Climate and monthly weather forecastPierron, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Pierron, Illinois, is an icy winter month, with an average temperature ranging between max 36.9°F (2.7°C) and min 23.7°F (-4.6°C). Pierron's January weather, with an average high temperature of 36.9°F (2.7°C) and an average low temperature of 23.7°F (-4.6°C), tends to be the coldest of the year. Weather in January »Weather in February
February, the last month of the winter in Pierron, is also an icy month, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 27.3°F (-2.6°C). With the onset of February, a modest change to a still cold 41.5°F (5.3°C) from January's 36.9°F (2.7°C) is noted in high-temperature. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Pierron, Illinois, with an average temperature varying between 53.4°F (11.9°C) and 37.2°F (2.9°C). In Pierron, the average high-temperature in March increases from an icy 41.5°F (5.3°C) in February to a cool 53.4°F (11.9°C). Weather in March »Weather in April
April is an enjoyable spring month in Pierron, Illinois, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 64.2°F (17.9°C). April brings a temperature change, with average high-temperatures moving from March's fresh 53.4°F (11.9°C) to an enjoyable 64.2°F (17.9°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Pierron, Illinois, with an average temperature fluctuating between 57.4°F (14.1°C) and 74.3°F (23.5°C). May marks a rise in the average high-temperature, moving from April's enjoyable 64.2°F (17.9°C) to a warm 74.3°F (23.5°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Pierron, Illinois, with an average temperature ranging between max 83.1°F (28.4°C) and min 66.2°F (19°C). As Pierron transitions into June, the average high-temperature is observed to slightly rise from 74.3°F (23.5°C) in May to a still warm 83.1°F (28.4°C). Weather in June »Weather in July
July, like June, in Pierron, Illinois, is another warm summer month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 84.9°F (29.4°C). In Pierron, the month of July registers the highest temperatures, averaging 84.9°F (29.4°C) at the peak and 67.6°F (19.8°C) at the lowest. July's heat index is appraised at a sweltering 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Pierron, Illinois, with an average temperature fluctuating between 83.7°F (28.7°C) and 65.8°F (18.8°C). Pierron notes an average high-temperature of a still warm 83.7°F (28.7°C) in August, hardly diverging from July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Pierron, Illinois, with temperature in the range of an average low of 59.7°F (15.4°C) and an average high of 78.1°F (25.6°C). September is characterized by a slight reduction in average high-temperature, easing from a warm 83.7°F (28.7°C) in August to a still moderately hot 78.1°F (25.6°C). Weather in September »Weather in October
October, like September, in Pierron, Illinois, is another comfortable autumn month, with an average temperature ranging between min 48.9°F (9.4°C) and max 65.7°F (18.7°C). October's arrival coincides with a drop in the average high-temperature, decreasing from September's moderately hot 78.1°F (25.6°C) to an enjoyable 65.7°F (18.7°C). Weather in October »Weather in November
November, the last month of the autumn in Pierron, is also a fresh month, with an average temperature ranging between min 37.4°F (3°C) and max 52.3°F (11.3°C). Pierron's weather changes with the onset of November, slightly falling from a comfortable 65.7°F (18.7°C) in October to a fresh 52.3°F (11.3°C). Weather in November »Weather in December
December, the first month of the winter in Pierron, is still a cold month, with an average temperature varying between 30°F (-1.1°C) and 41.5°F (5.3°C). As December begins, there is a decrease in the average high-temperature, falling from a fresh 52.3°F (11.3°C) in November to a wintry 41.5°F (5.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Pierron, IL
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure
Pierron, 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:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Pierron, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.3mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
8.2mph - Average wind speed in November:
8.9mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Pierron, IL
The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Pierron, IL
- Average rainfall in January:
0.91" - Average rainfall in February:
0.55" - Average rainfall in March:
0.91" - Average rainfall in April:
1.3" - Average rainfall in May:
1.46" - Average rainfall in June:
1.3"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.14" - Average rainfall in September:
0.59" - Average rainfall in October:
1.02" - Average rainfall in November:
0.71" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days
Pierron, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
12 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
11.1 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
9.7 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are January and December (5.9 days).
Average snowfall
Pierron, IL
The month with the highest snowfall is December (0.94").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Pierron, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
1.7 days - Average snowfall days in April:
0.2 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:
1.2 days - Average snowfall days in December:
3.1 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Pierron, IL
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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 30min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 24min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Pierron, IL
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
14.5 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
21.5 days - Average sunshine days in November:
20.9 days - Average sunshine days in December:
21.8 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (14.5 days).
Average UV index
Pierron, 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, November and December (UV index 2).
Average cloud cover
Pierron, IL
The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).
Average visibility
Pierron, 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).





