Climate and monthly weather forecastAshkum, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Ashkum, Illinois, is a freezing cold winter month, with an average temperature ranging between max 30.2°F (-1°C) and min 18.5°F (-7.5°C). Ashkum notes the coldest temperatures in January, with a high average of 30.2°F (-1°C) and a low of 18.5°F (-7.5°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Ashkum, Illinois, with an average temperature ranging between max 34.7°F (1.5°C) and min 21.6°F (-5.8°C). February's arrival brings an average high-temperature of a wintry 34.7°F (1.5°C), slightly deviating from January's 30.2°F (-1°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Ashkum, Illinois, with an average temperature ranging between min 33.4°F (0.8°C) and max 47.5°F (8.6°C). Ashkum sees an increase in the average high-temperature with the arrival of March, moving from February's wintry 34.7°F (1.5°C) to a frosty 47.5°F (8.6°C). Weather in March »Weather in April
April is a refreshing spring month in Ashkum, Illinois, with an average temperature varying between 59.5°F (15.3°C) and 43.5°F (6.4°C). April comes with an increase, with the average high-temperature moving from a chilly 47.5°F (8.6°C) in March to a mild 59.5°F (15.3°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Ashkum, Illinois, with an average temperature ranging between min 54.5°F (12.5°C) and max 71.2°F (21.8°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 59.5°F (15.3°C) to a pleasant 71.2°F (21.8°C). Weather in May »Weather in June
June, the first month of the summer in Ashkum, is a warm month, with temperature in the range of an average low of 62.6°F (17°C) and an average high of 79.3°F (26.3°C). The shift into June brings a slight increase in the average high-temperature, moving from an agreeable 71.2°F (21.8°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »Weather in July
July, like June, in Ashkum, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 64.4°F (18°C) and 81.1°F (27.3°C). Ashkum's warmest month, July, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 64.4°F (18°C). For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Ashkum, Illinois, with an average temperature fluctuating between 79.5°F (26.4°C) and 62.4°F (16.9°C). The introduction of August sees an average high-temperature of a still warm 79.5°F (26.4°C), hardly deviating from July. Weather in August »Weather in September
September, the first month of the autumn in Ashkum, is also a moderately hot month, with an average temperature fluctuating between 57.2°F (14°C) and 75.2°F (24°C). The beginning of September reveals an average high-temperature of a still warm 75.2°F (24°C), showing minimal deviation from the previous month. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Ashkum, Illinois, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 62.1°F (16.7°C). October shows a mild decline in the average high-temperature, falling from September's moderately hot 75.2°F (24°C) to a comfortable 62.1°F (16.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Ashkum, Illinois, with an average temperature fluctuating between 47.7°F (8.7°C) and 34.9°F (1.6°C). Ashkum's transition into November marks a considerable drop in the average high-temperature, moving down from an enjoyable 62.1°F (16.7°C) in October to a frosty 47.7°F (8.7°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Ashkum, Illinois, with an average temperature ranging between min 26.1°F (-3.3°C) and max 36.5°F (2.5°C). Ashkum observes a minor decrease in the average high-temperature with the arrival of December, falling from November's frosty 47.7°F (8.7°C) to a cold 36.5°F (2.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Ashkum, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.2°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Ashkum, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"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:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Ashkum, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Ashkum, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Ashkum, IL
- Average rainfall in January:
1.06" - Average rainfall in February:
1.06" - Average rainfall in March:
1.61" - Average rainfall in April:
2.4" - Average rainfall in May:
3.19" - Average rainfall in June:
2.48"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.13" - Average rainfall in September:
1.38" - Average rainfall in October:
1.81" - Average rainfall in November:
1.22" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January, February and December (1.06").
Average rainfall days
Ashkum, IL
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
17.2 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall
Ashkum, IL
The month with the highest snowfall is February (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Ashkum, IL
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
8 days - Average snowfall days in March:
4.6 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7.7 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Ashkum, IL
- Average daylight in January:
9h and 36min - 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 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - 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 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Ashkum, IL
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
15.1 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
10 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10 days).
Average UV index
Ashkum, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Ashkum, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility
Ashkum, 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).





