Climate and monthly weather forecastMacomb, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Macomb, Illinois, is another subzero cold winter month, with an average temperature varying between 19°F (-7.2°C) and 30.9°F (-0.6°C). January, on average, is the coldest month, registering a high temperature of 30.9°F (-0.6°C) and a low of 19°F (-7.2°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Macomb, Illinois, with an average temperature fluctuating between 22.5°F (-5.3°C) and 36°F (2.2°C). With February's arrival, Macomb's weather records an average high-temperature of an icy 36°F (2.2°C), marking little difference from January's 30.9°F (-0.6°C). Weather in February »Weather in March
March, the first month of the spring in Macomb, is a frosty month, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 34.3°F (1.3°C). The rise of average high-temperatures is seen in March, with an increase from an icy 36°F (2.2°C) in February to a frosty 49.6°F (9.8°C). Weather in March »Weather in April
April is a comfortable spring month in Macomb, Illinois, with an average temperature fluctuating between 61.3°F (16.3°C) and 44.2°F (6.8°C). April's arrival signals a temperature shift, moving from a chilly 49.6°F (9.8°C) in March to a comfortable 61.3°F (16.3°C). Weather in April »Weather in May
May, the last month of the spring in Macomb, is a pleasant month, with an average temperature fluctuating between 54.9°F (12.7°C) and 71.6°F (22°C). May sees a rise in the average high-temperature, climbing from an enjoyable 61.3°F (16.3°C) in April to a pleasant 71.6°F (22°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Macomb, Illinois, with an average temperature ranging between max 80.2°F (26.8°C) and min 63.7°F (17.6°C). Macomb's transition into June is noticed by a slight rise in the average high-temperature, advancing from an agreeable 71.6°F (22°C) in May to a warm 80.2°F (26.8°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Macomb, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 82.4°F (28°C). In Macomb, the month of July registers the highest temperatures, averaging 82.4°F (28°C) at the peak and 65.8°F (18.8°C) at the lowest. The heat index value during July is estimated at a tropical 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Macomb, Illinois, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 81.9°F (27.7°C). As Macomb, Illinois, steps into August, the average high-temperature holds at a still warm 81.9°F (27.7°C), hinting at a minor fluctuation from the prior month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Macomb, Illinois, with an average temperature fluctuating between 57.6°F (14.2°C) and 76.8°F (24.9°C). September's weather displays an average high-temperature of a still moderately hot 76.8°F (24.9°C), slightly varied from August's 81.9°F (27.7°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Macomb, Illinois, with an average temperature fluctuating between 63°F (17.2°C) and 45.9°F (7.7°C). In Macomb, the beginning of October is marked by a lowered average high-temperature, shifting from September's warm 76.8°F (24.9°C) to a refreshing 63°F (17.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Macomb, Illinois, with an average temperature fluctuating between 34.7°F (1.5°C) and 48.9°F (9.4°C). With November's arrival, Macomb's weather changes as the average high-temperature falls from a comfortable 63°F (17.2°C) in October to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
December, the first month of the winter in Macomb, is also an icy month, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 37°F (2.8°C). The shift from November to December involves a decrease in the average high-temperature, from a chilly 48.9°F (9.4°C) to a cold 37°F (2.8°C). Weather in December »Updated: Jul 18, 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
The coldest period is January, when temperatures fluctuate between an average high of 30.9°F (-0.6°C) and a low of 19°F (-7.2°C).
The month with the least rainfall is January, when the rain falls for 4.2 days and typically collects 0.67" (17mm) of precipitation.
Throughout the year, there are 122.7 rainfall days, and 17.8" (452mm) of precipitation is accumulated.
Months with snowfall are January through April, October through December.
The month with the most snowfall is January, when snow falls for 7.6 days and typically aggregates up to 1.89" (48mm) of snow.
Throughout the year, there are 25.2 snowfall days, and 5.47" (139mm) of snow is accumulated.
With an average of 4.1h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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.
May is the month with the most rainfall in Macomb. Rain falls for 16.2 days and accumulates 2.56" (65mm) of precipitation.
May through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 0min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Macomb's warmest month, July, generally records average temperatures ranging from a high of 82.4°F (28°C) to a low of 65.8°F (18.8°C).
The most humid month is July, with an average relative humidity of 83%.
The month with the most sunshine is July, with an average of 10.1h of sunshine.
With an average relative humidity of 71%, October is the least humid month.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Macomb, IL
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (30.9°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 (19°F).
Average pressure
Macomb, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Macomb, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity
Macomb, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Macomb, IL
- Average rainfall in January:
0.67" - Average rainfall in February:
0.79" - Average rainfall in March:
1.38" - Average rainfall in April:
1.93" - Average rainfall in May:
2.56" - Average rainfall in June:
2.09"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.42" - Average rainfall in September:
1.85" - Average rainfall in October:
1.5" - Average rainfall in November:
1.14" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days
Macomb, IL
- Average rainfall days in January:
4.2 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
14.6 days - Average rainfall days in August:
11.1 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
5.6 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).
Average snowfall
Macomb, IL
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Macomb, IL
- Average snowfall days in January:
7.6 days - Average snowfall days in February:
6.9 days - Average snowfall days in March:
3.4 days - Average snowfall days in April:
0.8 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:
1.4 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Macomb, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Macomb, IL
- Average sunshine days in January:
19.8 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).
Average UV index
Macomb, IL
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Macomb, IL
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
Macomb, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
