Climate Insights for Winona

The climate in Winona is cool. The average annual temperature is 9°C and approximately 1034mm of precipitation falls per year. Winona receives a notable amount of rainfall throughout the year, including during its driest month. Winona is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 137cm accumulating over the season.

Winona has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Winona is a moderately rainy area, receiving approximately 1034mm of precipitation annually, which averages out to around 86mm per month. The wettest month is June, averaging 147mm of rainfall. May and August also tend to see above-average precipitation. The driest month is January, with just 35mm. That's 112mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 137cm accumulating over the season. February typically sees the most snow at around 28cm.

Winona is mildly breezy, with an average annual wind speed of 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 13km/h in winter, 13km/h in spring, 10km/h in summer, 13km/h in autumn.

It is currently summer in Winona, which began on June 21, 2026. Winona 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 28°C, while the coldest stretch bottoms out in January near -11°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The best time to visit Winona is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 100mm per month. By contrast, July can be uncomfortably hot with highs reaching 28°C, while January is the coldest period with lows dropping to -11°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Winona 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.