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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, like December, is another subzero cold winter month in Deerfield, Illinois, with an average temperature fluctuating between 18.9°F (-7.3°C) and 28.6°F (-1.9°C). Deerfield, Illinois, witnesses the coldest weather in January, with temperatures averaging a high of 28.6°F (-1.9°C) and a low of 18.9°F (-7.3°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Deerfield, Illinois, with an average temperature varying between 31.3°F (-0.4°C) and 21.6°F (-5.8°C). As January turns into February, the average high-temperatures rest at a still subzero cold 31.3°F (-0.4°C), showing a minor variation from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Deerfield, is an icy month, with an average temperature varying between 31.5°F (-0.3°C) and 41.5°F (5.3°C). March's arrival coincides with a temperature rise, moving from February's freezing cold 31.3°F (-0.4°C) to a wintry 41.5°F (5.3°C). Weather in March »
Weather in April
April in Deerfield, Illinois, is a fresh spring month, with an average temperature varying between 39.7°F (4.3°C) and 50.9°F (10.5°C). With the onset of April, Deerfield sees a temperature rise, with the average high-temperature moving from March's wintry 41.5°F (5.3°C) to a cool 50.9°F (10.5°C). Weather in April »
Weather in May
May, the last month of the spring in Deerfield, is a refreshing month, with an average temperature ranging between min 49.6°F (9.8°C) and max 61.2°F (16.2°C). As May begins, there is an increase in the average high-temperature, moving from a cool 50.9°F (10.5°C) in April to a comfortable 61.2°F (16.2°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Deerfield, Illinois, with temperature in the range of an average low of 59.4°F (15.2°C) and an average high of 71.1°F (21.7°C). In Deerfield, stepping into June brings a temperature increase, moving up from May's comfortable 61.2°F (16.2°C) to an agreeable 71.1°F (21.7°C). Weather in June »
Weather in July
July is a moderately hot summer month in Deerfield, Illinois, with an average temperature varying between 77.7°F (25.4°C) and 66.7°F (19.3°C). The warmest month is July, with an average high-temperature of 77.7°F (25.4°C) and an average low-temperature of 66.7°F (19.3°C). Weather in July »
Weather in August
August, the last month of the summer in Deerfield, is also a moderately hot month, with an average temperature ranging between min 66.7°F (19.3°C) and max 77.5°F (25.3°C). Entering August, Deerfield's average high-temperature reads a still moderately hot 77.5°F (25.3°C), indicating a close resemblance to the previous month's climate. Weather in August »
Weather in September
September, the first month of the autumn in Deerfield, is still a pleasant month, with an average temperature ranging between min 60.1°F (15.6°C) and max 71.2°F (21.8°C). The start of September involves a subtle temperature drop, shifting from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, in Deerfield, Illinois, is another mild autumn month, with an average temperature varying between 58.6°F (14.8°C) and 47.7°F (8.7°C). October suggests a modest reduction in the average high-temperature, shifting from an agreeable 71.2°F (21.8°C) in September to a moderate 58.6°F (14.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Deerfield, is another chilly month, with an average temperature ranging between max 45.5°F (7.5°C) and min 35.1°F (1.7°C). Start of November brings a shift in the average high-temperature, falling from October's refreshing 58.6°F (14.8°C) to a chilly 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Deerfield, Illinois, with temperature in the range of an average low of 26.2°F (-3.2°C) and an average high of 34.5°F (1.4°C). Deerfield in December demonstrates a small temperature transition, adjusting from an average high of a frosty 45.5°F (7.5°C) in November to an icy 34.5°F (1.4°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Deerfield?
January is the coldest month of the year in Deerfield, registering average temperatures as high as 28.6°F (-1.9°C) and as low as 18.9°F (-7.3°C).
What is the most humid month in Deerfield?
January and February, with an average relative humidity of 82%, are most humid months.
How many days does it rain in Deerfield?
In Deerfield, during the entire year, the rain falls for 154.1 days and collects up to 30.24" (768mm) of precipitation.
When does it snow in Deerfield?
Months with snowfall are January through April, October through December.
When does it snow the most in Deerfield?
January is the month with the most snowfall. Snow falls for 11.9 days and accumulates 4.13" (105mm) of snow.
How many days does it snow in Deerfield?
In Deerfield, Illinois, during the entire year, snow falls for 42.9 days and aggregates up to 13.82" (351mm) of snow.
What is the month with the least sunshine in Deerfield?
The month with the least sunshine is January, with an average of 3.8h of sunshine.
When is Daylight Saving Time (DST) in Deerfield?
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.
What is the wettest month in Deerfield?
The wettest months are May and June, with an average 3.82" (97mm) of rainfall.
When it does not snow in Deerfield?
In Deerfield, Illinois, snow does not fall in May through September.
When are the longest days in Deerfield?
With an average of 15h and 12min of daylight, June has the longest days of the year.
When is the highest UV index in Deerfield?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months in Deerfield?
With average high and low temperatures of 77.7°F (25.4°C) and 66.7°F (19.3°C) respectively, July is Deerfield's warmest month.
What month has the most sunshine in Deerfield?
The month with the most sunshine in Deerfield is August, with an average of 10.7h of sunshine.
What is the least humid month in Deerfield?
October is the least humid month, with an average relative humidity of 73%.
What is the driest month in Deerfield?
December is the month with the least rainfall in Deerfield, Illinois. Rain falls for 8.6 days and accumulates 1.3" (33mm) of precipitation.
What is the month with the shortest days in Deerfield?
December has the shortest days of the year in Deerfield, Illinois, with an average of 9h and 12min of daylight.
When is the lowest UV index in Deerfield?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Deerfield, IL
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (28.6°F).
The months with the highest average low temperature are July and August (66.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Deerfield, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Deerfield, IL
- Average wind speed in January:
11.9mph - Average wind speed in February:
11.6mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.9mph - Average wind speed in October:
10.7mph - Average wind speed in November:
11.5mph - Average wind speed in December:
11.2mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity
Deerfield, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Deerfield, IL
- Average rainfall in January:
1.54" - Average rainfall in February:
1.54" - Average rainfall in March:
1.77" - Average rainfall in April:
3.43" - Average rainfall in May:
3.82" - Average rainfall in June:
3.82"
The wettest months (with the highest rainfall) are May and June (3.82").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days
Deerfield, IL
- Average rainfall days in January:
6.2 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
16.1 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
17.4 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
13.6 days - Average rainfall days in October:
14.7 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Deerfield, IL
The month with the highest snowfall is January (4.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Deerfield, IL
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
2.4 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:
0.5 days - Average snowfall days in November:
3.7 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Deerfield, IL
- Average daylight in January:
9h and 3min - 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 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Deerfield, IL
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
14 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
13.3 days - Average sunshine days in October:
13.6 days - Average sunshine days in November:
14.7 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is December (15.3 days).
The month with the least sunshine days is April (10.8 days).
Average UV index
Deerfield, 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
Deerfield, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility
Deerfield, 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).
Deerfield, Illinois, USA
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