Oswego Weather in September

With daytime temperatures of 25°C (77°F) and nighttime lows of 12°C (54°F), September in Oswego brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 84 mm (3.3 in) falls on average.

Rainfall in Oswego in September

Typically, about 9 days will experience rainfall, with an average of 84 mm (3.3 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Oswego in September

The temperature in Oswego in September is excellent. Daytime highs reach 25°C (77°F), with nights dropping to 12°C (54°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Oswego in September

Enjoy a sunny month with about 226 hours of sunshine, the clear skies make Oswego even more beautiful.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Oswego.

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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 Oswego's climate page.

Oswego Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 30%  

Precipitation 84 mm (3.3 in)  

Rainy days 9 days  

Humidity 71% *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (50 KM, 31 Miles).

What to Wear in Oswego in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Oswego in September

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

Swimming

9/10

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 Oswego's climate page.

More climate data for Oswego

Temperature Rainfall Sunshine Humidity

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