bring plenty of light, long-sleeve shirts, sweaters and windbreakers for jaunts around town or in the wilds. Pack a warm hat and gloves, walking shoes, plus waterproof boots.
Winter is November to March. Yukon winters are cold and snowy, with temperatures dropping as low as minus 30 Celsius, with little to no sun at all. This is the perfect time to visit if you are hoping to witness the dancing lights of the Aurora Borealis. A good parka and insulated winter boots are a must. Pack lots of warm clothes and long underwear. Bring wind or snow pants if you have them. Warm hat, gloves or mittens, plus a scarf or neck warmer are essential.