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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, the same as December, is a wintry winter month in Johnsonville, Illinois, with an average temperature varying between 36.7°F (2.6°C) and 24.3°F (-4.3°C). Johnsonville notes the coldest temperatures in January, with a high average of 36.7°F (2.6°C) and a low of 24.3°F (-4.3°C). Weather in January »
Weather in February
February, the last month of the winter in Johnsonville, is also a wintry month, with an average temperature varying between 41.7°F (5.4°C) and 28.2°F (-2.1°C). The onset of February marks an average high-temperature of a still wintry 41.7°F (5.4°C), hardly differing from January's 36.7°F (2.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Johnsonville, Illinois, with an average temperature ranging between max 53.2°F (11.8°C) and min 37.8°F (3.2°C). An increase in the average high-temperature marks March, moving from February's cold 41.7°F (5.4°C) to a fresh 53.2°F (11.8°C). Weather in March »
Weather in April
April is an enjoyable spring month in Johnsonville, Illinois, with an average temperature ranging between min 47.5°F (8.6°C) and max 64.4°F (18°C). April comes with an increase, with the average high-temperature moving from a cool 53.2°F (11.8°C) in March to a refreshing 64.4°F (18°C). Weather in April »
Weather in May
May, the last month of the spring in Johnsonville, is a warm month, with an average temperature varying between 57.9°F (14.4°C) and 73.9°F (23.3°C). In Johnsonville, stepping into May brings a temperature increase, moving up from April's refreshing 64.4°F (18°C) to a moderately hot 73.9°F (23.3°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Johnsonville, Illinois, with an average temperature varying between 83.1°F (28.4°C) and 66°F (18.9°C). A rise in the average high-temperature is observed during June, moving from a warm 73.9°F (23.3°C) in May to a still moderately hot 83.1°F (28.4°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Johnsonville, Illinois, with an average temperature varying between 84.7°F (29.3°C) and 67.5°F (19.7°C). Johnsonville reaches its highest average temperatures in July, measuring 84.7°F (29.3°C) at the peak and 67.5°F (19.7°C) at the lowest. During July, the heat index is calculated to be a sweltering 96.8°F (36°C). Weather in July »
Weather in August
August, the last month of the summer in Johnsonville, is also a moderately hot month, with temperature in the range of an average high of 82.9°F (28.3°C) and an average low of 65.7°F (18.7°C). Johnsonville notes an average high-temperature of a still moderately hot 82.9°F (28.3°C) in August, hardly diverging from July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Johnsonville, Illinois, with an average temperature varying between 59.9°F (15.5°C) and 78.6°F (25.9°C). Johnsonville sees the arrival of September with an average high-temperature of a still warm 78.6°F (25.9°C), indicating a subtle variation from August. Weather in September »
Weather in October
October, like September, in Johnsonville, Illinois, is another refreshing autumn month, with an average temperature varying between 49.1°F (9.5°C) and 65.8°F (18.8°C). Johnsonville's weather in October involves a decrease in the average high-temperature, moving down from September's warm 78.6°F (25.9°C) to a refreshing 65.8°F (18.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Johnsonville, Illinois, with temperature in the range of an average high of 52°F (11.1°C) and an average low of 37.9°F (3.3°C). The onset of November coincides with a reduction in the average high-temperature, falling from an enjoyable 65.8°F (18.8°C) in October to a fresh 52°F (11.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Johnsonville, Illinois, with an average temperature varying between 41.9°F (5.5°C) and 30.4°F (-0.9°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a cool 52°F (11.1°C) in November to a wintry 41.9°F (5.5°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 time of year in Johnsonville?
January, having an average high-temperature of 36.7°F (2.6°C) and an average low-temperature of 24.3°F (-4.3°C), is the coldest month in Johnsonville, Illinois.
How many days does it rain in Johnsonville?
In Johnsonville, Illinois, during the entire year, the rain falls for 167.3 days and collects up to 37.17" (944mm) of precipitation.
When does it snow in Johnsonville?
Months with snowfall in Johnsonville are January through April, October through December.
When does it snow the most in Johnsonville?
January is the month with the most snowfall. Snow falls for 7.1 days and accumulates 2.05" (52mm) of snow.
How many days does it snow in Johnsonville?
In Johnsonville, during the entire year, snow falls for 22.8 days and aggregates up to 7.09" (180mm) of snow.
What is the month with the least sunshine in Johnsonville?
The month with the least sunshine is January, with an average of 4.4h of sunshine.
When is the lowest UV index in Johnsonville?
The months with the lowest UV index in Johnsonville, Illinois, are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Johnsonville?
February and September are months with the least rain when the rain falls for 9.7 days and typically aggregates up to 2.09" (53mm) of rain.
When is Daylight Saving Time (DST) in Johnsonville?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Johnsonville, 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 is the rainiest month in Johnsonville?
April is the month with the most rainfall in Johnsonville, Illinois. Rain falls for 15.7 days and accumulates 4.88" (124mm) of precipitation.
What are the most humid months in Johnsonville?
May and July, with an average relative humidity of 80%, are most humid months in Johnsonville, Illinois.
When it does not snow in Johnsonville?
May through September are months without snowfall.
What are the months with the highest UV index in Johnsonville?
The months with the highest UV index in Johnsonville are May through August, with an average maximum UV index of 6.
When are the longest days in Johnsonville?
June has the longest days of the year in Johnsonville, with an average of 14h and 48min of daylight.
What month has the most sunshine in Johnsonville?
June has the most sunshine of the year in Johnsonville, with an average of 10.5h of sunshine.
What month is the hottest in Johnsonville?
July, characterized by an average high temperature of 84.7°F (29.3°C) and a low temperature of 67.5°F (19.7°C), is generally the warmest month in Johnsonville.
What is the least humid month in Johnsonville?
The least humid month in Johnsonville, Illinois, is October, with an average relative humidity of 70%.
What is the month with the shortest days in Johnsonville?
December has the shortest days of the year in Johnsonville, with an average of 9h and 30min of daylight.
Average temperature
Johnsonville, IL
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Johnsonville, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Johnsonville, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.1mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Johnsonville, IL
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Johnsonville, IL
- Average rainfall in January:
2.44" - Average rainfall in February:
2.09" - Average rainfall in March:
3.15" - Average rainfall in April:
4.88" - Average rainfall in May:
4.21" - Average rainfall in June:
3.9"
- Average rainfall in July:
3.39" - Average rainfall in August:
2.91" - Average rainfall in September:
2.09" - Average rainfall in October:
2.99" - Average rainfall in November:
2.52" - Average rainfall in December:
2.6"
The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").
Average rainfall days
Johnsonville, IL
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.7 days - Average rainfall days in March:
15.5 days - Average rainfall days in April:
15.7 days - Average rainfall days in May:
19.9 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
18.2 days - Average rainfall days in August:
15.4 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall
Johnsonville, IL
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Johnsonville, IL
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
6 days - Average snowfall days in March:
2.5 days - Average snowfall days in April:
0.7 days - Average snowfall days in May:
0 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:
0.1 days - Average snowfall days in November:
1.7 days - Average snowfall days in December:
4.7 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Johnsonville, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Johnsonville, IL
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
12 days - Average sunshine days in May:
9 days - Average sunshine days in June:
9.1 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.7 days - Average sunshine days in September:
14.4 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
16.9 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).
Average UV index
Johnsonville, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Johnsonville, IL
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility
Johnsonville, 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).
Johnsonville, Illinois, USA
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