Climate and monthly weather forecastBonnie, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Bonnie, Illinois, with an average temperature fluctuating between 24.8°F (-4°C) and 37.9°F (3.3°C). January, having an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 24.8°F (-4°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Bonnie, is also a wintry month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 42.4°F (5.8°C). Transitioning into February, Bonnie experiences an average high-temperature of a still wintry 42.4°F (5.8°C), marking a minor shift from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Bonnie, Illinois, with an average temperature ranging between max 54.3°F (12.4°C) and min 38.3°F (3.5°C). March marks a rise in the average high-temperature, moving from February's icy 42.4°F (5.8°C) to a fresh 54.3°F (12.4°C). Weather in March »Weather in April
April is a comfortable spring month in Bonnie, Illinois, with an average temperature fluctuating between 65.1°F (18.4°C) and 47.8°F (8.8°C). With the onset of April, Bonnie's average high-temperature experiences a rise, moving from March's fresh 54.3°F (12.4°C) to an enjoyable 65.1°F (18.4°C). Weather in April »Weather in May
May, the last month of the spring in Bonnie, is a warm month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 74.8°F (23.8°C). The shift into May is marked by a rise in the average high-temperature, moving from April's comfortable 65.1°F (18.4°C) to a warm 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Bonnie, is also a moderately hot month, with an average temperature fluctuating between 66.6°F (19.2°C) and 83.5°F (28.6°C). June's arrival brings a modest temperature shift, moving from 74.8°F (23.8°C) in May to a still warm 83.5°F (28.6°C). Weather in June »Weather in July
July, like June, in Bonnie, Illinois, is another warm summer month, with an average temperature varying between 85.6°F (29.8°C) and 67.8°F (19.9°C). July is the month when Bonnie sees the highest average temperatures, with a high of 85.6°F (29.8°C) and a low of 67.8°F (19.9°C). In July, the heat index is estimated at a very hot 98.6°F (37°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Bonnie, Illinois, with an average temperature ranging between min 65.8°F (18.8°C) and max 84°F (28.9°C). The commencement of August brings an average high-temperature of a still warm 84°F (28.9°C), marking an inconsequential divergence from July. Weather in August »Weather in September
September, the first month of the autumn in Bonnie, is still a warm month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 79°F (26.1°C). Bonnie signifies an average high-temperature of a still moderately hot 79°F (26.1°C) in September, closely mirroring the 84°F (28.9°C) of August. Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Bonnie, Illinois, with an average temperature varying between 49.1°F (9.5°C) and 66.4°F (19.1°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's moderately hot 79°F (26.1°C) to a refreshing 66.4°F (19.1°C). Weather in October »Weather in November
November, the last month of the autumn in Bonnie, is another cool month, with an average temperature fluctuating between 52.7°F (11.5°C) and 37.9°F (3.3°C). The shift from October to November involves a decrease in the average high-temperature, from a comfortable 66.4°F (19.1°C) to a fresh 52.7°F (11.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Bonnie, Illinois, with an average temperature fluctuating between 43.2°F (6.2°C) and 30.9°F (-0.6°C). December brings a decrease in the average high-temperature, falling from November's fresh 52.7°F (11.5°C) to a chilly 43.2°F (6.2°C). Weather in December »Updated: Aug 3, 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
Bonnie experiences its average lowest temperatures in January, reaching a peak of 37.9°F (3.3°C) and a minimum of 24.8°F (-4°C).
Throughout the year, in Bonnie, there are 145.8 rainfall days, and 29.13" (740mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
In Bonnie, during the entire year, snow falls for 15.4 days and aggregates up to 5.87" (149mm) of snow.
January has the least sunshine of the year, with an average of 4.5h of sunshine.
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall. Snow falls for 4.5 days and accumulates 1.73" (44mm) of snow.
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 month with the most rainfall is April, when the rain falls for 14.7 days and typically aggregates up to 3.78" (96mm) of precipitation.
The most humid month is May, with an average relative humidity of 80%.
In Bonnie, snow does not fall in May through October.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June has the longest days of the year, with an average of 14h and 48min of daylight.
June has the most sunshine of the year, with an average of 10.5h of sunshine.
With average high and low temperatures of 85.6°F (29.8°C) and 67.8°F (19.9°C) respectively, July is Bonnie's warmest month.
The month with the least rainfall is September, when the rain falls for 11.6 days and typically collects 1.61" (41mm) of precipitation.
The least humid month is October, with an average relative humidity of 71%.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Bonnie, IL
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Bonnie, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Bonnie, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).
Average humidity
Bonnie, IL
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Bonnie, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.77" - Average rainfall in March:
2.6" - Average rainfall in April:
3.78" - Average rainfall in May:
3.23" - Average rainfall in June:
3.11"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.36" - Average rainfall in September:
1.61" - Average rainfall in October:
2.09" - Average rainfall in November:
2.05" - Average rainfall in December:
2.01"
The wettest month (with the highest rainfall) is April (3.78").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days
Bonnie, IL
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
17 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (7.5 days).
Average snowfall
Bonnie, IL
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Bonnie, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.5 days - Average snowfall days in March:
1.8 days - Average snowfall days in April:
0.3 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 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
2.9 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Bonnie, IL
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Bonnie, IL
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
15.6 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.3 days).
Average UV index
Bonnie, IL
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover
Bonnie, IL
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
Bonnie, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
