Climate Insights for Portage la Prairie

The climate in Portage la Prairie is cool. The average annual temperature is 4°C and approximately 556mm of precipitation falls per year. September is the wettest month, receiving around 99mm of rainfall. Portage la Prairie is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -17°C. Snowfall occurs from January to December, with around 130cm accumulating over the season.

Portage la Prairie has a wide annual temperature range, spanning 43°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 21°C. February brings the harshest conditions, with lows dropping to -17°C and an average temperature of -13°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 10°C shift in average temperatures.

Portage la Prairie is a relatively dry area, receiving approximately 556mm of precipitation annually, which averages out to around 46mm per month. The wettest month is September, averaging 99mm of rainfall. June and July also tend to see above-average precipitation. The driest month is February, with just 16mm. That's 82mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 130cm accumulating over the season. December typically sees the most snow at around 28cm.

Portage la Prairie is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Portage la Prairie, which began on June 21, 2026. Portage la Prairie is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 26°C, while the coldest stretch bottoms out in February near -17°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Portage la Prairie is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 69mm per month. By contrast, February can be quite cold with temperatures dropping to -17°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Portage la Prairie based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.