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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, like December, is another subzero cold winter month in Henry, Illinois, with an average temperature fluctuating between 29.3°F (-1.5°C) and 17.4°F (-8.1°C). With average high and low temperatures of 29.3°F (-1.5°C) and 17.4°F (-8.1°C) respectively, January is Henry's coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Henry, Illinois, with an average temperature fluctuating between 33.4°F (0.8°C) and 21°F (-6.1°C). Henry's average high-temperature in February is an icy 33.4°F (0.8°C), indicating a subtle variation from January. Weather in February »
Weather in March
March, the first month of the spring in Henry, is a frosty month, with temperature in the range of an average high of 47.7°F (8.7°C) and an average low of 33.1°F (0.6°C). In Henry, the average high-temperature in March increases from an icy 33.4°F (0.8°C) in February to a chilly 47.7°F (8.7°C). Weather in March »
Weather in April
April is a refreshing spring month in Henry, Illinois, with an average temperature ranging between min 43°F (6.1°C) and max 59.4°F (15.2°C). April's arrival brings a temperature shift, moving from a frosty 47.7°F (8.7°C) in March to a refreshing 59.4°F (15.2°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Henry, Illinois, with an average temperature fluctuating between 54°F (12.2°C) and 71.1°F (21.7°C). May brings a temperature increase, with average high-temperatures moving from April's mild 59.4°F (15.2°C) to an agreeable 71.1°F (21.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Henry, Illinois, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 62.1°F (16.7°C). Henry in June observes a minor temperature shift, with average high-temperatures adjusting from an agreeable 71.1°F (21.7°C) in May to a moderately hot 79°F (26.1°C). Weather in June »
Weather in July
July, like June, in Henry, Illinois, is another warm summer month, with an average temperature varying between 64.6°F (18.1°C) and 81°F (27.2°C). In Henry, July is the month with the highest recorded average temperatures, measuring a high of 81°F (27.2°C) and a low of 64.6°F (18.1°C). Throughout July, the heat index is computed to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Henry, Illinois, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 62.2°F (16.8°C). Henry's August reports an average high-temperature of a still warm 80.1°F (26.7°C), exhibiting a minor difference from July. Weather in August »
Weather in September
September, the first month of the autumn in Henry, is also a moderately hot month, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 75°F (23.9°C). September's weather displays an average high-temperature of a still warm 75°F (23.9°C), slightly varied from August's 80.1°F (26.7°C). Weather in September »
Weather in October
October, like September, in Henry, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 61.7°F (16.5°C) and 46°F (7.8°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's moderately hot 75°F (23.9°C) to an enjoyable 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Henry, Illinois, with an average temperature varying between 47.3°F (8.5°C) and 34°F (1.1°C). As November arrives, Henry's weather displays a notable decrease in high-temperatures, falling from October's comfortable 61.7°F (16.5°C) to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
December, the first month of the winter in Henry, is also a wintry month, with an average temperature varying between 35.6°F (2°C) and 25.3°F (-3.7°C). As December commences, the average high-temperature shows a reduction, transitioning from a frosty 47.3°F (8.5°C) in November to an icy 35.6°F (2°C). Weather in December »
Updated: Jun 16, 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 are the coldest months?
With an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 17.4°F (-8.1°C), January is the coldest month.
What is the driest month?
The months with the least rainfall are January and December Rain falls for 6.4 days and accumulates 1.57" (40mm) of rain.
How much does it rain in Henry?
In Henry, during the entire year, the rain falls for 151.3 days and collects up to 30.16" (766mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
How many days does it snow in Henry?
In Henry, during the entire year, snow falls for 36.7 days and aggregates up to 14.09" (358mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.9h of sunshine.
When is the lowest UV index?
With an average maximum UV index of 1, January is the month with the lowest UV index in Henry, Illinois.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 9.6 days and accumulates 3.7" (94mm) of snow.
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 wettest month?
May is the month with the most rainfall. Rain falls for 18.4 days and accumulates 4.41" (112mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What month has the most sunshine?
With an average of 10h of sunshine, June has the most sunshine of the year.
What are the months with 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?
The temperatures reach their highest averages in July, with highs of 81°F (27.2°C) and lows of 64.6°F (18.1°C).
What is the most humid month?
The most humid month is July, with an average relative humidity of 85%.
What is the least humid month?
The least humid month is October, with an average relative humidity of 72%.
What is the month with the shortest days in Henry?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Henry, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure
Henry, 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:
29.95"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:
30.11"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
Henry, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Henry, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Henry, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.61" - Average rainfall in March:
2.17" - Average rainfall in April:
3.7" - Average rainfall in May:
4.41" - Average rainfall in June:
3.23"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.24" - Average rainfall in September:
2.24" - Average rainfall in October:
2.91" - Average rainfall in November:
1.73" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days
Henry, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
17 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Henry, IL
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Henry, IL
- Average snowfall days in January:
11.2 days - Average snowfall days in February:
9.6 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.3 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:
0.3 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Henry, 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 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Henry, IL
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index
Henry, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Henry, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility
Henry, 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).
Henry, Illinois, USA
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