Climate and monthly weather forecastMount Sulphur, TN
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Mount Sulphur, Tennessee, with an average temperature fluctuating between 44.6°F (7°C) and 29.5°F (-1.4°C). In Mount Sulphur, January is the coldest month, with temperatures averaging a high of 44.6°F (7°C) and a low of 29.5°F (-1.4°C). Weather in January »Weather in February
February, the last month of the winter in Mount Sulphur, is also a frosty month, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 49.5°F (9.7°C). Mount Sulphur experiences an average high-temperature of a still frosty 49.5°F (9.7°C) in February, subtly different from January's 44.6°F (7°C). Weather in February »Weather in March
March, the first month of the spring in Mount Sulphur, is a mild month, with temperature in the range of an average high of 57.6°F (14.2°C) and an average low of 40.1°F (4.5°C). As Mount Sulphur welcomes March, the average high-temperature displays a subtle shift, adjusting from a chilly 49.5°F (9.7°C) in February to a moderate 57.6°F (14.2°C). Weather in March »Weather in April
April is a pleasant spring month in Mount Sulphur, Tennessee, with an average temperature ranging between max 68°F (20°C) and min 47.8°F (8.8°C). As April arrives, Mount Sulphur's weather shows an increase in high-temperatures, moving from March's mild 57.6°F (14.2°C) to an agreeable 68°F (20°C). Weather in April »Weather in May
May, the last month of the spring in Mount Sulphur, is a moderately hot month, with an average temperature varying between 55.9°F (13.3°C) and 76.6°F (24.8°C). Mount Sulphur's transition into May sees a mild rise in the average high-temperature, edging from an agreeable 68°F (20°C) in April to a warm 76.6°F (24.8°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Mount Sulphur, Tennessee, with an average temperature varying between 62.2°F (16.8°C) and 83.8°F (28.8°C). The shift into June is characterized by a subtle rise in the average high-temperature, transitioning from May's 76.6°F (24.8°C) to a still moderately hot 83.8°F (28.8°C). Weather in June »Weather in July
July in Mount Sulphur, Tennessee, is a hot summer month, with an average temperature varying between 65.3°F (18.5°C) and 86.5°F (30.3°C). July, noted for its average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 65.3°F (18.5°C), is considered the warmest month. The heat index in July is computed to be a torrid 100.4°F (38°C). Weather in July »Weather in August
August, the last month of the summer in Mount Sulphur, is also a moderately hot month, with an average temperature varying between 64°F (17.8°C) and 85.6°F (29.8°C). The arrival of August sees an average high-temperature of a warm 85.6°F (29.8°C), hardly diverging from July's 86.5°F (30.3°C). Weather in August »Weather in September
September, the first month of the autumn in Mount Sulphur, is also a moderately hot month, with an average temperature fluctuating between 59.2°F (15.1°C) and 79.9°F (26.6°C). The arrival of September correlates with a minor temperature reduction, down from August's warm 85.6°F (29.8°C) to a still moderately hot 79.9°F (26.6°C). Weather in September »Weather in October
October, the same as September, in Mount Sulphur, Tennessee, is another pleasant autumn month, with an average temperature ranging between max 68.2°F (20.1°C) and min 48.7°F (9.3°C). As September transitions to October, the average high-temperature falls from a moderately hot 79.9°F (26.6°C) to an agreeable 68.2°F (20.1°C). Weather in October »Weather in November
November, the last month of the autumn in Mount Sulphur, is another mild month, with an average temperature ranging between max 56.3°F (13.5°C) and min 38.8°F (3.8°C). With November's arrival, Mount Sulphur's weather changes as the average high-temperature falls from a pleasant 68.2°F (20.1°C) in October to a moderate 56.3°F (13.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Mount Sulphur, Tennessee, with an average temperature ranging between max 48.6°F (9.2°C) and min 34.7°F (1.5°C). The average high-temperature slightly decreases in December, shifting from a moderate 56.3°F (13.5°C) in November to a frosty 48.6°F (9.2°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Mount Sulphur, TN
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (44.6°F).
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure
Mount Sulphur, TN
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30"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:
30.15"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Mount Sulphur, TN
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.6mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.2mph - Average wind speed in June:
4.5mph
- Average wind speed in July:
3.9mph - Average wind speed in August:
3.9mph - Average wind speed in September:
4.2mph - Average wind speed in October:
5.1mph - Average wind speed in November:
5.5mph - Average wind speed in December:
6mph
The windiest months (with the highest average wind speed) are February and April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (3.9mph).
Average humidity
Mount Sulphur, TN
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall
Mount Sulphur, TN
- Average rainfall in January:
3.15" - Average rainfall in February:
4.17" - Average rainfall in March:
3.43" - Average rainfall in April:
3.66" - Average rainfall in May:
3.19" - Average rainfall in June:
3.23"
- Average rainfall in July:
4.21" - Average rainfall in August:
3.39" - Average rainfall in September:
2.52" - Average rainfall in October:
2.99" - Average rainfall in November:
2.6" - Average rainfall in December:
3.98"
The wettest month (with the highest rainfall) is July (4.21").
The driest month (with the least rainfall) is September (2.52").
Average rainfall days
Mount Sulphur, TN
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
13.3 days - Average rainfall days in March:
16.3 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
19.2 days - Average rainfall days in August:
17.9 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is November (9.5 days).
Average snowfall
Mount Sulphur, TN
The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Mount Sulphur, TN
- Average snowfall days in January:
3.8 days - Average snowfall days in February:
2.9 days - Average snowfall days in March:
1.8 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:
0.1 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mount Sulphur, TN
- Average daylight in January:
10h and 6min - 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 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
6h and 0min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 36min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
9h and 30min - Average sunshine in September:
8h and 30min - Average sunshine in October:
7h and 0min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days
Mount Sulphur, TN
- Average sunshine days in January:
15.9 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
12.2 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.1 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
10 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
14.6 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
18.8 days - Average sunshine days in December:
16 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (10 days).
Average UV index
Mount Sulphur, 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
Mount Sulphur, TN
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility
Mount Sulphur, TN
The months with the highest visibility are February, April, June, October and November (6mi).
The months with the lowest visibility are January, March, May, July, August, September and December (5mi).





