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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
Weather in January
January, the same as December, is a wintry winter month in Donnellson, Illinois, with an average temperature fluctuating between 35.4°F (1.9°C) and 22.6°F (-5.2°C). January, with average temperatures reaching a high of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is another cold month in Donnellson, Illinois, with an average temperature ranging between max 39.7°F (4.3°C) and min 26.4°F (-3.1°C). In February, Donnellson experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 35.4°F (1.9°C) in January to a still cold 39.7°F (4.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a cool month in Donnellson, Illinois, with an average temperature varying between 52.3°F (11.3°C) and 36.5°F (2.5°C). March sees a temperature increase, moving from a wintry 39.7°F (4.3°C) in February to a cool 52.3°F (11.3°C). Weather in March »
Weather in April
April in Donnellson, Illinois, is a comfortable spring month, with temperature in the range of an average high of 63.7°F (17.6°C) and an average low of 46.6°F (8.1°C). Donnellson's transition into April is marked by a temperature shift, moving from a fresh 52.3°F (11.3°C) in March to an enjoyable 63.7°F (17.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Donnellson, Illinois, with an average temperature ranging between max 73.6°F (23.1°C) and min 56.8°F (13.8°C). Noticing a change, the average high-temperature during May moves from April's comfortable 63.7°F (17.6°C) to a warm 73.6°F (23.1°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Donnellson, Illinois, with an average temperature varying between 81.9°F (27.7°C) and 65.5°F (18.6°C). June brings a slight rise in Donnellson's average high-temperature, moving from a moderately hot 73.6°F (23.1°C) in May to a still warm 81.9°F (27.7°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Donnellson, Illinois, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 67.1°F (19.5°C). With its high average temperature of 83.8°F (28.8°C) and a low of 67.1°F (19.5°C), July is regarded as the warmest month. July's average heat index is evaluated at a sweltering 95°F (35°C). Weather in July »
Weather in August
August, the last month of the summer in Donnellson, is also a moderately hot month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 64.9°F (18.3°C). Donnellson's August reports an average high-temperature of a still warm 82.6°F (28.1°C), exhibiting a minor difference from July. Weather in August »
Weather in September
September, the first month of the autumn in Donnellson, is still a warm month, with an average temperature ranging between min 59.2°F (15.1°C) and max 77.7°F (25.4°C). Donnellson's weather in September displays an average high-temperature of a still warm 77.7°F (25.4°C), showing minor disparity from August's 82.6°F (28.1°C). Weather in September »
Weather in October
October, like September, in Donnellson, Illinois, is another enjoyable autumn month, with an average temperature varying between 64.8°F (18.2°C) and 48.4°F (9.1°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a moderately hot 77.7°F (25.4°C) to a refreshing 64.8°F (18.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Donnellson, Illinois, with temperature in the range of an average low of 36.9°F (2.7°C) and an average high of 51.4°F (10.8°C). The onset of November results in a decrease in the average high-temperature, receding from a comfortable 64.8°F (18.2°C) in October to a cool 51.4°F (10.8°C). Weather in November »
Weather in December
December, the first month of the winter in Donnellson, is also a wintry month, with an average temperature varying between 40.3°F (4.6°C) and 28.9°F (-1.7°C). Observing a mild shift, the average high-temperature during December reduces from November's cool 51.4°F (10.8°C) to a wintry 40.3°F (4.6°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
What is the coldest time of year in Donnellson?
Donnellson's coldest weather arrives in January, when temperatures average a high of 35.4°F (1.9°C) and a low of 22.6°F (-5.2°C).
How much does it rain in Donnellson?
Throughout the year, in Donnellson, there are 138.5 rainfall days, and 24.33" (618mm) of precipitation is accumulated.
When does it snow in Donnellson?
January through March, November and December are months with snowfall.
How much does it snow in Donnellson?
Throughout the year, there are 20.6 snowfall days, and 6.3" (160mm) of snow is accumulated.
What is the month with the least sunshine in Donnellson?
With an average of 4.3h of sunshine, January has the least sunshine of the year in Donnellson.
When is the lowest UV index in Donnellson?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month in Donnellson?
February is the month with the least rainfall. Rain falls for 7.4 days and accumulates 1.34" (34mm) of precipitation.
What is the snowiest month in Donnellson?
The month with the most snowfall is February, when snow falls for 5.8 days and typically aggregates up to 1.81" (46mm) of snow.
When is Daylight Saving Time (DST) in Donnellson?
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.
When it does not snow in Donnellson?
April through October are months without snowfall in Donnellson.
What is the rainiest month in Donnellson?
The month with the most rainfall is June, when the rain falls for 14.6 days and typically aggregates up to 3.35" (85mm) of precipitation.
When are the longest days in Donnellson?
With an average of 14h and 54min of daylight, June has the longest days of the year in Donnellson.
What month has the most sunshine in Donnellson?
The month with the most sunshine in Donnellson is June, with an average of 10.4h of sunshine.
What are the months with the highest UV index in Donnellson?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Donnellson.
What part of the year is the hottest in Donnellson?
The month of July sees the average highest temperatures, reaching 83.8°F (28.8°C) at the peak and 67.1°F (19.5°C) at the low.
What is the most humid month in Donnellson?
The most humid month in Donnellson is July, with an average relative humidity of 82%.
What is the least humid month in Donnellson?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days in Donnellson?
December has the shortest days of the year in Donnellson, Illinois, with an average of 9h and 30min of daylight.
Average temperature
Donnellson, IL
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure
Donnellson, IL
- Average pressure in January:
30.16"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:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Donnellson, 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:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
6mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity
Donnellson, IL
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Donnellson, IL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.34" - Average rainfall in March:
1.89" - Average rainfall in April:
2.72" - Average rainfall in May:
2.76" - Average rainfall in June:
3.35"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days
Donnellson, IL
- Average rainfall days in January:
7 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).
Average snowfall
Donnellson, IL
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Donnellson, IL
- Average snowfall days in January:
6.2 days - Average snowfall days in February:
5.8 days - Average snowfall days in March:
2.4 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Donnellson, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- 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:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
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 18min).
Average sunshine days
Donnellson, IL
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
16.2 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
14 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
13.5 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
19.8 days - Average sunshine days in November:
19 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Donnellson, 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
Donnellson, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility
Donnellson, IL
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Donnellson, Illinois, USA
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