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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, is a wintry winter month in Dundas, Illinois, with an average temperature fluctuating between 24.3°F (-4.3°C) and 36.7°F (2.6°C). In Dundas, the month of January registers the lowest temperatures, averaging 36.7°F (2.6°C) at the peak and 24.3°F (-4.3°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Dundas, is another cold month, with an average temperature ranging between max 41.7°F (5.4°C) and min 28.2°F (-2.1°C). February's presence marks an average high-temperature of a still wintry 41.7°F (5.4°C), subtly varied from January's 36.7°F (2.6°C). Weather in February »
Weather in March
March, the first month of the spring in Dundas, is a fresh month, with an average temperature fluctuating between 37.8°F (3.2°C) and 53.1°F (11.7°C). The onset of March marks an increase in the average high-temperature, moving from an icy 41.7°F (5.4°C) in February to a fresh 53.1°F (11.7°C). Weather in March »
Weather in April
April is a refreshing spring month in Dundas, Illinois, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 47.7°F (8.7°C). April's arrival brings a change in high-temperatures, moving from a cool 53.1°F (11.7°C) in March to a refreshing 64.2°F (17.9°C). Weather in April »
Weather in May
May, the last month of the spring in Dundas, is a warm month, with an average temperature ranging between max 73.9°F (23.3°C) and min 57.9°F (14.4°C). Dundas sees an increase in the average high-temperature with the arrival of May, moving from April's enjoyable 64.2°F (17.9°C) to a moderately hot 73.9°F (23.3°C). Weather in May »
Weather in June
June, the first month of the summer in Dundas, is also a moderately hot month, with an average temperature ranging between min 65.7°F (18.7°C) and max 82.2°F (27.9°C). The arrival of June introduces a minor uplift in high-temperatures, adjusting from 73.9°F (23.3°C) in May to a still warm 82.2°F (27.9°C). Weather in June »
Weather in July
July, like June, in Dundas, Illinois, is a moderately hot summer month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 67.5°F (19.7°C). July is the warmest month, with an average high-temperature of 84.2°F (29°C) and an average low-temperature of 67.5°F (19.7°C). The heat index in July is appraised at a sweltering 95°F (35°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Dundas, Illinois, with an average temperature ranging between max 82.8°F (28.2°C) and min 65.7°F (18.7°C). The transition into August notes an average high-temperature of a still warm 82.8°F (28.2°C), revealing a mild distinction from the 84.2°F (29°C) in July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Dundas, Illinois, with an average temperature varying between 59.9°F (15.5°C) and 78.1°F (25.6°C). The average high-temperature during September is a still warm 78.1°F (25.6°C), almost matching the conditions of the preceding month. Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Dundas, Illinois, with an average temperature varying between 65.8°F (18.8°C) and 49.3°F (9.6°C). The arrival of October corresponds with a temperature reduction, down from September's warm 78.1°F (25.6°C) to an enjoyable 65.8°F (18.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Dundas, is another cool month, with an average temperature fluctuating between 52°F (11.1°C) and 37.9°F (3.3°C). The decrease of average high-temperatures is mild in November, with a decline from an enjoyable 65.8°F (18.8°C) in October to a fresh 52°F (11.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Dundas, Illinois, with an average temperature ranging between max 41.5°F (5.3°C) and min 30.9°F (-0.6°C). Setting in of December comes with a decrease in the average high-temperature, moving from a cool 52°F (11.1°C) in November to an icy 41.5°F (5.3°C). Weather in December »
Updated: Aug 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?
January brings the lowest temperatures, with an average high of 36.7°F (2.6°C) and an average low of 24.3°F (-4.3°C).
How much does it rain?
Throughout the year, there are 152.3 rainfall days, and 27.99" (711mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through April, November and December.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 5.9 days and typically aggregates up to 1.54" (39mm) of snow.
How much does it snow?
In Dundas, during the entire year, snow falls for 20.3 days and aggregates up to 5.47" (139mm) of snow.
What is the month with the least sunshine?
With an average of 4.4h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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?
The month with the most rainfall is April, when the rain falls for 15.1 days and typically aggregates up to 4.09" (104mm) of precipitation.
When it does not snow?
In Dundas, snow does not fall in May through October.
What are the months with 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 month has the most sunshine?
The month with the most sunshine in Dundas is June, with an average of 10.6h of sunshine.
What part of the year is the hottest?
Dundas's warmest month, July, generally records average temperatures ranging from a high of 84.2°F (29°C) to a low of 67.5°F (19.7°C).
What is the most humid month?
With an average relative humidity of 81%, July is the most humid month.
What is the driest month?
September is the month with the least rainfall. Rain falls for 12.7 days and accumulates 1.54" (39mm) 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?
The month with the shortest days in Dundas is December, with an average of 9h and 30min of daylight.
Average temperature
Dundas, IL
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.7°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Dundas, 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:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"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:
30.13"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
Dundas, IL
- Average wind speed in January:
10.2mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are January and February (10.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity
Dundas, IL
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Dundas, IL
- Average rainfall in January:
1.93" - Average rainfall in February:
1.57" - Average rainfall in March:
2.32" - Average rainfall in April:
4.09" - Average rainfall in May:
2.99" - Average rainfall in June:
2.64"
- Average rainfall in July:
2.6" - Average rainfall in August:
2.13" - Average rainfall in September:
1.54" - Average rainfall in October:
2.13" - Average rainfall in November:
1.89" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days
Dundas, IL
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.3 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
10.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (8.8 days).
Average snowfall
Dundas, IL
The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Dundas, IL
- Average snowfall days in January:
5.9 days - Average snowfall days in February:
5.5 days - Average snowfall days in March:
2.5 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:
0.2 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Dundas, 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 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 48min).
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 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days
Dundas, IL
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
14 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
15.4 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is July (11.2 days).
Average UV index
Dundas, 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
Dundas, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility
Dundas, 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).
Dundas, Illinois, USA
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