Climate and monthly weather forecastSewanee, TN
Climate and monthly weather forecast
The climate of Sewanee
Sewanee, Tennessee, identifies with the Humid subtropical climate according to Köppen climate classification. This means that the area experiences no dry season and has a strong tendency towards humidity throughout the year, a characteristic feature of this Cfa climate type. Geographically, Sewanee is nestled in the midst of southern Middle Tennessee, USA.Across the span of a year, the average temperatures in Sewanee typically swing between 30°F (-1.1°C) and 85.6°F (29.8°C). The warmer temperatures can be expected from the months of May to September, where average temperatures surpass the 75.7°F (24.3°C) mark, peaking in July at 85.6°F (29.8°C). On the other hand, the colder months fall between November and March where temperatures drop below 44.2°F (6.8°C), with the lowest average temperature of 30°F (-1.1°C) making itself felt in January.
Rainfall is quite evenly protracted across all months, varying from 2.8" (71mm) to 5.51" (140mm). July hosts the most rainfall at 5.51" (140mm) whereas the least rainfall is observed in November contributing only 2.8" (71mm). Snowfall, however, is more restricted and is typically seen between the months of December and February, giving January the most snowfall at 2.99" (76mm).
The Best Time to Visit Sewanee
The best time to visit Sewanee would be dictated by what the traveler seeks. For those appreciative of warm weather, the months of May to September offer the warmest averages above 75.7°F (24.3°C). These months also see the longest daylight hours, spanning between 14 to 14.5 hours in June and July, accompanied by high levels of sunshine ranging from 9.3 hours to 10.3 hours per day.For those who have a penchant for more humid climates, June offers the most relative humidity at 78%. In combination with a respectable day-length of 14.5 hours and ample sunshine with the average hovering around 10.3 hours, it makes for quite a delightful weather.
The Worst Time to Visit Sewanee
Conversely, the months bookending the year, December and January, may not be the most inviting time to visit Sewanee. With the coldest average temperatures of 30°F (-1.1°C) in January and minimal daylight experienced during December at an average of 9.8 hours per day, these months may not be the most hospitable. Additionally, these months also have the least sunshine, with only 4.7 hours in December and January seeing slightly more at 5 hours per day.Spring Weather in Sewanee
Spring in Sewanee is characterized by a rapid climb in temperatures from a low of 40.8°F (4.9°C) in March to a high of 75.7°F (24.3°C) in May. This period also experiences increased rainfall ranging from 3.5" (89mm) in March to 4.21" (107mm) in May. Moreover, the daylight hours consistently increase across these months from 12 hours in March to 14 hours in May, complemented by an increase in sunshine hours from 5.6 hours in March to 9.3 hours in May.Summer Weather in Sewanee
During the summer months of June to August, Sewanee experiences its warmest temperatures, hitting an average high of 85.6°F (29.8°C) in July. Despite being the warmest time of year, these months receive a fair amount of rainfall cumulatively between 3.94" (100mm) and 5.51" (140mm). Daylight hovers around the maximum limit of 14.3 hours in July and August sees a slight decrease to 13.4 hours.Autumn Weather in Sewanee
Autumn brings about a drop in temperatures, descending from a high of 80.1°F (26.7°C) in September to a low of 48.9°F (9.4°C) in November. This period also sees reduced rainfall from 2.99" (76mm) in September to 2.8" (71mm) in November. Sunshine hours gradually decrease from 8.2 hours in September to 5.6 hours in November, following the shortening daylight hours from 12.4 hours to 10.3 hours during the same time.Winter Weather in Sewanee
Sewanee’s winter season introduces markedly colder temperatures ranging from 48.6°F (9.2°C) in December to a low of 30°F (-1.1°C) in January. This season also brings snowfall with 1.85" (47mm) in December and receeding to 0.39" (10mm) by February. This period, however, enjoys sustained levels of relative humidity at 81%, the highest seen throughout the year. The decrease in daylight hours to 9.8 hours in December and relative decrease in sunshine to 4.7 hours can be noted in these colder months.Weather in January
Starting the calendar year, January in Sewanee, Tennessee, USA, brings expectations of a wintry weather with considerable cloudiness. The month feels relatively cold, yet it does not register the lowest temperatures of the year. Weather in January »Weather in February
Moving into February, the weather in Sewanee remains wintry, yet experiences a slight warming up compared to January. The month shows a slightly increased rainfall, coupled with a noticeable decline in the number of snowfall days. Weather in February »Weather in March
March sees Sewanee transitioning from winter conditions toward spring. The weather starts to become noticeably milder compared to the earlier months. Rainfall prevails, with days getting increasingly longer and cloudiness slightly reducing. Weather in March »Weather in April
April in Sewanee sees a significant change in weather, signifying the full onset of spring. Temperatures rise, and the frequency of precipitation remains steady, balancing rainfall and sunshine hours. Differences become noticeable between nighttime and daytime temperatures. Weather in April »Weather in May
May continues to warm up in Sewanee, with weather showing signs of impending summer. The rise in temperatures is more perceptible, with an increase in both sunshine hours and the UV index. The chance of rainfall remains constant, and the pressure begins to slightly fall. Weather in May »Weather in June
June brings the official start of summer to Sewanee. The weather tends to be warm, and daylight reaches its longest period in the year. Expected rainfall decreases slightly, with a reduction in frequency as well. Both temperature and sunshine hours continue to rise. Weather in June »Weather in July
In July, Sewanee experiences its summer peak, with temperatures climbing further. The pattern of decreased rainfall persists throughout the month. Heatwaves might be experienced due to increasing temperature, but the relative humidity remains stable. Weather in July »Weather in August
August continues to ride the high summer heat in Sewanee. Although the temperatures start showing a minor decline, the overall warmth is still significant. Precipitation registers an uptick, causing increased cloud cover. Despite higher rainfall, the relative humidity remains steady. Weather in August »Weather in September
