Climate and monthly weather forecastFairview Heights, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Fairview Heights, Illinois, with temperature in the range of an average high of 37.8°F (3.2°C) and an average low of 24.8°F (-4°C). Fairview Heights experiences its lowest average temperatures in January, reaching a peak of 37.8°F (3.2°C) and a minimum of 24.8°F (-4°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Fairview Heights, Illinois, with an average temperature varying between 27.9°F (-2.3°C) and 42.4°F (5.8°C). The advent of February presents an average high-temperature of a still icy 42.4°F (5.8°C), maintaining a close correlation with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Fairview Heights, Illinois, with an average temperature fluctuating between 54.5°F (12.5°C) and 37.9°F (3.3°C). An escalation in the average high-temperature is seen with the onset of March, moving from an icy 42.4°F (5.8°C) in February to a cool 54.5°F (12.5°C). Weather in March »Weather in April
April in Fairview Heights, Illinois, is a comfortable spring month, with an average temperature ranging between min 47.8°F (8.8°C) and max 65.5°F (18.6°C). With the onset of April, Fairview Heights's weather sees a temperature rise, transitioning from a fresh 54.5°F (12.5°C) in March to a refreshing 65.5°F (18.6°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Fairview Heights, Illinois, with an average temperature fluctuating between 74.8°F (23.8°C) and 57.9°F (14.4°C). In Fairview Heights, stepping into May brings a temperature increase, moving up from April's enjoyable 65.5°F (18.6°C) to a warm 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Fairview Heights, is still a warm month, with an average temperature fluctuating between 83.7°F (28.7°C) and 66.6°F (19.2°C). A slight uplift in the average high-temperature marks June, adjusting from May's 74.8°F (23.8°C) to a still moderately hot 83.7°F (28.7°C). Weather in June »Weather in July
July, like June, in Fairview Heights, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 68.4°F (20.2°C) and an average high of 85.8°F (29.9°C). July, having an average high-temperature of 85.8°F (29.9°C) and an average low-temperature of 68.4°F (20.2°C), is the warmest month. July's mean heat index is calculated to be a sweltering 98.6°F (37°C). Weather in July »Weather in August
August, the last month of the summer in Fairview Heights, is also a moderately hot month, with an average temperature ranging between max 84.6°F (29.2°C) and min 66°F (18.9°C). The advent of August denotes an average high-temperature of a still warm 84.6°F (29.2°C), subtly different from July's 85.8°F (29.9°C). Weather in August »Weather in September
September, the first month of the autumn in Fairview Heights, is still a warm month, with an average temperature varying between 79.3°F (26.3°C) and 59.9°F (15.5°C). Fairview Heights's transition from August to September introduces an average high-temperature of a still warm 79.3°F (26.3°C), marking an insignificant variation from the 84.6°F (29.2°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Fairview Heights, Illinois, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 66.7°F (19.3°C). Fairview Heights's October weather shows a moderate shift in high-temperatures, falling from September's warm 79.3°F (26.3°C) to an enjoyable 66.7°F (19.3°C). Weather in October »Weather in November
November, the last month of the autumn in Fairview Heights, is another cool month, with temperature in the range of an average high of 53.4°F (11.9°C) and an average low of 37.8°F (3.2°C). As October transitions to November, the average high-temperature falls from an enjoyable 66.7°F (19.3°C) to a fresh 53.4°F (11.9°C). Weather in November »Weather in December
December, the first month of the winter in Fairview Heights, is still a cold month, with an average temperature ranging between min 30.6°F (-0.8°C) and max 42.6°F (5.9°C). December indicates a shift in the average high-temperature, from November's cool 53.4°F (11.9°C) to a wintry 42.6°F (5.9°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
Fairview Heights's temperature records reveal January as the coldest month, marked by average highs of 37.8°F (3.2°C) and lows of 24.8°F (-4°C).
Throughout the year, there are 147.1 rainfall days, and 35.43" (900mm) of precipitation is accumulated.
Months with snowfall are January through March, November and December.
January is the month with the most snowfall. Snow falls for 7.3 days and accumulates 2.4" (61mm) of snow.
In Fairview Heights, during the entire year, snow falls for 21.1 days and aggregates up to 8.11" (206mm) of snow.
January has the least sunshine of the year, with an average of 4.5h of sunshine.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the least rainfall is February, when the rain falls for 7.8 days and typically collects 1.93" (49mm) of precipitation.
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.
In Fairview Heights, snow does not fall in April through October.
May and July, with an average relative humidity of 79%, are most humid months.
The month with the most rainfall is May, when the rain falls for 16.4 days and typically aggregates up to 4.37" (111mm) of precipitation.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 14h and 48min of daylight, June has the longest days of the year.
With an average of 10.3h of sunshine, June has the most sunshine of the year.
In Fairview Heights, temperatures reach their average annual highs in July, measuring 85.8°F (29.9°C) and a minimum average of 68.4°F (20.2°C).
With an average relative humidity of 71%, October is the least humid month.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Fairview Heights, IL
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Fairview Heights, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"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
Fairview Heights, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.7mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity
Fairview Heights, IL
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Fairview Heights, IL
- Average rainfall in January:
2.32" - Average rainfall in February:
1.93" - Average rainfall in March:
2.72" - Average rainfall in April:
3.78" - Average rainfall in May:
4.37" - Average rainfall in June:
3.98"
- Average rainfall in July:
3.43" - Average rainfall in August:
3.31" - Average rainfall in September:
2.2" - Average rainfall in October:
2.95" - Average rainfall in November:
2.17" - Average rainfall in December:
2.28"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days
Fairview Heights, IL
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
16.4 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
12.9 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
8.4 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).
Average snowfall
Fairview Heights, IL
The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Fairview Heights, IL
- Average snowfall days in January:
7.3 days - Average snowfall days in February:
6 days - Average snowfall days in March:
2.1 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:
0.1 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.2 days - Average snowfall days in December:
4 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Fairview Heights, IL
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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 30min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 12min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Fairview Heights, IL
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
17.3 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Fairview Heights, 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 and December (UV index 2).
Average cloud cover
Fairview Heights, IL
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility
Fairview Heights, 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).
