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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, is a freezing cold winter month in Serena, Illinois, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 17.1°F (-8.3°C). January, recording an average high temperature of 28.8°F (-1.8°C) and a low temperature of 17.1°F (-8.3°C), is Serena's coldest month. Weather in January »
Weather in February
February, the last month of the winter in Serena, is a cold month, with an average temperature fluctuating between 33.1°F (0.6°C) and 19.9°F (-6.7°C). Serena's average high-temperature in February sits at a cold 33.1°F (0.6°C), showing little difference from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Serena, is a chilly month, with an average temperature varying between 32°F (0°C) and 46.4°F (8°C). As Serena transitions into March, the average high-temperature shows a change, moving from an icy 33.1°F (0.6°C) in February to a frosty 46.4°F (8°C). Weather in March »
Weather in April
April in Serena, Illinois, is a mild spring month, with an average temperature varying between 58.5°F (14.7°C) and 41.7°F (5.4°C). As April sets, the average high-temperature shows an increase, moving up from a chilly 46.4°F (8°C) in March to a mild 58.5°F (14.7°C). Weather in April »
Weather in May
May, the last month of the spring in Serena, is an agreeable month, with an average temperature fluctuating between 53.1°F (11.7°C) and 70.3°F (21.3°C). With the onset of May, the average high-temperature slightly shifts from April's mild 58.5°F (14.7°C) to a pleasant 70.3°F (21.3°C). Weather in May »
Weather in June
June, the first month of the summer in Serena, is a moderately hot month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 78.6°F (25.9°C). The shift from May to June introduces a subtle increase in the average high-temperature, moving from an agreeable 70.3°F (21.3°C) to a warm 78.6°F (25.9°C). Weather in June »
Weather in July
July, like June, in Serena, Illinois, is another warm summer month, with an average temperature varying between 81°F (27.2°C) and 64°F (17.8°C). July tends to be the warmest month, with temperatures averaging a daily high of 81°F (27.2°C) and a low of 64°F (17.8°C). The heat index value during July is appraised at a hot 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Serena, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.1°F (16.7°C). Serena sees the arrival of August with an average high-temperature of a still moderately hot 79.3°F (26.3°C), indicating a subtle variation from July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Serena, Illinois, with temperature in the range of an average high of 74.5°F (23.6°C) and an average low of 56.1°F (13.4°C). Serena ushers in September with an average high-temperature of a still moderately hot 74.5°F (23.6°C), showing a close resemblance to the previous month. Weather in September »
Weather in October
October, like September, in Serena, Illinois, is another comfortable autumn month, with an average temperature varying between 61.7°F (16.5°C) and 45.5°F (7.5°C). With the onset of October, Serena's average high-temperature adjusts, receding from September's moderately hot 74.5°F (23.6°C) to an enjoyable 61.7°F (16.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Serena, Illinois, with an average temperature ranging between max 46.8°F (8.2°C) and min 33.4°F (0.8°C). As October transitions into November, a clear downswing in temperatures is observed, with average highs retreating from a refreshing 61.7°F (16.5°C) to a chilly 46.8°F (8.2°C). Weather in November »
Weather in December
December, the first month of the winter in Serena, is also an icy month, with an average temperature ranging between min 24.8°F (-4°C) and max 34.7°F (1.5°C). The onset of December results in a decrease in the average high-temperature, receding from a chilly 46.8°F (8.2°C) in November to a cold 34.7°F (1.5°C). Weather in December »
Updated: Jun 9, 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?
January is the month when Serena experiences its coldest temperatures, averaging a high of 28.8°F (-1.8°C) and a low of 17.1°F (-8.3°C).
How much does it rain?
Throughout the year, there are 97.4 rainfall days, and 8.07" (205mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
When does it snow the most in Serena?
January is the month with the most snowfall. Snow falls for 8.3 days and accumulates 0.98" (25mm) of snow.
How many days does it snow?
Throughout the year, there are 26.1 snowfall days, and 3.54" (90mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.8h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Serena, 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.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 1.14" (29mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
June has the longest days of the year in Serena, with an average of 15h and 6min of daylight.
What is the month with the highest UV index in Serena?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months?
The highest temperatures are recorded in July, with averages reaching a high of 81°F (27.2°C) and a low of 64°F (17.8°C).
What is the most humid month?
The most humid month is July, with an average relative humidity of 85%.
What month has the most sunshine in Serena?
August has the most sunshine of the year, with an average of 9.8h of sunshine.
What is the least humid month?
With an average relative humidity of 73%, October is the least humid month.
What is the driest month?
November is the month with the least rainfall. Rain falls for 5.4 days and accumulates 0.35" (9mm) of precipitation.
What is the month with the shortest days in Serena?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Serena, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure
Serena, IL
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"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:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Serena, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Serena, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Serena, IL
- Average rainfall in January:
0.43" - Average rainfall in February:
0.39" - Average rainfall in March:
0.47" - Average rainfall in April:
1.02" - Average rainfall in May:
1.14" - Average rainfall in June:
0.87"
- Average rainfall in July:
0.98" - Average rainfall in August:
0.59" - Average rainfall in September:
0.63" - Average rainfall in October:
0.75" - Average rainfall in November:
0.35" - Average rainfall in December:
0.43"
The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").
Average rainfall days
Serena, IL
- Average rainfall days in January:
3 days - Average rainfall days in February:
3.5 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.5 days - Average rainfall days in June:
11.8 days
- Average rainfall days in July:
10.9 days - Average rainfall days in August:
9.8 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
5.4 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).
Average snowfall
Serena, IL
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Serena, IL
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
6.2 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1 days - Average snowfall days in May:
0.1 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:
0.4 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
4.8 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Serena, 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 1min
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 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Serena, IL
- Average sunshine days in January:
22.6 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
19.1 days - Average sunshine days in April:
16.5 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
15 days
- Average sunshine days in July:
15 days - Average sunshine days in August:
18.4 days - Average sunshine days in September:
20 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
22.2 days - Average sunshine days in December:
23 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).
Average UV index
Serena, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Serena, IL
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility
Serena, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Serena, Illinois, USA
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