ClimateForecastNovemberDecember >>

Prospect Heights (IL) Climate by Month

Prospect Heights experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It also experiences much rain/snowfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

The climate in Prospect Heights is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 29°C in July. In January, the coolest month of the year, temperatures drop to a very cold -1°C. At night, expect cooler temperatures, averaging -9°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Prospect Heights has a notably wet climate with abundant precipitation, recording 1030 mm of rain/snowfall per year. Prospect Heights can be quite wet during June, receiving approximately 121 mm of precipitation over 14 rainy days. In contrast January, experiences much drier conditions, with 46 mm of snowfall, spread across 10 snowy days.

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

Sunshine over the year

Prospect Heights can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.6 hours of sunlight per day.

Monthly hours of sunshine

Data from: Chicago, the United States of America (12 KM, 7 Miles).

Daily hours of sunshine

Data from: Chicago, the United States of America (12 KM, 7 Miles).

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

During the months of May, June 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 winter in Prospect Heights?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Prospect Heights?
    July has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Prospect Heights?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Prospect Heights?
    June tops the wettest month list with 121 mm of rainfall.
  • Which is the driest month in Prospect Heights?
    January is the driest month with 46 mm of precipitation.
  • Which is the sunniest month in Prospect Heights?
    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.

    Forecast for Prospect Heights (IL)

    Sat   Nov 23
    7°C | 2°C
    SW 14 km/h
    0.1 mm
    broken clouds and small chance of slight rain

    broken clouds and small chance of slight rain

    Sun   Nov 24
    11°C | 2°C
    SE 14 km/h
    broken clouds and no rain

    broken clouds and no rain

    Mon   Nov 25
    10°C | -1°C
    NW 22 km/h
    overcast and no rain

    overcast and no rain