Climate and monthly weather forecastPark Forest, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Park Forest, Illinois, with an average temperature ranging between min 18.9°F (-7.3°C) and max 29.7°F (-1.3°C). The coldest time of the year is January, with temperatures averaging a high of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Park Forest, Illinois, with an average temperature ranging between min 21.2°F (-6°C) and max 33.1°F (0.6°C). Entering February, Park Forest's average high-temperature reads an icy 33.1°F (0.6°C), indicating a close resemblance to the previous month's climate. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Park Forest, Illinois, with temperature in the range of an average low of 32.4°F (0.2°C) and an average high of 45.5°F (7.5°C). The start of March brings a rise in the average high-temperature, moving from a cold 33.1°F (0.6°C) in February to a frosty 45.5°F (7.5°C). Weather in March »Weather in April
April in Park Forest, Illinois, is a moderate spring month, with an average temperature varying between 41.7°F (5.4°C) and 56.7°F (13.7°C). April's arrival is marked by an increase in the average high-temperature, moving from a frosty 45.5°F (7.5°C) in March to a refreshing 56.7°F (13.7°C). Weather in April »Weather in May
May, the last month of the spring in Park Forest, is an agreeable month, with temperature in the range of an average low of 52.3°F (11.3°C) and an average high of 68.7°F (20.4°C). May marks a rise in the average high-temperature, moving from April's refreshing 56.7°F (13.7°C) to an agreeable 68.7°F (20.4°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Park Forest, Illinois, with an average temperature ranging between min 61.7°F (16.5°C) and max 77.7°F (25.4°C). The start of June brings a shift in the average high-temperature, increasing from May's agreeable 68.7°F (20.4°C) to a warm 77.7°F (25.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Park Forest, Illinois, with an average temperature ranging between min 65.8°F (18.8°C) and max 81.3°F (27.4°C). Park Forest's temperatures peak on average in July, reaching 81.3°F (27.4°C) at their highest and 65.8°F (18.8°C) at their lowest. July's mean heat index is evaluated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Park Forest, Illinois, with an average temperature ranging between min 64.6°F (18.1°C) and max 80.1°F (26.7°C). August's commencement is accompanied by an average high-temperature of a still moderately hot 80.1°F (26.7°C), diverging marginally from July's 81.3°F (27.4°C). Weather in August »Weather in September
September, the first month of the autumn in Park Forest, is also a moderately hot month, with an average temperature ranging between min 58.3°F (14.6°C) and max 73.9°F (23.3°C). September is characterized by a mild reduction in the average high-temperature, from 80.1°F (26.7°C) in August to a still moderately hot 73.9°F (23.3°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Park Forest, Illinois, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 61.2°F (16.2°C). October brings a decrease in the average high-temperature, shifting from a moderately hot 73.9°F (23.3°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Park Forest, Illinois, with an average temperature varying between 46.9°F (8.3°C) and 34.9°F (1.6°C). The arrival of November indicates a decrease in the average high-temperature, moving from a comfortable 61.2°F (16.2°C) in October to a chilly 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Park Forest, Illinois, with an average temperature fluctuating between 35.6°F (2°C) and 25.9°F (-3.4°C). The arrival of December signals a shift in temperature, down from a frosty 46.9°F (8.3°C) in November to a cold 35.6°F (2°C). Weather in December »Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Park Forest, the average lowest temperatures are observed in January, with a high of 29.7°F (-1.3°C) and a low of 18.9°F (-7.3°C).
The months with the highest humidity in Park Forest are January and February, with an average relative humidity of 82%.
In Park Forest, during the entire year, the rain falls for 155.6 days and collects up to 31.3" (795mm) of precipitation.
Months with snowfall are January through April, October through December.
January is the month with the most snowfall. Snow falls for 12.6 days and accumulates 4.53" (115mm) of snow.
Throughout the year, there are 44.6 snowfall days, and 16.46" (418mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 3.6h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The month with the most rainfall is May, when the rain falls for 17.4 days and typically aggregates up to 4.17" (106mm) of precipitation.
May through September are months without snowfall.
With an average of 15h and 6min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
July proves to be the warmest month in Park Forest, recording an average peak temperature of 81.3°F (27.4°C) and a minimum temperature of 65.8°F (18.8°C).
August has the most sunshine of the year, with an average of 10.1h of sunshine.
With an average relative humidity of 73%, October is the least humid month.
December is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.54" (39mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 12min of daylight.
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Park Forest, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Park Forest, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Park Forest, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Park Forest, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Park Forest, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.69" - Average rainfall in March:
2.09" - Average rainfall in April:
3.43" - Average rainfall in May:
4.17" - Average rainfall in June:
3.82"
- Average rainfall in July:
3.31" - Average rainfall in August:
2.56" - Average rainfall in September:
2.48" - Average rainfall in October:
2.76" - Average rainfall in November:
1.69" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days
Park Forest, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Park Forest, IL
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Park Forest, IL
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.9 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.3 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Park Forest, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 36min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Park Forest, IL
- Average sunshine days in January:
13 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
15 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index
Park Forest, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Park Forest, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Park Forest, IL
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
