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, the same as December, is another cold winter month in Junction, Illinois, with an average temperature varying between 26.8°F (-2.9°C) and 39.7°F (4.3°C). Junction's coldest month, January, registers temperatures that range from a high of 39.7°F (4.3°C) to a low of 26.8°F (-2.9°C). Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Junction, Illinois, with temperature in the range of an average low of 30.6°F (-0.8°C) and an average high of 44.6°F (7°C). Junction observes an average high-temperature of a frosty 44.6°F (7°C) in February, barely different from 39.7°F (4.3°C) in January. Weather in February »
Weather in March
March, the first month of the spring in Junction, is a mild month, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 39.6°F (4.2°C). As February transitions into March, Junction sees a rise in the average high-temperature, moving from a chilly 44.6°F (7°C) to a refreshing 55.4°F (13°C). Weather in March »
Weather in April
April in Junction, Illinois, is a refreshing spring month, with an average temperature ranging between max 66.4°F (19.1°C) and min 48.9°F (9.4°C). With the onset of April, Junction's weather sees a temperature rise, transitioning from a moderate 55.4°F (13°C) in March to a still refreshing 66.4°F (19.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Junction, Illinois, with an average temperature ranging between max 75.6°F (24.2°C) and min 58.3°F (14.6°C). As Junction transitions into May, the average high-temperature shows a change, moving from an enjoyable 66.4°F (19.1°C) in April to a warm 75.6°F (24.2°C). Weather in May »
Weather in June
June, the first month of the summer in Junction, is still a warm month, with an average temperature ranging between min 66.4°F (19.1°C) and max 84°F (28.9°C). The start of June brings a subtle rise in the average high-temperature, moving from 75.6°F (24.2°C) in May to a still moderately hot 84°F (28.9°C). Weather in June »
Weather in July
July is a hot summer month in Junction, Illinois, with an average temperature varying between 68.4°F (20.2°C) and 86.2°F (30.1°C). July is Junction's warmest month, registering average high temperatures of 86.2°F (30.1°C) and lows of 68.4°F (20.2°C). July's heat index is appraised at a sweltering 98.6°F (37°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Junction, Illinois, with an average temperature varying between 84.9°F (29.4°C) and 66.2°F (19°C). Junction experiences a recorded average high-temperature of a warm 84.9°F (29.4°C) in August, closely aligned with July's 86.2°F (30.1°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Junction, Illinois, with an average temperature fluctuating between 79.9°F (26.6°C) and 60.8°F (16°C). Junction records an average high-temperature of a still warm 79.9°F (26.6°C) in September, closely mirroring the climate of the previous month. Weather in September »
Weather in October
October, like September, in Junction, Illinois, is another refreshing autumn month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 67.8°F (19.9°C). Junction in October experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 79.9°F (26.6°C) in September to a comfortable 67.8°F (19.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Junction, is also a fresh month, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 38.8°F (3.8°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a comfortable 67.8°F (19.9°C) in October to a cool 54.1°F (12.3°C). Weather in November »
Weather in December
December, the first month of the winter in Junction, is also a frosty month, with an average temperature ranging between max 44.6°F (7°C) and min 32.9°F (0.5°C). December's arrival comes with a decrease in the average high-temperature, moving from a cool 54.1°F (12.3°C) in November to a chilly 44.6°F (7°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 time of the year is the coldest in Junction?
The coldest period in Junction tends to be January, when average temperatures fluctuate between a high of 39.7°F (4.3°C) and a low of 26.8°F (-2.9°C).
How much does it rain in Junction?
In Junction, during the entire year, the rain falls for 146.3 days and collects up to 24.96" (634mm) of precipitation.
When does it snow in Junction?
January through April, November and December are months with snowfall.
How much does it snow in Junction?
In Junction, during the entire year, snow falls for 15.9 days and aggregates up to 3.58" (91mm) of snow.
What is the month with the least sunshine in Junction?
With an average of 4.5h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in Junction?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Junction.
When does it snow the most in Junction?
The month with the most snowfall is February, when snow falls for 4.3 days and typically aggregates up to 0.87" (22mm) of snow.
When is Daylight Saving Time (DST) in Junction?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Junction, 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 Junction?
The month with the most rainfall is April, when the rain falls for 14.7 days and typically aggregates up to 3.27" (83mm) of precipitation.
What is the most humid month in Junction?
The most humid month in Junction is May, with an average relative humidity of 80%.
When it does not snow in Junction?
May through October are months without snowfall in Junction, Illinois.
What are the months with the highest UV index in Junction?
The months with the highest UV index in Junction, Illinois, are May through August, with an average maximum UV index of 6.
When are the longest days in Junction?
With an average of 14h and 42min of daylight, June has the longest days of the year.
What is the hottest time of year in Junction?
The warmest month in Junction is July, with an average high-temperature of 86.2°F (30.1°C) and an average low-temperature of 68.4°F (20.2°C).
What month has the most sunshine in Junction?
With an average of 10.6h of sunshine, July has the most sunshine of the year in Junction, Illinois.
What is the driest month in Junction?
The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 1.14" (29mm) of precipitation.
What is the least humid month in Junction?
The least humid month in Junction is October, with an average relative humidity of 70%.
What is the month with the shortest days in Junction?
December has the shortest days of the year in Junction, with an average of 9h and 36min of daylight.
Average temperature
Junction, IL
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Junction, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Junction, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.2mph - Average wind speed in November:
8.8mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Junction, IL
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Junction, IL
- Average rainfall in January:
1.97" - Average rainfall in February:
2.17" - Average rainfall in March:
2.28" - Average rainfall in April:
3.27" - Average rainfall in May:
2.4" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.05" - Average rainfall in August:
1.77" - Average rainfall in September:
1.14" - Average rainfall in October:
1.77" - Average rainfall in November:
1.85" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days
Junction, IL
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
9 days - Average rainfall days in December:
10.4 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9 days).
Average snowfall
Junction, IL
The month with the highest snowfall is February (0.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Junction, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.3 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:
1.1 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Junction, 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 1min - Average daylight in June:
14h and 4min
- 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 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Junction, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
12.1 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (11.2 days).
Average UV index
Junction, 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 and December (UV index 2).
Average cloud cover
Junction, IL
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
Junction, 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).
Junction, 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