Climate and monthly weather forecast
Mercer, TN

Weather in January

January, like December, is another chilly winter month in Mercer, Tennessee, with an average temperature varying between 45.7°F (7.6°C) and 32°F (0°C). With an average high-temperature of 45.7°F (7.6°C) and an average low-temperature of 32°F (0°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is a fresh month in Mercer, Tennessee, with an average temperature ranging between max 50.4°F (10.2°C) and min 36.1°F (2.3°C). In Mercer, the average high-temperature in February is almost the same as in January - a cool 50.4°F (10.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a mild month in Mercer, Tennessee, with an average temperature fluctuating between 43.3°F (6.3°C) and 59.5°F (15.3°C). In March, the average high-temperature increases from a fresh 50.4°F (10.2°C) in February to a moderate 59.5°F (15.3°C). Weather in March »

Weather in April

April is an agreeable spring month in Mercer, Tennessee, with an average temperature ranging between min 51.6°F (10.9°C) and max 69.4°F (20.8°C). In April, the average high-temperature rises from a moderate 59.5°F (15.3°C) in March to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Mercer, Tennessee, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 60.4°F (15.8°C). In Mercer, the average high-temperature in May marginally rises from a pleasant 69.4°F (20.8°C) in April to a warm 77.5°F (25.3°C). Weather in May »

Weather in June

June, the first month of the summer in Mercer, is still a warm month, with an average temperature fluctuating between 85.8°F (29.9°C) and 68°F (20°C). In June, the average high-temperature slightly increases from a moderately hot 77.5°F (25.3°C) in May to a still warm 85.8°F (29.9°C). Weather in June »

Weather in July

July in Mercer, Tennessee, is a hot summer month, with temperature in the range of an average low of 70°F (21.1°C) and an average high of 87.6°F (30.9°C). July is the warmest month, with an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 70°F (21.1°C). The average heat index in July is appraised at a scorching 104°F (40°C). Weather in July »

Weather in August

August, the last month of the summer in Mercer, is another tropical month, with an average temperature fluctuating between 69.1°F (20.6°C) and 87.4°F (30.8°C). In August, the average high-temperature is essentially the same as in July - a still tropical 87.4°F (30.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Mercer, is also a moderately hot month, with temperature in the range of an average low of 63.5°F (17.5°C) and an average high of 82.9°F (28.3°C). In Mercer, the average high-temperature in September is practically the same as in August - a moderately hot 82.9°F (28.3°C). Weather in September »

Weather in October

October, the same as September, in Mercer, Tennessee, is an agreeable autumn month, with an average temperature ranging between max 71.1°F (21.7°C) and min 51.8°F (11°C). In Mercer, the average high-temperature in October decreases from a warm 82.9°F (28.3°C) in September to an agreeable 71.1°F (21.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Mercer, Tennessee, with an average temperature fluctuating between 41.9°F (5.5°C) and 57.7°F (14.3°C). In November, the average high-temperature drops from an agreeable 71.1°F (21.7°C) in October to a mild 57.7°F (14.3°C). Weather in November »

Weather in December

December, the first month of the winter in Mercer, is still a chilly month, with an average temperature fluctuating between 49.5°F (9.7°C) and 36.7°F (2.6°C). In Mercer, the average high-temperature in December slightly decreases from a moderate 57.7°F (14.3°C) in November to a frosty 49.5°F (9.7°C). Weather in December »
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FAQ

What is the coldest month in Mercer?

January is the coldest month in Mercer, Tennessee, with an average high-temperature of 45.7°F (7.6°C) and an average low-temperature of 32°F (0°C).

How many days does it rain in Mercer?

In Mercer, Tennessee, during the entire year, the rain falls for 125.3 days and collects up to 15.47" (393mm) of precipitation.

When does it snow in Mercer?

January through March, November and December are months with snowfall in Mercer.

How many days does it snow in Mercer?

In Mercer, Tennessee, during the entire year, snow falls for 6.2 days and aggregates up to 1.14" (29mm) of snow.

What is the month with the least sunshine in Mercer?

February has the least sunshine of the year, with an average of 4.7h of sunshine.

What is the most humid month in Mercer?

With an average relative humidity of 80%, March is the most humid month.

When is Daylight Saving Time (DST) in Mercer?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

When it does not snow in Mercer?

In Mercer, snow does not fall in April through October.

When are the longest days in Mercer?

June has the longest days of the year in Mercer, with an average of 14h and 31min of daylight.

What month has the most sunshine in Mercer?

June has the most sunshine of the year, with an average of 10.7h of sunshine.

What are the months with the highest UV index in Mercer?

The months with the highest UV index in Mercer are June and July, with an average maximum UV index of 7.

What is the warmest month in Mercer?

The warmest month is July, with an average high-temperature of 87.6°F (30.9°C) and an average low-temperature of 70°F (21.1°C).

What is the wettest month in Mercer?

July is the month with the most rainfall in Mercer. Rain falls for 14.3 days and accumulates 1.85" (47mm) of precipitation.

What is the driest month in Mercer?

The month with the least rainfall in Mercer, Tennessee, is September, when the rain falls for 8.9 days and typically collects 0.67" (17mm) of precipitation.

What is the least humid month in Mercer?

With an average relative humidity of 71%, October is the least humid month in Mercer.

When does it snow the most in Mercer?

The month with the most snowfall is December, when snow falls for 0.9 days and typically aggregates up to 0.31" (8mm) of snow.

What is the month with the shortest days in Mercer?

The month with the shortest days in Mercer is December, with an average of 9h and 49min of daylight.

When is the lowest UV index in Mercer?

With an average maximum UV index of 2, December is the month with the lowest UV index in Mercer.

Average pressure
Mercer, TN

Average pressure - Mercer, TN

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed
Mercer, TN

Average wind speed - Mercer, TN

The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).

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Average rainfall
Mercer, TN

Average rainfall - Mercer, TN

The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.67").

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Average rainfall days
Mercer, TN

Average rainfall days - Mercer, TN

The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7.1 days).

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Average snowfall
Mercer, TN

Average snowfall - Mercer, TN

The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days
Mercer, TN

Average snowfall days - Mercer, TN

The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Mercer, TN

Average daylight / Average sunshine - Mercer, TN

The month with the longest days is June (Average daylight: 14h and 31min).
The month with the shortest days is December (Average daylight: 9h and 49min).

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days
Mercer, TN

Average sunshine days - Mercer, TN

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (13.8 days).

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Average visibility
Mercer, TN

Average visibility - Mercer, TN

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).

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