Climate and monthly weather forecastPekin, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Pekin, Illinois, with an average temperature varying between 19°F (-7.2°C) and 31.3°F (-0.4°C). January is the coldest month, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 19°F (-7.2°C). Weather in January »Weather in February
February, the last month of the winter in Pekin, is an icy month, with an average temperature fluctuating between 22.6°F (-5.2°C) and 35.6°F (2°C). On the advent of February, Pekin's average high-temperature exhibits a minor adjustment to a cold 35.6°F (2°C) from January's 31.3°F (-0.4°C). Weather in February »Weather in March
March, the first month of the spring in Pekin, is a chilly month, with an average temperature ranging between min 34°F (1.1°C) and max 49.3°F (9.6°C). In Pekin, stepping into March brings a temperature increase, moving up from February's icy 35.6°F (2°C) to a chilly 49.3°F (9.6°C). Weather in March »Weather in April
April is a comfortable spring month in Pekin, Illinois, with an average temperature varying between 61.3°F (16.3°C) and 44.2°F (6.8°C). With the onset of April, the average high-temperature slightly shifts from March's chilly 49.3°F (9.6°C) to an enjoyable 61.3°F (16.3°C). Weather in April »Weather in May
May, the last month of the spring in Pekin, is a pleasant month, with an average temperature fluctuating between 55.2°F (12.9°C) and 72.1°F (22.3°C). The shift from April to May brings an increase in the average high-temperature, moving from a comfortable 61.3°F (16.3°C) to an agreeable 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 Pekin, Illinois, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 80.2°F (26.8°C). The arrival of June brings a soft temperature shift, with the average high-temperature nudging from an agreeable 72.1°F (22.3°C) in May to a warm 80.2°F (26.8°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Pekin, Illinois, with an average temperature ranging between max 82°F (27.8°C) and min 65.3°F (18.5°C). July is the month when Pekin's temperatures reach their peak, with averages of 82°F (27.8°C) and lows of 65.3°F (18.5°C). The heat index value during July is computed to be a hot 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Pekin, Illinois, with an average temperature varying between 81.3°F (27.4°C) and 63.3°F (17.4°C). August records an average high-temperature of a still warm 81.3°F (27.4°C), indicating a minor variation from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Pekin, is also a moderately hot month, with an average temperature ranging between min 57.2°F (14°C) and max 76.3°F (24.6°C). Pekin, Illinois, signifies an average high-temperature of a still warm 76.3°F (24.6°C) in September, closely mirroring the 81.3°F (27.4°C) of August. Weather in September »Weather in October
October, like September, in Pekin, Illinois, is another refreshing autumn month, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 63.1°F (17.3°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from a warm 76.3°F (24.6°C) to a refreshing 63.1°F (17.3°C). Weather in October »Weather in November
November, the last month of the autumn in Pekin, is another chilly month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 48.6°F (9.2°C). The beginning of November marks a clear shift in the average high-temperature, receding from October's enjoyable 63.1°F (17.3°C) to a frosty 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 Pekin, Illinois, with an average temperature fluctuating between 36.9°F (2.7°C) and 26.2°F (-3.2°C). In Pekin, the average high-temperature in December decreases from a frosty 48.6°F (9.2°C) in November to an icy 36.9°F (2.7°C). Weather in December »Updated: Aug 25, 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
Pekin's temperature records reveal January as the coldest month, marked by average highs of 31.3°F (-0.4°C) and lows of 19°F (-7.2°C).
In Pekin, during the entire year, the rain falls for 153.3 days and collects up to 29.61" (752mm) of precipitation.
Months with snowfall are January through April, October through December.
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.
In Pekin, during the entire year, snow falls for 32.9 days and aggregates up to 12.24" (311mm) of snow.
With an average of 4h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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.
In Pekin, snow does not fall in May through September.
The month with the longest days is June, with an average of 15h and 0min of daylight.
The month with the most sunshine is June, with an average of 10.1h of sunshine.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
Pekin's July weather reaches an average high of 82°F (27.8°C) and an average low of 65.3°F (18.5°C), making it the warmest month.
July is the most humid month, with an average relative humidity of 84%.
With an average relative humidity of 71%, October is the least humid month.
The month with the least rainfall is December, when the rain falls for 8.1 days and typically collects 1.54" (39mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
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
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
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
Pekin, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall
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
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
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
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
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
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
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
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
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).
