Climate and monthly weather forecastSouth Pekin, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in South Pekin, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 19°F (-7.2°C) and 31.3°F (-0.4°C). South Pekin experiences its lowest average temperatures in January, reaching a peak of 31.3°F (-0.4°C) and a minimum of 19°F (-7.2°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in South Pekin, Illinois, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 22.6°F (-5.2°C). South Pekin transitions into February recording an average high-temperature of an icy 35.6°F (2°C), closely aligning with the preceding month's temperature. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in South Pekin, Illinois, with temperature in the range of an average high of 49.3°F (9.6°C) and an average low of 34°F (1.1°C). March's arrival brings a temperature shift, moving from a wintry 35.6°F (2°C) in February to a chilly 49.3°F (9.6°C). Weather in March »Weather in April
April in South Pekin, Illinois, is an enjoyable spring month, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 61.3°F (16.3°C). The transition to April introduces an increase in the average high-temperature, shifting from a frosty 49.3°F (9.6°C) in March to a comfortable 61.3°F (16.3°C). Weather in April »Weather in May
May, the last month of the spring in South Pekin, is a pleasant month, with an average temperature varying between 55.2°F (12.9°C) and 72.1°F (22.3°C). In South Pekin, the average high-temperature in May increases from a comfortable 61.3°F (16.3°C) in April to a pleasant 72.1°F (22.3°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in South Pekin, Illinois, with an average temperature ranging between max 80.2°F (26.8°C) and min 63.7°F (17.6°C). South Pekin in June observes a minor temperature shift, with average high-temperatures adjusting from a pleasant 72.1°F (22.3°C) in May to a moderately hot 80.2°F (26.8°C). Weather in June »Weather in July
July, like June, in South Pekin, Illinois, is a moderately hot summer month, with an average temperature ranging between min 65.3°F (18.5°C) and max 82°F (27.8°C). During the warmest month, July, temperatures average a high of 82°F (27.8°C) and a low of 65.3°F (18.5°C). In July, the heat index is calculated to be a hot 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in South Pekin, Illinois, with an average temperature fluctuating between 63.3°F (17.4°C) and 81.3°F (27.4°C). As July transitions into August, South Pekin records an average high-temperature of a still moderately hot 81.3°F (27.4°C), showing a gentle shift from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in South Pekin, is also a moderately hot month, with an average temperature varying between 76.3°F (24.6°C) and 57.2°F (14°C). With the advent of September, South Pekin's high-temperatures adjust to a still warm 76.3°F (24.6°C), closely aligning with the preceding month. Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in South Pekin, Illinois, with an average temperature varying between 63.1°F (17.3°C) and 46.8°F (8.2°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a moderately hot 76.3°F (24.6°C) in September to an enjoyable 63.1°F (17.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in South Pekin, Illinois, with an average temperature ranging between max 48.6°F (9.2°C) and min 35.2°F (1.8°C). A shift in South Pekin's weather is noticeable as October turns into November, with the average high temperature decreasing from a refreshing 63.1°F (17.3°C) to a chilly 48.6°F (9.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in South Pekin, Illinois, with temperature in the range of an average low of 26.2°F (-3.2°C) and an average high of 36.9°F (2.7°C). The start of December involves a temperature drop, moving from a chilly 48.6°F (9.2°C) in November to a wintry 36.9°F (2.7°C). Weather in December »Updated: Aug 2, 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
January proves to be the coldest month, recording an average maximum temperature of 31.3°F (-0.4°C) and a minimum temperature of 19°F (-7.2°C).
In South Pekin, Illinois, during the entire year, the rain falls for 153.3 days and collects up to 29.61" (752mm) of precipitation.
January through April, October through December are months with snowfall.
The month with the most snowfall is January, when snow falls for 10.6 days and typically aggregates up to 3.86" (98mm) of snow.
Throughout the year, there are 32.9 snowfall days, and 12.24" (311mm) of snow is accumulated.
January has the least sunshine of the year, with an average of 4h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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.
The month with the most rainfall is May, when the rain falls for 18.5 days and typically aggregates up to 4.09" (104mm) of precipitation.
May through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 0min of daylight.
June has the most sunshine of the year, with an average of 10.1h of sunshine.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
South Pekin's July weather, marked by an average high temperature of 82°F (27.8°C) and an average low temperature of 65.3°F (18.5°C), is the warmest in the year.
The most humid month is July, with an average relative humidity of 84%.
October is the least humid month, with an average relative humidity of 71%.
The month with the least rainfall is December, when the rain falls for 8.1 days and typically collects 1.54" (39mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
South Pekin, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure
South Pekin, 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:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
South Pekin, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
South Pekin, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
South Pekin, IL
- Average rainfall in January:
1.65" - Average rainfall in February:
1.61" - Average rainfall in March:
2.24" - Average rainfall in April:
3.46" - Average rainfall in May:
4.09" - Average rainfall in June:
3.27"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.17" - Average rainfall in September:
2.48" - Average rainfall in October:
2.76" - Average rainfall in November:
1.81" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days
South Pekin, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
16.2 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall
South Pekin, IL
The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
South Pekin, IL
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
8.6 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
1.2 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:
0.2 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
6.4 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
South Pekin, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
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
South Pekin, IL
- Average sunshine days in January:
15.2 days - Average sunshine days in February:
13.7 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
14.2 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (10 days).
Average UV index
South Pekin, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
South Pekin, IL
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
South Pekin, 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).
