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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, the same as December, is an icy winter month in West Union, Illinois, with an average temperature ranging between max 34.5°F (1.4°C) and min 22.3°F (-5.4°C). West Union witnesses the coldest weather in January, with temperatures averaging a high of 34.5°F (1.4°C) and a low of 22.3°F (-5.4°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in West Union, Illinois, with an average temperature ranging between min 26.2°F (-3.2°C) and max 39.2°F (4°C). The transition from January to February sees an average high-temperature of a still icy 39.2°F (4°C), indicating a minor variance from the prior month. Weather in February »
Weather in March
March, the first month of the spring in West Union, is a fresh month, with an average temperature ranging between min 36.3°F (2.4°C) and max 51.4°F (10.8°C). March's onset brings a temperature rise, moving from a cold 39.2°F (4°C) in February to a fresh 51.4°F (10.8°C). Weather in March »
Weather in April
April in West Union, Illinois, is a comfortable spring month, with an average temperature varying between 62.4°F (16.9°C) and 46°F (7.8°C). West Union sees an increase in average high-temperatures during April, moving from a cool 51.4°F (10.8°C) in March to a refreshing 62.4°F (16.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in West Union, Illinois, with an average temperature fluctuating between 73°F (22.8°C) and 56.5°F (13.6°C). The start of May signals an increase in the average high-temperature, moving from a refreshing 62.4°F (16.9°C) in April to a pleasant 73°F (22.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in West Union, Illinois, with an average temperature fluctuating between 64°F (17.8°C) and 81.1°F (27.3°C). The shift from May to June is marked by a slight increase in the average high-temperature, moving from a pleasant 73°F (22.8°C) to a warm 81.1°F (27.3°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in West Union, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 82.8°F (28.2°C). In West Union, the average temperatures in July are the highest, with a peak at 82.8°F (28.2°C) and a low of 65.8°F (18.8°C). The heat index for July is estimated at a hot 91.4°F (33°C). Weather in July »
Weather in August
August, the last month of the summer in West Union, is another warm month, with an average temperature ranging between max 81.7°F (27.6°C) and min 64°F (17.8°C). The arrival of August marks a slight shift to an average high-temperature of a still warm 81.7°F (27.6°C) from July's 82.8°F (28.2°C). Weather in August »
Weather in September
September, the first month of the autumn in West Union, is also a moderately hot month, with an average temperature varying between 77.4°F (25.2°C) and 58.8°F (14.9°C). As August transitions into September, the average high-temperature rests at a still warm 77.4°F (25.2°C), maintaining a close resemblance to the previous month. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in West Union, Illinois, with an average temperature varying between 64.4°F (18°C) and 48°F (8.9°C). October brings a drop in West Union's average high-temperature, falling from a moderately hot 77.4°F (25.2°C) in September to a comfortable 64.4°F (18°C). Weather in October »
Weather in November
November, the last month of the autumn in West Union, is also a fresh month, with an average temperature ranging between max 50.4°F (10.2°C) and min 36.3°F (2.4°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a refreshing 64.4°F (18°C) in October to a fresh 50.4°F (10.2°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in West Union, Illinois, with temperature in the range of an average high of 39.6°F (4.2°C) and an average low of 28.8°F (-1.8°C). December brings a decrease in the average high-temperature, falling from November's cool 50.4°F (10.2°C) to a cold 39.6°F (4.2°C). Weather in December »
Updated: Jul 27, 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 month is the coldest?
The coldest time of the year in West Union is January, with temperatures averaging a high of 34.5°F (1.4°C) and a low of 22.3°F (-5.4°C).
How much does it rain?
Throughout the year, there are 145.2 rainfall days, and 24.76" (629mm) of precipitation is accumulated.
When does it snow?
January through April, November and December are months with snowfall.
How much does it snow?
Throughout the year, there are 22.1 snowfall days, and 7.4" (188mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 4.1h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 7.9 days and typically collects 1.26" (32mm) of precipitation.
When is Daylight Saving Time (DST) in West Union?
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?
The month with the most rainfall in West Union is April, when the rain falls for 14.1 days and typically aggregates up to 3.54" (90mm) of precipitation.
When it does not snow?
May through October are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What month has the most sunshine in West Union?
With an average of 10.4h of sunshine, June has the most sunshine of the year.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
With average high temperatures of 82.8°F (28.2°C) and lows of 65.8°F (18.8°C), July is the warmest month.
What is the most humid month?
With an average relative humidity of 83%, July is the most humid month.
What is the least humid month in West Union?
The least humid month is October, with an average relative humidity of 71%.
When does it snow the most?
December is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.13" (54mm) of snow.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
West Union, IL
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.5°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
West Union, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
West Union, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity
West Union, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
West Union, IL
- Average rainfall in January:
1.69" - Average rainfall in February:
1.26" - Average rainfall in March:
1.89" - Average rainfall in April:
3.54" - Average rainfall in May:
2.87" - Average rainfall in June:
2.8"
- Average rainfall in July:
2.28" - Average rainfall in August:
1.97" - Average rainfall in September:
1.34" - Average rainfall in October:
1.93" - Average rainfall in November:
1.5" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days
West Union, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
13 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
8 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
West Union, IL
The month with the highest snowfall is December (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
West Union, IL
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
5.7 days - Average snowfall days in March:
2.8 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 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
West Union, 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 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - 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 0min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
West Union, IL
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index
West Union, IL
The months with the highest UV index are 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
West Union, IL
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility
West Union, IL
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).