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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 Dahlgren, Illinois, is an icy winter month, with an average temperature fluctuating between 38.5°F (3.6°C) and 25.7°F (-3.5°C). Dahlgren's coldest temperatures are experienced in January, with average high temperatures of 38.5°F (3.6°C) and lows of 25.7°F (-3.5°C). Weather in January »
Weather in February
The last month of the winter, February, is a frosty month in Dahlgren, Illinois, with an average temperature fluctuating between 29.7°F (-1.3°C) and 43.5°F (6.4°C). Dahlgren's February showcases an average high-temperature of a chilly 43.5°F (6.4°C), hardly distinct from January's 38.5°F (3.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Dahlgren, Illinois, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 54.5°F (12.5°C). The transition to March introduces an increase in the average high-temperature, shifting from a frosty 43.5°F (6.4°C) in February to a cool 54.5°F (12.5°C). Weather in March »
Weather in April
April in Dahlgren, Illinois, is a refreshing spring month, with temperature in the range of an average high of 66°F (18.9°C) and an average low of 48.7°F (9.3°C). April shows a rise in the average high-temperature, moving from March's cool 54.5°F (12.5°C) to an enjoyable 66°F (18.9°C). Weather in April »
Weather in May
May, the last month of the spring in Dahlgren, is a moderately hot month, with temperature in the range of an average low of 58.3°F (14.6°C) and an average high of 75.2°F (24°C). The shift from April to May brings an increase in the average high-temperature, moving from a refreshing 66°F (18.9°C) to a warm 75.2°F (24°C). Weather in May »
Weather in June
June, the first month of the summer in Dahlgren, is also a moderately hot month, with an average temperature ranging between max 84.2°F (29°C) and min 66.6°F (19.2°C). The onset of June brings a temperature shift, with the average high-temperature moving from a moderately hot 75.2°F (24°C) in May to a still warm 84.2°F (29°C). Weather in June »
Weather in July
July in Dahlgren, Illinois, is a tropical summer month, with temperature in the range of an average high of 86.4°F (30.2°C) and an average low of 68.2°F (20.1°C). July is the warmest month of the year, registering average temperatures as high as 86.4°F (30.2°C) and as low as 68.2°F (20.1°C). For most parts of July, the heat index is appraised at a torrid 100.4°F (38°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Dahlgren, Illinois, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 84.9°F (29.4°C). The arrival of August brings an average high-temperature of a moderately hot 84.9°F (29.4°C), nearly identical to July's 86.4°F (30.2°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Dahlgren, Illinois, with an average temperature varying between 60.6°F (15.9°C) and 79.7°F (26.5°C). Dahlgren's shift from August to September is accompanied by an average high-temperature of a still warm 79.7°F (26.5°C), a slight deviation from 84.9°F (29.4°C). Weather in September »
Weather in October
October, like September, in Dahlgren, Illinois, is another enjoyable autumn month, with an average temperature varying between 49.6°F (9.8°C) and 67.1°F (19.5°C). A shift in the average high-temperature occurs in October, reducing from a warm 79.7°F (26.5°C) in September to a comfortable 67.1°F (19.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Dahlgren, is another cool month, with an average temperature fluctuating between 53.2°F (11.8°C) and 38.3°F (3.5°C). With the onset of November, Dahlgren's average high-temperature adjusts, receding from October's refreshing 67.1°F (19.5°C) to a fresh 53.2°F (11.8°C). Weather in November »
Weather in December
December, the first month of the winter in Dahlgren, is still a chilly month, with temperature in the range of an average low of 31.3°F (-0.4°C) and an average high of 43.3°F (6.3°C). The shift to December brings a decrease in the average high-temperature, falling from a fresh 53.2°F (11.8°C) in November to a chilly 43.3°F (6.3°C). Weather in December »
Updated: Jun 20, 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 month is the coldest?
Dahlgren, Illinois, records the coldest temperatures in January, averaging a high of 38.5°F (3.6°C) and a low of 25.7°F (-3.5°C).
How many days does it rain?
In Dahlgren, Illinois, during the entire year, the rain falls for 143.1 days and collects up to 29.65" (753mm) of precipitation.
When does it snow?
Months with snowfall are January through April, October through December.
How many days does it snow?
Throughout the year, there are 16.7 snowfall days, and 5.79" (147mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.4h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 4.6 days and accumulates 1.42" (36mm) 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 rainiest month in Dahlgren?
April is the month with the most rainfall. Rain falls for 14.3 days and accumulates 4.13" (105mm) of precipitation.
What is the most humid month in Dahlgren?
With an average relative humidity of 79%, May is the most humid month.
When it does not snow?
May through September are months without snowfall.
When is the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days?
The month with the longest days is June, with an average of 14h and 48min of daylight.
What are the months with the most sunshine?
The months with the most sunshine are June and July, with an average of 10.5h of sunshine.
What are the warmest months?
Dahlgren's July weather, with an average high temperature of 86.4°F (30.2°C) and an average low temperature of 68.2°F (20.1°C), tends to be the warmest of the year.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 1.57" (40mm) of precipitation.
What is the least humid month?
With an average relative humidity of 70%, October is the least humid month.
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
Dahlgren, IL
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.5°F).
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure
Dahlgren, 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:
30.03"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
Dahlgren, IL
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.4mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.1mph
The windiest months (with the highest average wind speed) are January, February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Dahlgren, IL
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Dahlgren, IL
- Average rainfall in January:
1.89" - Average rainfall in February:
2.17" - Average rainfall in March:
2.6" - Average rainfall in April:
4.13" - Average rainfall in May:
3.15" - Average rainfall in June:
2.91"
The wettest month (with the highest rainfall) is April (4.13").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
Dahlgren, IL
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
8.8 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is May (16.2 days).
The months with the least rainy days are January and February (8.3 days).
Average snowfall
Dahlgren, IL
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Dahlgren, IL
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.6 days - Average snowfall days in March:
2.3 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:
3.5 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Dahlgren, 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 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - 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 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 3min - Average sunshine in May:
9h and 1min - 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 2min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Dahlgren, IL
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
19.3 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.8 days).
Average UV index
Dahlgren, 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, November and December (UV index 2).
Average cloud cover
Dahlgren, IL
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility
Dahlgren, 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).
Dahlgren, Illinois, USA
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