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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 Highland, Illinois, is another cold winter month, with an average temperature fluctuating between 36.9°F (2.7°C) and 23.7°F (-4.6°C). During the coldest month, January, temperatures average a high of 36.9°F (2.7°C) and a low of 23.7°F (-4.6°C). Weather in January »
Weather in February
February, the last month of the winter in Highland, is also an icy month, with an average temperature fluctuating between 41.5°F (5.3°C) and 27.3°F (-2.6°C). February's arrival brings an average high-temperature of a still icy 41.5°F (5.3°C), demonstrating subtle variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Highland, is a fresh month, with an average temperature fluctuating between 37.2°F (2.9°C) and 53.4°F (11.9°C). The arrival of March brings a temperature shift, with the average high-temperature escalating from a cold 41.5°F (5.3°C) in February to a cool 53.4°F (11.9°C). Weather in March »
Weather in April
April is an enjoyable spring month in Highland, Illinois, with an average temperature fluctuating between 64.2°F (17.9°C) and 47.3°F (8.5°C). The start of April is characterized by an increase in the average high-temperature, transitioning from a cool 53.4°F (11.9°C) in March to an enjoyable 64.2°F (17.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Highland, Illinois, with temperature in the range of an average high of 74.3°F (23.5°C) and an average low of 57.4°F (14.1°C). As May arrives, Highland's weather shows an increase in high-temperatures, moving from April's refreshing 64.2°F (17.9°C) to a warm 74.3°F (23.5°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Highland, Illinois, with an average temperature ranging between max 83.1°F (28.4°C) and min 66.2°F (19°C). June's arrival signals a subtle increase in average high-temperatures, moving from May's 74.3°F (23.5°C) to a still moderately hot 83.1°F (28.4°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Highland, Illinois, with an average temperature ranging between min 67.6°F (19.8°C) and max 84.9°F (29.4°C). July is Highland's warmest month, registering average high temperatures of 84.9°F (29.4°C) and lows of 67.6°F (19.8°C). Throughout July, the heat index is appraised at a torrid 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Highland, Illinois, with an average temperature ranging between max 83.7°F (28.7°C) and min 65.8°F (18.8°C). Highland experiences an average high-temperature of a still moderately hot 83.7°F (28.7°C) with the onset of August, subtly varied from July's 84.9°F (29.4°C). Weather in August »
Weather in September
September, the first month of the autumn in Highland, is also a moderately hot month, with an average temperature ranging between min 59.7°F (15.4°C) and max 78.1°F (25.6°C). September witnesses a gentle descent in average high-temperature, descending from August's warm 83.7°F (28.7°C) to a still moderately hot 78.1°F (25.6°C). Weather in September »
Weather in October
October, like September, in Highland, Illinois, is another enjoyable autumn month, with an average temperature varying between 65.7°F (18.7°C) and 48.9°F (9.4°C). October indicates a shift in the average high-temperature, from September's warm 78.1°F (25.6°C) to a refreshing 65.7°F (18.7°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Highland, Illinois, with temperature in the range of an average low of 37.4°F (3°C) and an average high of 52.3°F (11.3°C). Transition into November marks a drop in the average high-temperature, moving from a comfortable 65.7°F (18.7°C) in October to a cool 52.3°F (11.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Highland, Illinois, with temperature in the range of an average high of 41.5°F (5.3°C) and an average low of 30°F (-1.1°C). The shift to December brings a decrease in the average high-temperature, falling from a fresh 52.3°F (11.3°C) in November to a wintry 41.5°F (5.3°C). Weather in December »
Updated: Jul 26, 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 is the coldest time of year?
With an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 23.7°F (-4.6°C), January is the coldest month.
How many days does it rain?
In Highland, during the entire year, the rain falls for 110.6 days and collects up to 12.01" (305mm) of precipitation.
When does it snow?
Months with snowfall are January through March, October through December.
How many days does it snow?
In Highland, Illinois, during the entire year, snow falls for 15.9 days and aggregates up to 2.32" (59mm) of snow.
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 are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 6.1 days and typically collects 0.55" (14mm) of precipitation.
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.
When it does not snow?
April through September are months without snowfall.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 13.1 days and typically aggregates up to 1.46" (37mm) of precipitation.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Highland.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.6h of sunshine.
What are the warmest months?
The average temperatures reach their apex in July, averaging 84.9°F (29.4°C) at the high end and 67.6°F (19.8°C) at the low end.
What are the most humid months?
The months with the highest humidity in Highland are July and August, with an average relative humidity of 80%.
What is the least humid month in Highland?
The least humid month in Highland is October, with an average relative humidity of 71%.
What is the snowiest month?
December is the month with the most snowfall. Snow falls for 3.1 days and accumulates 0.94" (24mm) of snow.
What is the month with the shortest days?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Highland, IL
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure
Highland, 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:
29.94"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:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Highland, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.3mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
8.2mph - Average wind speed in November:
8.9mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Highland, IL
The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Highland, IL
- Average rainfall in January:
0.91" - Average rainfall in February:
0.55" - Average rainfall in March:
0.91" - Average rainfall in April:
1.3" - Average rainfall in May:
1.46" - Average rainfall in June:
1.3"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.14" - Average rainfall in September:
0.59" - Average rainfall in October:
1.02" - Average rainfall in November:
0.71" - Average rainfall in December:
0.79"
The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days
Highland, IL
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
12 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
11.1 days
- Average rainfall days in July:
12.9 days - Average rainfall days in August:
9.7 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
7.3 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are January and December (5.9 days).
Average snowfall
Highland, IL
The month with the highest snowfall is December (0.94").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Highland, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
1.7 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:
1.2 days - Average snowfall days in December:
3.1 days
The months with the highest number of snowfall days are January and February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Highland, 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 2min - Average daylight in June:
14h and 5min
- 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 1min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 3min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Highland, IL
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
14.5 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
18.3 days - Average sunshine days in October:
21.5 days - Average sunshine days in November:
20.9 days - Average sunshine days in December:
21.8 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (14.5 days).
Average UV index
Highland, 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
Highland, IL
The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July, August and September (Cloud cover 28).
Average visibility
Highland, 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).
Highland, Illinois, USA
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