Climate and monthly weather forecastOakley, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Oakley, Illinois, is an icy winter month, with an average temperature varying between 20.8°F (-6.2°C) and 32.5°F (0.3°C). In Oakley, the month of January registers the lowest temperatures, averaging 32.5°F (0.3°C) at the peak and 20.8°F (-6.2°C) at the lowest. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Oakley, Illinois, with temperature in the range of an average low of 24.4°F (-4.2°C) and an average high of 37.6°F (3.1°C). February's onset records an average high-temperature of a still wintry 37.6°F (3.1°C), a near match to January's 32.5°F (0.3°C). Weather in February »Weather in March
The first month of the spring, March, is a cool month in Oakley, Illinois, with an average temperature varying between 35.2°F (1.8°C) and 50°F (10°C). An escalation in the average high-temperature is seen with the onset of March, moving from a wintry 37.6°F (3.1°C) in February to a fresh 50°F (10°C). Weather in March »Weather in April
April in Oakley, Illinois, is a comfortable spring month, with an average temperature varying between 61.5°F (16.4°C) and 46°F (7.8°C). The onset of April brings a rise in the average high-temperature, elevating from a cool 50°F (10°C) in March to an enjoyable 61.5°F (16.4°C). Weather in April »Weather in May
May, the last month of the spring in Oakley, is an agreeable month, with an average temperature fluctuating between 72.9°F (22.7°C) and 56.7°F (13.7°C). Oakley sees an increase in the average high-temperature with the arrival of May, moving from April's refreshing 61.5°F (16.4°C) to an agreeable 72.9°F (22.7°C). Weather in May »Weather in June
June, the first month of the summer in Oakley, is a warm month, with an average temperature varying between 80.4°F (26.9°C) and 64°F (17.8°C). Oakley's weather in June shows a minor rise in the average high-temperature, moving slightly up from May's pleasant 72.9°F (22.7°C) to a moderately hot 80.4°F (26.9°C). Weather in June »Weather in July
July, like June, in Oakley, Illinois, is a moderately hot summer month, with an average temperature varying between 82°F (27.8°C) and 65.5°F (18.6°C). The warmest period is July, when temperatures fluctuate between an average high of 82°F (27.8°C) and a low of 65.5°F (18.6°C). For most parts of 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 Oakley, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 63.7°F (17.6°C). August reports an average high-temperature of a still moderately hot 81.1°F (27.3°C), slightly varied from July's 82°F (27.8°C). Weather in August »Weather in September
September, the first month of the autumn in Oakley, is also a moderately hot month, with an average temperature varying between 76.8°F (24.9°C) and 58.5°F (14.7°C). During September, Oakley observes a subtle ascent to a still warm 76.8°F (24.9°C) from August's 81.1°F (27.3°C) in the average high-temperature. Weather in September »Weather in October
October, like September, in Oakley, Illinois, is another comfortable autumn month, with an average temperature varying between 48°F (8.9°C) and 63.9°F (17.7°C). A subtle decrease in the average high-temperature marks October, falling from September's warm 76.8°F (24.9°C) to a refreshing 63.9°F (17.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Oakley, Illinois, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 49.6°F (9.8°C). A change in temperatures is noted as October gives way to November, with average highs reducing from a refreshing 63.9°F (17.7°C) to a chilly 49.6°F (9.8°C). Weather in November »Weather in December
December, the first month of the winter in Oakley, is also a wintry month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 38.3°F (3.5°C). The arrival of December corresponds with a shift in temperature, down from a chilly 49.6°F (9.8°C) in November to an icy 38.3°F (3.5°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
January proves to be the coldest month, recording an average maximum temperature of 32.5°F (0.3°C) and a minimum temperature of 20.8°F (-6.2°C).
In Oakley, during the entire year, the rain falls for 147.7 days and collects up to 24.61" (625mm) of precipitation.
January through April, November and December are months with snowfall in Oakley, Illinois.
January is the month with the most snowfall. Snow falls for 9.3 days and accumulates 2.72" (69mm) of snow.
Throughout the year, in Oakley, there are 29.3 snowfall days, and 8.78" (223mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 4.1h of sunshine.
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.
April is the month with the most rainfall in Oakley, Illinois. Rain falls for 15.1 days and accumulates 2.95" (75mm) of precipitation.
In Oakley, Illinois, snow does not fall in May through October.
The month with the longest days in Oakley is June, with an average of 15h and 0min of daylight.
The month with the most sunshine is June, with an average of 10.4h of sunshine.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
With its average high temperature of 82°F (27.8°C) and a low of 65.5°F (18.6°C), July is regarded as the warmest month.
July is the most humid month in Oakley, Illinois, with an average relative humidity of 84%.
October is the least humid month, with an average relative humidity of 70%.
December is the month with the least rainfall in Oakley. Rain falls for 8 days and accumulates 1.38" (35mm) of precipitation.
With an average of 9h and 24min of daylight, December has the shortest days of the year in Oakley, Illinois.
Average temperature
Oakley, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure
Oakley, IL
- Average pressure in January:
30.15"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:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Oakley, IL
- Average wind speed in January:
10.8mph - Average wind speed in February:
10.7mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Oakley, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Oakley, IL
- Average rainfall in January:
1.61" - Average rainfall in February:
1.42" - Average rainfall in March:
2.01" - Average rainfall in April:
2.95" - Average rainfall in May:
2.91" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.17" - Average rainfall in August:
2.32" - Average rainfall in September:
1.54" - Average rainfall in October:
2.13" - Average rainfall in November:
1.57" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is December (1.38").
Average rainfall days
Oakley, IL
- Average rainfall days in January:
7 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
12 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7 days).
Average snowfall
Oakley, IL
The month with the highest snowfall is January (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Oakley, IL
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
7.4 days - Average snowfall days in March:
3 days - Average snowfall days in April:
0.8 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:
1.8 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Oakley, 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 24min - 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:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 48min - Average sunshine in September:
9h and 6min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Oakley, IL
- Average sunshine days in January:
16.2 days - Average sunshine days in February:
14.4 days - Average sunshine days in March:
15 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (10.3 days).
Average UV index
Oakley, IL
The months with the highest UV index are 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
Oakley, IL
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility
Oakley, 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).
