Climate and monthly weather forecast
Johntown, TN

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Weather in January

January, like December, is another chilly winter month in Johntown, Tennessee, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 29.5°F (-1.4°C). Johntown, Tennessee, records the coldest temperatures in January, averaging a high of 43.7°F (6.5°C) and a low of 29.5°F (-1.4°C). Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Johntown, Tennessee, with an average temperature ranging between min 33.1°F (0.6°C) and max 48.7°F (9.3°C). February's presence marks an average high-temperature of a still frosty 48.7°F (9.3°C), subtly varied from January's 43.7°F (6.5°C). Weather in February »

Weather in March

March, the first month of the spring in Johntown, is a refreshing month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 57.6°F (14.2°C). March witnesses a minor rise in the average high-temperature, transitioning from a frosty 48.7°F (9.3°C) in February to a moderate 57.6°F (14.2°C). Weather in March »

Weather in April

April is an agreeable spring month in Johntown, Tennessee, with an average temperature varying between 48.9°F (9.4°C) and 68.5°F (20.3°C). April's arrival signals a temperature shift, moving from a refreshing 57.6°F (14.2°C) in March to an agreeable 68.5°F (20.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Johntown, Tennessee, with an average temperature ranging between max 76.8°F (24.9°C) and min 57.2°F (14°C). In May, the average high-temperature marginally rises from a pleasant 68.5°F (20.3°C) in April to a moderately hot 76.8°F (24.9°C). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Johntown, Tennessee, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 84.9°F (29.4°C). The shift into June brings a slight increase in the average high-temperature, moving from a moderately hot 76.8°F (24.9°C) in May to a still warm 84.9°F (29.4°C). Weather in June »

Weather in July

July is a hot summer month in Johntown, Tennessee, with an average temperature varying between 86.9°F (30.5°C) and 67.3°F (19.6°C). In Johntown, the peak temperatures are generally noted in July, averaging a high of 86.9°F (30.5°C) and a low of 67.3°F (19.6°C). The heat index value for July is estimated at a fiery hot 102.2°F (39°C). Weather in July »

Weather in August

August, the last month of the summer in Johntown, is also a moderately hot month, with an average temperature ranging between max 85.6°F (29.8°C) and min 66.7°F (19.3°C). With the advent of August, Johntown's high-temperatures adjust to a warm 85.6°F (29.8°C), closely aligning with the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Johntown, is still a warm month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 61°F (16.1°C). In September, the average high-temperature marginally decreases from a moderately hot 85.6°F (29.8°C) in August to a still warm 80.2°F (26.8°C). Weather in September »

Weather in October

October, the same as September, in Johntown, Tennessee, is another pleasant autumn month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 68.7°F (20.4°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's warm 80.2°F (26.8°C) to a pleasant 68.7°F (20.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Johntown, is also a moderate month, with an average temperature varying between 39.2°F (4°C) and 56.3°F (13.5°C). The arrival of November signals a shift in temperature, down from an agreeable 68.7°F (20.4°C) in October to a refreshing 56.3°F (13.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Johntown, Tennessee, with an average temperature ranging between min 35.1°F (1.7°C) and max 47.8°F (8.8°C). In Johntown, the average high-temperature in December slightly decreases from a moderate 56.3°F (13.5°C) in November to a chilly 47.8°F (8.8°C). Weather in December »
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

The coldest month is January, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 29.5°F (-1.4°C).

How many days does it rain?

In Johntown, during the entire year, the rain falls for 178.1 days and collects up to 37.99" (965mm) of precipitation.

When does it snow?

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

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 5.4 days and accumulates 1.38" (35mm) of snow.

How many days does it snow?

Throughout the year, there are 17.2 snowfall days, and 4.25" (108mm) of snow is accumulated.

When is the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What is the most humid month?

February, March, May and December, with an average relative humidity of 79%, are most humid months.

What is the month with the least sunshine?

With an average of 4.4h of sunshine, February has the least sunshine of the year.

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?

May through September are months without snowfall.

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?

With an average of 14h and 36min of daylight, June has the longest days of the year in Johntown.

What month has the most sunshine?

June has the most sunshine of the year, with an average of 10.3h of sunshine.

What is the warmest month in Johntown?

July, with its average high-temperature of 86.9°F (30.5°C) and an average low-temperature of 67.3°F (19.6°C), holds the record as the warmest month.

What is the wettest month?

The month with the most rainfall in Johntown is July, when the rain falls for 19.4 days and typically aggregates up to 4.53" (115mm) of precipitation.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 14.2 days and typically collects 2.05" (52mm) of precipitation.

What are the least humid months?

The months with the lowest humidity are October and November, with an average relative humidity of 75%.

What is the month with the shortest days?

With an average of 9h and 42min of daylight, December has the shortest days of the year.

Average temperature
Johntown, TN

Average temperature - Johntown, TN

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (43.7°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 (29.5°F).

Average pressure
Johntown, TN

Average pressure - Johntown, TN

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed
Johntown, TN

Average wind speed - Johntown, TN

The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity
Johntown, TN

Average humidity - Johntown, TN

The months with the highest relative humidity are February, March, May and December (79%).
The months with the lowest relative humidity are October and November (75%).

Average rainfall
Johntown, TN

Average rainfall - Johntown, TN

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days
Johntown, TN

Average rainfall days - Johntown, TN

The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (9.7 days).

Average snowfall
Johntown, TN

Average snowfall - Johntown, TN

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Johntown, TN

Average snowfall days - Johntown, TN

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Johntown, TN

Average daylight / Average sunshine - Johntown, TN

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days
Johntown, TN

Average sunshine days - Johntown, TN

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (9.3 days).

Average UV index
Johntown, TN

Average UV index - Johntown, TN

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 and December (UV index 2).

Average visibility
Johntown, TN

Average visibility - Johntown, TN

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

Johntown, Tennessee, USA

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