Climate and monthly weather forecast
Germantown, IL

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Weather in January

January, like December, in Germantown, Illinois, is a wintry winter month, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 37.2°F (2.9°C). January, marked by an average high-temperature of 37.2°F (2.9°C) and a low-temperature of 24.3°F (-4.3°C), is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Germantown, Illinois, with temperature in the range of an average high of 41.9°F (5.5°C) and an average low of 27.9°F (-2.3°C). The advent of February presents an average high-temperature of a still cold 41.9°F (5.5°C), maintaining a close correlation with the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Germantown, Illinois, with an average temperature fluctuating between 37.8°F (3.2°C) and 53.8°F (12.1°C). The shift from February to March brings an increase in the average high-temperature, moving from a cold 41.9°F (5.5°C) to a cool 53.8°F (12.1°C). Weather in March »

Weather in April

April is a refreshing spring month in Germantown, Illinois, with an average temperature varying between 47.5°F (8.6°C) and 64.6°F (18.1°C). Noticing a change, the average high-temperature during April moves from March's cool 53.8°F (12.1°C) to an enjoyable 64.6°F (18.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Germantown, Illinois, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 57.7°F (14.3°C). In Germantown, the average high-temperature in May increases from a comfortable 64.6°F (18.1°C) in April to a moderately hot 74.7°F (23.7°C). Weather in May »

Weather in June

June, the first month of the summer in Germantown, is also a moderately hot month, with an average temperature fluctuating between 83.3°F (28.5°C) and 66.4°F (19.1°C). June's arrival brings a slight change in high-temperatures, adjusting from a moderately hot 74.7°F (23.7°C) in May to a still warm 83.3°F (28.5°C). Weather in June »

Weather in July

July, like June, in Germantown, Illinois, is another warm summer month, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 85.1°F (29.5°C). July is the warmest month of the year, registering average temperatures as high as 85.1°F (29.5°C) and as low as 67.6°F (19.8°C). In July, the average heat index is computed to be a torrid 96.8°F (36°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Germantown, Illinois, with an average temperature ranging between min 65.8°F (18.8°C) and max 83.8°F (28.8°C). August records an average high-temperature of a still warm 83.8°F (28.8°C), indicating a minor variation from the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Germantown, is also a moderately hot month, with an average temperature varying between 78.6°F (25.9°C) and 59.9°F (15.5°C). The arrival of September sees a recorded average high-temperature of a still moderately hot 78.6°F (25.9°C), showing little divergence from the previous month's conditions. Weather in September »

Weather in October

October, like September, in Germantown, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 66°F (18.9°C) and an average low of 49.1°F (9.5°C). A moderate decline in the average high-temperature is seen during October, decreasing from a warm 78.6°F (25.9°C) in September to a refreshing 66°F (18.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Germantown, Illinois, with an average temperature ranging between min 37.8°F (3.2°C) and max 52.5°F (11.4°C). Germantown's progression into November involves a drop in the average high-temperature, receding from a refreshing 66°F (18.9°C) in October to a cool 52.5°F (11.4°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Germantown, Illinois, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 41.9°F (5.5°C). December indicates a shift in the average high-temperature, from November's cool 52.5°F (11.4°C) to a cold 41.9°F (5.5°C). Weather in December »
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

January is the coldest month of the year, registering average temperatures as high as 37.2°F (2.9°C) and as low as 24.3°F (-4.3°C).

How many days does it rain?

Throughout the year, there are 157.2 rainfall days, and 36.18" (919mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through April, November and December.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 7.5 days and accumulates 2.4" (61mm) of snow.

How many days does it snow?

Throughout the year, in Germantown, there are 22.4 snowfall days, and 7.83" (199mm) of snow is accumulated.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 4.5h of sunshine.

What is the month 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.

When it does not snow?

In Germantown, snow does not fall in May through October.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the wettest month?

The month with the most rainfall is June, when the rain falls for 15.7 days and typically aggregates up to 4.37" (111mm) of precipitation.

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?

June has the most sunshine of the year, with an average of 10.4h of sunshine.

What month is the hottest in Germantown?

With average high and low temperatures of 85.1°F (29.5°C) and 67.6°F (19.8°C) respectively, July is Germantown's warmest month.

What is the most humid month?

The months with the highest humidity are July and August, with an average relative humidity of 80%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.89" (48mm) of precipitation.

What is the least humid month?

With an average relative humidity of 71%, 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 30min of daylight.

Average temperature
Germantown, IL

Average temperature - Germantown, IL

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.2°F).

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure
Germantown, IL

Average pressure - Germantown, IL

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
Germantown, IL

Average wind speed - Germantown, IL

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity
Germantown, IL

Average humidity - Germantown, IL

The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Germantown, IL

Average rainfall - Germantown, IL

The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days
Germantown, IL

Average rainfall days - Germantown, IL

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (9.1 days).

Average snowfall
Germantown, IL

Average snowfall - Germantown, IL

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Germantown, IL

Average snowfall days - Germantown, IL

The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Germantown, IL

Average daylight / Average sunshine - Germantown, IL

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).

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days
Germantown, IL

Average sunshine days - Germantown, IL

The month with the most sunshine days is October (18 days).
The month with the least sunshine days is May (10.5 days).

Average UV index
Germantown, IL

Average UV index - Germantown, 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 visibility
Germantown, IL

Average visibility - Germantown, 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).

Germantown, Illinois, USA

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