Expand
Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Sibley, Illinois, is a freezing cold winter month, with an average temperature varying between -6.9°C and -0.3°C. January stands out as Sibley's coldest month, with temperatures ranging between an average high of -0.3°C and a low of -6.9°C. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Sibley, Illinois, with an average temperature fluctuating between 2.1°C and -5.2°C. The transition into February shows a subtle variation to a wintry 2.1°C from January's -0.3°C in the average high-temperature. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Sibley, Illinois, with an average temperature ranging between max 9.1°C and min 1.2°C. Sibley's transition into March brings a rise in the average high-temperature, moving from a cold 2.1°C in February to a chilly 9.1°C. Weather in March »
Weather in April
April is a refreshing spring month in Sibley, Illinois, with an average temperature fluctuating between 6.8°C and 16°C. April indicates a change in the average high-temperature, moving up from a chilly 9.1°C in March to an enjoyable 16°C. Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Sibley, Illinois, with temperature in the range of an average high of 22°C and an average low of 13°C. Sibley's transition into May is marked by a temperature shift, moving from a comfortable 16°C in April to a pleasant 22°C. Weather in May »
Weather in June
June, the first month of the summer in Sibley, is a moderately hot month, with an average temperature varying between 17.1°C and 26.4°C. The commencement of June sees a minor shift in the average high-temperature, moving from a pleasant 22°C in May to a moderately hot 26.4°C. Weather in June »
Weather in July
July, the same as June, is another warm summer month in Sibley, Illinois, with an average temperature ranging between max 27.1°C and min 18.1°C. July, with its high-temperature average of 27.1°C and a low-temperature average of 18.1°C, is the warmest month. The average heat index in July is computed to be a tropical 30°C. Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Sibley, Illinois, with temperature in the range of an average low of 17.1°C and an average high of 26.5°C. The advent of August sees the average high-temperature at a still moderately hot 26.5°C, subtly shifted from July's 27.1°C. Weather in August »
Weather in September
September, the first month of the autumn in Sibley, is also a moderately hot month, with an average temperature fluctuating between 14.1°C and 24.3°C. As September unfolds, the average high-temperature reaches a still moderately hot 24.3°C, hinting at a slight fluctuation from the previous month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Sibley, Illinois, with an average temperature varying between 8.3°C and 16.9°C. October's arrival comes with a decrease in the average high-temperature, moving from a moderately hot 24.3°C in September to a refreshing 16.9°C. Weather in October »
Weather in November
November, the last month of the autumn in Sibley, is another chilly month, with an average temperature fluctuating between 1.7°C and 8.8°C. November is marked by a significant decrease, with the average high-temperature retreating from an enjoyable 16.9°C in October to a chilly 8.8°C. Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Sibley, Illinois, with an average temperature fluctuating between 2.5°C and -2.8°C. Sibley's weather in December involves a decrease in the average high-temperature, moving down from November's chilly 8.8°C to an icy 2.5°C. Weather in December »
Updated: Jun 26, 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
What is the coldest month?
January, noted for its average high-temperature of -0.3°C and an average low-temperature of -6.9°C, is considered the coldest month.
How much does it rain?
Throughout the year, there are 126.2 rainfall days, and 380mm of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall in Sibley, Illinois.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 9.3 days and typically aggregates up to 35mm of snow.
How many days does it snow?
Throughout the year, in Sibley, there are 29.4 snowfall days, and 119mm of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.8h of sunshine.
What is the driest month?
The months with the least rainfall are February and December Rain falls for 5.1 days and accumulates 19mm of rain.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sibley, Illinois, 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.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 14.9 days and typically aggregates up to 49mm of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
With an average of 9.8h of sunshine, June has the most sunshine of the year.
What are the months with the highest UV index?
The months with the highest UV index in Sibley are June through August, with an average maximum UV index of 6.
What are the warmest months?
Sibley's warmest month, July, registers temperatures that range from a high of 27.1°C to a low of 18.1°C.
What is the most humid month?
July is the most humid month, with an average relative humidity of 85%.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
When is the lowest UV index?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Sibley, IL
The warmest month (with the highest average high temperature) is July (27.1°C).
The month with the lowest average high temperature is January (-0.3°C).
The month with the highest average low temperature is July (18.1°C).
The coldest month (with the lowest average low temperature) is January (-6.9°C).
Average pressure
Sibley, IL
- Average pressure in January:
1020.5mbar - Average pressure in February:
1019.6mbar - Average pressure in March:
1018.7mbar - Average pressure in April:
1014mbar - Average pressure in May:
1014.5mbar - Average pressure in June:
1013.2mbar
- Average pressure in July:
1015mbar - Average pressure in August:
1015.3mbar - Average pressure in September:
1016.9mbar - Average pressure in October:
1016.6mbar - Average pressure in November:
1019.8mbar - Average pressure in December:
1019.8mbar
The month with the highest atmospheric pressure is January (1020.5mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).
Average wind speed
Sibley, IL
- Average wind speed in January:
17.7km/h - Average wind speed in February:
17.4km/h - Average wind speed in March:
16.9km/h - Average wind speed in April:
17.4km/h - Average wind speed in May:
14.8km/h - Average wind speed in June:
12.8km/h
- Average wind speed in July:
10.7km/h - Average wind speed in August:
10.5km/h - Average wind speed in September:
12.2km/h - Average wind speed in October:
15.6km/h - Average wind speed in November:
16.8km/h - Average wind speed in December:
16.7km/h
The windiest month (with the highest average wind speed) is January (17.7km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity
Sibley, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Sibley, IL
The wettest month (with the highest rainfall) is May (49mm).
The driest months (with the least rainfall) are February and December (19mm).
Average rainfall days
Sibley, IL
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.1 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
6.1 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Sibley, IL
The month with the highest snowfall is January (35mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days
Sibley, IL
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
3.4 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:
0.2 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
6.5 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
Sibley, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Sibley, IL
- Average sunshine days in January:
18.3 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
17 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (10.3 days).
Average UV index
Sibley, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Sibley, 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 33).
Average visibility
Sibley, IL
The month with the highest visibility is October (10km).
The months with the lowest visibility are July and August (8km).