Cottage Grove (MN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cottage Grove.
Climate overview of Cottage Grove
The climate in Cottage Grove, Minnesota, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in July to -5°C (23°F) in January.
Annual rain/snowfall is moderate at around 871 mm (34 in), with June being the wettest month. The city also has a distinct dry season from January to February, with warm summers and very cold winters. The most sunshine falls in July, with an average of 11.7 hours of daily sunshine.
Cottage Grove Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cottage Grove - and find the best time to visit.
Monthly Temperature in Cottage Grove
In Cottage Grove, temperatures differ significantly between summer and winter months. 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 -5°C (23°F).
At night, temperatures range from around 18°C (64°F) in July to -14°C (7°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cottage Grove
On average, Cottage Grove receives a reasonable amount of rain/snowfall, with an annual precipitation of 871 mm (34 in). Cottage Grove can be quite wet during June, receiving approximately 138 mm (5.4 in) of precipitation over 14 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 17 mm (0.7 in) of precipitation spread across 7 snowy days. For more details, please visit our Cottage Grove Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Cottage Grove
Cottage Grove can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.7 hours of sunshine daily. In contrast, the city experiences much darker days in November, with only 3.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Cottage Grove by Month
The relative humidity is high throughout the year in Cottage Grove.
The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Cottage Grove
The average wind speed over the year ranges from 4 m/s (8 knots) to 6 m/s (12 knots). It is lower in July and August and higher in April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Cottage Grove
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: January, February, March and November
- Wettest months: April, May, June, July, August and September, when rainfall is highest.
- Seasonal pattern: A distinct dry season from January to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Cottage Grove
What is the best time to visit Cottage Grove?
September typically offers the most optimal weather in Cottage Grove. In contrast, January, February, March, November and December tend to have less optimal conditions. Cottage Grove has a distinct dry season from January to February, with warm summers and very cold winters.
What temperatures can I expect in Cottage Grove?
Daytime highs range from -5°C (23°F) in January to 28°C (82°F) in July. Nighttime lows range from -14°C (7°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Cottage Grove get?
Annual rainfall is around 871 mm (34 in). June is the wettest month with 138 mm (5.4 in), while January is the driest with 17 mm (0.7 in).
How sunny is Cottage Grove?
Cottage Grove receives around 2,713 hours of sunshine per year. July is the sunniest month with 351 hours, while November is the cloudiest with just 114 hours. Overall, Cottage Grove enjoys abundant sunshine.
Cottage Grove 3-Day Forecast
Cottage Grove (MN) 3-Day Forecast
Cottage Grove on the map
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