Winthrop Harbor Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Winthrop Harbor.
Climate overview of Winthrop Harbor
Winthrop Harbor, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 26°C (79°F) in July, while winters cool to -1°C (30°F) in February.
The city receives around 961 mm (38 in) of rain/snowfall per year. June is the wettest month and January the driest. July is the sunniest month, averaging 10.6 hours of sunshine per day.
Winthrop Harbor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Winthrop Harbor — and find the best time to visit.
Monthly Temperature in Winthrop Harbor
Depending on the time of the year, temperatures range from comfortable to very cold in Winthrop Harbor. On average, daytime temperatures range from a comfortable 26°C (79°F) in July to a very cold -1°C (30°F) in February.
Nighttime temperatures range from 18°C (64°F) in July to -9°C (16°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Winthrop Harbor
Generally, Winthrop Harbor has a moderate amount of precipitation, averaging 961 mm (38 in) of rain/snowfall annually. The seasons in Winthrop Harbor bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 107 mm (4.2 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, January, experiences much less snowfall, totaling 40 mm (1.6 in) over 10 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Winthrop Harbor 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 Winthrop Harbor
In Winthrop Harbor, summer days are longer and more sunny, with daily sunshine hours peaking at 10.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.6 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Winthrop Harbor by Month
The relative humidity is high throughout the year in Winthrop Harbor.
The city experiences its highest humidity in December, reaching 76%. In May, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Winthrop Harbor
Rainfall during this time ranges from 93 mm (3.7 in) in August to 107 mm (4.2 in) in June. This means you can expect a mix of sunny days and occasional showers. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
Frequently asked questions about the climate in Winthrop Harbor
What is the best time to visit Winthrop Harbor?
July, August and September typically offer the most optimal weather in Winthrop Harbor. In contrast, January, February, March, April, November and December tend to have less optimal conditions.
What temperatures can I expect in Winthrop Harbor?
Daytime highs range from -1°C (30°F) in February to 26°C (79°F) in July. Nighttime lows range from -9°C (16°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Winthrop Harbor get?
Annual rainfall is around 961 mm (38 in). June is the wettest month with 107 mm (4.2 in), while January is the driest with 40 mm (1.6 in).
How sunny is Winthrop Harbor?
Winthrop Harbor receives around 2,509 hours of sunshine per year. July is the sunniest month with 319 hours, while December is the cloudiest with just 107 hours. Overall, Winthrop Harbor enjoys abundant sunshine.
Winthrop Harbor 3-Day Forecast
Winthrop Harbor 3-Day Forecast
Winthrop Harbor on the map
Winthrop Harbor is highlighted — select any city to see its climate.
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