Saskatoon is located far inland and can experience extreme variations in temperature and precipitation.  The weather can be unpredictable at any time of the year, and it's a good idea to check weather reports often to get the latest information.

Winter generally lasts from early November to mid-March.  Temperatures remain below freezing at all times, even during the daytime.  January and February are the coldest months, with low temperatures often dropping below -30°C (-22°F) and high temperatures not rising above -10°C (14°F).  When the wind speed increases, it can produce dangerous wind chills.  Snowfall is light compared to other parts of Canada, but blizzards — severe winter storms with heavy snowfall, strong winds and reduced visibility — can occur.  Daylight hours are reduced to as little as 8 hours per day by late December.  Fortunately, skies often remain clear and Saskatoon enjoys many sunny days during the winter months, though the sun remains low in the sky.  Sometimes a few days of above freezing temperatures can occur, called "January thaw"; chinook winds from Alberta can also cause a temporary warming trend.  Warm winter clothing is a must; dressing in layers is a good way to keep warm.  Sweaters, winter jackets, gloves or mittens, scarves, hats and winter boots should be part of your wardrobe.

Spring usually lasts from mid-March to late May.   As temperatures rise above freezing during the day, snow begins to melt and flowering plants emerge from hibernation.  Below freezing nighttime temperatures persist until mid-May.  The weather can be cool, cloudy and damp; rainfall is common.  Windproof and waterproof jackets, gloves, long sleeved shirts and long pants are the norm for spring clothing.

Summer spans the period from early June to mid-September.  This is considered the most pleasant weather during the year.  Daytime temperatures normally reach the mid 20°C (mid 70's F) range, and often push above 30°C (85°F) during heat waves.  Skies are usually sunny, but afternoon and evening thunderstorms can occur in humid weather.  Tornados are an uncommon occurence but can happen during stormy conditions.  Shorts, t-shirts and other light, breathable garments are the norm for summer clothing.  Hats can ward off heatstroke, and sunscreen is recommended to prevent sunburn.  At the summer solstice in late June, daylight can last for up to 16 hours, starting in the early morning (sunrise at 4:30 AM) and persisting until late in the evening (sunset at 9:30 PM). Note that Saskatchewan does not adopt daylight savings time.

Autumn occurs from mid-September to late October.  The leaves on trees change colour and fall in response to the reduced daylight hours and colder temperatures.  By early October, temperatures overnight fall below freezing. While usually dry, the autumn can bring rainfall, sometimes mixed with snow flurries by mid-October.  Clothing choices are the same as those from spring.

 For the current weather and forecast, and up-to-the-minute weather warnings, see Environment Canada's Saskatoon weather page. This page is also available in Imperial units (Fahrenheit degrees).

For very detailed climate information, see Environment Canada's Saskatoon climate page.