Delavan (WI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Delavan.
Climate overview of Delavan
Delavan, Wisconsin, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to -2°C (28°F).
Rain/snowfall is high, totalling around 1001 mm (39 in) per year. June is the wettest month and January the driest. The city also experiences warm summers and very cold winters. The most sunshine falls in July, with an average of 10.6 hours of daily sunshine.
Delavan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Delavan - and find the best time to visit.
Monthly Temperature in Delavan
Visitors to Delavan can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -2°C (28°F) during cooler months like January.
At night, you can expect temperatures ranging from 16°C (61°F) in July to around -11°C (12°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Delavan
Delavan is known for its substantial rain/snowfall, with annual precipitation reaching 1001 mm (39 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 155 mm (6.1 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snowfall, with 41 mm (1.6 in) over 10 snowy days. For more details, please visit our Delavan 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 Delavan
Seasonal changes in sunshine hours are quite dramatic in Delavan. While July receives considerable daily sunshine with up to 10.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.5 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 Delavan by Month
The relative humidity is high throughout the year in Delavan.
The city experiences its highest humidity in December, reaching 76%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Delavan
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and September
- Warmest weather: July and August
- Most sunshine: June and July
- Wettest months: April, May, June, July, August and September, when rainfall is highest.
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Delavan
What is the best time to visit Delavan?
May, July and September typically offer the most optimal weather in Delavan. In contrast, January, February, March, November and December tend to have less optimal conditions. Delavan has warm summers and very cold winters.
What temperatures can I expect in Delavan?
Daytime highs range from -2°C (28°F) in January to 28°C (82°F) in July. Nighttime lows range from -11°C (12°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Delavan get?
Annual rainfall is around 1001 mm (39 in). June is the wettest month with 155 mm (6.1 in), while January is the driest with 41 mm (1.6 in).
How sunny is Delavan?
Delavan receives around 2,486 hours of sunshine per year. July is the sunniest month with 319 hours, while December is the cloudiest with just 104 hours. Overall, Delavan enjoys abundant sunshine.
Delavan 3-Day Forecast
Delavan on the map
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