Winona (MN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Winona.
Climate overview of Winona
Winona, Minnesota, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to -4°C (25°F).
Annual rain/snowfall is moderate at around 926 mm (36 in), with August being the wettest month. The city also has a distinct dry season from January to February, with warm summers and very cold winters.
Winona Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Winona - and find the best time to visit.
Monthly Temperature in Winona
Visitors to Winona can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -4°C (25°F).
At night, temperatures range from around 17°C (63°F) in July to -13°C (9°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Winona
Generally, Winona experiences moderate precipitation patterns, averaging 926 mm (36 in) yearly. Winona can be quite wet during August, receiving approximately 137 mm (5.4 in) of precipitation over 11 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 23 mm (0.9 in) of precipitation spread across 8 snowy days. For more details, please visit our Winona Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in Winona by Month
The relative humidity is high throughout the year in Winona.
The city experiences its highest humidity in September, reaching 76%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Winona
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and September
- Warmest weather: July and August
- Fewest rainy days: January, February, March and November
- Seasonal pattern: A distinct dry season from January to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -13°C (9°F).
Frequently asked questions about the climate in Winona
What is the best time to visit Winona?
July and September typically offer the most optimal weather in Winona. In contrast, January, February, March, November and December tend to have less optimal conditions. Winona has a distinct dry season from January to February, with warm summers and very cold winters.
What temperatures can I expect in Winona?
Daytime highs range from -4°C (25°F) in January to 28°C (82°F) in July. Nighttime lows range from -13°C (9°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Winona get?
Annual rainfall is around 926 mm (36 in). August is the wettest month with 137 mm (5.4 in), while January is the driest with 23 mm (0.9 in).
Winona 3-Day Forecast
Winona on the map
Winona is highlighted - select any city to see its climate.
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