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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in Grandwood Park, Illinois, with an average temperature varying between 16.5°F (-8.6°C) and 27.5°F (-2.5°C). With average high temperatures of 27.5°F (-2.5°C) and lows of 16.5°F (-8.6°C), January is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Grandwood Park, is also a subzero cold month, with an average temperature varying between 30.6°F (-0.8°C) and 18.7°F (-7.4°C). February brings a marginal elevation to a still subzero cold 30.6°F (-0.8°C) from January's 27.5°F (-2.5°C) in Grandwood Park's average high-temperatures. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Grandwood Park, Illinois, with an average temperature ranging between min 30.2°F (-1°C) and max 42.8°F (6°C). An escalation in the average high-temperature is seen with the onset of March, moving from a freezing cold 30.6°F (-0.8°C) in February to a chilly 42.8°F (6°C). Weather in March »
Weather in April
April is a cool spring month in Grandwood Park, Illinois, with an average temperature varying between 38.8°F (3.8°C) and 53.6°F (12°C). An increase in the average high-temperature marks April, moving from March's frosty 42.8°F (6°C) to a fresh 53.6°F (12°C). Weather in April »
Weather in May
May, the last month of the spring in Grandwood Park, is a refreshing month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 49.6°F (9.8°C). With the onset of May, Grandwood Park's weather sees a temperature rise, transitioning from a fresh 53.6°F (12°C) in April to a comfortable 65.3°F (18.5°C). Weather in May »
Weather in June
June, the first month of the summer in Grandwood Park, is a warm month, with an average temperature varying between 58.8°F (14.9°C) and 74.8°F (23.8°C). June's arrival signals a temperature shift, moving from a refreshing 65.3°F (18.5°C) in May to a moderately hot 74.8°F (23.8°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Grandwood Park, Illinois, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 79.9°F (26.6°C). July registers as the month with the highest average temperatures, reaching 79.9°F (26.6°C) at its peak and 64.4°F (18°C) at the lowest. Weather in July »
Weather in August
August, the last month of the summer in Grandwood Park, is another warm month, with an average temperature ranging between max 78.6°F (25.9°C) and min 63.1°F (17.3°C). The arrival of August sees an average high-temperature of a still moderately hot 78.6°F (25.9°C), hardly diverging from July's 79.9°F (26.6°C). Weather in August »
Weather in September
September, the first month of the autumn in Grandwood Park, is also an agreeable month, with an average temperature varying between 57°F (13.9°C) and 72.3°F (22.4°C). With the onset of September, the average high-temperature subtly recedes from August's moderately hot 78.6°F (25.9°C) to a pleasant 72.3°F (22.4°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Grandwood Park, Illinois, with an average temperature ranging between max 59°F (15°C) and min 45.1°F (7.3°C). Grandwood Park's weather in October involves a decrease in the average high-temperature, moving down from September's pleasant 72.3°F (22.4°C) to a refreshing 59°F (15°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Grandwood Park, Illinois, with an average temperature fluctuating between 45.1°F (7.3°C) and 32.9°F (0.5°C). Start of November brings a shift in the average high-temperature, falling from October's refreshing 59°F (15°C) to a chilly 45.1°F (7.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Grandwood Park, Illinois, with an average temperature fluctuating between 23.9°F (-4.5°C) and 33.6°F (0.9°C). With December's onset, the average high-temperature recedes from November's chilly 45.1°F (7.3°C) to a wintry 33.6°F (0.9°C). Weather in December »
Updated: Aug 27, 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
What part of the year is the coldest?
January is the coldest month in Grandwood Park, with the temperature often reaching an average high of 27.5°F (-2.5°C) and an average low of 16.5°F (-8.6°C).
What are the most humid months?
The months with the highest humidity are January and February, with an average relative humidity of 83%.
How much does it rain?
Throughout the year, there are 142.3 rainfall days, and 21.97" (558mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall in Grandwood Park.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 13.7 days and accumulates 3.58" (91mm) of snow.
How many days does it snow?
In Grandwood Park, during the entire year, snow falls for 49.5 days and aggregates up to 13.54" (344mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.7h of sunshine.
What are the months with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
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.
What is the rainiest month in Grandwood Park?
April is the month with the most rainfall. Rain falls for 14.8 days and accumulates 2.72" (69mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
What is the warmest month?
Grandwood Park's temperature records reveal July as the warmest month, marked by average highs of 79.9°F (26.6°C) and lows of 64.4°F (18°C).
When is the highest UV index?
The months with the highest UV index are July and August, with an average maximum UV index of 6.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.2h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 74%.
What is the driest month in Grandwood Park?
December is the month with the least rainfall. Rain falls for 8.2 days and accumulates 0.98" (25mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
Grandwood Park, IL
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure
Grandwood Park, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Grandwood Park, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Grandwood Park, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Grandwood Park, IL
- Average rainfall in January:
1.14" - Average rainfall in February:
1.22" - Average rainfall in March:
1.18" - Average rainfall in April:
2.72" - Average rainfall in May:
2.44" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.64" - Average rainfall in September:
1.57" - Average rainfall in October:
1.89" - Average rainfall in November:
1.1" - Average rainfall in December:
0.98"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days
Grandwood Park, IL
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
5 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
16 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall
Grandwood Park, IL
- Average snowfall in January:
3.58" - Average snowfall in February:
3.54" - Average snowfall in March:
1.22" - Average snowfall in April:
1.61" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Grandwood Park, IL
- Average snowfall days in January:
13.7 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
7.1 days - Average snowfall days in April:
2.5 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
4.4 days - Average snowfall days in December:
10.4 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Grandwood Park, IL
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Grandwood Park, IL
- Average sunshine days in January:
13.7 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10.8 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
11.7 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
15.4 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index
Grandwood Park, IL
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Grandwood Park, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility
Grandwood Park, 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).
Grandwood Park, Illinois, USA
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