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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 Percy, Illinois, with an average temperature varying between 25.7°F (-3.5°C) and 39°F (3.9°C). In Percy, January is the coldest month, with temperatures averaging a high of 39°F (3.9°C) and a low of 25.7°F (-3.5°C). Weather in January »
Weather in February
The last month of the winter, February, is a chilly month in Percy, Illinois, with an average temperature varying between 29.1°F (-1.6°C) and 43.9°F (6.6°C). The arrival of February marks a slight shift to an average high-temperature of a chilly 43.9°F (6.6°C) from January's 39°F (3.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Percy, Illinois, with an average temperature fluctuating between 38.8°F (3.8°C) and 55°F (12.8°C). The shift into March is characterized by a rise in the average high-temperature, transitioning from February's frosty 43.9°F (6.6°C) to a cool 55°F (12.8°C). Weather in March »
Weather in April
April is a comfortable spring month in Percy, Illinois, with an average temperature ranging between min 48.4°F (9.1°C) and max 66°F (18.9°C). An increase in the average high-temperature marks April, moving from March's cool 55°F (12.8°C) to a comfortable 66°F (18.9°C). Weather in April »
Weather in May
May, the last month of the spring in Percy, is a moderately hot month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 75.7°F (24.3°C). As April gives way to May, the average high-temperature displays an increase, moving from a comfortable 66°F (18.9°C) to a warm 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Percy, Illinois, with an average temperature ranging between min 66.6°F (19.2°C) and max 84.7°F (29.3°C). The average high-temperature increases in June, moving from 75.7°F (24.3°C) in May to a still warm 84.7°F (29.3°C). Weather in June »
Weather in July
July is a tropical summer month in Percy, Illinois, with an average temperature varying between 87.3°F (30.7°C) and 68.5°F (20.3°C). Percy experiences its highest average temperatures in July, reaching a peak of 87.3°F (30.7°C) and a minimum of 68.5°F (20.3°C). In July, the average heat index is evaluated at a torrid 102.2°F (39°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Percy, Illinois, with an average temperature ranging between max 85.6°F (29.8°C) and min 65.8°F (18.8°C). August denotes a minimal variation in the average high-temperature to a warm 85.6°F (29.8°C) from July's 87.3°F (30.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Percy, Illinois, with an average temperature fluctuating between 79.7°F (26.5°C) and 60.1°F (15.6°C). Percy's transition into September involves a gentle shift in temperature, receding from a moderately hot 85.6°F (29.8°C) in August to a still warm 79.7°F (26.5°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Percy, Illinois, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 49.1°F (9.5°C). The onset of October brings a small change in high-temperatures, falling from a warm 79.7°F (26.5°C) in September to a refreshing 67.1°F (19.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Percy, is also a fresh month, with temperature in the range of an average high of 53.8°F (12.1°C) and an average low of 38.3°F (3.5°C). November's onset corresponds with a shift in the average high-temperature, moving from a comfortable 67.1°F (19.5°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 also a frosty month in Percy, Illinois, with an average temperature fluctuating between 43.7°F (6.5°C) and 31.1°F (-0.5°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 53.8°F (12.1°C) in November to a chilly 43.7°F (6.5°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 Percy?
January, with its average high-temperature of 39°F (3.9°C) and an average low-temperature of 25.7°F (-3.5°C), holds the record as the coldest month.
How much does it rain in Percy?
In Percy, during the entire year, the rain falls for 159.4 days and collects up to 37.2" (945mm) of precipitation.
When does it snow in Percy?
Months with snowfall in Percy are January through April, October through December.
When does it snow the most in Percy?
The month with the most snowfall is January, when snow falls for 7.1 days and typically aggregates up to 2.64" (67mm) of snow.
How many days does it snow in Percy?
Throughout the year, there are 20.9 snowfall days, and 8.11" (206mm) of snow is accumulated.
What is the month with the least sunshine in Percy?
January has the least sunshine of the year in Percy, with an average of 4.6h of sunshine.
What is the month with the lowest UV index in Percy?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Percy, Illinois.
What is the driest month in Percy?
The months with the least rainfall in Percy, Illinois, are February and September Rain falls for 9.6 days and accumulates 2.13" (54mm) of rain.
When is Daylight Saving Time (DST) in Percy?
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 most humid month in Percy?
The most humid month in Percy, Illinois, is May, with an average relative humidity of 79%.
What is the rainiest month in Percy?
The month with the most rainfall in Percy, Illinois, is May, when the rain falls for 18.3 days and typically aggregates up to 4.49" (114mm) of precipitation.
When it does not snow in Percy?
In Percy, snow does not fall in May through September.
When are the longest days in Percy?
With an average of 14h and 48min of daylight, June has the longest days of the year in Percy.
What month has the most sunshine in Percy?
The month with the most sunshine in Percy, Illinois, is June, with an average of 10.5h of sunshine.
When is the highest UV index in Percy?
The months with the highest UV index in Percy are June through August, with an average maximum UV index of 6.
What part of the year is the hottest in Percy?
The average temperatures in Percy, Illinois, reach their apex in July, averaging 87.3°F (30.7°C) at the high end and 68.5°F (20.3°C) at the low end.
What is the least humid month in Percy?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days in Percy?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
Average temperature
Percy, IL
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°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 (25.7°F).
Average pressure
Percy, 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:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"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 (29.93"Hg).
Average wind speed
Percy, IL
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.2mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Percy, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Percy, IL
- Average rainfall in January:
2.24" - Average rainfall in February:
2.13" - Average rainfall in March:
3.07" - Average rainfall in April:
4.41" - Average rainfall in May:
4.49" - Average rainfall in June:
4.02"
- Average rainfall in July:
3.39" - Average rainfall in August:
3.31" - Average rainfall in September:
2.13" - Average rainfall in October:
3.03" - Average rainfall in November:
2.44" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is May (4.49").
The driest months (with the least rainfall) are February and September (2.13").
Average rainfall days
Percy, IL
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Percy, IL
The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Percy, IL
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.4 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3.8 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Percy, 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 5min
- 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 48min).
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 3min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
Percy, IL
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Percy, 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 and December (UV index 2).
Average cloud cover
Percy, IL
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility
Percy, 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).
Percy, Illinois, USA
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