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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, like December, is another subzero cold winter month in Roscoe, Illinois, with an average temperature fluctuating between 25.5°F (-3.6°C) and 13.5°F (-10.3°C). Roscoe's January weather reaches an average high of 25.5°F (-3.6°C) and an average low of 13.5°F (-10.3°C), making it the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Roscoe, Illinois, with an average temperature fluctuating between 29.7°F (-1.3°C) and 16.9°F (-8.4°C). The arrival of February brings an average high-temperature of a still freezing cold 29.7°F (-1.3°C), closely following the temperature pattern of January. Weather in February »
Weather in March
March, the first month of the spring in Roscoe, is a frosty month, with an average temperature fluctuating between 43.9°F (6.6°C) and 28.9°F (-1.7°C). A shift in the average high-temperature is noticeable in March, changing from a freezing cold 29.7°F (-1.3°C) in February to a chilly 43.9°F (6.6°C). Weather in March »
Weather in April
April in Roscoe, Illinois, is a moderate spring month, with an average temperature ranging between min 39°F (3.9°C) and max 55.6°F (13.1°C). With the transition into April, Roscoe experiences an increase in average high-temperatures, moving up from a frosty 43.9°F (6.6°C) in March to a moderate 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Roscoe, Illinois, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 68°F (20°C). Roscoe's transition into May is marked by a rise in the average high-temperature, advancing from a mild 55.6°F (13.1°C) in April to a pleasant 68°F (20°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Roscoe, Illinois, with an average temperature ranging between min 59.5°F (15.3°C) and max 76.6°F (24.8°C). In Roscoe, the onset of June comes with a modest high-temperature shift, transitioning from May's pleasant 68°F (20°C) to a warm 76.6°F (24.8°C). Weather in June »
Weather in July
July, like June, in Roscoe, Illinois, is another warm summer month, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 63°F (17.2°C). In Roscoe, the highest average temperatures are observed in July, with a high of 79.9°F (26.6°C) and a low of 63°F (17.2°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Roscoe, Illinois, with an average temperature ranging between max 78.1°F (25.6°C) and min 60.4°F (15.8°C). August's arrival brings an average high-temperature of a still moderately hot 78.1°F (25.6°C), demonstrating subtle variation from the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Roscoe, Illinois, with an average temperature fluctuating between 72.3°F (22.4°C) and 53.8°F (12.1°C). September sees a slight reduction in average high-temperature, with a shift from a warm 78.1°F (25.6°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Roscoe, Illinois, with an average temperature fluctuating between 59°F (15°C) and 43.3°F (6.3°C). Roscoe's progression into October includes a drop in the average high-temperature, from a pleasant 72.3°F (22.4°C) in September to a refreshing 59°F (15°C). Weather in October »
Weather in November
November, the last month of the autumn in Roscoe, is another chilly month, with an average temperature varying between 30.9°F (-0.6°C) and 44.1°F (6.7°C). The drop of average high-temperatures is noticeable in November, with a decrease from a mild 59°F (15°C) in October to a chilly 44.1°F (6.7°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Roscoe, Illinois, with an average temperature ranging between max 32.4°F (0.2°C) and min 21.9°F (-5.6°C). As November transitions to December, the average high-temperature falls from a frosty 44.1°F (6.7°C) to a wintry 32.4°F (0.2°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Roscoe?
Roscoe reaches its average lowest temperatures in January, measuring 25.5°F (-3.6°C) at the peak and 13.5°F (-10.3°C) at the lowest.
What is the most humid month in Roscoe?
January is the most humid month, with an average relative humidity of 86%.
How much does it rain in Roscoe?
Throughout the year, in Roscoe, there are 123.8 rainfall days, and 14.49" (368mm) of precipitation is accumulated.
When does it snow in Roscoe?
Months with snowfall are January through April, October through December.
What is the snowiest month in Roscoe?
The month with the most snowfall in Roscoe, Illinois, is January, when snow falls for 10.3 days and typically aggregates up to 1.93" (49mm) of snow.
How much does it snow in Roscoe?
In Roscoe, during the entire year, snow falls for 38.3 days and aggregates up to 6.57" (167mm) of snow.
What is the month with the least sunshine in Roscoe?
January and February, with an average of 3.6h of sunshine, are months with the least sunshine in Roscoe.
What are the months with the lowest UV index in Roscoe?
The months with the lowest UV index in Roscoe, Illinois, are January and December, with an average maximum UV index of 1.
What is the driest month in Roscoe?
February is the month with the least rainfall. Rain falls for 4.4 days and accumulates 0.51" (13mm) of precipitation.
When is Daylight Saving Time (DST) in Roscoe?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Roscoe, 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.
When it does not snow in Roscoe?
May through September are months without snowfall.
What is the rainiest month in Roscoe?
June is the month with the most rainfall in Roscoe. Rain falls for 16.3 days and accumulates 2.2" (56mm) of precipitation.
When are the longest days in Roscoe?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What is the month with the highest UV index in Roscoe?
The month with the highest UV index is June, with an average maximum UV index of 6.
What time of the year is the hottest in Roscoe?
In Roscoe, July records the average highest temperatures, peaking at 79.9°F (26.6°C) and reaching a low of 63°F (17.2°C).
What month has the most sunshine in Roscoe?
July has the most sunshine of the year in Roscoe, with an average of 9.7h of sunshine.
What is the least humid month in Roscoe?
The least humid month is October, with an average relative humidity of 75%.
What is the month with the shortest days in Roscoe?
December has the shortest days of the year in Roscoe, Illinois, with an average of 9h and 6min of daylight.
Average temperature
Roscoe, IL
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.5°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Roscoe, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.11"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:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"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 months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Roscoe, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity
Roscoe, IL
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Roscoe, IL
- Average rainfall in January:
0.59" - Average rainfall in February:
0.51" - Average rainfall in March:
0.79" - Average rainfall in April:
1.38" - Average rainfall in May:
2.09" - Average rainfall in June:
2.2"
The wettest month (with the highest rainfall) is June (2.2").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days
Roscoe, IL
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
12.9 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
10.1 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
5.3 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (3.8 days).
Average snowfall
Roscoe, IL
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Roscoe, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
5.9 days - Average snowfall days in April:
1.3 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:
0.5 days - Average snowfall days in November:
3 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Roscoe, IL
- Average daylight in January:
9h and 3min - 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 0min - 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 6min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days
Roscoe, IL
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
18 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.4 days).
Average UV index
Roscoe, IL
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Roscoe, IL
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility
Roscoe, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Roscoe, Illinois, USA
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