Expand
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, the same as December, in Tonica, Illinois, is another subzero cold winter month, with an average temperature ranging between min 16.9°F (-8.4°C) and max 28.9°F (-1.7°C). January, with its average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Tonica, Illinois, with an average temperature ranging between min 20.5°F (-6.4°C) and max 33.4°F (0.8°C). As January transitions into February, the average high-temperature rests at a wintry 33.4°F (0.8°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Tonica, is a chilly month, with an average temperature ranging between min 32.4°F (0.2°C) and max 46.8°F (8.2°C). March indicates a change in the average high-temperature, moving up from an icy 33.4°F (0.8°C) in February to a chilly 46.8°F (8.2°C). Weather in March »
Weather in April
April in Tonica, Illinois, is a mild spring month, with an average temperature fluctuating between 42.4°F (5.8°C) and 58.8°F (14.9°C). The arrival of April signals an increase in the average high-temperature, moving from a frosty 46.8°F (8.2°C) in March to a moderate 58.8°F (14.9°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Tonica, Illinois, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 70.5°F (21.4°C). Tonica's weather shows a temperature rise with the arrival of May, moving from a refreshing 58.8°F (14.9°C) in April to an agreeable 70.5°F (21.4°C). Weather in May »
Weather in June
June, the first month of the summer in Tonica, is a warm month, with an average temperature ranging between max 78.8°F (26°C) and min 61.5°F (16.4°C). June's arrival signals a subtle increase in average high-temperatures, moving from May's pleasant 70.5°F (21.4°C) to a warm 78.8°F (26°C). Weather in June »
Weather in July
July, like June, in Tonica, Illinois, is another warm summer month, with an average temperature fluctuating between 64.2°F (17.9°C) and 80.6°F (27°C). July is the warmest month, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 64.2°F (17.9°C). The heat index value during July is evaluated at a hot 86°F (30°C). Weather in July »
Weather in August
August, the last month of the summer in Tonica, is another warm month, with an average temperature varying between 62.1°F (16.7°C) and 79.5°F (26.4°C). Tonica transitions into August recording an average high-temperature of a still moderately hot 79.5°F (26.4°C), closely aligning with the preceding month's temperature. Weather in August »
Weather in September
September, the first month of the autumn in Tonica, is also a moderately hot month, with an average temperature varying between 74.5°F (23.6°C) and 56.1°F (13.4°C). September experiences an average high-temperature of a still moderately hot 74.5°F (23.6°C), barely different from August's 79.5°F (26.4°C). Weather in September »
Weather in October
October, like September, in Tonica, Illinois, is another refreshing autumn month, with an average temperature fluctuating between 61.7°F (16.5°C) and 45.7°F (7.6°C). The shift from September to October involves a decrease in the average high-temperature, from a warm 74.5°F (23.6°C) to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Tonica, Illinois, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 46.8°F (8.2°C). November's onset brings a clear reduction in the average high-temperature, falling from an enjoyable 61.7°F (16.5°C) in October to a frosty 46.8°F (8.2°C). Weather in November »
Weather in December
December, the first month of the winter in Tonica, is also an icy month, with an average temperature ranging between max 34.9°F (1.6°C) and min 24.6°F (-4.1°C). Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 46.8°F (8.2°C) to a wintry 34.9°F (1.6°C). Weather in December »
Updated: Aug 8, 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
What is the coldest month?
Tonica's temperature records reveal January as the coldest month, marked by average highs of 28.9°F (-1.7°C) and lows of 16.9°F (-8.4°C).
How much does it rain?
Throughout the year, there are 151.4 rainfall days, and 30.67" (779mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, October through December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 12.1 days and typically aggregates up to 4.37" (111mm) of snow.
How many days does it snow?
In Tonica, during the entire year, snow falls for 40.5 days and aggregates up to 15.16" (385mm) of snow.
What is the month with the least sunshine?
With an average of 3.9h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Tonica.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 6.1 days and typically collects 1.57" (40mm) of precipitation.
When is Daylight Saving Time (DST)?
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.
What is the rainiest month?
May is the month with the most rainfall in Tonica. Rain falls for 18.5 days and accumulates 4.65" (118mm) of precipitation.
When it does not snow?
In Tonica, snow does not fall in May through September.
When are the longest days in Tonica?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 9.8h of sunshine.
When is the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month?
In Tonica, July registers the highest temperatures, averaging 80.6°F (27°C) at the peak and 64.2°F (17.9°C) at the lowest.
What is the most humid month?
July is the most humid month in Tonica, with an average relative humidity of 85%.
What is the least humid month?
October is the least humid month, with an average relative humidity of 72%.
What is the month with the shortest days in Tonica?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Tonica, IL
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.9°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure
Tonica, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"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 (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Tonica, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.4mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Tonica, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Tonica, IL
- Average rainfall in January:
1.65" - Average rainfall in February:
1.57" - Average rainfall in March:
2.13" - Average rainfall in April:
3.78" - Average rainfall in May:
4.65" - Average rainfall in June:
3.31"
- Average rainfall in July:
2.8" - Average rainfall in August:
2.28" - Average rainfall in September:
2.28" - Average rainfall in October:
2.83" - Average rainfall in November:
1.77" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days
Tonica, IL
- Average rainfall days in January:
5.5 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
16.7 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
15 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
10.1 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (5.5 days).
Average snowfall
Tonica, IL
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Tonica, IL
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.8 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:
0.4 days - Average snowfall days in November:
3.1 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Tonica, IL
- Average daylight in January:
9h and 4min - 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 3min - 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 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Tonica, IL
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
12.9 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
16.3 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Tonica, 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
Tonica, IL
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Tonica, 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).
Tonica, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location