Oswego Weather in June

The climate in Oswego during June can be summarized as hot, humid and wet.

June is in the summer in Oswego and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (85°F), whilst at night 18°C (64°F) is normal.

On average June is the 2nd wettest month of the year in Oswego with around 128mm 5.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.4 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 June 2025.