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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 an icy winter month in Spillertown, Illinois, with an average temperature ranging between min 26.1°F (-3.3°C) and max 39.6°F (4.2°C). January is the month when Spillertown sees the lowest average temperatures, with a high of 39.6°F (4.2°C) and a low of 26.1°F (-3.3°C). Weather in January »
Weather in February
February, the last month of the winter in Spillertown, is a chilly month, with an average temperature fluctuating between 43.7°F (6.5°C) and 29.8°F (-1.2°C). Spillertown experiences an average high-temperature of a chilly 43.7°F (6.5°C) with the onset of February, subtly varied from January's 39.6°F (4.2°C). Weather in February »
Weather in March
March, the first month of the spring in Spillertown, is a cool month, with an average temperature varying between 55.2°F (12.9°C) and 38.8°F (3.8°C). A rise in the average high-temperature is observed during March, moving from a frosty 43.7°F (6.5°C) in February to a fresh 55.2°F (12.9°C). Weather in March »
Weather in April
April is a comfortable spring month in Spillertown, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 48.7°F (9.3°C). The start of April is characterized by an increase in the average high-temperature, transitioning from a cool 55.2°F (12.9°C) in March to a comfortable 66.4°F (19.1°C). Weather in April »
Weather in May
May, the last month of the spring in Spillertown, is a warm month, with an average temperature ranging between min 58.1°F (14.5°C) and max 75.4°F (24.1°C). May's onset is marked by a temperature increase, moving from an enjoyable 66.4°F (19.1°C) in April to a moderately hot 75.4°F (24.1°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Spillertown, Illinois, with an average temperature fluctuating between 84.7°F (29.3°C) and 66.4°F (19.1°C). As May transitions into June, Spillertown sees a rise in the average high-temperature, moving from a warm 75.4°F (24.1°C) to a still moderately hot 84.7°F (29.3°C). Weather in June »
Weather in July
July in Spillertown, Illinois, is a hot summer month, with an average temperature varying between 68.5°F (20.3°C) and 87.4°F (30.8°C). In Spillertown, July records the highest average temperatures, peaking at 87.4°F (30.8°C) and reaching a low of 68.5°F (20.3°C). During July, the heat index is computed to be a sweltering 102.2°F (39°C). Weather in July »
Weather in August
August, the last month of the summer in Spillertown, is also a moderately hot month, with an average temperature varying between 66.4°F (19.1°C) and 85.6°F (29.8°C). The commencement of August records an average high-temperature of a warm 85.6°F (29.8°C), barely varying from July's 87.4°F (30.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Spillertown, Illinois, with an average temperature varying between 60.4°F (15.8°C) and 80.8°F (27.1°C). Spillertown's shift from August to September is accompanied by an average high-temperature of a still moderately hot 80.8°F (27.1°C), a slight deviation from 85.6°F (29.8°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Spillertown, Illinois, with an average temperature ranging between max 67.3°F (19.6°C) and min 49.3°F (9.6°C). The average high-temperature drops in October, from September's warm 80.8°F (27.1°C) to an enjoyable 67.3°F (19.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Spillertown, Illinois, with an average temperature fluctuating between 38.5°F (3.6°C) and 53.8°F (12.1°C). A moderate decline in the average high-temperature is seen during November, decreasing from a comfortable 67.3°F (19.6°C) in October to a cool 53.8°F (12.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Spillertown, Illinois, with temperature in the range of an average high of 43.9°F (6.6°C) and an average low of 31.8°F (-0.1°C). The transition into December indicates a reduction in the average high-temperature, down to a frosty 43.9°F (6.6°C) from November's fresh 53.8°F (12.1°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 are the coldest months in Spillertown?
Spillertown's coldest weather arrives in January, when temperatures average a high of 39.6°F (4.2°C) and a low of 26.1°F (-3.3°C).
How much does it rain in Spillertown?
In Spillertown, during the entire year, the rain falls for 137.6 days and collects up to 23.03" (585mm) of precipitation.
When does it snow in Spillertown?
January through April, October through December are months with snowfall in Spillertown.
What is the snowiest month in Spillertown?
The months with the most snowfall in Spillertown, Illinois, are January and February, with an average 0.94" (24mm) of accumulated snow.
How many days does it snow in Spillertown?
In Spillertown, Illinois, during the entire year, snow falls for 14.5 days and aggregates up to 4.13" (105mm) of snow.
What is the month with the least sunshine in Spillertown?
The month with the least sunshine in Spillertown is January, with an average of 4.6h of sunshine.
What are the months with the lowest UV index in Spillertown?
The months with the lowest UV index in Spillertown, Illinois, are January, February and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Spillertown?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Spillertown, 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 Spillertown?
The month with the most rainfall in Spillertown, Illinois, is April, when the rain falls for 13.8 days and typically aggregates up to 3.11" (79mm) of precipitation.
What is the most humid month in Spillertown?
With an average relative humidity of 79%, May is the most humid month.
When it does not snow in Spillertown?
May through September are months without snowfall.
When is the highest UV index in Spillertown?
The months with the highest UV index in Spillertown, Illinois, are May through August, with an average maximum UV index of 6.
When are the longest days in Spillertown?
With an average of 14h and 42min of daylight, June has the longest days of the year.
What are the months with the most sunshine in Spillertown?
June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Spillertown.
What time of the year is the hottest in Spillertown?
July, recording an average high temperature of 87.4°F (30.8°C) and a low temperature of 68.5°F (20.3°C), is Spillertown's warmest month.
What is the driest month in Spillertown?
September is the month with the least rainfall in Spillertown, Illinois. Rain falls for 10.5 days and accumulates 1.1" (28mm) of precipitation.
What is the least humid month in Spillertown?
The least humid month in Spillertown is October, with an average relative humidity of 71%.
What is the month with the shortest days in Spillertown?
With an average of 9h and 36min of daylight, December has the shortest days of the year in Spillertown.
Average temperature
Spillertown, IL
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Spillertown, 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:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"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:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Spillertown, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.6mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.8mph
The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Spillertown, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Spillertown, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.65" - Average rainfall in March:
2.09" - Average rainfall in April:
3.11" - Average rainfall in May:
2.52" - Average rainfall in June:
2.13"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.89" - Average rainfall in September:
1.1" - Average rainfall in October:
1.89" - Average rainfall in November:
1.69" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days
Spillertown, IL
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).
Average snowfall
Spillertown, IL
The months with the highest snowfall are January and February (0.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Spillertown, IL
- Average snowfall days in January:
4.1 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.5 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:
0.2 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
2.7 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Spillertown, 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 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
Spillertown, IL
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
13.3 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).
Average UV index
Spillertown, 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
Spillertown, IL
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility
Spillertown, 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).
Spillertown, Illinois, USA
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