Climate and monthly weather forecastPerry, IL
Climate and monthly weather forecast
Weather in January
January, like December, in Perry, Illinois, is an icy winter month, with an average temperature fluctuating between 33.8°F (1°C) and 21.6°F (-5.8°C). Perry's temperature records reveal January as the coldest month, marked by average highs of 33.8°F (1°C) and lows of 21.6°F (-5.8°C). Weather in January »Weather in February
February, the last month of the winter in Perry, is also an icy month, with an average temperature fluctuating between 38.8°F (3.8°C) and 25°F (-3.9°C). The advent of February observes an average high-temperature of a still icy 38.8°F (3.8°C), nearly identical to January's 33.8°F (1°C). Weather in February »Weather in March
March, the first month of the spring in Perry, is a cool month, with an average temperature ranging between min 36°F (2.2°C) and max 51.4°F (10.8°C). Entering March, Perry sees a temperature rise, with the average high-temperature advancing from February's cold 38.8°F (3.8°C) to a cool 51.4°F (10.8°C). Weather in March »Weather in April
April is a refreshing spring month in Perry, Illinois, with temperature in the range of an average high of 63.5°F (17.5°C) and an average low of 46°F (7.8°C). Perry sees an increase in average high-temperatures during April, moving from a cool 51.4°F (10.8°C) in March to an enjoyable 63.5°F (17.5°C). Weather in April »Weather in May
May, the last month of the spring in Perry, is a pleasant month, with an average temperature fluctuating between 72.3°F (22.4°C) and 55.8°F (13.2°C). Perry's May weather indicates a minor increase in high-temperatures, edging from April's enjoyable 63.5°F (17.5°C) to a pleasant 72.3°F (22.4°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Perry, Illinois, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 64.6°F (18.1°C). Perry sees a rise in temperature during June, with average high-temperatures transitioning 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, the same as June, is another warm summer month in Perry, Illinois, with an average temperature fluctuating between 66.7°F (19.3°C) and 84.4°F (29.1°C). The warmest month is July, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C). July's average heat index is estimated at a very hot 95°F (35°C). Weather in July »Weather in August
August, the last month of the summer in Perry, is another warm month, with an average temperature fluctuating between 83.5°F (28.6°C) and 65.5°F (18.6°C). With the transition into August, Perry notes an average high-temperature of a still warm 83.5°F (28.6°C), closely resembling July. Weather in August »Weather in September
September, the first month of the autumn in Perry, is also a moderately hot month, with an average temperature ranging between min 58.6°F (14.8°C) and max 78.3°F (25.7°C). The advent of September brings an average high-temperature of a still moderately hot 78.3°F (25.7°C), exhibiting minor difference from the previous month. Weather in September »Weather in October
October, like September, in Perry, Illinois, is another comfortable autumn month, with an average temperature fluctuating between 47.3°F (8.5°C) and 64.2°F (17.9°C). In Perry, the average high-temperature in October drops from a warm 78.3°F (25.7°C) in September to a refreshing 64.2°F (17.9°C). Weather in October »Weather in November
November, the last month of the autumn in Perry, is also a fresh month, with an average temperature ranging between max 50.9°F (10.5°C) and min 36.3°F (2.4°C). As November begins, there is a decrease in the average high-temperature, falling from a comfortable 64.2°F (17.9°C) in October to a fresh 50.9°F (10.5°C). Weather in November »Weather in December
December, the first month of the winter in Perry, is also an icy month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 39°F (3.9°C). As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a cool 50.9°F (10.5°C) to an icy 39°F (3.9°C). Weather in December »Updated: Aug 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
January tends to be the coldest month, with temperatures averaging a daily high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C).
Throughout the year, there are 128.8 rainfall days, and 18.35" (466mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
The month with the most snowfall is January, when snow falls for 6.3 days and typically aggregates up to 2.05" (52mm) of snow.
In Perry, during the entire year, snow falls for 21.9 days and aggregates up to 5.67" (144mm) of snow.
January has the least sunshine of the year, with an average of 4.4h of sunshine.
The months with the lowest UV index in Perry are January, February, November and December, with an average maximum UV index of 2.
The month with the least rainfall is February, when the rain falls for 5.8 days and typically collects 0.75" (19mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Perry, 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.
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.44" (62mm) of precipitation.
In Perry, snow does not fall in May through October.
The months with the highest humidity are June and July, with an average relative humidity of 81%.
The month with the longest days is June, with an average of 14h and 54min of daylight.
June and July, with an average of 10.3h of sunshine, are months with the most sunshine.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
In Perry, July records the average highest temperatures, peaking at 84.4°F (29.1°C) and reaching a low of 66.7°F (19.3°C).
The least humid month is October, with an average relative humidity of 71%.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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
Perry, 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).
