Oswego Weather in July

The climate in Oswego during July can be summarized as warm, humid and reasonably dry.

July is in the summer in Oswego and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 17°C (62°F) is normal.

On average July is the driest month of the year in Oswego with around 69mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.2 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Oswego in July 2025.