Climate and monthly weather forecastCoal Valley, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Coal Valley, Illinois, is another subzero cold winter month, with an average temperature varying between 16°F (-8.9°C) and 28.2°F (-2.1°C). Coal Valley's coldest month, January, registers temperatures that range from a high of 28.2°F (-2.1°C) to a low of 16°F (-8.9°C). Weather in January »Weather in February
February, the last month of the winter in Coal Valley, is an icy month, with an average temperature varying between 32.7°F (0.4°C) and 19.8°F (-6.8°C). The initiation of February sees an average high-temperature of an icy 32.7°F (0.4°C), showing minor variations from the previous month. Weather in February »Weather in March
March, the first month of the spring in Coal Valley, is a chilly month, with an average temperature fluctuating between 32°F (0°C) and 46.9°F (8.3°C). With the onset of March, Coal Valley sees a temperature rise, with the average high-temperature moving from February's icy 32.7°F (0.4°C) to a frosty 46.9°F (8.3°C). Weather in March »Weather in April
April in Coal Valley, Illinois, is a mild spring month, with an average temperature fluctuating between 59°F (15°C) and 42.4°F (5.8°C). With the arrival of April, the average high-temperature transitions from a chilly 46.9°F (8.3°C) in March to a refreshing 59°F (15°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Coal Valley, Illinois, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.4°F (11.9°C). The arrival of May brings a change in Coal Valley's weather, with average high-temperatures moving from April's mild 59°F (15°C) to a pleasant 70.3°F (21.3°C). Weather in May »Weather in June
June, the first month of the summer in Coal Valley, is a warm month, with temperature in the range of an average low of 61.9°F (16.6°C) and an average high of 79°F (26.1°C). June brings a slight elevation in the average high-temperature, transitioning from May's agreeable 70.3°F (21.3°C) to a moderately hot 79°F (26.1°C). Weather in June »Weather in July
July, like June, in Coal Valley, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 81.7°F (27.6°C) and 64.9°F (18.3°C). July, on average, is the warmest month, registering a high temperature of 81.7°F (27.6°C) and a low of 64.9°F (18.3°C). In July, the heat index is evaluated at a tropical 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Coal Valley, is also a moderately hot month, with an average temperature fluctuating between 80.8°F (27.1°C) and 63°F (17.2°C). The average high-temperature during August registers at a still moderately hot 80.8°F (27.1°C), maintaining a close resemblance to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Coal Valley, is still a warm month, with an average temperature varying between 56.3°F (13.5°C) and 75.4°F (24.1°C). Coal Valley's progression into September involves a gentle drop in the average high-temperature, from a moderately hot 80.8°F (27.1°C) in August to a still warm 75.4°F (24.1°C). Weather in September »Weather in October
October, like September, in Coal Valley, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 61.3°F (16.3°C) and 45°F (7.2°C). The onset of October coincides with a reduction in the average high-temperature, falling from a warm 75.4°F (24.1°C) in September to a comfortable 61.3°F (16.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Coal Valley, Illinois, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 33.3°F (0.7°C). Onset of November witnesses a reduction in the average high-temperature, falling from an enjoyable 61.3°F (16.3°C) in October to a frosty 47.1°F (8.4°C). Weather in November »Weather in December
December, the first month of the winter in Coal Valley, is still a cold month, with temperature in the range of an average low of 23.9°F (-4.5°C) and an average high of 34.7°F (1.5°C). As December arrives, Coal Valley's weather displays a decrease in high-temperatures, transitioning from November's frosty 47.1°F (8.4°C) to an icy 34.7°F (1.5°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
The lowest temperatures are recorded in January, with averages reaching a high of 28.2°F (-2.1°C) and a low of 16°F (-8.9°C).
The months with the highest humidity are January and July, with an average relative humidity of 83%.
In Coal Valley, during the entire year, the rain falls for 75.2 days and collects up to 5.79" (147mm) of precipitation.
Months with snowfall are January through April, October through December.
January is the month with the most snowfall. Snow falls for 5.5 days and accumulates 1.06" (27mm) of snow.
Throughout the year, in Coal Valley, Illinois, there are 18.4 snowfall days, and 2.64" (67mm) of snow is accumulated.
January has the least sunshine of the year in Coal Valley, with an average of 3.9h of sunshine.
With an average maximum UV index of 1, January is the month with the lowest UV index in Coal Valley, Illinois.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Coal Valley, 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 in Coal Valley, Illinois, is May, when the rain falls for 10.4 days and typically aggregates up to 0.94" (24mm) of precipitation.
May through September are months without snowfall.
The month with the longest days in Coal Valley, Illinois, is June, with an average of 15h and 6min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
Temperature records mark July as the warmest month, with highs averaging 81.7°F (27.6°C) and lows at 64.9°F (18.3°C).
The month with the most sunshine in Coal Valley, Illinois, is July, with an average of 10.2h of sunshine.
The least humid month in Coal Valley, Illinois, is October, with an average relative humidity of 71%.
December is the month with the least rainfall. Rain falls for 3.2 days and accumulates 0.24" (6mm) of precipitation.
The month with the shortest days in Coal Valley is December, with an average of 9h and 12min of daylight.
Average temperature
Coal Valley, IL
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure
Coal Valley, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"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 (29.9"Hg).
Average wind speed
Coal Valley, IL
- Average wind speed in January:
10.3mph - 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:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - 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 (6.7mph).
Average humidity
Coal Valley, IL
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Coal Valley, IL
- Average rainfall in January:
0.35" - Average rainfall in February:
0.28" - Average rainfall in March:
0.35" - Average rainfall in April:
0.59" - Average rainfall in May:
0.94" - Average rainfall in June:
0.71"
- Average rainfall in July:
0.71" - Average rainfall in August:
0.28" - Average rainfall in September:
0.47" - Average rainfall in October:
0.51" - Average rainfall in November:
0.35" - Average rainfall in December:
0.24"
The wettest month (with the highest rainfall) is May (0.94").
The driest month (with the least rainfall) is December (0.24").
Average rainfall days
Coal Valley, IL
- Average rainfall days in January:
1.8 days - Average rainfall days in February:
2.8 days - Average rainfall days in March:
6 days - Average rainfall days in April:
8.8 days - Average rainfall days in May:
10.4 days - Average rainfall days in June:
10.3 days
- Average rainfall days in July:
8.6 days - Average rainfall days in August:
7.6 days - Average rainfall days in September:
6.2 days - Average rainfall days in October:
6 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
3.2 days
The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is January (1.8 days).
Average snowfall
Coal Valley, IL
The month with the highest snowfall is January (1.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Coal Valley, IL
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
2.7 days - Average snowfall days in April:
0.3 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:
1 days - Average snowfall days in December:
3.7 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Coal Valley, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - 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 12min
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 12min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 24min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Coal Valley, IL
- Average sunshine days in January:
25.1 days - Average sunshine days in February:
22.7 days - Average sunshine days in March:
21.8 days - Average sunshine days in April:
19.6 days - Average sunshine days in May:
16 days - Average sunshine days in June:
15.4 days
- Average sunshine days in July:
17.6 days - Average sunshine days in August:
20.3 days - Average sunshine days in September:
21.6 days - Average sunshine days in October:
22.6 days - Average sunshine days in November:
24.4 days - Average sunshine days in December:
25.8 days
The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is June (15.4 days).
Average UV index
Coal Valley, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Coal Valley, IL
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Coal Valley, 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).
