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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, is another cold winter month in Cave-In-Rock, Illinois, with an average temperature varying between 27.5°F (-2.5°C) and 40.5°F (4.7°C). With its high average temperature of 40.5°F (4.7°C) and a low of 27.5°F (-2.5°C), January is regarded as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Cave-In-Rock, Illinois, with an average temperature fluctuating between 45.5°F (7.5°C) and 31.3°F (-0.4°C). During February, Cave-In-Rock observes a subtle ascent to a frosty 45.5°F (7.5°C) from January's 40.5°F (4.7°C) in the average high-temperature. Weather in February »
Weather in March
March, the first month of the spring in Cave-In-Rock, is a refreshing month, with an average temperature varying between 40.3°F (4.6°C) and 55.8°F (13.2°C). As Cave-In-Rock transitions into March, a rise in the average high-temperature is observed, moving from a chilly 45.5°F (7.5°C) in February to a refreshing 55.8°F (13.2°C). Weather in March »
Weather in April
April is a refreshing spring month in Cave-In-Rock, Illinois, with an average temperature fluctuating between 66.7°F (19.3°C) and 48.9°F (9.4°C). With the beginning of April, Cave-In-Rock's average high-temperature sees an increase, transitioning from a mild 55.8°F (13.2°C) in March to an enjoyable 66.7°F (19.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Cave-In-Rock, Illinois, with an average temperature ranging between max 75.6°F (24.2°C) and min 58.5°F (14.7°C). The transition from April to May brings a subtle temperature rise, with average high-temperatures increasing from a comfortable 66.7°F (19.3°C) to a moderately hot 75.6°F (24.2°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Cave-In-Rock, Illinois, with an average temperature fluctuating between 83.8°F (28.8°C) and 66°F (18.9°C). Cave-In-Rock observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's 75.6°F (24.2°C) to a still warm 83.8°F (28.8°C). Weather in June »
Weather in July
July in Cave-In-Rock, Illinois, is a hot summer month, with temperature in the range of an average low of 68.5°F (20.3°C) and an average high of 86.5°F (30.3°C). July tends to be the warmest month, with temperatures averaging a daily high of 86.5°F (30.3°C) and a low of 68.5°F (20.3°C). The average heat index in July is computed to be a torrid 100.4°F (38°C). Weather in July »
Weather in August
August, the last month of the summer in Cave-In-Rock, is another warm month, with an average temperature varying between 85.3°F (29.6°C) and 66.7°F (19.3°C). The start of August sees the average high-temperature at a warm 85.3°F (29.6°C), showing little difference from July's 86.5°F (30.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Cave-In-Rock, Illinois, with an average temperature varying between 80.4°F (26.9°C) and 61.3°F (16.3°C). Cave-In-Rock starts September with an average high-temperature of a still warm 80.4°F (26.9°C), a minor shift from August's 85.3°F (29.6°C). Weather in September »
Weather in October
October, like September, is an agreeable autumn month in Cave-In-Rock, Illinois, with an average temperature fluctuating between 68°F (20°C) and 50°F (10°C). October's arrival corresponds with a decrease in average high-temperatures, from September's warm 80.4°F (26.9°C) to a pleasant 68°F (20°C). Weather in October »
Weather in November
November, the last month of the autumn in Cave-In-Rock, is also a fresh month, with an average temperature fluctuating between 54.5°F (12.5°C) and 39.7°F (4.3°C). The arrival of November corresponds with a temperature reduction, down from October's agreeable 68°F (20°C) to a cool 54.5°F (12.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Cave-In-Rock, Illinois, with an average temperature ranging between min 33.4°F (0.8°C) and max 45.5°F (7.5°C). Onset of December witnesses a reduction in the average high-temperature, falling from a cool 54.5°F (12.5°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
Updated: Aug 29, 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?
The coldest period tends to be January, when average temperatures fluctuate between a high of 40.5°F (4.7°C) and a low of 27.5°F (-2.5°C).
How many days does it rain in Cave-In-Rock?
Throughout the year, there are 148.8 rainfall days, and 27.05" (687mm) of precipitation is accumulated.
When does it snow in Cave-In-Rock?
January through April, November and December are months with snowfall.
How many days does it snow in Cave-In-Rock?
Throughout the year, there are 15 snowfall days, and 4.8" (122mm) of snow is accumulated.
What is the month with the least sunshine?
The months with the least sunshine are January and February, with an average of 4.6h of sunshine.
When is the lowest UV index?
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
What is the wettest month?
The month with the most rainfall is February, when the rain falls for 9.9 days and typically aggregates up to 3.03" (77mm) of precipitation.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 4.1 days and accumulates 1.57" (40mm) of snow.
When is Daylight Saving Time (DST)?
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 most humid month in Cave-In-Rock?
The most humid month is May, with an average relative humidity of 80%.
When it does not snow?
May through October are months without snowfall.
What are the months with the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
June has the longest days of the year, with an average of 14h and 42min of daylight.
What is the month with the most sunshine?
June and July, with an average of 10.5h of sunshine, are months with the most sunshine.
What part of the year is the hottest in Cave-In-Rock?
In Cave-In-Rock, July is identified by the average highest temperatures, reaching a peak of 86.5°F (30.3°C) and a low of 68.5°F (20.3°C).
What is the driest month?
September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 1.3" (33mm) of precipitation.
What is the least humid month?
With an average relative humidity of 71%, October is the least humid month.
What is the month with the shortest days in Cave-In-Rock?
The month with the shortest days is December, with an average of 9h and 36min of daylight.
Average temperature
Cave-In-Rock, IL
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.5°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure
Cave-In-Rock, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Cave-In-Rock, IL
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.4mph - Average wind speed in May:
7.7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.4mph - Average wind speed in October:
8mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity
Cave-In-Rock, IL
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Cave-In-Rock, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
3.03" - Average rainfall in March:
2.6" - Average rainfall in April:
2.91" - Average rainfall in May:
2.56" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.24" - Average rainfall in September:
1.3" - Average rainfall in October:
1.81" - Average rainfall in November:
2.13" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Cave-In-Rock, IL
- Average rainfall days in January:
9.1 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
10.8 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Cave-In-Rock, IL
The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Cave-In-Rock, IL
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
4.1 days - Average snowfall days in March:
1.7 days - Average snowfall days in April:
0.3 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
3.2 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Cave-In-Rock, 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 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - 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 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 4min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Cave-In-Rock, IL
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
15 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
12.9 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Cave-In-Rock, 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 and December (UV index 2).
Average cloud cover
Cave-In-Rock, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).
Average visibility
Cave-In-Rock, 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).
Cave-In-Rock, Illinois, USA
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