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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 Andover, Illinois, is a freezing cold winter month, with an average temperature ranging between min 16.5°F (-8.6°C) and max 28.2°F (-2.1°C). Andover notes the coldest temperatures in January, with a high average of 28.2°F (-2.1°C) and a low of 16.5°F (-8.6°C). Weather in January »
Weather in February
February, the last month of the winter in Andover, is an icy month, with temperature in the range of an average low of 20.3°F (-6.5°C) and an average high of 33.3°F (0.7°C). At the start of February, Andover's average high-temperature reaches an icy 33.3°F (0.7°C), subtly different from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Andover, Illinois, with an average temperature fluctuating between 32.4°F (0.2°C) and 47.1°F (8.4°C). March's onset brings a rise in the average high-temperature, moving from an icy 33.3°F (0.7°C) in February to a chilly 47.1°F (8.4°C). Weather in March »
Weather in April
April is a moderate spring month in Andover, Illinois, with an average temperature varying between 59.2°F (15.1°C) and 42.4°F (5.8°C). With the beginning of April, Andover's average high-temperature sees an increase, transitioning from a chilly 47.1°F (8.4°C) in March to a moderate 59.2°F (15.1°C). Weather in April »
Weather in May
May, the last month of the spring in Andover, is an agreeable month, with temperature in the range of an average low of 53.4°F (11.9°C) and an average high of 70.7°F (21.5°C). The transition from April to May brings a temperature rise, with average high-temperatures increasing from a moderate 59.2°F (15.1°C) to an agreeable 70.7°F (21.5°C). Weather in May »
Weather in June
June, the first month of the summer in Andover, is a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 78.8°F (26°C). The start of June signals a slight increase in the average high-temperature, moving from an agreeable 70.7°F (21.5°C) in May to a moderately hot 78.8°F (26°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Andover, Illinois, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 64.9°F (18.3°C). July, recording an average high temperature of 81.1°F (27.3°C) and a low temperature of 64.9°F (18.3°C), is Andover's warmest month. During July, the heat index is evaluated at a hot 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Andover, is another warm month, with an average temperature fluctuating between 80.2°F (26.8°C) and 63°F (17.2°C). The commencement of August brings an average high-temperature of a still warm 80.2°F (26.8°C), marking an inconsequential divergence from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Andover, Illinois, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 56.3°F (13.5°C). As September takes hold, the average high-temperature is a still moderately hot 75.4°F (24.1°C), nearly mirroring that of the previous month. Weather in September »
Weather in October
October, like September, in Andover, Illinois, is another enjoyable autumn month, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 61.3°F (16.3°C). October comes with a decrease in the average high-temperature, falling from a warm 75.4°F (24.1°C) in September to an enjoyable 61.3°F (16.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Andover, Illinois, with an average temperature fluctuating between 33.3°F (0.7°C) and 46.9°F (8.3°C). November is characterized by a noticeable reduction in the average high-temperature, falling from a refreshing 61.3°F (16.3°C) in October to a chilly 46.9°F (8.3°C). Weather in November »
Weather in December
December, the first month of the winter in Andover, is also an icy month, with an average temperature ranging between min 24.1°F (-4.4°C) and max 34.7°F (1.5°C). A change in temperatures is noted as November gives way to December, with average highs reducing from a chilly 46.9°F (8.3°C) to a cold 34.7°F (1.5°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Andover?
In Andover, January is the month with the lowest recorded average temperatures, measuring a high of 28.2°F (-2.1°C) and a low of 16.5°F (-8.6°C).
How much does it rain in Andover?
In Andover, during the entire year, the rain falls for 127.7 days and collects up to 17.8" (452mm) of precipitation.
When does it snow in Andover?
January through April, October through December are months with snowfall.
When does it snow the most in Andover?
The month with the most snowfall in Andover is January, when snow falls for 10.5 days and typically aggregates up to 2.17" (55mm) of snow.
How much does it snow in Andover?
In Andover, during the entire year, snow falls for 35.5 days and aggregates up to 7.95" (202mm) of snow.
What is the month with the least sunshine in Andover?
January has the least sunshine of the year in Andover, with an average of 4h of sunshine.
When is the lowest UV index in Andover?
With an average maximum UV index of 1, January is the month with the lowest UV index in Andover, Illinois.
When is Daylight Saving Time (DST) in Andover?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Andover, 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 Andover?
May is the month with the most rainfall in Andover, Illinois. Rain falls for 16.5 days and accumulates 2.76" (70mm) of precipitation.
When it does not snow in Andover?
May through September are months without snowfall in Andover.
When are the longest days in Andover?
The month with the longest days in Andover is June, with an average of 15h and 6min of daylight.
What is the month with the most sunshine in Andover?
The months with the most sunshine are June and July, with an average of 10.1h of sunshine.
What are the months with the highest UV index in Andover?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest in Andover?
July, with its average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 64.9°F (18.3°C), holds the record as the warmest month in Andover, Illinois.
What is the most humid month in Andover?
With an average relative humidity of 84%, July is the most humid month in Andover, Illinois.
What is the least humid month in Andover?
With an average relative humidity of 72%, October is the least humid month.
What is the driest month in Andover?
December is the month with the least rainfall in Andover. Rain falls for 6.5 days and accumulates 0.71" (18mm) of precipitation.
What is the month with the shortest days in Andover?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Andover, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.2°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure
Andover, IL
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"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:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"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
Andover, IL
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.6mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Andover, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Andover, IL
- Average rainfall in January:
0.75" - Average rainfall in February:
0.94" - Average rainfall in March:
1.14" - Average rainfall in April:
2.2" - Average rainfall in May:
2.76" - Average rainfall in June:
2.01"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.42" - Average rainfall in September:
1.26" - Average rainfall in October:
1.69" - Average rainfall in November:
1.02" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days
Andover, IL
- Average rainfall days in January:
4 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
11 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4 days).
Average snowfall
Andover, IL
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Andover, IL
- Average snowfall days in January:
10.5 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
1.5 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:
0.6 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
7.4 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Andover, 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:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Andover, IL
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
16 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
11.6 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
18 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).
Average UV index
Andover, 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
Andover, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Andover, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Andover, Illinois, USA
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