The climate of Saskatoon is continental, with very cold winters and quite warm summers.
The city is located in central-western Canada, in the province of Saskatchewan, at an altitude of 500 meters (1,600 feet), and at the 52nd parallel.
We are in the Canadian prairies, characterized by low precipitation (especially in winter) and strong variations in temperature. On the coldest days of the year, the temperature can drop to -35 °C (-31 °F) or even below. In February 1994 and February 2019, it dropped to -43 °C (-45 °F).
On the hottest days of the year, temperatures can reach 35 °C (95 °F), or even higher. In August 2018, it reached 38 °C (100.5 °F), and in June 1988, 40.6 °C (105 °F). However, in summer the temperature range is high, and at night it gets cool, actually, even in the height of summer, it can sometimes get cold.
The average temperature of the coldest month (January) is of -13.9 °C (7 °F), that of the warmest month (July) is of 19 °C (66 °F). Here are the average temperatures.

Precipitation amounts to 390 millimeters (15.4 inches) per year: it is therefore quite scarce. It ranges from 10 mm (0.4 in) in the driest month (February) to 70 mm (2.8 in) in the wettest (June). Summer is the rainiest season due to afternoon thunderstorms, which can be accompanied by hail.
On average, 77 cm (30 in) of snow fall per year. Usually it snows from October to early May. Here is the average precipitation.

On average, there are around 2,270 sunshine hours per year. Here are the average sunshine hours per day.

Best Time

The best time to visit Saskatoon is summer, from June to August, since it is the mildest season. However, at night it can be cold, while during the day it can be hot.
Summer is normally the best season, but since it can sometimes get very hot, you can choose the months of May and September.