Climate and monthly weather forecastPreston Heights, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Preston Heights, Illinois, is a freezing cold winter month, with an average temperature ranging between min 17.4°F (-8.1°C) and max 29.3°F (-1.5°C). Preston Heights's coldest temperatures are experienced in January, with average high temperatures of 29.3°F (-1.5°C) and lows of 17.4°F (-8.1°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Preston Heights, Illinois, with an average temperature varying between 20.7°F (-6.3°C) and 33.4°F (0.8°C). The transition into February is marked with an average high-temperature of an icy 33.4°F (0.8°C), showing an insignificant shift from January's 29.3°F (-1.5°C). Weather in February »Weather in March
March, the first month of the spring in Preston Heights, is a chilly month, with an average temperature fluctuating between 46.2°F (7.9°C) and 31.8°F (-0.1°C). As Preston Heights enters March, the average high-temperature increases from the an icy 33.4°F (0.8°C) of February to a frosty 46.2°F (7.9°C). Weather in March »Weather in April
April in Preston Heights, Illinois, is a mild spring month, with an average temperature varying between 58.1°F (14.5°C) and 41.7°F (5.4°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a frosty 46.2°F (7.9°C) to a moderate 58.1°F (14.5°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Preston Heights, Illinois, with temperature in the range of an average high of 70.3°F (21.3°C) and an average low of 52.3°F (11.3°C). The arrival of May sees a shift in the average high-temperature, moving from a mild 58.1°F (14.5°C) in April to a pleasant 70.3°F (21.3°C). Weather in May »Weather in June
June, the first month of the summer in Preston Heights, is a moderately hot month, with an average temperature fluctuating between 61.3°F (16.3°C) and 79.2°F (26.2°C). June's arrival signals a subtle increase in average high-temperatures, moving from May's pleasant 70.3°F (21.3°C) to a warm 79.2°F (26.2°C). Weather in June »Weather in July
July, like June, in Preston Heights, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 81.3°F (27.4°C). July is the warmest month, with the temperature often reaching an average high of 81.3°F (27.4°C) and an average low of 64.8°F (18.2°C). Throughout July, the heat index is estimated at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Preston Heights, Illinois, with an average temperature varying between 80.1°F (26.7°C) and 62.8°F (17.1°C). The advent of August denotes an average high-temperature of a still warm 80.1°F (26.7°C), subtly different from July's 81.3°F (27.4°C). Weather in August »Weather in September
September, the first month of the autumn in Preston Heights, is also a moderately hot month, with an average temperature ranging between min 56.7°F (13.7°C) and max 74.7°F (23.7°C). A modest decline in the average high-temperature is seen during September, decreasing from 80.1°F (26.7°C) in August to a still warm 74.7°F (23.7°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Preston Heights, Illinois, with an average temperature varying between 45.5°F (7.5°C) and 61.3°F (16.3°C). The onset of October introduces a moderate change in Preston Heights's weather, with average high-temperatures falling from September's moderately hot 74.7°F (23.7°C) to a comfortable 61.3°F (16.3°C). Weather in October »Weather in November
November, the last month of the autumn in Preston Heights, is another chilly month, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 33.4°F (0.8°C). Preston Heights, Illinois, in November demonstrates a small temperature transition, adjusting from an average high of a comfortable 61.3°F (16.3°C) in October to a frosty 47.1°F (8.4°C). Weather in November »Weather in December
December, the first month of the winter in Preston Heights, is also an icy month, with an average temperature varying between 25°F (-3.9°C) and 35.1°F (1.7°C). Preston Heights in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 47.1°F (8.4°C) to an icy 35.1°F (1.7°C). Weather in December »Updated: Feb 12, 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
The coldest time of the year in Preston Heights is January, with temperatures averaging a high of 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C).
In Preston Heights, during the entire year, the rain falls for 153.6 days and collects up to 32.72" (831mm) of precipitation.
Months with snowfall in Preston Heights are January through April, November and December.
January is the month with the most snowfall in Preston Heights, Illinois. Snow falls for 11.9 days and accumulates 4.33" (110mm) of snow.
In Preston Heights, during the entire year, snow falls for 38.2 days and aggregates up to 14.61" (371mm) of snow.
The month with the least sunshine in Preston Heights, Illinois, is January, with an average of 3.7h of sunshine.
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
The most humid month is February, with an average relative humidity of 83%.
The month with the least rainfall in Preston Heights is February, when the rain falls for 5.7 days and typically collects 1.61" (41mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Preston Heights, Illinois, 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.
May is the month with the most rainfall in Preston Heights, Illinois. Rain falls for 17.8 days and accumulates 4.41" (112mm) of precipitation.
In Preston Heights, Illinois, snow does not fall in May through October.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index in Preston Heights are June and July, with an average maximum UV index of 6.
Preston Heights's temperature records reveal July as the warmest month, marked by average highs of 81.3°F (27.4°C) and lows of 64.8°F (18.2°C).
August has the most sunshine of the year in Preston Heights, Illinois, with an average of 9.7h of sunshine.
The least humid month is October, with an average relative humidity of 73%.
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Preston Heights, IL
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.3°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure
Preston Heights, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Preston Heights, IL
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.4mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity
Preston Heights, IL
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Preston Heights, IL
- Average rainfall in January:
1.85" - Average rainfall in February:
1.61" - Average rainfall in March:
2.09" - Average rainfall in April:
3.62" - Average rainfall in May:
4.41" - Average rainfall in June:
4.02"
- Average rainfall in July:
3.46" - Average rainfall in August:
2.83" - Average rainfall in September:
2.48" - Average rainfall in October:
2.95" - Average rainfall in November:
1.69" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days
Preston Heights, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
17.9 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.9 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall
Preston Heights, IL
The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Preston Heights, IL
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5 days - Average snowfall days in April:
1 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:
0.2 days - Average snowfall days in November:
2.6 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Preston Heights, IL
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 54min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 6min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Preston Heights, IL
- Average sunshine days in January:
14.4 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
15 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18.1 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index
Preston Heights, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Preston Heights, IL
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility
Preston Heights, IL
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
