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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, the same as December, is a wintry winter month in Grand Chain, Illinois, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 40.1°F (4.5°C). The lowest temperatures are recorded in January, with averages reaching a high of 40.1°F (4.5°C) and a low of 27°F (-2.8°C). Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Grand Chain, Illinois, with temperature in the range of an average low of 30.7°F (-0.7°C) and an average high of 45.1°F (7.3°C). Grand Chain observes an average high-temperature of a chilly 45.1°F (7.3°C) in February, barely different from 40.1°F (4.5°C) in January. Weather in February »
Weather in March
The first month of the spring, March, is a mild month in Grand Chain, Illinois, with an average temperature fluctuating between 55.8°F (13.2°C) and 39.7°F (4.3°C). March marks a rise in the average high-temperature, moving from February's frosty 45.1°F (7.3°C) to a mild 55.8°F (13.2°C). Weather in March »
Weather in April
April is an enjoyable spring month in Grand Chain, Illinois, with an average temperature varying between 48.9°F (9.4°C) and 66.6°F (19.2°C). The arrival of April signals an increase in the average high-temperature, moving from a mild 55.8°F (13.2°C) in March to a comfortable 66.6°F (19.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Grand Chain, Illinois, with an average temperature varying between 75.7°F (24.3°C) and 57.9°F (14.4°C). May comes with an increase, with the average high-temperature moving from a refreshing 66.6°F (19.2°C) in April to a moderately hot 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Grand Chain, Illinois, with an average temperature fluctuating between 85.6°F (29.8°C) and 66.2°F (19°C). The beginning of June marks a shift in the average high-temperature, moving from May's warm 75.7°F (24.3°C) to a still moderately hot 85.6°F (29.8°C). Weather in June »
Weather in July
July in Grand Chain, Illinois, is a tropical summer month, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 68.5°F (20.3°C). The warmest time of the year is July, with temperatures averaging a high of 88°F (31.1°C) and a low of 68.5°F (20.3°C). During July, the heat index is appraised at a blisteringly hot 104°F (40°C). Weather in July »
Weather in August
The last month of the summer, August, is also a hot month in Grand Chain, Illinois, with an average temperature fluctuating between 66.7°F (19.3°C) and 86.5°F (30.3°C). Grand Chain, Illinois, observes a minor difference in average high-temperatures between July's 88°F (31.1°C) and August's 86.5°F (30.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Grand Chain, Illinois, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 60.6°F (15.9°C). As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a hot 86.5°F (30.3°C) to a warm 81.1°F (27.3°C). Weather in September »
Weather in October
October, like September, in Grand Chain, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 49.6°F (9.8°C) and 67.8°F (19.9°C). The decrease of average high-temperatures is mild in October, with a decline from a moderately hot 81.1°F (27.3°C) in September to a comfortable 67.8°F (19.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Grand Chain, is another cool month, with an average temperature fluctuating between 54.5°F (12.5°C) and 38.8°F (3.8°C). A subtle decrease in the average high-temperature marks November, falling from October's refreshing 67.8°F (19.9°C) to a fresh 54.5°F (12.5°C). Weather in November »
Weather in December
December, the first month of the winter in Grand Chain, is also a frosty month, with an average temperature ranging between min 32.7°F (0.4°C) and max 44.8°F (7.1°C). The start of December signals a decrease in the average high-temperature, transitioning from a fresh 54.5°F (12.5°C) in November to a chilly 44.8°F (7.1°C). Weather in December »
Updated: Jul 6, 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 time of the year is the coldest?
Grand Chain's January weather, with an average high temperature of 40.1°F (4.5°C) and an average low temperature of 27°F (-2.8°C), tends to be the coldest of the year.
How many days does it rain?
Throughout the year, there are 118.3 rainfall days, and 13.03" (331mm) of precipitation is accumulated.
When does it snow?
January through March, November and December are months with snowfall.
How much does it snow?
Throughout the year, there are 11 snowfall days, and 1.57" (40mm) of snow is accumulated.
What are the months with the least sunshine?
January and February, with an average of 4.6h of sunshine, are months with the least sunshine.
What is the month with the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 3.2 days and typically aggregates up to 0.67" (17mm) of snow.
What are the most humid months?
The months with the highest humidity are March and May, with an average relative humidity of 79%.
When is Daylight Saving Time (DST) in Grand Chain?
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.
When it does not snow?
In Grand Chain, snow does not fall in April through October.
When is the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Grand Chain.
What is the rainiest month?
June is the month with the most rainfall. Rain falls for 12.5 days and accumulates 1.5" (38mm) of precipitation.
When are the longest days?
June has the longest days of the year, with an average of 14h and 42min of daylight.
What is the month with the most sunshine?
The months with the most sunshine are June and July, with an average of 10.4h of sunshine.
What is the warmest month?
The month of July sees the average highest temperatures, reaching 88°F (31.1°C) at the peak and 68.5°F (20.3°C) at the low.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 8.3 days and typically collects 0.47" (12mm) of precipitation.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Grand Chain, IL
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (40.1°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure
Grand Chain, 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:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"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:
30.05"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 (29.94"Hg).
Average wind speed
Grand Chain, IL
- Average wind speed in January:
9mph - Average wind speed in February:
9mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.3mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.2mph - Average wind speed in December:
8.5mph
The windiest months (with the highest average wind speed) are January and February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Grand Chain, IL
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Grand Chain, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
1.14" - Average rainfall in March:
1.22" - Average rainfall in April:
1.22" - Average rainfall in May:
1.34" - Average rainfall in June:
1.5"
- Average rainfall in July:
1.42" - Average rainfall in August:
1.3" - Average rainfall in September:
0.47" - Average rainfall in October:
0.98" - Average rainfall in November:
0.91" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days
Grand Chain, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
13.1 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
8.3 days - Average rainfall days in October:
7.5 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is July (13.1 days).
The months with the least rainy days are January, February and December (7.3 days).
Average snowfall
Grand Chain, IL
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Grand Chain, IL
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0.2 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:
1 days - Average snowfall days in December:
1.9 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Grand Chain, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Grand Chain, IL
- Average sunshine days in January:
21.4 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
16.7 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
15.1 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
19.1 days - Average sunshine days in October:
21.5 days - Average sunshine days in November:
20.8 days - Average sunshine days in December:
21.2 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is June (14.8 days).
Average UV index
Grand Chain, 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, February and December (UV index 2).
Average cloud cover
Grand Chain, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility
Grand Chain, 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).
Grand Chain, Illinois, USA
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