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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Piasa, Illinois, is an icy winter month, with an average temperature fluctuating between 35.8°F (2.1°C) and 22.6°F (-5.2°C). January brings the lowest temperatures, with an average high of 35.8°F (2.1°C) and an average low of 22.6°F (-5.2°C). Weather in January »
Weather in February
February, the last month of the winter in Piasa, is also an icy month, with an average temperature fluctuating between 26.4°F (-3.1°C) and 40.6°F (4.8°C). The shift to February signals an average high-temperature of a still icy 40.6°F (4.8°C), subtly varied from January's 35.8°F (2.1°C). Weather in February »
Weather in March
March, the first month of the spring in Piasa, is a fresh month, with an average temperature ranging between max 52.3°F (11.3°C) and min 37°F (2.8°C). March comes with an increase, with the average high-temperature moving from a cold 40.6°F (4.8°C) in February to a fresh 52.3°F (11.3°C). Weather in March »
Weather in April
April is a refreshing spring month in Piasa, Illinois, with an average temperature ranging between max 64°F (17.8°C) and min 46.8°F (8.2°C). In Piasa, stepping into April brings a temperature increase, moving up from March's fresh 52.3°F (11.3°C) to an enjoyable 64°F (17.8°C). Weather in April »
Weather in May
May, the last month of the spring in Piasa, is a warm month, with an average temperature ranging between max 73.9°F (23.3°C) and min 56.8°F (13.8°C). May brings a rise in the average high-temperature, transitioning from April's enjoyable 64°F (17.8°C) to a moderately hot 73.9°F (23.3°C). Weather in May »
Weather in June
June, the first month of the summer in Piasa, is also a moderately hot month, with an average temperature fluctuating between 65.7°F (18.7°C) and 82.6°F (28.1°C). A slight uplift in the average high-temperature marks June, adjusting from May's 73.9°F (23.3°C) to a still moderately hot 82.6°F (28.1°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Piasa, Illinois, with an average temperature varying between 67.5°F (19.7°C) and 84.6°F (29.2°C). July, with an average high of 84.6°F (29.2°C) and a low of 67.5°F (19.7°C), signifies the warmest month of the year. The heat index value during July is calculated to be a fiery hot 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Piasa, Illinois, with an average temperature ranging between max 83.3°F (28.5°C) and min 65.5°F (18.6°C). Piasa records a slight change with August's average high-temperatures adjusting to a still warm 83.3°F (28.5°C) from July's 84.6°F (29.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Piasa, is also a moderately hot month, with an average temperature varying between 59.4°F (15.2°C) and 78.3°F (25.7°C). As September takes hold, the average high-temperature is a still warm 78.3°F (25.7°C), nearly mirroring that of the previous month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Piasa, Illinois, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 65.3°F (18.5°C). The onset of October entails a temperature shift, as the average high-temperature decreases from a moderately hot 78.3°F (25.7°C) in September to a comfortable 65.3°F (18.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Piasa, Illinois, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 36.7°F (2.6°C). November weather is marked by a drop in the average high-temperature, falling from a comfortable 65.3°F (18.5°C) in October to a fresh 51.6°F (10.9°C). Weather in November »
Weather in December
December, the first month of the winter in Piasa, is still a cold month, with an average temperature fluctuating between 40.6°F (4.8°C) and 29.3°F (-1.5°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 51.6°F (10.9°C) in November to a wintry 40.6°F (4.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Piasa?
January is the month when Piasa sees the average lowest temperatures, with a high of 35.8°F (2.1°C) and a low of 22.6°F (-5.2°C).
What is the driest month in Piasa?
The month with the least rainfall in Piasa is January, when the rain falls for 6.5 days and typically collects 1.46" (37mm) of precipitation.
How many days does it rain in Piasa?
Throughout the year, there are 141.9 rainfall days, and 27.36" (695mm) of precipitation is accumulated.
When does it snow in Piasa?
January through March, November and December are months with snowfall in Piasa.
How many days does it snow in Piasa?
Throughout the year, in Piasa, there are 19.8 snowfall days, and 7.91" (201mm) of snow is accumulated.
What is the month with the least sunshine in Piasa?
January has the least sunshine of the year in Piasa, Illinois, with an average of 4.4h of sunshine.
What are the months with the lowest UV index in Piasa?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the snowiest month in Piasa?
February is the month with the most snowfall. Snow falls for 5.9 days and accumulates 2.48" (63mm) of snow.
When is Daylight Saving Time (DST) in Piasa?
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.
When it does not snow in Piasa?
April through October are months without snowfall in Piasa, Illinois.
When is the highest UV index in Piasa?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Piasa, Illinois.
What is the rainiest month in Piasa?
The month with the most rainfall in Piasa is June, when the rain falls for 15.6 days and typically aggregates up to 3.35" (85mm) of precipitation.
When are the longest days in Piasa?
With an average of 14h and 54min of daylight, June has the longest days of the year in Piasa.
What month has the most sunshine in Piasa?
June has the most sunshine of the year, with an average of 10.3h of sunshine.
What time of the year is the hottest in Piasa?
July, with an average high of 84.6°F (29.2°C) and a low of 67.5°F (19.7°C), signifies the warmest month of the year.
What is the most humid month in Piasa?
With an average relative humidity of 81%, July is the most humid month.
What is the least humid month in Piasa?
October is the least humid month in Piasa, Illinois, with an average relative humidity of 71%.
What is the month with the shortest days in Piasa?
The month with the shortest days in Piasa, Illinois, is December, with an average of 9h and 30min of daylight.
Average temperature
Piasa, IL
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.8°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure
Piasa, 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:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Piasa, IL
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.5mph - Average wind speed in April:
9.5mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8.3mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity
Piasa, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Piasa, IL
- Average rainfall in January:
1.46" - Average rainfall in February:
1.5" - Average rainfall in March:
2.13" - Average rainfall in April:
2.91" - Average rainfall in May:
3.31" - Average rainfall in June:
3.35"
- Average rainfall in July:
2.68" - Average rainfall in August:
2.87" - Average rainfall in September:
1.81" - Average rainfall in October:
2.05" - Average rainfall in November:
1.69" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Piasa, IL
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
13.2 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (6.5 days).
Average snowfall
Piasa, IL
The month with the highest snowfall is February (2.48").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Piasa, IL
- Average snowfall days in January:
6.2 days - Average snowfall days in February:
5.9 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.1 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3.9 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Piasa, IL
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 3min
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 30min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
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 24min).
Average sunshine days
Piasa, IL
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
16.4 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
14 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
19.3 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is January (19.5 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Piasa, 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, November and December (UV index 2).
Average cloud cover
Piasa, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility
Piasa, 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).
Piasa, Illinois, USA
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