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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 Anna, Illinois, is an icy winter month, with an average temperature varying between 39.7°F (4.3°C) and 26.8°F (-2.9°C). January, with its high-temperature average of 39.7°F (4.3°C) and a low-temperature average of 26.8°F (-2.9°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Anna, is a chilly month, with an average temperature fluctuating between 30.4°F (-0.9°C) and 44.6°F (7°C). Anna's February reports an average high-temperature of a chilly 44.6°F (7°C), exhibiting a minor difference from January. Weather in February »
Weather in March
March, the first month of the spring in Anna, is a moderate month, with an average temperature fluctuating between 39.4°F (4.1°C) and 55.6°F (13.1°C). March brings a rise in the average high-temperature, transitioning from February's chilly 44.6°F (7°C) to a mild 55.6°F (13.1°C). Weather in March »
Weather in April
April in Anna, Illinois, is a refreshing spring month, with temperature in the range of an average high of 66.6°F (19.2°C) and an average low of 48.9°F (9.4°C). Anna's weather in April shows a rise in the average high-temperature, moving up from March's moderate 55.6°F (13.1°C) to a still refreshing 66.6°F (19.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Anna, Illinois, with an average temperature varying between 58.1°F (14.5°C) and 75.7°F (24.3°C). In Anna, the average high-temperature in May increases from a refreshing 66.6°F (19.2°C) in April to a warm 75.7°F (24.3°C). Weather in May »
Weather in June
June, the first month of the summer in Anna, is also a moderately hot month, with an average temperature varying between 85.6°F (29.8°C) and 66.2°F (19°C). Anna sees an increase in the average high-temperature with the arrival of June, moving from May's 75.7°F (24.3°C) to a still moderately hot 85.6°F (29.8°C). Weather in June »
Weather in July
July in Anna, Illinois, is a tropical summer month, with an average temperature ranging between max 88.3°F (31.3°C) and min 69.1°F (20.6°C). With average temperatures fluctuating between a high of 88.3°F (31.3°C) and a low of 69.1°F (20.6°C), July stands out as the warmest month. Throughout July, the heat index is computed to be a scorching 104°F (40°C). Weather in July »
Weather in August
August, the last month of the summer in Anna, is another hot month, with an average temperature varying between 66.7°F (19.3°C) and 86.5°F (30.3°C). Anna experiences a minor change to a still tropical 86.5°F (30.3°C) in average high-temperature during August, closely reflecting July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Anna, Illinois, with an average temperature varying between 60.6°F (15.9°C) and 81°F (27.2°C). The beginning of September brings a minor change in the average high-temperature, shifting from a hot 86.5°F (30.3°C) in August to a warm 81°F (27.2°C). Weather in September »
Weather in October
October, like September, in Anna, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 67.8°F (19.9°C) and an average low of 49.5°F (9.7°C). In Anna, entering October brings a temperature decrement, reducing from September's warm 81°F (27.2°C) to an enjoyable 67.8°F (19.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Anna, Illinois, with an average temperature fluctuating between 38.7°F (3.7°C) and 54.5°F (12.5°C). With the onset of November, Anna experiences a modest temperature adjustment, with the average high-temperature receding from an enjoyable 67.8°F (19.9°C) in October to a cool 54.5°F (12.5°C). Weather in November »
Weather in December
December, the first month of the winter in Anna, is still a chilly month, with temperature in the range of an average low of 32.2°F (0.1°C) and an average high of 44.8°F (7.1°C). As Anna enters December, the average high-temperature decreases from the a fresh 54.5°F (12.5°C) of November to a chilly 44.8°F (7.1°C). Weather in December »
Updated: Aug 25, 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 time of the year is the coldest?
In Anna, January is known for its average lowest temperatures, reaching a high of 39.7°F (4.3°C) and a low of 26.8°F (-2.9°C).
How much does it rain?
Throughout the year, in Anna, there are 143 rainfall days, and 27.44" (697mm) of precipitation is accumulated.
When does it snow in Anna?
Months with snowfall are January through April, October through December.
How many days does it snow?
In Anna, during the entire year, snow falls for 14.9 days and aggregates up to 6.06" (154mm) of snow.
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?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Anna.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 3.9 days and typically aggregates up to 1.89" (48mm) of snow.
When is Daylight Saving Time (DST) in Anna?
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?
The month with the most rainfall in Anna is April, when the rain falls for 13.4 days and typically aggregates up to 3.31" (84mm) of precipitation.
What is the most humid month?
May is the most humid month, with an average relative humidity of 79%.
When it does not snow?
In Anna, snow does not fall in May through September.
When is the highest UV index in Anna?
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 warmest month?
July, with its average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 69.1°F (20.6°C), holds the record as the warmest month.
What month has the most sunshine?
With an average of 10.4h of sunshine, July has the most sunshine of the year.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 1.3" (33mm) of precipitation.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Anna, IL
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure
Anna, IL
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"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 (29.94"Hg).
Average wind speed
Anna, IL
- Average wind speed in January:
9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Anna, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Anna, IL
- Average rainfall in January:
1.57" - Average rainfall in February:
2.24" - Average rainfall in March:
2.48" - Average rainfall in April:
3.31" - Average rainfall in May:
2.95" - Average rainfall in June:
2.87"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.44" - Average rainfall in September:
1.3" - Average rainfall in October:
2.01" - Average rainfall in November:
1.97" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Anna, IL
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
14.8 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
8.7 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).
Average snowfall
Anna, IL
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Anna, IL
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
3.9 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.4 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:
2.6 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Anna, 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 3min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 3min - Average sunshine in October:
6h and 3min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days
Anna, IL
- Average sunshine days in January:
18.6 days - Average sunshine days in February:
14.7 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
13 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
21 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index
Anna, 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
Anna, IL
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility
Anna, 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).
Anna, Illinois, USA
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