Expand
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 another subzero cold winter month in Leaf River, Illinois, with temperature in the range of an average low of 13.8°F (-10.1°C) and an average high of 26.1°F (-3.3°C). In Leaf River, the lowest temperatures are generally noted in January, averaging a high of 26.1°F (-3.3°C) and a low of 13.8°F (-10.1°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Leaf River, Illinois, with an average temperature ranging between min 17.4°F (-8.1°C) and max 30.4°F (-0.9°C). February's arrival shows an average high-temperature of a still freezing cold 30.4°F (-0.9°C), hardly different from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Leaf River, Illinois, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 29.7°F (-1.3°C). With the arrival of March, the average high-temperature transitions from a subzero cold 30.4°F (-0.9°C) in February to a frosty 44.2°F (6.8°C). Weather in March »
Weather in April
April is a moderate spring month in Leaf River, Illinois, with temperature in the range of an average high of 56.5°F (13.6°C) and an average low of 40.3°F (4.6°C). As April arrives, a rise in the average high-temperature is observed, moving from a chilly 44.2°F (6.8°C) in March to a moderate 56.5°F (13.6°C). Weather in April »
Weather in May
May, the last month of the spring in Leaf River, is an agreeable month, with an average temperature ranging between min 51.4°F (10.8°C) and max 68.7°F (20.4°C). The shift into May is marked by a rise in the average high-temperature, moving from April's moderate 56.5°F (13.6°C) to a pleasant 68.7°F (20.4°C). Weather in May »
Weather in June
June, the first month of the summer in Leaf River, is a warm month, with temperature in the range of an average low of 60.3°F (15.7°C) and an average high of 77.4°F (25.2°C). Leaf River's transition into June brings a slight rise in the average high-temperature, moving from an agreeable 68.7°F (20.4°C) in May to a warm 77.4°F (25.2°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Leaf River, Illinois, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 79.9°F (26.6°C). July is the month when Leaf River's temperatures reach their peak, with averages of 79.9°F (26.6°C) and lows of 63.1°F (17.3°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Leaf River, Illinois, with an average temperature ranging between min 61°F (16.1°C) and max 78.4°F (25.8°C). The advent of August signifies a minor shift to an average high-temperature of a still moderately hot 78.4°F (25.8°C), aligning closely with July. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Leaf River, Illinois, with an average temperature ranging between min 54.5°F (12.5°C) and max 73°F (22.8°C). The shift from August to September includes a small decrease in the average high-temperature, from a warm 78.4°F (25.8°C) to an agreeable 73°F (22.8°C). Weather in September »
Weather in October
October, the same as September, in Leaf River, Illinois, is a moderate autumn month, with an average temperature ranging between min 43.7°F (6.5°C) and max 59.7°F (15.4°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a pleasant 73°F (22.8°C) to a moderate 59.7°F (15.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Leaf River, is also a frosty month, with an average temperature varying between 44.8°F (7.1°C) and 31.6°F (-0.2°C). The onset of November brings a clear temperature shift, with the average high-temperature decreasing from a mild 59.7°F (15.4°C) in October to a chilly 44.8°F (7.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Leaf River, Illinois, with an average temperature fluctuating between 32.4°F (0.2°C) and 22.3°F (-5.4°C). December is characterized by a reduction in the average high-temperature, from a chilly 44.8°F (7.1°C) in November to a wintry 32.4°F (0.2°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 is the coldest month in Leaf River?
January, characterized by an average high temperature of 26.1°F (-3.3°C) and a low temperature of 13.8°F (-10.1°C), is generally the coldest month in Leaf River, Illinois.
What is the most humid month in Leaf River?
January is the most humid month in Leaf River, with an average relative humidity of 86%.
How much does it rain in Leaf River?
Throughout the year, there are 154.8 rainfall days, and 32.36" (822mm) of precipitation is accumulated.
When does it snow in Leaf River?
January through May, October through December are months with snowfall in Leaf River.
When does it snow the most in Leaf River?
January is the month with the most snowfall in Leaf River. Snow falls for 12.1 days and accumulates 5.79" (147mm) of snow.
How much does it snow in Leaf River?
In Leaf River, during the entire year, snow falls for 45.5 days and aggregates up to 19.25" (489mm) of snow.
What is the month with the least sunshine in Leaf River?
January has the least sunshine of the year in Leaf River, with an average of 3.6h of sunshine.
When is the lowest UV index in Leaf River?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
What is the driest month in Leaf River?
The month with the least rainfall in Leaf River, Illinois, is February, when the rain falls for 5.3 days and typically collects 1.57" (40mm) of precipitation.
When is Daylight Saving Time (DST) in Leaf River?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Leaf River, Illinois, 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 are the least humid months in Leaf River?
April and October, with an average relative humidity of 75%, are the least humid months in Leaf River, Illinois.
What is the rainiest month in Leaf River?
The month with the most rainfall in Leaf River, Illinois, is May, when the rain falls for 19.1 days and typically aggregates up to 4.53" (115mm) of precipitation.
When is the highest UV index in Leaf River?
May through August, with an average maximum UV index of 5, are months with the highest UV index in Leaf River, Illinois.
When it does not snow in Leaf River?
In Leaf River, Illinois, snow does not fall in June through September.
When are the longest days in Leaf River?
The month with the longest days in Leaf River is June, with an average of 15h and 12min of daylight.
What time of the year is the hottest in Leaf River?
July proves to be the warmest month, recording an average peak temperature of 79.9°F (26.6°C) and a minimum temperature of 63.1°F (17.3°C).
What month has the most sunshine in Leaf River?
July has the most sunshine of the year, with an average of 9.5h of sunshine.
What is the month with the shortest days in Leaf River?
December has the shortest days of the year in Leaf River, Illinois, with an average of 9h and 12min of daylight.
Average temperature
Leaf River, 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 (26.1°F).
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure
Leaf River, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"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:
29.91"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:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Leaf River, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
10mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- 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:
9.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Leaf River, IL
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall
Leaf River, IL
- Average rainfall in January:
1.65" - Average rainfall in February:
1.57" - Average rainfall in March:
1.97" - Average rainfall in April:
3.54" - Average rainfall in May:
4.53" - Average rainfall in June:
4.37"
- Average rainfall in July:
3.23" - Average rainfall in August:
2.68" - Average rainfall in September:
2.44" - Average rainfall in October:
2.87" - Average rainfall in November:
1.81" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days
Leaf River, IL
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
19.1 days - Average rainfall days in June:
18.6 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Leaf River, IL
- Average snowfall in January:
5.79" - Average snowfall in February:
4.65" - Average snowfall in March:
1.93" - Average snowfall in April:
0.91" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Leaf River, IL
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
1.8 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:
0.8 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.5 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Leaf River, 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 1min - 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 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 3min - Average sunshine in August:
9h and 2min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Leaf River, IL
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
13.5 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
17 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (9.2 days).
Average UV index
Leaf River, IL
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Leaf River, IL
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility
Leaf River, IL
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Leaf River, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location