Expand
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 Vandalia, Illinois, is an icy winter month, with an average temperature ranging between max 36°F (2.2°C) and min 23.4°F (-4.8°C). Vandalia records the coldest temperatures in January, averaging a high of 36°F (2.2°C) and a low of 23.4°F (-4.8°C). Weather in January »
Weather in February
February, the last month of the winter in Vandalia, is also an icy month, with an average temperature fluctuating between 27°F (-2.8°C) and 40.6°F (4.8°C). February's arrival registers an average high-temperature of a still icy 40.6°F (4.8°C), closely aligning with the temperature of the previous month. Weather in February »
Weather in March
March, the first month of the spring in Vandalia, is a fresh month, with an average temperature varying between 53.1°F (11.7°C) and 36.9°F (2.7°C). As February transitions into March, a change in temperatures is observed, with average highs moving from a wintry 40.6°F (4.8°C) to a cool 53.1°F (11.7°C). Weather in March »
Weather in April
April is a refreshing spring month in Vandalia, Illinois, with temperature in the range of an average low of 46.6°F (8.1°C) and an average high of 63.7°F (17.6°C). The onset of April brings a temperature shift, with the average high-temperature moving from a cool 53.1°F (11.7°C) in March to an enjoyable 63.7°F (17.6°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Vandalia, Illinois, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 73.6°F (23.1°C). An escalation in the average high-temperature is seen with the onset of May, moving from a comfortable 63.7°F (17.6°C) in April to a moderately hot 73.6°F (23.1°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Vandalia, Illinois, with an average temperature fluctuating between 82.4°F (28°C) and 65.7°F (18.7°C). June's onset witnesses a minor shift in the average high-temperature, moving from a moderately hot 73.6°F (23.1°C) in May to a still warm 82.4°F (28°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Vandalia, Illinois, with temperature in the range of an average high of 84°F (28.9°C) and an average low of 67.3°F (19.6°C). In Vandalia, the month of July is known for its highest average temperatures, reaching a high of 84°F (28.9°C) and a low of 67.3°F (19.6°C). During July, the heat index is appraised at a torrid 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Vandalia, Illinois, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 82.6°F (28.1°C). In the transition from July to August, Vandalia reports an average high-temperature of a still moderately hot 82.6°F (28.1°C), indicating a close resemblance to the prior month. Weather in August »
Weather in September
September, the first month of the autumn in Vandalia, is also a moderately hot month, with an average temperature ranging between min 59.4°F (15.2°C) and max 77.9°F (25.5°C). The beginning of September reveals an average high-temperature of a still warm 77.9°F (25.5°C), showing minimal deviation from the previous month. Weather in September »
Weather in October
October, like September, in Vandalia, Illinois, is another refreshing autumn month, with an average temperature varying between 48.6°F (9.2°C) and 65.1°F (18.4°C). October is characterized by a reduction in the average high-temperature, from a moderately hot 77.9°F (25.5°C) in September to an enjoyable 65.1°F (18.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Vandalia, Illinois, with an average temperature fluctuating between 37.2°F (2.9°C) and 51.8°F (11°C). The arrival of November indicates a decrease in the average high-temperature, moving from a refreshing 65.1°F (18.4°C) in October to a fresh 51.8°F (11°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Vandalia, Illinois, with an average temperature varying between 29.5°F (-1.4°C) and 41°F (5°C). The arrival of December corresponds with a shift in temperature, down from a fresh 51.8°F (11°C) in November to an icy 41°F (5°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Vandalia?
January is the coldest month in Vandalia, Illinois, with the temperature often reaching an average high of 36°F (2.2°C) and an average low of 23.4°F (-4.8°C).
How many days does it rain in Vandalia?
Throughout the year, in Vandalia, there are 164.1 rainfall days, and 36.73" (933mm) of precipitation is accumulated.
When does it snow in Vandalia?
January through April, November and December are months with snowfall in Vandalia.
How much does it snow in Vandalia?
In Vandalia, Illinois, during the entire year, snow falls for 25.1 days and aggregates up to 8.19" (208mm) of snow.
What is the month with the least sunshine in Vandalia?
January has the least sunshine of the year in Vandalia, with an average of 4.3h of sunshine.
What are the months with the lowest UV index in Vandalia?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Vandalia.
What is the driest month in Vandalia?
February is the month with the least rainfall. Rain falls for 9.6 days and accumulates 2.01" (51mm) of precipitation.
When is Daylight Saving Time (DST) in Vandalia?
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.
When it does not snow in Vandalia?
May through October are months without snowfall in Vandalia, Illinois.
What is the wettest month in Vandalia?
The month with the most rainfall is June, when the rain falls for 17.2 days and typically aggregates up to 4.57" (116mm) of precipitation.
When are the longest days in Vandalia?
June has the longest days of the year in Vandalia, with an average of 14h and 54min of daylight.
What month has the most sunshine in Vandalia?
The month with the most sunshine in Vandalia is June, with an average of 10.3h of sunshine.
What is the month with the highest UV index in Vandalia?
The months with the highest UV index in Vandalia, Illinois, are June through August, with an average maximum UV index of 6.
What part of the year is the hottest in Vandalia?
With average high temperatures of 84°F (28.9°C) and lows of 67.3°F (19.6°C), July is the warmest month in Vandalia, Illinois.
What is the most humid month in Vandalia?
With an average relative humidity of 81%, July is the most humid month in Vandalia.
What is the least humid month in Vandalia?
October is the least humid month in Vandalia, Illinois, with an average relative humidity of 71%.
When does it snow the most in Vandalia?
December is the month with the most snowfall. Snow falls for 5.1 days and accumulates 2.4" (61mm) of snow.
What is the month with the shortest days in Vandalia?
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Vandalia, IL
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
Vandalia, 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:
29.94"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"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:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Vandalia, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Vandalia, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Vandalia, IL
- Average rainfall in January:
2.36" - Average rainfall in February:
2.01" - Average rainfall in March:
2.99" - Average rainfall in April:
4.21" - Average rainfall in May:
4.09" - Average rainfall in June:
4.57"
- Average rainfall in July:
3.39" - Average rainfall in August:
3.07" - Average rainfall in September:
2.17" - Average rainfall in October:
3.11" - Average rainfall in November:
2.32" - Average rainfall in December:
2.44"
The wettest month (with the highest rainfall) is June (4.57").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days
Vandalia, IL
- Average rainfall days in January:
9.2 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
15.1 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
18 days - Average rainfall days in August:
15.6 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.2 days).
Average snowfall
Vandalia, IL
The month with the highest snowfall is December (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Vandalia, IL
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
7 days - Average snowfall days in March:
2.7 days - Average snowfall days in April:
0.5 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:
0.2 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
5.1 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Vandalia, 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 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - 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 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Vandalia, IL
- Average sunshine days in January:
15.5 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
8.6 days - Average sunshine days in August:
12 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
17 days - Average sunshine days in December:
16.6 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index
Vandalia, IL
The months with the highest UV index are 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
Vandalia, IL
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July and September (Cloud cover 30).
Average visibility
Vandalia, 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).
Vandalia, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
