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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 a freezing cold winter month in Buffalo Grove, Illinois, with an average temperature varying between 28°F (-2.2°C) and 17.6°F (-8°C). Buffalo Grove's coldest month, January, generally records average temperatures ranging from a high of 28°F (-2.2°C) to a low of 17.6°F (-8°C). Weather in January »
Weather in February
February, the last month of the winter in Buffalo Grove, is also a subzero cold month, with an average temperature ranging between min 20.1°F (-6.6°C) and max 31.5°F (-0.3°C). In February, the average high-temperature registers at a still freezing cold 31.5°F (-0.3°C), nearly identical to January's 28°F (-2.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Buffalo Grove, Illinois, with an average temperature varying between 43.3°F (6.3°C) and 30.6°F (-0.8°C). March's arrival brings a temperature shift, moving from a freezing cold 31.5°F (-0.3°C) in February to a chilly 43.3°F (6.3°C). Weather in March »
Weather in April
April is a cool spring month in Buffalo Grove, Illinois, with an average temperature fluctuating between 39.4°F (4.1°C) and 54.1°F (12.3°C). Buffalo Grove in April shows a temperature shift, moving from an average high of a chilly 43.3°F (6.3°C) in March to a cool 54.1°F (12.3°C). Weather in April »
Weather in May
May, the last month of the spring in Buffalo Grove, is a refreshing month, with an average temperature varying between 65.8°F (18.8°C) and 50.5°F (10.3°C). As Buffalo Grove transitions into May, the average high-temperature shows a change, moving from a cool 54.1°F (12.3°C) in April to an enjoyable 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Buffalo Grove, Illinois, with an average temperature fluctuating between 59.9°F (15.5°C) and 75.7°F (24.3°C). Buffalo Grove's June weather shows an increase in high-temperatures, moving from May's enjoyable 65.8°F (18.8°C) to a warm 75.7°F (24.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Buffalo Grove, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 81°F (27.2°C). July, noted for its average high-temperature of 81°F (27.2°C) and an average low-temperature of 65.8°F (18.8°C), is considered the warmest month. The heat index for July is estimated at a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Buffalo Grove, is another warm month, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 64.9°F (18.3°C). The advent of August brings an average high-temperature of a still warm 79.7°F (26.5°C), exhibiting minor difference from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Buffalo Grove, Illinois, with an average temperature fluctuating between 58.1°F (14.5°C) and 73°F (22.8°C). Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 79.7°F (26.5°C) in August to an agreeable 73°F (22.8°C). Weather in September »
Weather in October
October, the same as September, in Buffalo Grove, Illinois, is another refreshing autumn month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 46.2°F (7.9°C). During Buffalo Grove's transition into October, the average high-temperature lessens, moving from an agreeable 73°F (22.8°C) in September to a moderate 59.7°F (15.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Buffalo Grove, is another chilly month, with an average temperature varying between 45.5°F (7.5°C) and 33.6°F (0.9°C). As November commences, the average high-temperature shows a reduction, transitioning from a mild 59.7°F (15.4°C) in October to a frosty 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Buffalo Grove, Illinois, with an average temperature ranging between max 34.5°F (1.4°C) and min 24.8°F (-4°C). As December arrives, Buffalo Grove's weather displays a decrease in high-temperatures, transitioning from November's chilly 45.5°F (7.5°C) to a wintry 34.5°F (1.4°C). Weather in December »
Updated: Jul 20, 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?
Buffalo Grove experiences its average lowest temperatures in January, reaching a peak of 28°F (-2.2°C) and a minimum of 17.6°F (-8°C).
What is the most humid month?
January is the most humid month, with an average relative humidity of 83%.
How many days does it rain?
In Buffalo Grove, during the entire year, the rain falls for 154.2 days and collects up to 28.94" (735mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
When does it snow the most?
January is the month with the most snowfall in Buffalo Grove. Snow falls for 12.5 days and accumulates 4.8" (122mm) of snow.
How much does it snow?
In Buffalo Grove, during the entire year, snow falls for 45.4 days and aggregates up to 16.85" (428mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.7h of sunshine.
When is Daylight Saving Time (DST)?
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 rainiest month?
May is the month with the most rainfall. Rain falls for 17.6 days and accumulates 3.66" (93mm) of precipitation.
When it does not snow?
June 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 12min of daylight.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
In Buffalo Grove, the average highest temperatures are observed in July, with a high of 81°F (27.2°C) and a low of 65.8°F (18.8°C).
What month has the most sunshine?
With an average of 10.3h of sunshine, August has the most sunshine of the year in Buffalo Grove.
What is the least humid month?
October is the least humid month, with an average relative humidity of 73%.
What is the driest month in Buffalo Grove?
December is the month with the least rainfall in Buffalo Grove. Rain falls for 8.4 days and accumulates 1.34" (34mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
When is the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Buffalo Grove, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure
Buffalo Grove, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"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 (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Buffalo Grove, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.2mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.4mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Buffalo Grove, IL
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Buffalo Grove, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.61" - Average rainfall in March:
1.77" - Average rainfall in April:
3.35" - Average rainfall in May:
3.66" - Average rainfall in June:
3.54"
- Average rainfall in July:
2.95" - Average rainfall in August:
2.8" - Average rainfall in September:
2.24" - Average rainfall in October:
2.56" - Average rainfall in November:
1.54" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is December (1.34").
Average rainfall days
Buffalo Grove, IL
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
11 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
17.6 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
16.1 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
14.4 days - Average rainfall days in November:
9.8 days - Average rainfall days in December:
8.4 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Buffalo Grove, IL
- Average snowfall in January:
4.8" - Average snowfall in February:
4.45" - Average snowfall in March:
1.22" - Average snowfall in April:
1.89" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Buffalo Grove, IL
- Average snowfall days in January:
12.5 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
6.2 days - Average snowfall days in April:
2 days - Average snowfall days in May:
0.1 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:
4 days - Average snowfall days in December:
9.3 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Buffalo Grove, 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 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Buffalo Grove, IL
- Average sunshine days in January:
13.5 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
10.3 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
11.6 days - Average sunshine days in August:
12.8 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
14 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is April (10.3 days).
Average UV index
Buffalo Grove, 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
Buffalo Grove, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Buffalo Grove, 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).
Buffalo Grove, Illinois, USA
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