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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 Markham, Illinois, is a freezing cold winter month, with an average temperature varying between 18.9°F (-7.3°C) and 29.7°F (-1.3°C). January, having an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 18.9°F (-7.3°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Markham, Illinois, with an average temperature ranging between min 21.2°F (-6°C) and max 33.1°F (0.6°C). The advent of February brings an average high-temperature of a cold 33.1°F (0.6°C), almost identical to the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Markham, is a frosty month, with an average temperature fluctuating between 32.4°F (0.2°C) and 45.5°F (7.5°C). Markham's transition into March brings a rise in the average high-temperature, moving from a wintry 33.1°F (0.6°C) in February to a frosty 45.5°F (7.5°C). Weather in March »
Weather in April
April is a mild spring month in Markham, Illinois, with an average temperature fluctuating between 56.7°F (13.7°C) and 41.7°F (5.4°C). The transition to April introduces an increase in the average high-temperature, shifting from a chilly 45.5°F (7.5°C) in March to a mild 56.7°F (13.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Markham, Illinois, with temperature in the range of an average low of 52.3°F (11.3°C) and an average high of 68.7°F (20.4°C). Markham's weather shows a temperature rise with the arrival of May, moving from a refreshing 56.7°F (13.7°C) in April to an agreeable 68.7°F (20.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Markham, Illinois, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 77.7°F (25.4°C). The shift into June is marked by a rise in the average high-temperature, moving from May's agreeable 68.7°F (20.4°C) to a moderately hot 77.7°F (25.4°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Markham, Illinois, with an average temperature fluctuating between 81.3°F (27.4°C) and 65.8°F (18.8°C). Markham, Illinois, records the warmest temperatures in July, averaging a high of 81.3°F (27.4°C) and a low of 65.8°F (18.8°C). For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Markham, is another warm month, with an average temperature fluctuating between 80.1°F (26.7°C) and 64.6°F (18.1°C). Markham's weather in August indicates an average high-temperature of a still moderately hot 80.1°F (26.7°C), nearly consistent with the 81.3°F (27.4°C) of July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Markham, Illinois, with an average temperature ranging between max 73.9°F (23.3°C) and min 58.3°F (14.6°C). September sees a slight reduction in average high-temperature, with a shift from a warm 80.1°F (26.7°C) in August to a still moderately hot 73.9°F (23.3°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Markham, Illinois, with an average temperature varying between 46.9°F (8.3°C) and 61.2°F (16.2°C). The commencement of October involves a temperature shift, with the average high-temperature dropping from a moderately hot 73.9°F (23.3°C) in September to an enjoyable 61.2°F (16.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Markham, is also a frosty month, with an average temperature fluctuating between 46.9°F (8.3°C) and 34.9°F (1.6°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's comfortable 61.2°F (16.2°C) to a chilly 46.9°F (8.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Markham, Illinois, with an average temperature varying between 35.6°F (2°C) and 25.9°F (-3.4°C). The start of December involves a temperature drop, moving from a chilly 46.9°F (8.3°C) in November to a wintry 35.6°F (2°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 month is the coldest in Markham?
January is Markham's coldest month, registering average high temperatures of 29.7°F (-1.3°C) and lows of 18.9°F (-7.3°C).
What are the most humid months in Markham?
January and February, with an average relative humidity of 82%, are most humid months.
How much does it rain in Markham?
Throughout the year, there are 155.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.
When does it snow in Markham?
January through April, October through December are months with snowfall in Markham.
When does it snow the most in Markham?
The month with the most snowfall is January, when snow falls for 12.6 days and typically aggregates up to 4.53" (115mm) of snow.
How much does it snow in Markham?
In Markham, during the entire year, snow falls for 44.6 days and aggregates up to 16.46" (418mm) of snow.
What is the month with the least sunshine in Markham?
January has the least sunshine of the year in Markham, Illinois, with an average of 3.6h of sunshine.
When is Daylight Saving Time (DST) in Markham?
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 in Markham?
The month with the most rainfall in Markham, Illinois, is May, when the rain falls for 17.4 days and typically aggregates up to 4.17" (106mm) of precipitation.
When it does not snow in Markham?
In Markham, Illinois, snow does not fall in May through September.
When are the longest days in Markham?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What are the months with the highest UV index in Markham?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months in Markham?
Markham's July weather, marked by an average high temperature of 81.3°F (27.4°C) and an average low temperature of 65.8°F (18.8°C), is the warmest in the year.
What month has the most sunshine in Markham?
August has the most sunshine of the year, with an average of 10.1h of sunshine.
What is the least humid month in Markham?
October is the least humid month, with an average relative humidity of 73%.
What is the driest month in Markham?
The month with the least rainfall in Markham is December, when the rain falls for 7.9 days and typically collects 1.54" (39mm) of precipitation.
What is the month with the shortest days in Markham?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
What is the month with the lowest UV index in Markham?
With an average maximum UV index of 1, December is the month with the lowest UV index in Markham.
Average temperature
Markham, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°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 (18.9°F).
Average pressure
Markham, 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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Markham, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - 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:
7.4mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Markham, 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
Markham, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.69" - Average rainfall in March:
2.09" - Average rainfall in April:
3.43" - Average rainfall in May:
4.17" - Average rainfall in June:
3.82"
- Average rainfall in July:
3.31" - Average rainfall in August:
2.56" - Average rainfall in September:
2.48" - Average rainfall in October:
2.76" - Average rainfall in November:
1.69" - Average rainfall in December:
1.54"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days
Markham, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Markham, IL
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Markham, IL
- Average snowfall days in January:
12.6 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.9 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:
0.3 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Markham, 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 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 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Markham, IL
- Average sunshine days in January:
13 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
14 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
15 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index
Markham, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Markham, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Markham, IL
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Markham, Illinois, USA
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