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Oswego
Weather averages
ClimateForecastNovemberDecember >>

Oswego (IL) Climate by Month

The graphs below provide an overview of the climate in Oswego (Illinois), the United States of America. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year
* Data from: Chicago, the United States of America (50 KM, 31 Miles).

Daily percent of sunshine

The mean percent of hours of sunhours during the day over the year
* Data from: Chicago, the United States of America (50 KM, 31 Miles).

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average humidity

The mean monthly relative humidity over the year
* Data from: Chicago, the United States of America (50 KM, 31 Miles).

Forecast for Oswego (IL)

Sat   Nov 02
15°C | -1°C
SE 14 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Sun   Nov 03
18°C | 5°C
SE 25 km/h
4.2 mm
overcast and rain

overcast and rain

hourly forecast
Mon   Nov 04
21°C | 15°C
S 29 km/h
17 mm
overcast and heavy rain

overcast and heavy rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Oswego in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is summer in Oswego?
    The hottest season / summer takes place in June, July, August and September.
  • When is winter in Oswego?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Oswego?
    July has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Oswego?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Oswego?
    June tops the wettest month list with 130 mm of rainfall.
  • Which is the driest month in Oswego?
    January is the driest month with 47 mm of precipitation.
  • Which is the sunniest month in Oswego?
    July is the sunniest month with an average of 319 hours of sunshine.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     


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