Entering September, Sewanee experiences a shift towards cooler weather as autumn approaches. Temperatures begin their descent from the summer highs, yet remain comfortably warm. Sunshine hours also start to take a downturn. A decrease in rainfall quantity is apparent when compared to August. Weather in September »Weather in October
October in Sewanee is characterized by a full-blown autumn atmosphere. The drop in temperature becomes more pronounced, coupled with shorter daylight hours. Weather becomes conducive for outdoor activities, with the balance of sunshine hours and adequate rainfall. Weather in October »Weather in November
November brings an air of winter to Sewanee, with substantial drops in temperature. The month shows a further decrease in daylight hours, and a noticeable rise in relative humidity. Rainfall occurs more sporadically than the previous month. Weather in November »Weather in December
December in Sewanee, Tennessee is typically chilly, rounding out the year with a return to winter weather. Temperatures continue to dip, with shorter days becoming the norm. In contrast to November, snowfall appears more significantly, while rainfall does not show any drastic changes. Weather in December »Updated: Feb 14, 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 time of the year in Sewanee is January, with temperatures averaging a high of 44.2°F (6.8°C) and a low of 30°F (-1.1°C).
In Sewanee, Tennessee, during the entire year, the rain falls for 191.9 days and collects up to 48.15" (1223mm) of precipitation.
January through April, October through December are months with snowfall.
Throughout the year, there are 20.1 snowfall days, and 7.72" (196mm) 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 is the month with the most snowfall in Sewanee, Tennessee. Snow falls for 5.4 days and accumulates 2.99" (76mm) of snow.
The month with the least sunshine in Sewanee is February, with an average of 4.5h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sewanee, 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.
In Sewanee, snow does not fall in May through September.
May through August, with an average maximum UV index of 6, are months with the highest UV index in Sewanee.
The month with the longest days is June, with an average of 14h and 30min of daylight.
The month with the most sunshine in Sewanee, Tennessee, is June, with an average of 10.3h of sunshine.
Sewanee witnesses the warmest weather in July, with temperatures averaging a high of 85.6°F (29.8°C) and a low of 66.2°F (19°C).
July is the month with the most rainfall. Rain falls for 22.5 days and accumulates 5.51" (140mm) of precipitation.
With an average relative humidity of 76%, October is the least humid month in Sewanee, Tennessee.
The month with the least rainfall in Sewanee, Tennessee, is November, when the rain falls for 10.4 days and typically collects 2.8" (71mm) of precipitation.
December is the most humid month in Sewanee, Tennessee, with an average relative humidity of 81%.
December has the shortest days of the year in Sewanee, with an average of 9h and 48min of daylight.
Average temperature
Sewanee, TN
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (44.2°F).
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure
Sewanee, TN
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.1"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 month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Sewanee, TN
- Average wind speed in January:
6.7mph - Average wind speed in February:
7mph - Average wind speed in March:
6.8mph - Average wind speed in April:
6.8mph - Average wind speed in May:
5.4mph - Average wind speed in June:
4.6mph
- Average wind speed in July:
4mph - Average wind speed in August:
4mph - Average wind speed in September:
4.3mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.8mph - Average wind speed in December:
6.3mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity
Sewanee, TN
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Sewanee, TN
- Average rainfall in January:
3.46" - Average rainfall in February:
4.8" - Average rainfall in March:
3.5" - Average rainfall in April:
4.33" - Average rainfall in May:
4.21" - Average rainfall in June:
3.94"
The wettest month (with the highest rainfall) is July (5.51").
The driest month (with the least rainfall) is November (2.8").
Average rainfall days
Sewanee, TN
- Average rainfall days in January:
12.7 days - Average rainfall days in February:
13.2 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
16.7 days - Average rainfall days in May:
19.8 days - Average rainfall days in June:
20.2 days
- Average rainfall days in July:
22.5 days - Average rainfall days in August:
20.5 days - Average rainfall days in September:
15.2 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (10.4 days).
Average snowfall
Sewanee, TN
The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Sewanee, TN
- Average snowfall days in January:
6.1 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
2.6 days - Average snowfall days in April:
0.4 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:
0.2 days - Average snowfall days in November:
1.8 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Sewanee, 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 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 24min - 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:
4h and 36min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 36min - Average sunshine in April:
8h and 48min - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 12min - Average sunshine in October:
7h and 0min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h 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 30min).
Average sunshine days
Sewanee, TN
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
12 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
7.8 days
- Average sunshine days in July:
6.3 days - Average sunshine days in August:
8.3 days - Average sunshine days in September:
12.4 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
14.6 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (6.3 days).
Average UV index
Sewanee, 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
Sewanee, TN
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are June and September (Cloud cover 33).
Average visibility
Sewanee, TN
The months with the highest visibility are June and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October and December (5mi).
