Winthrop Harbor Weather in September

Winthrop Harbor in September sees high temperatures, with highs around 22°C (72°F) and overnight lows of 13°C (55°F). Rainfall is fairly high at around 94 mm (3.7 in) on average, so pack waterproofs just in case.

Rainfall in Winthrop Harbor in September

Historically, September sees about 10 days of rain, with a monthly average of 94 mm (3.7 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Winthrop Harbor in September

If you're visiting Winthrop Harbor in September, expect perfect temperatures with highs of 22°C (72°F) and overnight lows of 13°C (55°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Winthrop Harbor in September

The city usually sees around 226 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Winthrop Harbor.

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• January
• February
• March
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• May
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• October
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For a detailed overview over the year and the best time to visit the United States of America, check out our Winthrop Harbor's climate page.

Winthrop Harbor Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 33%  

Precipitation 94 mm (3.7 in)  

Rainy days 10 days  

Humidity 71% *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (55 KM, 34 Miles).

What to Wear in Winthrop Harbor in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Winthrop Harbor in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Winthrop Harbor's climate page.

More climate data for Winthrop Harbor

Temperature Rainfall Sunshine Humidity

See the full Winthrop Harbor climate overview or explore weather in the United States of America.