Climate and monthly weather forecast
Marseilles, IL

Share

Weather in January

January, the same as December, in Marseilles, Illinois, is another subzero cold winter month, with an average temperature fluctuating between 29.1°F (-1.6°C) and 17.2°F (-8.2°C). January is the coldest month of the year, registering average temperatures as high as 29.1°F (-1.6°C) and as low as 17.2°F (-8.2°C). Weather in January »

Weather in February

The last month of the winter, February, is an icy month in Marseilles, Illinois, with an average temperature varying between 33.4°F (0.8°C) and 20.7°F (-6.3°C). Marseilles experiences an average high-temperature of a cold 33.4°F (0.8°C) with the onset of February, subtly varied from January's 29.1°F (-1.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Marseilles, Illinois, with an average temperature ranging between max 46.9°F (8.3°C) and min 32.5°F (0.3°C). As March begins, there is an increase in the average high-temperature, moving from an icy 33.4°F (0.8°C) in February to a frosty 46.9°F (8.3°C). Weather in March »

Weather in April

April is a moderate spring month in Marseilles, Illinois, with an average temperature ranging between max 58.8°F (14.9°C) and min 42.4°F (5.8°C). Marseilles in April sees a temperature change, with average high-temperatures moving from a frosty 46.9°F (8.3°C) in March to a mild 58.8°F (14.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Marseilles, Illinois, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 70.7°F (21.5°C). The shift into May is marked by a rise in the average high-temperature, moving from April's refreshing 58.8°F (14.9°C) 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 Marseilles, Illinois, with an average temperature ranging between min 61.5°F (16.4°C) and max 78.8°F (26°C). June sees a marginal temperature increase, moving from an agreeable 70.7°F (21.5°C) in May to a warm 78.8°F (26°C). Weather in June »

Weather in July

July, like June, in Marseilles, Illinois, is another warm summer month, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 64.2°F (17.9°C). The average temperatures reach their apex in July, averaging 81°F (27.2°C) at the high end and 64.2°F (17.9°C) at the low end. For most parts of July, the heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer in Marseilles, is also a moderately hot month, with an average temperature varying between 62.1°F (16.7°C) and 79.5°F (26.4°C). Marseilles experiences an average high-temperature of a still moderately hot 79.5°F (26.4°C) in August, marking an insignificant shift from 81°F (27.2°C) in July. Weather in August »

Weather in September

September, the first month of the autumn in Marseilles, is still a warm month, with an average temperature ranging between max 74.7°F (23.7°C) and min 56.3°F (13.5°C). As September takes hold, the average high-temperature is a still moderately hot 74.7°F (23.7°C), nearly mirroring that of the previous month. Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Marseilles, Illinois, with an average temperature fluctuating between 61.7°F (16.5°C) and 45.9°F (7.7°C). The transition into October indicates a reduction in the average high-temperature, down to an enjoyable 61.7°F (16.5°C) from September's moderately hot 74.7°F (23.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Marseilles, Illinois, with an average temperature varying between 33.8°F (1°C) and 47.1°F (8.4°C). November indicates a noticeable reduction in the average high-temperature, moving down from a refreshing 61.7°F (16.5°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 Marseilles, is also a wintry month, with an average temperature fluctuating between 25.2°F (-3.8°C) and 35.1°F (1.7°C). Marseilles's December weather comes with a decrease in average high-temperatures, moving from a chilly 47.1°F (8.4°C) in November to a wintry 35.1°F (1.7°C). Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Marseilles?

The coldest period tends to be January, when average temperatures fluctuate between a high of 29.1°F (-1.6°C) and a low of 17.2°F (-8.2°C).

How many days does it rain in Marseilles?

In Marseilles, Illinois, during the entire year, the rain falls for 154.1 days and collects up to 31.73" (806mm) of precipitation.

When does it snow in Marseilles?

Months with snowfall are January through April, October through December.

How many days does it snow in Marseilles?

In Marseilles, during the entire year, snow falls for 39.8 days and aggregates up to 15.71" (399mm) of snow.

What is the month with the least sunshine in Marseilles?

The month with the least sunshine in Marseilles is January, with an average of 3.9h of sunshine.

What is the month with the lowest UV index in Marseilles?

January is the month with the lowest UV index, with an average maximum UV index of 1.

When does it snow the most in Marseilles?

The month with the most snowfall in Marseilles, Illinois, is February, when snow falls for 9.7 days and typically aggregates up to 4.57" (116mm) of snow.

When is Daylight Saving Time (DST) in Marseilles?

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 wettest month in Marseilles?

The month with the most rainfall is May, when the rain falls for 18.3 days and typically aggregates up to 4.49" (114mm) of precipitation.

When it does not snow in Marseilles?

May through September are months without snowfall in Marseilles.

When are the longest days in Marseilles?

The month with the longest days in Marseilles is June, with an average of 15h and 6min of daylight.

What is the month with the most sunshine in Marseilles?

The months with the most sunshine in Marseilles are June and August, with an average of 9.8h of sunshine.

What is the month with the highest UV index in Marseilles?

The months with the highest UV index in Marseilles, Illinois, are June and July, with an average maximum UV index of 6.

What is the hottest time of year in Marseilles?

July registers as the month with the average highest temperatures, reaching 81°F (27.2°C) at its peak and 64.2°F (17.9°C) at the lowest.

What is the most humid month in Marseilles?

With an average relative humidity of 85%, July is the most humid month.

What is the least humid month in Marseilles?

The least humid month is October, with an average relative humidity of 72%.

What is the driest month in Marseilles?

The month with the least rainfall in Marseilles, Illinois, is December, when the rain falls for 7.6 days and typically collects 1.65" (42mm) of precipitation.

What is the month with the shortest days in Marseilles?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

Average temperature
Marseilles, IL

Average temperature - Marseilles, IL

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.1°F).

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

Average pressure
Marseilles, IL

Average pressure - Marseilles, IL

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed
Marseilles, IL

Average wind speed - Marseilles, IL

The windiest months (with the highest average wind speed) are January and April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity
Marseilles, IL

Average humidity - Marseilles, IL

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall
Marseilles, IL

Average rainfall - Marseilles, IL

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.65").

Average rainfall days
Marseilles, IL

Average rainfall days - Marseilles, IL

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).

Average snowfall
Marseilles, IL

Average snowfall - Marseilles, IL

The month with the highest snowfall is February (4.57").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Marseilles, IL

Average snowfall days - Marseilles, IL

The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Marseilles, IL

Average daylight / Average sunshine - Marseilles, IL

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 18min).

The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days
Marseilles, IL

Average sunshine days - Marseilles, IL

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (10.1 days).

Average visibility
Marseilles, IL

Average visibility - Marseilles, IL

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

Marseilles, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location