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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 Annawan, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 16.7°F (-8.5°C). During the coldest month, January, temperatures average a high of 28.8°F (-1.8°C) and a low of 16.7°F (-8.5°C). Weather in January »
Weather in February
February, the last month of the winter in Annawan, is an icy month, with an average temperature ranging between min 20.5°F (-6.4°C) and max 33.3°F (0.7°C). The dawn of February sees an average high-temperature of a wintry 33.3°F (0.7°C), subtly contrasting with January's 28.8°F (-1.8°C). Weather in February »
Weather in March
March, the first month of the spring in Annawan, is a chilly month, with an average temperature varying between 47.1°F (8.4°C) and 32.4°F (0.2°C). A rise in the average high-temperature is observed during March, moving from a wintry 33.3°F (0.7°C) in February to a frosty 47.1°F (8.4°C). Weather in March »
Weather in April
April is a mild spring month in Annawan, Illinois, with an average temperature fluctuating between 42.4°F (5.8°C) and 59.2°F (15.1°C). April witnesses an increase in the average high-temperature, moving from a frosty 47.1°F (8.4°C) in March to a moderate 59.2°F (15.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Annawan, Illinois, with temperature in the range of an average low of 53.6°F (12°C) and an average high of 70.7°F (21.5°C). An escalation in the average high-temperature is seen with the onset of May, moving from a moderate 59.2°F (15.1°C) in April to an agreeable 70.7°F (21.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Annawan, Illinois, with an average temperature fluctuating between 78.6°F (25.9°C) and 62.1°F (16.7°C). A subtle rise in the average high-temperature is observed during June, adjusting from a pleasant 70.7°F (21.5°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Annawan, Illinois, with an average temperature ranging between min 64.6°F (18.1°C) and max 81°F (27.2°C). Temperature records mark July as the warmest month, with highs averaging 81°F (27.2°C) and lows at 64.6°F (18.1°C). July's average heat index is appraised at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Annawan, Illinois, with an average temperature ranging between min 62.6°F (17°C) and max 80.1°F (26.7°C). Annawan's average high-temperature in August is a still moderately hot 80.1°F (26.7°C), indicating a subtle variation from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Annawan, Illinois, with an average temperature varying between 56.3°F (13.5°C) and 74.8°F (23.8°C). September records an average high-temperature of a still warm 74.8°F (23.8°C), indicating a minor variation from the preceding month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Annawan, Illinois, with an average temperature varying between 61.3°F (16.3°C) and 45.5°F (7.5°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 74.8°F (23.8°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 another chilly month in Annawan, Illinois, with an average temperature fluctuating between 47.1°F (8.4°C) and 33.4°F (0.8°C). The onset of November brings a small change in high-temperatures, falling from an enjoyable 61.3°F (16.3°C) in October to a chilly 47.1°F (8.4°C). Weather in November »
Weather in December
December, the first month of the winter in Annawan, is also an icy month, with an average temperature varying between 24.1°F (-4.4°C) and 34.7°F (1.5°C). Onset of December comes with a temperature decline, the average high falling from a chilly 47.1°F (8.4°C) in November to a cold 34.7°F (1.5°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 time of the year is the coldest in Annawan?
January brings the lowest temperatures in Annawan, with an average high of 28.8°F (-1.8°C) and an average low of 16.7°F (-8.5°C).
What is the driest month in Annawan?
January and December are months with the least rain in Annawan, Illinois, when the rain falls for 6.1 days and typically aggregates up to 1.42" (36mm) of rain.
How many days does it rain in Annawan?
Throughout the year, in Annawan, there are 147.2 rainfall days, and 29.17" (741mm) of precipitation is accumulated.
When does it snow in Annawan?
Months with snowfall are January through April, October through December.
When does it snow the most in Annawan?
The month with the most snowfall in Annawan, Illinois, is January, when snow falls for 11.4 days and typically aggregates up to 3.66" (93mm) of snow.
How much does it snow in Annawan?
Throughout the year, there are 37 snowfall days, and 12.91" (328mm) of snow is accumulated.
What is the month with the least sunshine in Annawan?
The month with the least sunshine is January, with an average of 3.9h of sunshine.
What is the month with the lowest UV index in Annawan?
With an average maximum UV index of 1, January is the month with the lowest UV index.
When is Daylight Saving Time (DST) in Annawan?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Annawan, 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 wettest month in Annawan?
The month with the most rainfall in Annawan is May, when the rain falls for 18.3 days and typically aggregates up to 4.45" (113mm) of precipitation.
When it does not snow in Annawan?
May through September are months without snowfall.
When are the longest days in Annawan?
June has the longest days of the year in Annawan, Illinois, with an average of 15h and 6min of daylight.
What is the month with the most sunshine in Annawan?
The months with the most sunshine are June and July, with an average of 10h of sunshine.
When is the highest UV index in Annawan?
The months with the highest UV index in Annawan, Illinois, are June and July, with an average maximum UV index of 6.
What month is the hottest in Annawan?
Annawan's July weather, marked by an average high temperature of 81°F (27.2°C) and an average low temperature of 64.6°F (18.1°C), is the warmest in the year.
What is the most humid month in Annawan?
The most humid month is July, with an average relative humidity of 84%.
What is the least humid month in Annawan?
With an average relative humidity of 72%, October is the least humid month.
What is the month with the shortest days in Annawan?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Annawan, 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 (64.6°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Annawan, 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:
29.97"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
Annawan, 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:
7.9mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.4mph - 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
Annawan, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Annawan, IL
- Average rainfall in January:
1.42" - Average rainfall in February:
1.57" - Average rainfall in March:
2.05" - Average rainfall in April:
3.5" - Average rainfall in May:
4.45" - Average rainfall in June:
3.31"
- Average rainfall in July:
2.87" - Average rainfall in August:
2.01" - Average rainfall in September:
2.05" - Average rainfall in October:
2.72" - Average rainfall in November:
1.81" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.42").
Average rainfall days
Annawan, IL
- Average rainfall days in January:
6.1 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
7.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.6 days).
Average snowfall
Annawan, IL
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Annawan, IL
- Average snowfall days in January:
11.4 days - Average snowfall days in February:
9.1 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
1.2 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:
0.5 days - Average snowfall days in November:
3 days - Average snowfall days in December:
7.3 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Annawan, 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 1min - Average sunshine in March:
6h and 4min - 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:
10h and 0min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Annawan, IL
- Average sunshine days in January:
15.2 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
18 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.2 days).
Average UV index
Annawan, 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
Annawan, IL
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
Annawan, 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).
Annawan, Illinois, USA
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