Climate and monthly weather forecastJohntown, TN
Climate and monthly weather forecast
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
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
In Johntown, during the entire year, the rain falls for 178.1 days and collects up to 37.99" (965mm) of precipitation.
Months with snowfall are January through April, October through December.
January is the month with the most snowfall. Snow falls for 5.4 days and accumulates 1.38" (35mm) of snow.
Throughout the year, there are 17.2 snowfall days, and 4.25" (108mm) of snow is accumulated.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
February, March, May and December, with an average relative humidity of 79%, are most humid months.
With an average of 4.4h of sunshine, February has the least sunshine of the year.
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.
May through September are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
With an average of 14h and 36min of daylight, June has the longest days of the year in Johntown.
June has the most sunshine of the year, with an average of 10.3h of sunshine.
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.
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.
The month with the least rainfall is September, when the rain falls for 14.2 days and typically collects 2.05" (52mm) of precipitation.
The months with the lowest humidity are October and November, with an average relative humidity of 75%.
With an average of 9h and 42min of daylight, December has the shortest days of the year.
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 in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.97"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"Hg
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 in January:
7.6mph - Average wind speed in February:
7.9mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.7mph - Average wind speed in May:
6mph - Average wind speed in June:
5.1mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.8mph - Average wind speed in October:
6mph - Average wind speed in November:
6.6mph - Average wind speed in December:
7.1mph
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
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 in January:
2.48" - Average rainfall in February:
3.62" - Average rainfall in March:
2.83" - Average rainfall in April:
3.43" - Average rainfall in May:
3.58" - Average rainfall in June:
3.98"
- Average rainfall in July:
4.53" - Average rainfall in August:
3.9" - Average rainfall in September:
2.05" - Average rainfall in October:
2.64" - Average rainfall in November:
2.13" - Average rainfall in December:
2.83"
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 in January:
12.4 days - Average rainfall days in February:
13.2 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
15 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
19.4 days - Average rainfall days in August:
18.3 days - Average rainfall days in September:
14.2 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
13.4 days
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
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 in January:
5.4 days - Average snowfall days in February:
5 days - Average snowfall days in March:
2 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:
0.3 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
3.1 days
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 in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
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).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 24min - Average sunshine in March:
5h and 30min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 30min
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 in January:
14.3 days - Average sunshine days in February:
11.4 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.9 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
14.2 days - Average sunshine days in October:
17.4 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
14.8 days
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
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 cloud cover
Johntown, TN
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 31).
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).
