Climate and monthly weather forecastSouth Beloit, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in South Beloit, Illinois, with an average temperature fluctuating between 25.2°F (-3.8°C) and 12.7°F (-10.7°C). January is the month that records the lowest temperatures, with averages ranging from a high of 25.2°F (-3.8°C) to a low of 12.7°F (-10.7°C). Weather in January »Weather in February
February, the last month of the winter in South Beloit, is another freezing cold month, with an average temperature varying between 16.5°F (-8.6°C) and 29.3°F (-1.5°C). South Beloit marks the onset of February with an average high-temperature of a still subzero cold 29.3°F (-1.5°C), subtly divergent from January's 25.2°F (-3.8°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in South Beloit, Illinois, with an average temperature varying between 28.8°F (-1.8°C) and 43.3°F (6.3°C). With the onset of March, South Beloit sees a temperature rise, with the average high-temperature moving from February's freezing cold 29.3°F (-1.5°C) to a chilly 43.3°F (6.3°C). Weather in March »Weather in April
April in South Beloit, Illinois, is a fresh spring month, with an average temperature varying between 38.7°F (3.7°C) and 55°F (12.8°C). South Beloit's transition into April brings a rise in the average high-temperature, moving from a frosty 43.3°F (6.3°C) in March to a cool 55°F (12.8°C). Weather in April »Weather in May
May, the last month of the spring in South Beloit, is a refreshing month, with an average temperature ranging between max 67.6°F (19.8°C) and min 49.8°F (9.9°C). The onset of May brings a rise in the average high-temperature, elevating from a cool 55°F (12.8°C) in April to a refreshing 67.6°F (19.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in South Beloit, Illinois, with temperature in the range of an average low of 58.6°F (14.8°C) and an average high of 76.6°F (24.8°C). The shift into June brings an increase in the average high-temperature, moving from a comfortable 67.6°F (19.8°C) in May to a moderately hot 76.6°F (24.8°C). Weather in June »Weather in July
July, like June, in South Beloit, Illinois, is a moderately hot summer month, with an average temperature varying between 62.4°F (16.9°C) and 79.9°F (26.6°C). July is the month when South Beloit's temperatures reach their peak, with averages of 79.9°F (26.6°C) and lows of 62.4°F (16.9°C). Weather in July »Weather in August
August, the last month of the summer in South Beloit, is another warm month, with an average temperature varying between 78.1°F (25.6°C) and 60.3°F (15.7°C). The commencement of August brings an average high-temperature of a still moderately hot 78.1°F (25.6°C), marking an inconsequential divergence from July. Weather in August »Weather in September
September, the first month of the autumn in South Beloit, is also an agreeable month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 72.3°F (22.4°C). South Beloit's September weather features a light decline in high-temperatures, reducing from a warm 78.1°F (25.6°C) in August to an agreeable 72.3°F (22.4°C). Weather in September »Weather in October
October, the same as September, in South Beloit, Illinois, is a moderate autumn month, with an average temperature ranging between max 58.8°F (14.9°C) and min 42.8°F (6°C). A shift in South Beloit's weather is observed as September turns into October, with the average high temperature reducing from an agreeable 72.3°F (22.4°C) to a mild 58.8°F (14.9°C). Weather in October »Weather in November
November, the last month of the autumn in South Beloit, is another chilly month, with an average temperature ranging between min 31.1°F (-0.5°C) and max 43.7°F (6.5°C). November's arrival sees a clear drop in the average high-temperature, decreasing from October's mild 58.8°F (14.9°C) to a frosty 43.7°F (6.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in South Beloit, Illinois, with an average temperature ranging between min 21.7°F (-5.7°C) and max 32.4°F (0.2°C). South Beloit's average high-temperature decreases in December, falling from a chilly 43.7°F (6.5°C) in November to a cold 32.4°F (0.2°C). Weather in December »Updated: Aug 23, 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
January, characterized by an average high temperature of 25.2°F (-3.8°C) and a low temperature of 12.7°F (-10.7°C), is generally the coldest month.
With an average relative humidity of 87%, January is the most humid month.
Throughout the year, there are 122.2 rainfall days, and 16.42" (417mm) of precipitation is accumulated.
Months with snowfall are January through April, October through December.
The month with the most snowfall in South Beloit, Illinois, is January, when snow falls for 11.5 days and typically aggregates up to 2.52" (64mm) of snow.
Throughout the year, there are 41.2 snowfall days, and 8.78" (223mm) of snow is accumulated.
The months with the least sunshine are January and February, with an average of 3.5h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
February and December are months with the least rain in South Beloit when the rain falls for 3.5 days and typically aggregates up to 0.67" (17mm) 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.
The months with the lowest humidity are April and October, with an average relative humidity of 76%.
May through September are months without snowfall.
The month with the most rainfall is June, when the rain falls for 15.3 days and typically aggregates up to 2.28" (58mm) of precipitation.
June has the longest days of the year, with an average of 15h and 12min of daylight.
June is the month with the highest UV index, with an average maximum UV index of 6.
With average temperatures fluctuating between a high of 79.9°F (26.6°C) and a low of 62.4°F (16.9°C), July stands out as the warmest month.
July and August, with an average of 9.5h of sunshine, are months with the most sunshine in South Beloit.
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
South Beloit, 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 (25.2°F).
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure
South Beloit, 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:
29.91"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 month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
South Beloit, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.5mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.4mph - 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 (6.4mph).
Average humidity
South Beloit, IL
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall
South Beloit, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
0.67" - Average rainfall in March:
0.87" - Average rainfall in April:
1.73" - Average rainfall in May:
2.13" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.09" - Average rainfall in August:
1.69" - Average rainfall in September:
1.22" - Average rainfall in October:
1.46" - Average rainfall in November:
0.87" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is June (2.28").
The driest months (with the least rainfall) are February and December (0.67").
Average rainfall days
South Beloit, IL
- Average rainfall days in January:
3.1 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
15.1 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
10.7 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
5.5 days
The months with the highest number of rainy days are May and June (15.3 days).
The month with the least rainy days is January (3.1 days).
Average snowfall
South Beloit, IL
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
South Beloit, IL
- Average snowfall days in January:
11.5 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
2.1 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:
3.8 days - Average snowfall days in December:
8.5 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
South Beloit, 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 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
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 30min - Average sunshine in February:
3h and 30min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 12min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
9h and 30min - Average sunshine in August:
9h and 30min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 12min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 48min
The months with the most sunshine are July and August (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days
South Beloit, IL
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
17.1 days - Average sunshine days in April:
14.2 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
13.9 days - Average sunshine days in September:
17 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19 days - Average sunshine days in December:
17.8 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (12.8 days).
Average UV index
South Beloit, 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
South Beloit, IL
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility
South Beloit, IL
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
