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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, in Millbrook, Illinois, is a freezing cold winter month, with an average temperature varying between 16.2°F (-8.8°C) and 28.2°F (-2.1°C). With average temperatures fluctuating between a high of 28.2°F (-2.1°C) and a low of 16.2°F (-8.8°C), January stands out as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Millbrook, is a cold month, with an average temperature varying between 32.2°F (0.1°C) and 19.2°F (-7.1°C). The transition from January to February sees average high-temperatures adjusting to a cold 32.2°F (0.1°C), from a not significantly different 28.2°F (-2.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Millbrook, Illinois, with an average temperature ranging between min 31.3°F (-0.4°C) and max 45.9°F (7.7°C). In March, the average high-temperature increases from an icy 32.2°F (0.1°C) in February to a chilly 45.9°F (7.7°C). Weather in March »
Weather in April
April is a refreshing spring month in Millbrook, Illinois, with an average temperature fluctuating between 57.4°F (14.1°C) and 41.2°F (5.1°C). Millbrook's weather shows a temperature rise with the arrival of April, moving from a chilly 45.9°F (7.7°C) in March to a mild 57.4°F (14.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Millbrook, Illinois, with temperature in the range of an average high of 69.6°F (20.9°C) and an average low of 52.3°F (11.3°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a refreshing 57.4°F (14.1°C) to an agreeable 69.6°F (20.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Millbrook, Illinois, with an average temperature varying between 60.8°F (16°C) and 78.3°F (25.7°C). With the beginning of June, Millbrook's average high-temperature sees a minor increase, transitioning from a pleasant 69.6°F (20.9°C) in May to a moderately hot 78.3°F (25.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Millbrook, Illinois, with an average temperature ranging between max 80.6°F (27°C) and min 63.5°F (17.5°C). July is the month when Millbrook, Illinois, experiences its warmest temperatures, averaging a high of 80.6°F (27°C) and a low of 63.5°F (17.5°C). The heat index in July is estimated at a tropical 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Millbrook, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 61.7°F (16.5°C). With the advent of August, Millbrook experiences an average high-temperature of a still moderately hot 79.3°F (26.3°C), mirroring a close resemblance to the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Millbrook, Illinois, with an average temperature fluctuating between 55.6°F (13.1°C) and 73.8°F (23.2°C). A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a warm 79.3°F (26.3°C) to a still moderately hot 73.8°F (23.2°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Millbrook, Illinois, with an average temperature ranging between max 60.6°F (15.9°C) and min 45°F (7.2°C). The onset of October results in a decrease in the average high-temperature, receding from a warm 73.8°F (23.2°C) in September to a moderate 60.6°F (15.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Millbrook, is another chilly month, with an average temperature fluctuating between 45.9°F (7.7°C) and 32.9°F (0.5°C). With the onset of November, Millbrook's average high-temperature experiences a noticeable drop, receding from October's moderate 60.6°F (15.9°C) to a chilly 45.9°F (7.7°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Millbrook, Illinois, with an average temperature fluctuating between 34.2°F (1.2°C) and 23.9°F (-4.5°C). Stepping into December, Millbrook observes a temperature decline, with the average high falling from November's chilly 45.9°F (7.7°C) to a wintry 34.2°F (1.2°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Millbrook?
January is the coldest month, exhibiting average temperatures of 28.2°F (-2.1°C) at the peak and 16.2°F (-8.8°C) at the base.
How many days does it rain in Millbrook?
Throughout the year, there are 168.3 rainfall days, and 35.47" (901mm) of precipitation is accumulated.
When does it snow in Millbrook?
January through April, October through December are months with snowfall in Millbrook.
When does it snow the most in Millbrook?
The month with the most snowfall is January, when snow falls for 13.4 days and typically aggregates up to 4.88" (124mm) of snow.
How much does it snow in Millbrook?
In Millbrook, during the entire year, snow falls for 47.1 days and aggregates up to 16.61" (422mm) of snow.
What is the month with the least sunshine in Millbrook?
With an average of 3.8h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in Millbrook?
The months with the lowest UV index in Millbrook are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Millbrook?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Millbrook, 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 in Millbrook?
May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 4.88" (124mm) of precipitation.
When it does not snow in Millbrook?
In Millbrook, snow does not fall in May through September.
When are the longest days in Millbrook?
The month with the longest days in Millbrook is June, with an average of 15h and 6min of daylight.
What is the month with the most sunshine in Millbrook?
The months with the most sunshine are June and August, with an average of 9.6h of sunshine.
What are the months with the highest UV index in Millbrook?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What month is the hottest in Millbrook?
July tends to be the warmest month in Millbrook, Illinois, with temperatures averaging a daily high of 80.6°F (27°C) and a low of 63.5°F (17.5°C).
What are the most humid months in Millbrook?
July and August, with an average relative humidity of 84%, are most humid months.
What is the least humid month in Millbrook?
With an average relative humidity of 74%, October is the least humid month in Millbrook.
What is the driest month in Millbrook?
The month with the least rainfall in Millbrook, Illinois, is November, when the rain falls for 11 days and typically collects 1.73" (44mm) of precipitation.
What is the month with the shortest days in Millbrook?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Millbrook, Illinois.
Average temperature
Millbrook, IL
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.2°F).
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Millbrook, IL
- Average pressure in January:
30.12"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Millbrook, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6mph - Average wind speed in September:
7mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.1mph
The windiest months (with the highest average wind speed) are January and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Millbrook, IL
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Millbrook, IL
- Average rainfall in January:
1.85" - Average rainfall in February:
1.85" - Average rainfall in March:
2.09" - Average rainfall in April:
4.02" - Average rainfall in May:
4.88" - Average rainfall in June:
4.65"
- Average rainfall in July:
3.9" - Average rainfall in August:
3.11" - Average rainfall in September:
2.52" - Average rainfall in October:
3.03" - Average rainfall in November:
1.73" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is May (4.88").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days
Millbrook, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
17.9 days - Average rainfall days in May:
19.4 days - Average rainfall days in June:
19.8 days
- Average rainfall days in July:
20.3 days - Average rainfall days in August:
18.3 days - Average rainfall days in September:
14 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
11 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is February (6 days).
Average snowfall
Millbrook, IL
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Millbrook, IL
- Average snowfall days in January:
13.4 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
6.6 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.2 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:
3.2 days - Average snowfall days in December:
10.2 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Millbrook, 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 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 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- 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 3min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 3min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The months with the most sunshine are June and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Millbrook, IL
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.1 days - Average sunshine days in April:
9.4 days - Average sunshine days in May:
9.3 days - Average sunshine days in June:
8.4 days
- Average sunshine days in July:
7.2 days - Average sunshine days in August:
9.1 days - Average sunshine days in September:
13.4 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index
Millbrook, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Millbrook, 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 34).
Average visibility
Millbrook, IL
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Millbrook, Illinois, USA
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