Expand
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 McCook, Illinois, is another subzero cold winter month, with an average temperature varying between 28.9°F (-1.7°C) and 18.3°F (-7.6°C). January, recording an average high temperature of 28.9°F (-1.7°C) and a low temperature of 18.3°F (-7.6°C), is McCook's coldest month. Weather in January »
Weather in February
February, the last month of the winter in McCook, is a cold month, with an average temperature ranging between max 32.5°F (0.3°C) and min 20.8°F (-6.2°C). The dawn of February sees an average high-temperature of a cold 32.5°F (0.3°C), subtly contrasting with January's 28.9°F (-1.7°C). Weather in February »
Weather in March
March, the first month of the spring in McCook, is a chilly month, with an average temperature ranging between max 45.1°F (7.3°C) and min 32°F (0°C). The beginning of March signals a rise in the average high-temperature, moving from a wintry 32.5°F (0.3°C) in February to a frosty 45.1°F (7.3°C). Weather in March »
Weather in April
April in McCook, Illinois, is a refreshing spring month, with temperature in the range of an average low of 40.8°F (4.9°C) and an average high of 55.9°F (13.3°C). An escalation in the average high-temperature is seen with the onset of April, moving from a chilly 45.1°F (7.3°C) in March to a moderate 55.9°F (13.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in McCook, Illinois, with an average temperature ranging between max 67.6°F (19.8°C) and min 52°F (11.1°C). May marks a rise in the average high-temperature, moving from April's mild 55.9°F (13.3°C) to a still refreshing 67.6°F (19.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in McCook, Illinois, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 61.7°F (16.5°C). In McCook, the onset of June comes with an increased average high-temperature, moving from May's comfortable 67.6°F (19.8°C) to a warm 77.4°F (25.2°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in McCook, Illinois, with an average temperature ranging between min 66.6°F (19.2°C) and max 81.9°F (27.7°C). July, marked by an average high-temperature of 81.9°F (27.7°C) and a low-temperature of 66.6°F (19.2°C), is the warmest month. During July, the heat index is calculated to be a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in McCook, Illinois, with an average temperature fluctuating between 65.3°F (18.5°C) and 80.6°F (27°C). The arrival of August coincides with an average high-temperature of a still warm 80.6°F (27°C), indicating a minimal shift from July's 81.9°F (27.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in McCook, Illinois, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 58.6°F (14.8°C). The arrival of September corresponds with a light shift in temperature, down from 80.6°F (27°C) in August to a still warm 74.1°F (23.4°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in McCook, Illinois, with an average temperature ranging between min 46.9°F (8.3°C) and max 60.8°F (16°C). During the transition into October, McCook observes a decrease in the average high-temperature, falling from a warm 74.1°F (23.4°C) in September to an enjoyable 60.8°F (16°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in McCook, Illinois, with an average temperature ranging between max 46.2°F (7.9°C) and min 33.8°F (1°C). As McCook welcomes November, there is a noticeable shift in the average high-temperature, dropping from October's comfortable 60.8°F (16°C) to a chilly 46.2°F (7.9°C). Weather in November »
Weather in December
December, the first month of the winter in McCook, is also an icy month, with temperature in the range of an average high of 35.2°F (1.8°C) and an average low of 25.5°F (-3.6°C). The transition into December involves a decrease in the average high-temperature, falling from a chilly 46.2°F (7.9°C) in November to an icy 35.2°F (1.8°C). Weather in December »
Updated: Aug 11, 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?
Temperature readings reach their annual highs in January, averaging 28.9°F (-1.7°C) and a minimum average of 18.3°F (-7.6°C).
What are the most humid months?
January and February, with an average relative humidity of 82%, are most humid months.
How many days does it rain?
Throughout the year, there are 166.8 rainfall days, and 34.96" (888mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
How many days does it snow?
Throughout the year, there are 47.1 snowfall days, and 19.02" (483mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.7h of sunshine.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 11.8 days and accumulates 5.28" (134mm) of snow.
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?
The month with the most rainfall is May, when the rain falls for 19.2 days and typically aggregates up to 4.61" (117mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What are the warmest months?
July temperatures tend to peak at an average high of 81.9°F (27.7°C) and dip to a low of 66.6°F (19.2°C).
What is the month with the highest UV index?
July and August, with an average maximum UV index of 6, are months with the highest UV index.
What month has the most sunshine?
With an average of 10.3h of sunshine, August has the most sunshine of the year.
What is the least humid month in McCook?
October is the least humid month, with an average relative humidity of 72%.
What is the driest month?
November and December are months with the least rain when the rain falls for 10.5 days and typically aggregates up to 1.77" (45mm) of rain.
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
McCook, IL
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.9°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure
McCook, 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:
30.09"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
McCook, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.4mph
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
McCook, IL
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall
McCook, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
1.81" - Average rainfall in March:
2.09" - Average rainfall in April:
3.66" - Average rainfall in May:
4.61" - Average rainfall in June:
4.41"
- Average rainfall in July:
3.86" - Average rainfall in August:
3.46" - Average rainfall in September:
2.68" - Average rainfall in October:
2.95" - Average rainfall in November:
1.77" - Average rainfall in December:
1.77"
The wettest month (with the highest rainfall) is May (4.61").
The driest months (with the least rainfall) are November and December (1.77").
Average rainfall days
McCook, IL
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
17.6 days - Average rainfall days in May:
19.2 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
18.7 days - Average rainfall days in August:
17.4 days - Average rainfall days in September:
15 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
McCook, IL
The month with the highest snowfall is February (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
McCook, IL
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.8 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:
0.2 days - Average snowfall days in November:
3.6 days - Average snowfall days in December:
9.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
McCook, 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 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 1min - 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 5min - 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 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
McCook, IL
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
9.5 days - Average sunshine days in May:
9.5 days - Average sunshine days in June:
8.2 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
9.5 days - Average sunshine days in September:
11.9 days - Average sunshine days in October:
14 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is June (8.2 days).
Average UV index
McCook, IL
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
McCook, 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
McCook, IL
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
McCook, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location