Climate and monthly weather forecastFrankfort Square, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, in Frankfort Square, Illinois, is another subzero cold winter month, with temperature in the range of an average high of 29.7°F (-1.3°C) and an average low of 18.7°F (-7.4°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 29.7°F (-1.3°C) and a low of 18.7°F (-7.4°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Frankfort Square, Illinois, with an average temperature fluctuating between 21°F (-6.1°C) and 33.1°F (0.6°C). February's onset brings an average high-temperature of an icy 33.1°F (0.6°C), showing a minute difference from January's 29.7°F (-1.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Frankfort Square, Illinois, with temperature in the range of an average high of 45.9°F (7.7°C) and an average low of 32.4°F (0.2°C). March sees a temperature increase, moving from an icy 33.1°F (0.6°C) in February to a chilly 45.9°F (7.7°C). Weather in March »Weather in April
April in Frankfort Square, Illinois, is a moderate spring month, with an average temperature varying between 57°F (13.9°C) and 41.7°F (5.4°C). In Frankfort Square, the onset of April comes with an increased average high-temperature, moving from March's frosty 45.9°F (7.7°C) to a mild 57°F (13.9°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Frankfort Square, Illinois, with an average temperature varying between 68.7°F (20.4°C) and 52.5°F (11.4°C). The onset of May marks an increase in the average high-temperature, moving from a moderate 57°F (13.9°C) in April to a pleasant 68.7°F (20.4°C). Weather in May »Weather in June
June, the first month of the summer in Frankfort Square, is a warm month, with an average temperature varying between 61.5°F (16.4°C) and 78.3°F (25.7°C). The arrival of June brings a change in Frankfort Square's weather, with average high-temperatures moving from May's agreeable 68.7°F (20.4°C) to a warm 78.3°F (25.7°C). Weather in June »Weather in July
July, like June, in Frankfort Square, Illinois, is a moderately hot summer month, with an average temperature ranging between min 65.8°F (18.8°C) and max 81.9°F (27.7°C). The warmest temperatures occur during July, when averages reach a peak of 81.9°F (27.7°C) and a low of 65.8°F (18.8°C). July's average heat index is calculated to be a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Frankfort Square, is another warm month, with an average temperature fluctuating between 64.2°F (17.9°C) and 79.9°F (26.6°C). The average high-temperature for August is a still warm 79.9°F (26.6°C), closely aligning with the temperature of the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Frankfort Square, is still a warm month, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 73.9°F (23.3°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a moderately hot 79.9°F (26.6°C) in August to a still warm 73.9°F (23.3°C). Weather in September »Weather in October
October, like September, in Frankfort Square, Illinois, is another comfortable autumn month, with an average temperature varying between 61.2°F (16.2°C) and 46.8°F (8.2°C). As September transitions into October, Frankfort Square sees a drop in the average high-temperature, transitioning from a warm 73.9°F (23.3°C) to an enjoyable 61.2°F (16.2°C). Weather in October »Weather in November
November, the last month of the autumn in Frankfort Square, is also a frosty month, with an average temperature varying between 46.9°F (8.3°C) and 34.5°F (1.4°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a refreshing 61.2°F (16.2°C) in October to a frosty 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Frankfort Square, Illinois, with an average temperature varying between 25.7°F (-3.5°C) and 35.4°F (1.9°C). Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 46.9°F (8.3°C) in November to a wintry 35.4°F (1.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Frankfort Square, IL
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure
Frankfort Square, IL
- Average pressure in January:
30.11"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 (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Frankfort Square, IL
- Average wind speed in January:
10.1mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.3mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.2mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Frankfort Square, IL
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Frankfort Square, IL
- Average rainfall in January:
0.55" - Average rainfall in February:
0.55" - Average rainfall in March:
0.59" - Average rainfall in April:
1.14" - Average rainfall in May:
1.54" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.26" - Average rainfall in August:
1.06" - Average rainfall in September:
0.98" - Average rainfall in October:
0.98" - Average rainfall in November:
0.59" - Average rainfall in December:
0.55"
The wettest month (with the highest rainfall) is May (1.54").
The driest months (with the least rainfall) are January, February and December (0.55").
Average rainfall days
Frankfort Square, IL
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
8.7 days - Average rainfall days in April:
12.6 days - Average rainfall days in May:
12.4 days - Average rainfall days in June:
13 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
9 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
Frankfort Square, IL
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Frankfort Square, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
4 days - Average snowfall days in April:
1.3 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:
0.4 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
6.6 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Frankfort Square, 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 42min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Frankfort Square, IL
- Average sunshine days in January:
19 days - Average sunshine days in February:
17.2 days - Average sunshine days in March:
18.7 days - Average sunshine days in April:
15.1 days - Average sunshine days in May:
15 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is June (13.1 days).
Average UV index
Frankfort Square, 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
Frankfort Square, IL
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Frankfort Square, 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).





