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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, the same as December, in Undercliff, Illinois, is a freezing cold winter month, with temperature in the range of an average low of 17.4°F (-8.1°C) and an average high of 29.3°F (-1.5°C). The lowest temperatures are recorded in January, with averages reaching a high of 29.3°F (-1.5°C) and a low of 17.4°F (-8.1°C). Weather in January »
Weather in February
February, the last month of the winter in Undercliff, is an icy month, with an average temperature varying between 33.4°F (0.8°C) and 21°F (-6.1°C). The onset of February brings an average high-temperature of an icy 33.4°F (0.8°C), nearly matching the January temperature. Weather in February »
Weather in March
March, the first month of the spring in Undercliff, is a frosty month, with an average temperature fluctuating between 33.1°F (0.6°C) and 47.7°F (8.7°C). In Undercliff, stepping into March brings a temperature increase, moving up from February's cold 33.4°F (0.8°C) to a frosty 47.7°F (8.7°C). Weather in March »
Weather in April
April in Undercliff, Illinois, is a moderate spring month, with an average temperature fluctuating between 59.4°F (15.2°C) and 43°F (6.1°C). The onset of April brings a temperature shift, with the average high-temperature moving from a frosty 47.7°F (8.7°C) in March to a moderate 59.4°F (15.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Undercliff, Illinois, with an average temperature ranging between max 71.1°F (21.7°C) and min 54°F (12.2°C). Undercliff's transition into May sees a rise in the average high-temperature, advancing from a mild 59.4°F (15.2°C) in April to an agreeable 71.1°F (21.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Undercliff, Illinois, with an average temperature fluctuating between 79°F (26.1°C) and 62.1°F (16.7°C). A gentle upsurge in temperatures occurs as May gives way to June, with average highs shifting from a pleasant 71.1°F (21.7°C) to a warm 79°F (26.1°C). Weather in June »
Weather in July
July, like June, in Undercliff, Illinois, is another warm summer month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 81°F (27.2°C). July, recording an average high temperature of 81°F (27.2°C) and a low temperature of 64.6°F (18.1°C), is Undercliff's warmest month. For July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Undercliff, is also a moderately hot month, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 62.2°F (16.8°C). August ushers in an average high-temperature of a still moderately hot 80.1°F (26.7°C), aligning closely with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Undercliff, is still a warm month, with an average temperature fluctuating between 56.5°F (13.6°C) and 75°F (23.9°C). The shift into September finds Undercliff at an average high-temperature of a still warm 75°F (23.9°C), closely comparable to August's conditions. Weather in September »
Weather in October
October, like September, in Undercliff, Illinois, is another comfortable autumn month, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 61.7°F (16.5°C). Arrival of October comes with a reduction in the average high-temperature, falling from a warm 75°F (23.9°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Undercliff, Illinois, with an average temperature varying between 47.3°F (8.5°C) and 34°F (1.1°C). The shift into November is marked by a considerable temperature decrease, with the average high-temperature dropping from a refreshing 61.7°F (16.5°C) in October to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Undercliff, Illinois, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 25.3°F (-3.7°C). Onset of December witnesses a reduction in the average high-temperature, falling from a chilly 47.3°F (8.5°C) in November to a wintry 35.6°F (2°C). Weather in December »
Updated: Feb 12, 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
What is the coldest month in Undercliff?
January, having an average high-temperature of 29.3°F (-1.5°C) and an average low-temperature of 17.4°F (-8.1°C), is the coldest month.
What is the driest month in Undercliff?
The months with the least rainfall in Undercliff are January and December Rain falls for 6.4 days and accumulates 1.57" (40mm) of rain.
How much does it rain in Undercliff?
In Undercliff, Illinois, during the entire year, the rain falls for 151.3 days and collects up to 30.16" (766mm) of precipitation.
When does it snow in Undercliff?
Months with snowfall are January through April, October through December.
How much does it snow in Undercliff?
Throughout the year, there are 36.7 snowfall days, and 14.09" (358mm) of snow is accumulated.
What is the month with the least sunshine in Undercliff?
The month with the least sunshine is January, with an average of 3.9h of sunshine.
When is the lowest UV index in Undercliff?
The month with the lowest UV index in Undercliff, Illinois, is January, with an average maximum UV index of 1.
What is the snowiest month in Undercliff?
The month with the most snowfall is February, when snow falls for 9.6 days and typically aggregates up to 3.7" (94mm) of snow.
When is Daylight Saving Time (DST) in Undercliff?
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.
What is the rainiest month in Undercliff?
The month with the most rainfall in Undercliff is May, when the rain falls for 18.4 days and typically aggregates up to 4.41" (112mm) of precipitation.
When it does not snow in Undercliff?
May through September are months without snowfall in Undercliff, Illinois.
When are the longest days in Undercliff?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What month has the most sunshine in Undercliff?
The month with the most sunshine in Undercliff is June, with an average of 10h of sunshine.
What is the month with the highest UV index in Undercliff?
The months with the highest UV index in Undercliff, Illinois, are June and July, with an average maximum UV index of 6.
What part of the year is the hottest in Undercliff?
The warmest temperatures in Undercliff, Illinois, occur during July, when averages reach a peak of 81°F (27.2°C) and a low of 64.6°F (18.1°C).
What is the most humid month in Undercliff?
With an average relative humidity of 85%, July is the most humid month in Undercliff, Illinois.
What is the least humid month in Undercliff?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days in Undercliff?
December has the shortest days of the year in Undercliff, with an average of 9h and 18min of daylight.
Average temperature
Undercliff, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure
Undercliff, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"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:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Undercliff, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Undercliff, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Undercliff, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.61" - Average rainfall in March:
2.17" - Average rainfall in April:
3.7" - Average rainfall in May:
4.41" - Average rainfall in June:
3.23"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.24" - Average rainfall in September:
2.24" - Average rainfall in October:
2.91" - Average rainfall in November:
1.73" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days
Undercliff, IL
- Average rainfall days in January:
6.4 days - Average rainfall days in February:
5.9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
17 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
14.7 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
12.6 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall
Undercliff, IL
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Undercliff, IL
- Average snowfall days in January:
11.2 days - Average snowfall days in February:
9.6 days - Average snowfall days in March:
4.8 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:
0.3 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Undercliff, IL
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 18min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Undercliff, IL
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
10.8 days - Average sunshine days in May:
10.7 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
15.9 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index
Undercliff, IL
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Undercliff, IL
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility
Undercliff, IL
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Undercliff, Illinois, USA
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