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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, in Castle Junction, Illinois, is a freezing cold winter month, with an average temperature fluctuating between 16.2°F (-8.8°C) and 28.2°F (-2.1°C). January is the coldest month, with the temperature often reaching an average high of 28.2°F (-2.1°C) and an average low of 16.2°F (-8.8°C). Weather in January »
Weather in February
February, the last month of the winter in Castle Junction, is a cold month, with an average temperature fluctuating between 33.1°F (0.6°C) and 20.1°F (-6.6°C). The advent of February observes an average high-temperature of a cold 33.1°F (0.6°C), nearly identical to January's 28.2°F (-2.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Castle Junction, Illinois, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 32.2°F (0.1°C). Observing a rise in March, the average high-temperature goes from February's cold 33.1°F (0.6°C) to a frosty 46.9°F (8.3°C). Weather in March »
Weather in April
April is a moderate spring month in Castle Junction, Illinois, with an average temperature fluctuating between 42.4°F (5.8°C) and 59.2°F (15.1°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a frosty 46.9°F (8.3°C) to a moderate 59.2°F (15.1°C). Weather in April »
Weather in May
May, the last month of the spring in Castle Junction, is a pleasant month, with an average temperature varying between 53.6°F (12°C) and 70.3°F (21.3°C). With the onset of May, the average high-temperature slightly shifts from April's moderate 59.2°F (15.1°C) to an agreeable 70.3°F (21.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Castle Junction, Illinois, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 79°F (26.1°C). Castle Junction's June weather indicates a minor increase in high-temperatures, edging from May's pleasant 70.3°F (21.3°C) to a warm 79°F (26.1°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Castle Junction, Illinois, with an average temperature fluctuating between 81.7°F (27.6°C) and 65.1°F (18.4°C). In Castle Junction, July records the highest average temperatures, peaking at 81.7°F (27.6°C) and reaching a low of 65.1°F (18.4°C). During July, the heat index is calculated to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Castle Junction, Illinois, with an average temperature fluctuating between 63.1°F (17.3°C) and 80.8°F (27.1°C). August brings an average high-temperature of a still moderately hot 80.8°F (27.1°C), showing a slight difference from July's 81.7°F (27.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Castle Junction, Illinois, with an average temperature fluctuating between 75.4°F (24.1°C) and 56.3°F (13.5°C). The move into September indicates a slight reduction in the average high-temperature, down from August's 80.8°F (27.1°C) to a still warm 75.4°F (24.1°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Castle Junction, Illinois, with an average temperature ranging between max 61.5°F (16.4°C) and min 45.1°F (7.3°C). October's arrival comes with a decrease in the average high-temperature, moving from a moderately hot 75.4°F (24.1°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Castle Junction, is also a frosty month, with an average temperature fluctuating between 47.1°F (8.4°C) and 33.3°F (0.7°C). November weather is marked by a drop in the average high-temperature, falling from a refreshing 61.5°F (16.4°C) in October to a frosty 47.1°F (8.4°C). Weather in November »
Weather in December
December, the first month of the winter in Castle Junction, is also a wintry month, with an average temperature ranging between max 34.5°F (1.4°C) and min 24.1°F (-4.4°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a chilly 47.1°F (8.4°C) in November to an icy 34.5°F (1.4°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Castle Junction?
January, with its average high-temperature of 28.2°F (-2.1°C) and an average low-temperature of 16.2°F (-8.8°C), holds the record as the coldest month in Castle Junction, Illinois.
What are the most humid months in Castle Junction?
January and July, with an average relative humidity of 83%, are most humid months.
How much does it rain in Castle Junction?
In Castle Junction, during the entire year, the rain falls for 128 days and collects up to 19.29" (490mm) of precipitation.
When does it snow in Castle Junction?
Months with snowfall are January through April, October through December.
How many days does it snow in Castle Junction?
Throughout the year, in Castle Junction, there are 35.4 snowfall days, and 8.35" (212mm) of snow is accumulated.
What is the month with the least sunshine in Castle Junction?
The month with the least sunshine in Castle Junction, Illinois, is January, with an average of 4h of sunshine.
What is the month with the lowest UV index in Castle Junction?
With an average maximum UV index of 1, January is the month with the lowest UV index in Castle Junction.
When does it snow the most in Castle Junction?
The month with the most snowfall is February, when snow falls for 8.8 days and typically aggregates up to 2.52" (64mm) of snow.
When is Daylight Saving Time (DST) in Castle Junction?
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 wettest month in Castle Junction?
The month with the most rainfall is May, when the rain falls for 16.5 days and typically aggregates up to 3.31" (84mm) of precipitation.
When it does not snow in Castle Junction?
May through September are months without snowfall.
When are the longest days in Castle Junction?
With an average of 15h and 6min of daylight, June has the longest days of the year in Castle Junction.
What is the month with the highest UV index in Castle Junction?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months in Castle Junction?
The warmest temperatures in Castle Junction occur during July, when averages reach a peak of 81.7°F (27.6°C) and a low of 65.1°F (18.4°C).
What month has the most sunshine in Castle Junction?
With an average of 10.3h of sunshine, July has the most sunshine of the year in Castle Junction.
What is the least humid month in Castle Junction?
With an average relative humidity of 71%, October is the least humid month.
What is the driest month in Castle Junction?
December is the month with the least rainfall. Rain falls for 6.6 days and accumulates 0.75" (19mm) of precipitation.
What is the month with the shortest days in Castle Junction?
The month with the shortest days in Castle Junction, Illinois, is December, with an average of 9h and 12min of daylight.
Average temperature
Castle Junction, IL
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Castle Junction, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Castle Junction, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity
Castle Junction, IL
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Castle Junction, IL
- Average rainfall in January:
0.79" - Average rainfall in February:
0.79" - Average rainfall in March:
1.1" - Average rainfall in April:
2.01" - Average rainfall in May:
3.31" - Average rainfall in June:
2.8"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days
Castle Junction, IL
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
6.6 days
The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).
Average snowfall
Castle Junction, IL
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Castle Junction, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
1.4 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:
0.7 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
7.8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Castle Junction, IL
- Average daylight in January:
9h and 4min - 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 3min - 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 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Castle Junction, IL
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Castle Junction, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Castle Junction, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Castle 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).
Castle Junction, Illinois, USA
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