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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
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Old Mill Creek, Illinois, with temperature in the range of an average high of 27.9°F (-2.3°C) and an average low of 18.3°F (-7.6°C). January proves to be the coldest month, recording an average maximum temperature of 27.9°F (-2.3°C) and a minimum temperature of 18.3°F (-7.6°C). Weather in January »
Weather in February
February, the last month of the winter in Old Mill Creek, is another freezing cold month, with an average temperature varying between 30.6°F (-0.8°C) and 20.7°F (-6.3°C). With the onset of February, the average high-temperature registers at a still subzero cold 30.6°F (-0.8°C), subtly different from January's 27.9°F (-2.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Old Mill Creek, Illinois, with temperature in the range of an average low of 30.6°F (-0.8°C) and an average high of 41.2°F (5.1°C). The beginning of March signals a rise in the average high-temperature, moving from a freezing cold 30.6°F (-0.8°C) in February to a wintry 41.2°F (5.1°C). Weather in March »
Weather in April
April in Old Mill Creek, Illinois, is a cool spring month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 50.7°F (10.4°C). With the onset of April, Old Mill Creek sees a temperature rise, with the average high-temperature moving from March's cold 41.2°F (5.1°C) to a cool 50.7°F (10.4°C). Weather in April »
Weather in May
May, the last month of the spring in Old Mill Creek, is a comfortable month, with temperature in the range of an average high of 61.3°F (16.3°C) and an average low of 48.6°F (9.2°C). As Old Mill Creek transitions into May, a rise in the average high-temperature is observed, moving from a fresh 50.7°F (10.4°C) in April to an enjoyable 61.3°F (16.3°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Old Mill Creek, Illinois, with an average temperature fluctuating between 58.6°F (14.8°C) and 70.5°F (21.4°C). June indicates a change in the average high-temperature, moving up from an enjoyable 61.3°F (16.3°C) in May to a pleasant 70.5°F (21.4°C). Weather in June »
Weather in July
July is a moderately hot summer month in Old Mill Creek, Illinois, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 77.5°F (25.3°C). The month of July, characterized by an average high of 77.5°F (25.3°C) and a low of 65.3°F (18.5°C), is recognized as the warmest. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Old Mill Creek, Illinois, with an average temperature ranging between min 64.8°F (18.2°C) and max 77°F (25°C). Old Mill Creek registers an average high-temperature of a still warm 77°F (25°C) with the arrival of August, showing minor deviation from the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Old Mill Creek, is also an agreeable month, with an average temperature ranging between max 70.9°F (21.6°C) and min 58.5°F (14.7°C). The move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 77°F (25°C) to a pleasant 70.9°F (21.6°C). Weather in September »
Weather in October
October, like September, is another refreshing autumn month in Old Mill Creek, Illinois, with an average temperature ranging between min 46.9°F (8.3°C) and max 58.3°F (14.6°C). October brings a decrease in the average high-temperature, shifting from an agreeable 70.9°F (21.6°C) in September to a mild 58.3°F (14.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Old Mill Creek, is another chilly month, with an average temperature varying between 34.7°F (1.5°C) and 45.1°F (7.3°C). With November's onset, the average high-temperature recedes from October's moderate 58.3°F (14.6°C) to a chilly 45.1°F (7.3°C). Weather in November »
Weather in December
December, the first month of the winter in Old Mill Creek, is still a cold month, with an average temperature ranging between max 34°F (1.1°C) and min 25.3°F (-3.7°C). A moderate decline in the average high-temperature is seen during December, decreasing from a chilly 45.1°F (7.3°C) in November to an icy 34°F (1.1°C). Weather in December »
Updated: Feb 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
What are the coldest months in Old Mill Creek?
January is the coldest month, with the temperature often reaching an average high of 27.9°F (-2.3°C) and an average low of 18.3°F (-7.6°C).
What is the most humid month in Old Mill Creek?
The most humid month is January, with an average relative humidity of 83%.
How many days does it rain in Old Mill Creek?
In Old Mill Creek, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.
When does it snow in Old Mill Creek?
January through April, October through December are months with snowfall in Old Mill Creek.
How many days does it snow in Old Mill Creek?
In Old Mill Creek, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.
What is the month with the least sunshine in Old Mill Creek?
With an average of 3.7h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index in Old Mill Creek?
The months with the lowest UV index in Old Mill Creek, Illinois, are January and December, with an average maximum UV index of 1.
What is the snowiest month in Old Mill Creek?
The month with the most snowfall is February, when snow falls for 9.8 days and typically aggregates up to 2.6" (66mm) of snow.
When is Daylight Saving Time (DST) in Old Mill Creek?
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.
When it does not snow in Old Mill Creek?
In Old Mill Creek, Illinois, snow does not fall in May through September.
What is the rainiest month in Old Mill Creek?
The months with the most rainfall in Old Mill Creek, Illinois, are June and August, with an average 2.68" (68mm) of precipitation.
When are the longest days in Old Mill Creek?
June has the longest days of the year in Old Mill Creek, with an average of 15h and 12min of daylight.
What part of the year is the hottest in Old Mill Creek?
July, having an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 65.3°F (18.5°C), is the warmest month in Old Mill Creek.
What are the months with the most sunshine in Old Mill Creek?
July and August, with an average of 10.5h of sunshine, are months with the most sunshine.
When is the highest UV index in Old Mill Creek?
The months with the highest UV index are July and August, with an average maximum UV index of 6.
What is the least humid month in Old Mill Creek?
October and November, with an average relative humidity of 75%, are the least humid months in Old Mill Creek.
What is the driest month in Old Mill Creek?
December is the month with the least rainfall in Old Mill Creek. Rain falls for 8.1 days and accumulates 0.91" (23mm) of precipitation.
What is the month with the shortest days in Old Mill Creek?
December has the shortest days of the year in Old Mill Creek, with an average of 9h and 6min of daylight.
Average temperature
Old Mill Creek, IL
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure
Old Mill Creek, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"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:
29.96"Hg - Average pressure in August:
29.97"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 month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Old Mill Creek, IL
- Average wind speed in January:
11.9mph - Average wind speed in February:
11.6mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.4mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.8mph - Average wind speed in October:
10.5mph - Average wind speed in November:
11.3mph - Average wind speed in December:
11.1mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity
Old Mill Creek, IL
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall
Old Mill Creek, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
1.06" - Average rainfall in March:
1.1" - Average rainfall in April:
2.44" - Average rainfall in May:
2.48" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.68" - Average rainfall in September:
1.73" - Average rainfall in October:
1.89" - Average rainfall in November:
1.02" - Average rainfall in December:
0.91"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days
Old Mill Creek, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
5.2 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
15.7 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
12.9 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall
Old Mill Creek, IL
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Old Mill Creek, IL
- Average snowfall days in January:
12.4 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
6.2 days - Average snowfall days in April:
2.4 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:
0.7 days - Average snowfall days in November:
4.2 days - Average snowfall days in December:
9.7 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Old Mill Creek, 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:
6h and 0min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 3min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Old Mill Creek, IL
- Average sunshine days in January:
12.4 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
12.2 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
14.6 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index
Old Mill Creek, 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
Old Mill Creek, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Old Mill Creek, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).