Climate and monthly weather forecast
New Grand Chain, IL

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Weather in January

January, like December, in New Grand Chain, Illinois, is a wintry winter month, with temperature in the range of an average high of 40.1°F (4.5°C) and an average low of 27°F (-2.8°C). New Grand Chain's January weather, marked by an average high temperature of 40.1°F (4.5°C) and an average low temperature of 27°F (-2.8°C), is the coldest in the year. Weather in January »

Weather in February

February, the last month of the winter in New Grand Chain, is a chilly month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 45.1°F (7.3°C). The advent of February brings an average high-temperature of a chilly 45.1°F (7.3°C), almost identical to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in New Grand Chain, is a refreshing month, with an average temperature fluctuating between 55.8°F (13.2°C) and 39.7°F (4.3°C). In New Grand Chain, stepping into March brings a temperature increase, moving up 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 New Grand Chain, Illinois, with an average temperature varying between 48.9°F (9.4°C) and 66.6°F (19.2°C). The rise of average high-temperatures is seen in April, with an increase from a moderate 55.8°F (13.2°C) in March to a still refreshing 66.6°F (19.2°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in New Grand Chain, Illinois, with an average temperature ranging between max 75.7°F (24.3°C) and min 57.9°F (14.4°C). In New Grand Chain, the onset of May comes with an increased average high-temperature, moving from April's comfortable 66.6°F (19.2°C) to a warm 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 New Grand Chain, Illinois, with an average temperature fluctuating between 66.2°F (19°C) and 85.6°F (29.8°C). June shows a rise in the average high-temperature, moving from May's 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 New 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). In New Grand Chain, the highest average temperatures are observed in July, with a high of 88°F (31.1°C) and a low of 68.5°F (20.3°C). For July, the heat index is evaluated at a blisteringly hot 104°F (40°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in New Grand Chain, Illinois, with an average temperature ranging between max 86.5°F (30.3°C) and min 66.7°F (19.3°C). July's transformation into August witnesses an average high-temperature of a still tropical 86.5°F (30.3°C), noting a minor change from the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in New Grand Chain, Illinois, with an average temperature varying between 60.6°F (15.9°C) and 81.1°F (27.3°C). The onset of September is marked by a minor decrease in temperature, transitioning from a tropical 86.5°F (30.3°C) in August to a warm 81.1°F (27.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in New Grand Chain, Illinois, with an average temperature varying between 49.6°F (9.8°C) and 67.8°F (19.9°C). The average high-temperature decreases in October, shifting from a warm 81.1°F (27.3°C) in September to an enjoyable 67.8°F (19.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in New Grand Chain, Illinois, with an average temperature fluctuating between 54.5°F (12.5°C) and 38.8°F (3.8°C). In New Grand Chain, the beginning of November is marked by a lowered average high-temperature, shifting from October's refreshing 67.8°F (19.9°C) to a cool 54.5°F (12.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in New Grand Chain, Illinois, with an average temperature fluctuating between 32.7°F (0.4°C) and 44.8°F (7.1°C). December's onset brings a slight change in high-temperatures, falling from a cool 54.5°F (12.5°C) in November to a frosty 44.8°F (7.1°C). Weather in December »
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

Temperature records mark January as the coldest month, with highs averaging 40.1°F (4.5°C) and lows at 27°F (-2.8°C).

How many days does it rain?

Throughout the year, in New Grand Chain, there are 118.3 rainfall days, and 13.03" (331mm) of precipitation is accumulated.

When does it snow?

Months with snowfall in New Grand Chain are January through March, November and December.

How much does it snow?

In New Grand Chain, during the entire year, snow falls for 11 days and aggregates up to 1.57" (40mm) of snow.

What are the months with the least sunshine?

The months with the least sunshine are January and February, with an average of 4.6h of sunshine.

When is the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 3.2 days and accumulates 0.67" (17mm) of snow.

What are the most humid months?

March and May, with an average relative humidity of 79%, are most humid months.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in New Grand Chain, 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 New Grand Chain, snow does not fall in April through October.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the wettest month?

The month with the most rainfall is June, when the rain falls for 12.5 days and typically aggregates up to 1.5" (38mm) of precipitation.

When are the longest days?

The month with the longest days is June, 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 month is the hottest?

July, with its high-temperature average of 88°F (31.1°C) and a low-temperature average of 68.5°F (20.3°C), is the warmest month.

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?

With an average relative humidity of 71%, October is the least humid month.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

Average temperature
New Grand Chain, IL

Average temperature - New 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
New Grand Chain, IL

Average pressure - New Grand Chain, IL

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
New Grand Chain, IL

Average wind speed - New Grand Chain, IL

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
New Grand Chain, IL

Average humidity - New 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
New Grand Chain, IL

Average rainfall - New Grand Chain, IL

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
New Grand Chain, IL

Average rainfall days - New Grand Chain, IL

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
New Grand Chain, IL

Average snowfall - New 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
New Grand Chain, IL

Average snowfall days - New Grand Chain, IL

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
New Grand Chain, IL

Average daylight / Average sunshine - New Grand Chain, IL

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).

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
New Grand Chain, IL

Average sunshine days - New Grand Chain, IL

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
New Grand Chain, IL

Average UV index - New 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
New Grand Chain, IL

Average cloud cover - New 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
New Grand Chain, IL

Average visibility - New 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).

New Grand Chain, Illinois, USA

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