Climate and monthly weather forecastMettawa, IL
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Mettawa, Illinois, with an average temperature varying between 27.9°F (-2.3°C) and 16.5°F (-8.6°C). With average high temperatures of 27.9°F (-2.3°C) and lows of 16.5°F (-8.6°C), January is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Mettawa, is also a subzero cold month, with an average temperature varying between 31.3°F (-0.4°C) and 19.2°F (-7.1°C). The initiation of February sees an average high-temperature of a still freezing cold 31.3°F (-0.4°C), showing minor variations from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Mettawa, Illinois, with an average temperature fluctuating between 43.2°F (6.2°C) and 30.4°F (-0.9°C). As March arrives, Mettawa's weather shows an increase in high-temperatures, moving from February's subzero cold 31.3°F (-0.4°C) to a frosty 43.2°F (6.2°C). Weather in March »Weather in April
April is a fresh spring month in Mettawa, Illinois, with an average temperature ranging between min 39°F (3.9°C) and max 54.1°F (12.3°C). April sees a rise in the average high-temperature, climbing from a chilly 43.2°F (6.2°C) in March to a cool 54.1°F (12.3°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Mettawa, Illinois, with an average temperature ranging between max 65.8°F (18.8°C) and min 50°F (10°C). Mettawa's May weather shows an increase in high-temperatures, moving from April's fresh 54.1°F (12.3°C) to a comfortable 65.8°F (18.8°C). Weather in May »Weather in June
June, the first month of the summer in Mettawa, is a warm month, with an average temperature varying between 59°F (15°C) and 75.6°F (24.2°C). As May transitions into June, Mettawa sees a rise in the average high-temperature, moving from a comfortable 65.8°F (18.8°C) to a moderately hot 75.6°F (24.2°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Mettawa, Illinois, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 64.9°F (18.3°C). July, with an average high of 80.4°F (26.9°C) and a low of 64.9°F (18.3°C), signifies the warmest month of the year. Weather in July »Weather in August
August, the last month of the summer in Mettawa, is also a moderately hot month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 63.7°F (17.6°C). Mettawa's shift into August is marked by a subtle change to a still moderately hot 79.3°F (26.3°C) from July's 80.4°F (26.9°C) in temperature. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Mettawa, Illinois, with an average temperature fluctuating between 72.9°F (22.7°C) and 57.4°F (14.1°C). The transition into September subtly indicates a reduction in the average high-temperature, down to an agreeable 72.9°F (22.7°C) from August's moderately hot 79.3°F (26.3°C). Weather in September »Weather in October
October, the same as September, in Mettawa, Illinois, is a moderate autumn month, with an average temperature ranging between min 45.5°F (7.5°C) and max 59.2°F (15.1°C). The onset of October comes with a shift in the average high-temperature, falling from a pleasant 72.9°F (22.7°C) in September to a refreshing 59.2°F (15.1°C). Weather in October »Weather in November
November, the last month of the autumn in Mettawa, is also a frosty month, with an average temperature ranging between max 45.3°F (7.4°C) and min 33.3°F (0.7°C). November indicates a shift in the average high-temperature, from October's refreshing 59.2°F (15.1°C) to a chilly 45.3°F (7.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Mettawa, Illinois, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 33.6°F (0.9°C). With the onset of December, Mettawa experiences a modest temperature adjustment, with the average high-temperature receding from a chilly 45.3°F (7.4°C) in November to a cold 33.6°F (0.9°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
Temperature readings in Mettawa reach their annual highs in January, averaging 27.9°F (-2.3°C) and a minimum average of 16.5°F (-8.6°C).
January and February, with an average relative humidity of 83%, are most humid months.
Throughout the year, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
Throughout the year, in Mettawa, there are 48.2 snowfall days, and 18.86" (479mm) of snow is accumulated.
January has the least sunshine of the year in Mettawa, Illinois, with an average of 3.7h of sunshine.
The month with the most snowfall in Mettawa, Illinois, is February, when snow falls for 11 days and typically aggregates up to 5.55" (141mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mettawa, Illinois, 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.
June is the month with the most rainfall. Rain falls for 17.2 days and accumulates 3.54" (90mm) of precipitation.
June through September are months without snowfall in Mettawa.
With an average of 15h and 12min of daylight, June has the longest days of the year in Mettawa.
The average temperatures in Mettawa, Illinois, reach their apex in July, averaging 80.4°F (26.9°C) at the high end and 64.9°F (18.3°C) at the low end.
The months with the most sunshine in Mettawa, Illinois, are July and August, with an average of 10.1h of sunshine.
The months with the highest UV index are July and August, with an average maximum UV index of 6.
October is the least humid month in Mettawa, with an average relative humidity of 74%.
The months with the least rainfall are November and December Rain falls for 7.8 days and accumulates 1.3" (33mm) of rain.
The month with the shortest days in Mettawa, Illinois, is December, with an average of 9h and 12min of daylight.
December is the month with the lowest UV index in Mettawa, with an average maximum UV index of 1.
Average temperature
Mettawa, IL
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure
Mettawa, IL
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"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 (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Mettawa, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.6mph - 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:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Mettawa, IL
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Mettawa, IL
- Average rainfall in January:
1.34" - Average rainfall in February:
1.61" - Average rainfall in March:
1.65" - Average rainfall in April:
3.19" - Average rainfall in May:
3.31" - Average rainfall in June:
3.54"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days
Mettawa, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
16.2 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
17.2 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall
Mettawa, IL
- Average snowfall in January:
4.65" - Average snowfall in February:
5.55" - Average snowfall in March:
1.34" - Average snowfall in April:
2.28" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mettawa, IL
- Average snowfall days in January:
12.9 days - Average snowfall days in February:
11 days - Average snowfall days in March:
6.4 days - Average snowfall days in April:
2.5 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:
0.6 days - Average snowfall days in November:
4.2 days - Average snowfall days in December:
10.4 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mettawa, IL
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
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 42min - Average sunshine in February:
3h and 48min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 6min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Mettawa, IL
- Average sunshine days in January:
13 days - Average sunshine days in February:
12.2 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
10.9 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index
Mettawa, 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
Mettawa, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility
Mettawa, 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).
