Climate and monthly weather forecastManhattan, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Manhattan, Illinois, with an average temperature varying between 17.4°F (-8.1°C) and 29.3°F (-1.5°C). Manhattan's coldest weather arrives in January, when temperatures average a high of 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C). Weather in January »Weather in February
The last month of the winter, February, is a cold month in Manhattan, Illinois, with an average temperature ranging between min 20.7°F (-6.3°C) and max 33.1°F (0.6°C). The advent of February denotes an average high-temperature of an icy 33.1°F (0.6°C), subtly different from January's 29.3°F (-1.5°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Manhattan, Illinois, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 46.2°F (7.9°C). March marks a rise in the average high-temperature, moving from February's wintry 33.1°F (0.6°C) to a chilly 46.2°F (7.9°C). Weather in March »Weather in April
April is a refreshing spring month in Manhattan, Illinois, with an average temperature varying between 57.9°F (14.4°C) and 41.7°F (5.4°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a frosty 46.2°F (7.9°C) to a moderate 57.9°F (14.4°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Manhattan, Illinois, with an average temperature varying between 52.5°F (11.4°C) and 70°F (21.1°C). As Manhattan welcomes May, the average high-temperature sees a rise, transitioning from a refreshing 57.9°F (14.4°C) in April to an agreeable 70°F (21.1°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Manhattan, Illinois, with an average temperature fluctuating between 78.8°F (26°C) and 61.3°F (16.3°C). With the transition into June, Manhattan experiences a subtle uplift in average high-temperatures, adjusting from a pleasant 70°F (21.1°C) in May to a warm 78.8°F (26°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Manhattan, Illinois, with an average temperature fluctuating between 81.7°F (27.6°C) and 64.9°F (18.3°C). July temperatures tend to peak at an average high of 81.7°F (27.6°C) and dip to a low of 64.9°F (18.3°C). In July, the heat index is evaluated at a tropical 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 Manhattan, Illinois, with an average temperature fluctuating between 80.2°F (26.8°C) and 63.3°F (17.4°C). The average high-temperature in August, at a still warm 80.2°F (26.8°C), reveals a modest deviation from July's 81.7°F (27.6°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Manhattan, Illinois, with an average temperature fluctuating between 74.3°F (23.5°C) and 57°F (13.9°C). Manhattan records a mild change in average high-temperature during September, easing from 80.2°F (26.8°C) in August to a still moderately hot 74.3°F (23.5°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Manhattan, Illinois, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 61.2°F (16.2°C). The commencement of October indicates a shift in the average high-temperature, receding from September's warm 74.3°F (23.5°C) to a comfortable 61.2°F (16.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Manhattan, Illinois, with an average temperature ranging between max 46.9°F (8.3°C) and min 33.6°F (0.9°C). November's arrival comes with a decrease in the average high-temperature, moving from a refreshing 61.2°F (16.2°C) in October to a frosty 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Manhattan, Illinois, with an average temperature varying between 25°F (-3.9°C) and 35.1°F (1.7°C). December involves a decrease in temperature, down from a frosty 46.9°F (8.3°C) in November to an icy 35.1°F (1.7°C). Weather in December »Updated: Jun 19, 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 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C).
Throughout the year, there are 149.8 rainfall days, and 31.26" (794mm) 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 12.3 days and typically aggregates up to 4.53" (115mm) of snow.
In Manhattan, Illinois, during the entire year, snow falls for 42.2 days and aggregates up to 14.65" (372mm) of snow.
January has the least sunshine of the year, with an average of 3.6h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Manhattan.
With an average relative humidity of 83%, February is the most humid month in Manhattan, Illinois.
February and December are months with the least rain when the rain falls for 5.3 days and typically aggregates up to 1.61" (41mm) of rain.
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. Rain falls for 16.4 days and accumulates 4.21" (107mm) of precipitation.
In Manhattan, Illinois, snow does not fall in May through September.
The month with the longest days is June, with an average of 15h and 6min of daylight.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
With average temperatures fluctuating between a high of 81.7°F (27.6°C) and a low of 64.9°F (18.3°C), July stands out as the warmest month.
With an average of 9.6h of sunshine, August has the most sunshine of the year.
The least humid month is October, with an average relative humidity of 73%.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Manhattan, IL
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (29.3°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 (17.4°F).
Average pressure
Manhattan, 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
Manhattan, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.6mph - 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 month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Manhattan, IL
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Manhattan, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.61" - Average rainfall in March:
2.05" - Average rainfall in April:
3.27" - Average rainfall in May:
4.21" - Average rainfall in June:
3.86"
- Average rainfall in July:
3.23" - Average rainfall in August:
2.6" - Average rainfall in September:
2.52" - Average rainfall in October:
2.87" - Average rainfall in November:
1.65" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is May (4.21").
The driest months (with the least rainfall) are February and December (1.61").
Average rainfall days
Manhattan, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
17.1 days - Average rainfall days in May:
16.4 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
7.6 days
The months with the highest number of rainy days are June and July (17.3 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Manhattan, 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
Manhattan, IL
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.5 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:
0.1 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Manhattan, IL
- Average daylight in January:
9h and 36min - 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 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - 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 54min - Average daylight in December:
9h and 12min
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 36min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 24min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 18min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Manhattan, IL
- Average sunshine days in January:
14.1 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
10.7 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
15 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (10.7 days).
Average UV index
Manhattan, 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
Manhattan, IL
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Manhattan, IL
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
