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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 Westville, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 31.6°F (-0.2°C) and an average low of 20.5°F (-6.4°C). With an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 20.5°F (-6.4°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Westville, Illinois, with temperature in the range of an average high of 37°F (2.8°C) and an average low of 23.9°F (-4.5°C). In Westville, the onset of February comes with a modest high-temperature shift, transitioning from January's subzero cold 31.6°F (-0.2°C) to a cold 37°F (2.8°C). Weather in February »
Weather in March
March, the first month of the spring in Westville, is a chilly month, with an average temperature varying between 49.1°F (9.5°C) and 34.9°F (1.6°C). Westville's transition into March sees a rise in the average high-temperature, advancing from a cold 37°F (2.8°C) in February to a frosty 49.1°F (9.5°C). Weather in March »
Weather in April
April in Westville, Illinois, is an enjoyable spring month, with an average temperature ranging between max 61.2°F (16.2°C) and min 45°F (7.2°C). April brings a temperature change, with average high-temperatures moving from March's frosty 49.1°F (9.5°C) to an enjoyable 61.2°F (16.2°C). Weather in April »
Weather in May
May, the last month of the spring in Westville, is a pleasant month, with temperature in the range of an average high of 71.8°F (22.1°C) and an average low of 55°F (12.8°C). As May sets, the average high-temperature shows an increase, moving up from an enjoyable 61.2°F (16.2°C) in April to an agreeable 71.8°F (22.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Westville, Illinois, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 79.9°F (26.6°C). A minor escalation in the average high-temperature is seen with the onset of June, moving from an agreeable 71.8°F (22.1°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Westville, Illinois, is a moderately hot summer month, with an average temperature varying between 64.9°F (18.3°C) and 81.3°F (27.4°C). The warmest period is July, when temperatures fluctuate between an average high of 81.3°F (27.4°C) and a low of 64.9°F (18.3°C). July's heat index is computed to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Westville, is another warm month, with an average temperature ranging between max 80.6°F (27°C) and min 63.3°F (17.4°C). With the onset of August, Westville's average high-temperature clocks in at a still moderately hot 80.6°F (27°C), showing a minor fluctuation from the previous month. Weather in August »
Weather in September
September, the first month of the autumn in Westville, is also a moderately hot month, with an average temperature varying between 76.1°F (24.5°C) and 57.7°F (14.3°C). Entering September, Westville's average high-temperature reads a still moderately hot 76.1°F (24.5°C), indicating a close resemblance to the previous month's climate. Weather in September »
Weather in October
October, like September, in Westville, Illinois, is another enjoyable autumn month, with an average temperature fluctuating between 47.1°F (8.4°C) and 63.1°F (17.3°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a moderately hot 76.1°F (24.5°C) to a comfortable 63.1°F (17.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Westville, is also a frosty month, with an average temperature ranging between min 35.6°F (2°C) and max 48.9°F (9.4°C). The average high-temperature drops in November, from October's refreshing 63.1°F (17.3°C) to a frosty 48.9°F (9.4°C). Weather in November »
Weather in December
December, the first month of the winter in Westville, is still a cold month, with an average temperature varying between 27.5°F (-2.5°C) and 37.6°F (3.1°C). December comes with a decrease in the average high-temperature, falling from a frosty 48.9°F (9.4°C) in November to a wintry 37.6°F (3.1°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 Westville?
In Westville, the lowest temperatures are generally noted in January, averaging a high of 31.6°F (-0.2°C) and a low of 20.5°F (-6.4°C).
How much does it rain in Westville?
In Westville, during the entire year, the rain falls for 151.8 days and collects up to 25.63" (651mm) of precipitation.
When does it snow in Westville?
Months with snowfall are January through April, November and December.
How much does it snow in Westville?
In Westville, during the entire year, snow falls for 35.2 days and aggregates up to 8.82" (224mm) of snow.
What is the month with the least sunshine in Westville?
January has the least sunshine of the year, with an average of 4h of sunshine.
When is the lowest UV index in Westville?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Westville.
What is the driest month in Westville?
The months with the least rainfall are February and September Rain falls for 6.6 days and accumulates 1.38" (35mm) of rain.
What is the snowiest month in Westville?
The month with the most snowfall is February, when snow falls for 8.9 days and typically aggregates up to 2.64" (67mm) of snow.
When is Daylight Saving Time (DST) in Westville?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Westville, 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 Westville?
April is the month with the most rainfall in Westville. Rain falls for 15.3 days and accumulates 3.23" (82mm) of precipitation.
When it does not snow in Westville?
May through October are months without snowfall in Westville, Illinois.
When are the longest days in Westville?
The month with the longest days in Westville, Illinois, is June, with an average of 15h and 0min of daylight.
What month has the most sunshine in Westville?
The month with the most sunshine in Westville is June, with an average of 10.1h of sunshine.
What is the month with the highest UV index in Westville?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What are the warmest months in Westville?
July, noted for its average high-temperature of 81.3°F (27.4°C) and an average low-temperature of 64.9°F (18.3°C), is considered the warmest month.
What is the most humid month in Westville?
The most humid month is July, with an average relative humidity of 84%.
What is the least humid month in Westville?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days in Westville?
The month with the shortest days in Westville, Illinois, is December, with an average of 9h and 24min of daylight.
Average temperature
Westville, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Westville, IL
- Average pressure in January:
30.14"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:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Westville, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Westville, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Westville, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.38" - Average rainfall in March:
2.32" - Average rainfall in April:
3.23" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.24" - Average rainfall in September:
1.38" - Average rainfall in October:
2.05" - Average rainfall in November:
1.46" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days
Westville, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.4 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall
Westville, IL
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Westville, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.9 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.9 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:
2.5 days - Average snowfall days in December:
7.9 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Westville, 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 2min - Average daylight in June:
15h and 0min
- 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 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 2min - 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Westville, IL
- Average sunshine days in January:
15 days - Average sunshine days in February:
13.1 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
10 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.5 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index
Westville, 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
Westville, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility
Westville, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Westville, Illinois, USA
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