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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, in Heyworth, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 31.3°F (-0.4°C) and 19.8°F (-6.8°C). January tends to be the coldest month, with temperatures averaging a daily high of 31.3°F (-0.4°C) and a low of 19.8°F (-6.8°C). Weather in January »
Weather in February
February, the last month of the winter in Heyworth, is a wintry month, with an average temperature fluctuating between 36.1°F (2.3°C) and 23.4°F (-4.8°C). The onset of February brings with it an average high-temperature of an icy 36.1°F (2.3°C), showing a negligible variation from the month before. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Heyworth, Illinois, with an average temperature ranging between max 49.3°F (9.6°C) and min 34.3°F (1.3°C). The start of March brings a shift in the average high-temperature, increasing from February's icy 36.1°F (2.3°C) to a frosty 49.3°F (9.6°C). Weather in March »
Weather in April
April in Heyworth, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 44.8°F (7.1°C) and 61.3°F (16.3°C). April sees a rise in the average high-temperature, climbing from a frosty 49.3°F (9.6°C) in March to an enjoyable 61.3°F (16.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Heyworth, Illinois, with an average temperature fluctuating between 72°F (22.2°C) and 55.6°F (13.1°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from an enjoyable 61.3°F (16.3°C) in April to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
June, the first month of the summer in Heyworth, is a moderately hot month, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 79.7°F (26.5°C). A minor escalation in the average high-temperature is seen with the onset of June, moving from an agreeable 72°F (22.2°C) in May to a warm 79.7°F (26.5°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Heyworth, Illinois, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 81.1°F (27.3°C). The temperatures reach their highest averages in July, with highs of 81.1°F (27.3°C) and lows of 64.9°F (18.3°C). For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Heyworth, Illinois, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 63.3°F (17.4°C). Heyworth notes an average high-temperature of a still moderately hot 80.2°F (26.8°C) in August, displaying minor variation from July. Weather in August »
Weather in September
September, the first month of the autumn in Heyworth, is also a moderately hot month, with temperature in the range of an average high of 75.9°F (24.4°C) and an average low of 57.7°F (14.3°C). The arrival of September brings an average high-temperature of a still moderately hot 75.9°F (24.4°C), nearly identical to August's 80.2°F (26.8°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Heyworth, Illinois, with temperature in the range of an average high of 63°F (17.2°C) and an average low of 46.9°F (8.3°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's moderately hot 75.9°F (24.4°C) to a comfortable 63°F (17.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Heyworth, Illinois, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 48.4°F (9.1°C). As October gives way to November, the average high-temperature displays a considerable decrease, falling from a refreshing 63°F (17.2°C) to a frosty 48.4°F (9.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Heyworth, Illinois, with an average temperature ranging between min 27°F (-2.8°C) and max 37°F (2.8°C). The arrival of December signals a shift in temperature, down from a chilly 48.4°F (9.1°C) in November to a cold 37°F (2.8°C). Weather in December »
Updated: Jul 29, 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 month is the coldest?
Heyworth's January weather, marked by an average high temperature of 31.3°F (-0.4°C) and an average low temperature of 19.8°F (-6.8°C), is the coldest in the year.
How many days does it rain?
In Heyworth, during the entire year, the rain falls for 124.4 days and collects up to 13.23" (336mm) of precipitation.
When does it snow?
Months with snowfall are January through April, November and December.
What is the snowiest month?
January is the month with the most snowfall in Heyworth. Snow falls for 8.5 days and accumulates 1.61" (41mm) of snow.
How much does it snow?
Throughout the year, there are 25.3 snowfall days, and 5.28" (134mm) of snow is accumulated.
What is the month with the least sunshine in Heyworth?
The month with the least sunshine is January, with an average of 3.9h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
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 in Heyworth. Rain falls for 15.8 days and accumulates 1.69" (43mm) of precipitation.
When it does not snow?
In Heyworth, snow does not fall in May through October.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 10.1h of sunshine.
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 time of the year is the hottest?
July proves to be the warmest month, recording an average peak temperature of 81.1°F (27.3°C) and a minimum temperature of 64.9°F (18.3°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?
October is the least humid month, with an average relative humidity of 71%.
What is the driest month?
December is the month with the least rainfall. Rain falls for 7.4 days and accumulates 0.67" (17mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Heyworth, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Heyworth, IL
- Average pressure in January:
30.14"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:
29.92"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:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Heyworth, IL
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.1mph - 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:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Heyworth, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Heyworth, IL
- Average rainfall in January:
0.83" - Average rainfall in February:
0.75" - Average rainfall in March:
1.02" - Average rainfall in April:
1.38" - Average rainfall in May:
1.69" - Average rainfall in June:
1.54"
- Average rainfall in July:
1.26" - Average rainfall in August:
1.26" - Average rainfall in September:
0.98" - Average rainfall in October:
1.02" - Average rainfall in November:
0.83" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days
Heyworth, IL
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
10.4 days - Average rainfall days in April:
13 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
14.2 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
9.2 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.3 days).
Average snowfall
Heyworth, IL
The month with the highest snowfall is January (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Heyworth, IL
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
5.8 days - Average snowfall days in March:
3.2 days - Average snowfall days in April:
0.7 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:
1.9 days - Average snowfall days in December:
5.2 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Heyworth, 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 2min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - 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 0min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- 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:
9h and 1min - Average sunshine in June:
10h and 1min
- 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:
6h and 0min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Heyworth, IL
- Average sunshine days in January:
19.6 days - Average sunshine days in February:
18.2 days - Average sunshine days in March:
18.1 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
19.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.7 days).
Average UV index
Heyworth, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Heyworth, 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 31).
Average visibility
Heyworth, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Heyworth, Illinois, USA
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