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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, in Herald, Illinois, is a wintry winter month, with an average temperature varying between 26.1°F (-3.3°C) and 38.3°F (3.5°C). In Herald, Illinois, January is the coldest month, with temperatures averaging a high of 38.3°F (3.5°C) and a low of 26.1°F (-3.3°C). Weather in January »
Weather in February
February, the last month of the winter in Herald, is a chilly month, with an average temperature fluctuating between 43.7°F (6.5°C) and 30°F (-1.1°C). Herald in February denotes a subtle temperature transition, adjusting from an average high of a wintry 38.3°F (3.5°C) in January to a chilly 43.7°F (6.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Herald, Illinois, with an average temperature varying between 39°F (3.9°C) and 54.5°F (12.5°C). Herald's transition into March is marked by a temperature shift, moving from a frosty 43.7°F (6.5°C) in February to a cool 54.5°F (12.5°C). Weather in March »
Weather in April
April in Herald, Illinois, is a refreshing spring month, with an average temperature ranging between max 66°F (18.9°C) and min 48.7°F (9.3°C). April brings a temperature increase, with average high-temperatures moving from March's fresh 54.5°F (12.5°C) to a refreshing 66°F (18.9°C). Weather in April »
Weather in May
May, the last month of the spring in Herald, is a warm month, with an average temperature fluctuating between 75.2°F (24°C) and 58.3°F (14.6°C). The beginning of May marks a shift in the average high-temperature, moving from April's refreshing 66°F (18.9°C) to a moderately hot 75.2°F (24°C). Weather in May »
Weather in June
June, the first month of the summer in Herald, is also a moderately hot month, with an average temperature varying between 83.8°F (28.8°C) and 66.6°F (19.2°C). June's arrival brings a modest temperature shift, moving from 75.2°F (24°C) in May to a still moderately hot 83.8°F (28.8°C). Weather in June »
Weather in July
July, like June, in Herald, Illinois, is a moderately hot summer month, with an average temperature ranging between max 85.6°F (29.8°C) and min 68.2°F (20.1°C). Herald experiences its highest average temperatures in July, reaching a peak of 85.6°F (29.8°C) and a minimum of 68.2°F (20.1°C). The heat index for July is computed to be a very hot 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Herald, is also a moderately hot month, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 84.4°F (29.1°C). The shift to August signals an average high-temperature of a still moderately hot 84.4°F (29.1°C), subtly varied from July's 85.6°F (29.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Herald, Illinois, with an average temperature ranging between max 79.5°F (26.4°C) and min 60.8°F (16°C). The shift from August to September is characterized by an average high-temperature of a still moderately hot 79.5°F (26.4°C), not significantly different from the 84.4°F (29.1°C) of August. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Herald, Illinois, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 67.1°F (19.5°C). As Herald, Illinois, enters October, the average high-temperature decreases from the a warm 79.5°F (26.4°C) of September to an enjoyable 67.1°F (19.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Herald, is also a fresh month, with an average temperature fluctuating between 53.6°F (12°C) and 38.5°F (3.6°C). In November, the average high-temperature decreases from a comfortable 67.1°F (19.5°C) in October to a cool 53.6°F (12°C). Weather in November »
Weather in December
December, the first month of the winter in Herald, is still a chilly month, with an average temperature ranging between max 43.5°F (6.4°C) and min 32.2°F (0.1°C). December shows a mild decline in the average high-temperature, falling from November's cool 53.6°F (12°C) to a chilly 43.5°F (6.4°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Herald?
January is the coldest month, exhibiting average temperatures of 38.3°F (3.5°C) at the peak and 26.1°F (-3.3°C) at the base.
How many days does it rain in Herald?
Throughout the year, in Herald, Illinois, there are 100.2 rainfall days, and 8.7" (221mm) of precipitation is accumulated.
When does it snow in Herald?
January through March, November and December are months with snowfall in Herald.
What is the snowiest month in Herald?
The months with the most snowfall in Herald are January and February, with an average 0.28" (7mm) of accumulated snow.
How much does it snow in Herald?
Throughout the year, there are 10.1 snowfall days, and 0.91" (23mm) of snow is accumulated.
What is the month with the least sunshine in Herald?
With an average of 4.4h of sunshine, January has the least sunshine of the year in Herald, Illinois.
When is the lowest UV index in Herald?
The months with the lowest UV index in Herald are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Herald?
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 in Herald?
The month with the most rainfall is April, when the rain falls for 11.3 days and typically aggregates up to 1.06" (27mm) of precipitation.
When it does not snow in Herald?
In Herald, snow does not fall in April through October.
What are the most humid months in Herald?
The months with the highest humidity in Herald are May and July, with an average relative humidity of 79%.
When is the highest UV index in Herald?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Herald.
When are the longest days in Herald?
June has the longest days of the year in Herald, with an average of 14h and 48min of daylight.
What month has the most sunshine in Herald?
June has the most sunshine of the year, with an average of 10.6h of sunshine.
What part of the year is the hottest in Herald?
July is Herald's warmest month, registering average high temperatures of 85.6°F (29.8°C) and lows of 68.2°F (20.1°C).
What is the driest month in Herald?
September is the month with the least rainfall in Herald, Illinois. Rain falls for 7.3 days and accumulates 0.28" (7mm) of precipitation.
What is the least humid month in Herald?
The least humid month in Herald, Illinois, is October, with an average relative humidity of 69%.
What is the month with the shortest days in Herald?
December has the shortest days of the year in Herald, Illinois, with an average of 9h and 36min of daylight.
Average temperature
Herald, 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 (38.3°F).
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Herald, 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:
30.04"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 (29.94"Hg).
Average wind speed
Herald, IL
- Average wind speed in January:
10mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Herald, IL
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Herald, IL
- Average rainfall in January:
0.67" - Average rainfall in February:
0.63" - Average rainfall in March:
0.75" - Average rainfall in April:
1.06" - Average rainfall in May:
0.98" - Average rainfall in June:
0.94"
- Average rainfall in July:
0.79" - Average rainfall in August:
0.79" - Average rainfall in September:
0.28" - Average rainfall in October:
0.71" - Average rainfall in November:
0.51" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is April (1.06").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days
Herald, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
9.1 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
11.9 days - Average rainfall days in June:
10.4 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
10.2 days - Average rainfall days in September:
7.3 days - Average rainfall days in October:
6 days - Average rainfall days in November:
5.3 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (5 days).
Average snowfall
Herald, IL
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Herald, IL
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
1.3 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:
0.5 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, September and October (0 days).
Average daylight / Average sunshine
Herald, 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 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - 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 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 3min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Herald, IL
- Average sunshine days in January:
23.3 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
19.9 days - Average sunshine days in April:
17.7 days - Average sunshine days in May:
15.8 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
16.9 days - Average sunshine days in August:
17.8 days - Average sunshine days in September:
20.4 days - Average sunshine days in October:
23.4 days - Average sunshine days in November:
22.3 days - Average sunshine days in December:
22.5 days
The month with the most sunshine days is October (23.4 days).
The month with the least sunshine days is May (15.8 days).
Average UV index
Herald, 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, November and December (UV index 2).
Average cloud cover
Herald, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility
Herald, 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).
Herald, Illinois, USA
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