Climate and monthly weather forecastBarry, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Barry, Illinois, with an average temperature ranging between max 33.8°F (1°C) and min 21.6°F (-5.8°C). In Barry, January records the lowest average temperatures, peaking at 33.8°F (1°C) and reaching a low of 21.6°F (-5.8°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Barry, Illinois, with temperature in the range of an average low of 25°F (-3.9°C) and an average high of 38.8°F (3.8°C). Barry starts February with an average high-temperature of a still wintry 38.8°F (3.8°C), hinting at a minimal fluctuation from January. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Barry, Illinois, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 51.4°F (10.8°C). Barry in March sees a temperature change, with average high-temperatures moving from an icy 38.8°F (3.8°C) in February to a fresh 51.4°F (10.8°C). Weather in March »Weather in April
April in Barry, Illinois, is an enjoyable spring month, with an average temperature fluctuating between 63.5°F (17.5°C) and 46°F (7.8°C). As April arrives, a rise in the average high-temperature is observed, moving from a cool 51.4°F (10.8°C) in March to a comfortable 63.5°F (17.5°C). Weather in April »Weather in May
May, the last month of the spring in Barry, is a pleasant month, with an average temperature varying between 72.3°F (22.4°C) and 55.8°F (13.2°C). As April gives way to May, the average high-temperature displays a slight ascent, adjusting from an enjoyable 63.5°F (17.5°C) to an agreeable 72.3°F (22.4°C). Weather in May »Weather in June
June, the first month of the summer in Barry, is a warm month, with an average temperature varying between 82°F (27.8°C) and 64.6°F (18.1°C). June's arrival brings a change in high-temperatures, moving from a pleasant 72.3°F (22.4°C) in May to a moderately hot 82°F (27.8°C). Weather in June »Weather in July
July, like June, in Barry, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 66.7°F (19.3°C) and 84.4°F (29.1°C). July, noted for its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C), is considered the warmest month. For most parts of July, the heat index is computed to be a sweltering 95°F (35°C). Weather in July »Weather in August
August, the last month of the summer in Barry, is also a moderately hot month, with temperature in the range of an average high of 83.5°F (28.6°C) and an average low of 65.5°F (18.6°C). The onset of August brings an average high-temperature of a still warm 83.5°F (28.6°C), nearly matching the July temperature. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Barry, Illinois, with an average temperature varying between 58.6°F (14.8°C) and 78.3°F (25.7°C). The onset of September manifests an average high-temperature of a still moderately hot 78.3°F (25.7°C), demonstrating a minor variation from the preceding month. Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Barry, Illinois, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 47.3°F (8.5°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a warm 78.3°F (25.7°C) in September to a comfortable 64.2°F (17.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Barry, Illinois, with temperature in the range of an average high of 50.9°F (10.5°C) and an average low of 36.3°F (2.4°C). With November's onset, the weather shows a temperature decrease, transitioning from an enjoyable 64.2°F (17.9°C) in October to a cool 50.9°F (10.5°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Barry, Illinois, with an average temperature ranging between min 27.9°F (-2.3°C) and max 39°F (3.9°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a fresh 50.9°F (10.5°C) in November to an icy 39°F (3.9°C). Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Barry, IL
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Barry, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Barry, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.8mph - Average wind speed in May:
7.9mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.2mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity
Barry, IL
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Barry, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.75" - Average rainfall in March:
1.5" - Average rainfall in April:
1.89" - Average rainfall in May:
2.44" - Average rainfall in June:
2.36"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.85" - Average rainfall in September:
1.65" - Average rainfall in October:
1.5" - Average rainfall in November:
0.98" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").
Average rainfall days
Barry, IL
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
12.5 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
12.4 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
10 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
7 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall
Barry, IL
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Barry, IL
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
5.5 days - Average snowfall days in March:
3.5 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:
0.1 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.2 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Barry, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 30min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Barry, IL
- Average sunshine days in January:
20.5 days - Average sunshine days in February:
18 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
20.7 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).
Average UV index
Barry, IL
The months with the highest UV index are 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
Barry, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).
Average visibility
Barry, 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).





