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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Duncan, Tennessee, is a frosty winter month, with an average temperature fluctuating between 44.8°F (7.1°C) and 29.5°F (-1.4°C). January, with its average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 29.5°F (-1.4°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Duncan, Tennessee, with an average temperature fluctuating between 49.6°F (9.8°C) and 33.4°F (0.8°C). February is marked by an average high-temperature of a still frosty 49.6°F (9.8°C), almost identical to the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Duncan, is a mild month, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 57.7°F (14.3°C). The shift from February to March is marked by a slight increase in the average high-temperature, moving from a frosty 49.6°F (9.8°C) to a refreshing 57.7°F (14.3°C). Weather in March »
Weather in April
April is a pleasant spring month in Duncan, Tennessee, with an average temperature varying between 68.5°F (20.3°C) and 47.8°F (8.8°C). As April arrives, a rise in the average high-temperature is observed, moving from a mild 57.7°F (14.3°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 moderately hot month in Duncan, Tennessee, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 77.5°F (25.3°C). Noticing a change, the average high-temperature during May moves from April's pleasant 68.5°F (20.3°C) to a warm 77.5°F (25.3°C). Weather in May »
Weather in June
The first month of the summer, June, is still a warm month in Duncan, Tennessee, with an average temperature ranging between max 84.6°F (29.2°C) and min 61.9°F (16.6°C). As Duncan transitions into June, the average high-temperature is observed to slightly rise from a warm 77.5°F (25.3°C) in May to a still moderately hot 84.6°F (29.2°C). Weather in June »
Weather in July
July is a hot summer month in Duncan, Tennessee, with an average temperature varying between 65.5°F (18.6°C) and 87.6°F (30.9°C). Duncan notes the warmest temperatures in July, with a high average of 87.6°F (30.9°C) and a low of 65.5°F (18.6°C). During July, the heat index is evaluated at a very hot 100.4°F (38°C). Weather in July »
Weather in August
The last month of the summer, August, is another hot month in Duncan, Tennessee, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 86.7°F (30.4°C). August's advent denotes a minor fluctuation in the average high-temperature to a still hot 86.7°F (30.4°C) from July's 87.6°F (30.9°C). Weather in August »
Weather in September
September, the first month of the autumn in Duncan, is still a warm month, with an average temperature varying between 59.9°F (15.5°C) and 81.1°F (27.3°C). Duncan's transition into September involves a gentle shift in temperature, receding from a hot 86.7°F (30.4°C) in August to a moderately hot 81.1°F (27.3°C). Weather in September »
Weather in October
October, like September, is an agreeable autumn month in Duncan, Tennessee, with temperature in the range of an average high of 69.1°F (20.6°C) and an average low of 48.4°F (9.1°C). As September transitions into October, Duncan sees a drop in the average high-temperature, transitioning from a warm 81.1°F (27.3°C) to an agreeable 69.1°F (20.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Duncan, is another mild month, with an average temperature varying between 39.2°F (4°C) and 57.2°F (14°C). Duncan in November demonstrates a small temperature transition, adjusting from an average high of a pleasant 69.1°F (20.6°C) in October to a refreshing 57.2°F (14°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Duncan, Tennessee, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 49.5°F (9.7°C). December's arrival signals a moderate reduction in the average high-temperature, easing from a moderate 57.2°F (14°C) in November to a frosty 49.5°F (9.7°C). Weather in December »
Updated: Aug 27, 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
What is the coldest time of year?
January is the month when Duncan sees the average lowest temperatures, with a high of 44.8°F (7.1°C) and a low of 29.5°F (-1.4°C).
How many days does it rain in Duncan?
In Duncan, during the entire year, the rain falls for 148.2 days and collects up to 18.23" (463mm) of precipitation.
When does it snow?
Months with snowfall are January through March, October through December.
How much does it snow?
In Duncan, during the entire year, snow falls for 18.9 days and aggregates up to 3.58" (91mm) of snow.
What is the month with the least sunshine?
With an average of 5.1h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 5.1 days and typically aggregates up to 0.98" (25mm) of snow.
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 EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow?
In Duncan, snow does not fall in April through September.
When is 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?
The month with the longest days is June, with an average of 14h and 30min of daylight.
What month has the most sunshine?
June has the most sunshine of the year in Duncan, with an average of 10.8h of sunshine.
What are the warmest months?
July, with average temperatures reaching a high of 87.6°F (30.9°C) and a low of 65.5°F (18.6°C), is the warmest month.
What is the wettest month?
July is the month with the most rainfall. Rain falls for 16.3 days and accumulates 2.2" (56mm) of precipitation.
What is the least humid month?
With an average relative humidity of 72%, August is the least humid month in Duncan.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 0.94" (24mm) of precipitation.
What is the most humid month?
The most humid month is December, with an average relative humidity of 79%.
What is the month with the shortest days?
December has the shortest days of the year in Duncan, with an average of 9h and 48min of daylight.
Average temperature
Duncan, TN
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (44.8°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure
Duncan, 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:
30.02"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.14"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
Duncan, TN
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5.9mph - Average wind speed in May:
4.8mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
3.9mph - Average wind speed in August:
3.6mph - Average wind speed in September:
3.8mph - Average wind speed in October:
4.5mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity
Duncan, TN
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).
Average rainfall
Duncan, TN
- Average rainfall in January:
1.3" - Average rainfall in February:
2.01" - Average rainfall in March:
1.46" - Average rainfall in April:
1.65" - Average rainfall in May:
1.38" - Average rainfall in June:
1.85"
The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days
Duncan, TN
- Average rainfall days in January:
11.1 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
13.6 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
11.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall
Duncan, TN
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Duncan, TN
- Average snowfall days in January:
5.4 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.2 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:
1.4 days - Average snowfall days in December:
3.6 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
Duncan, TN
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
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 1min - Average sunshine in February:
5h and 5min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 3min - Average sunshine in May:
10h and 1min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Duncan, TN
- Average sunshine days in January:
16 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
12.5 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
17 days
The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are February and July (12.5 days).
Average UV index
Duncan, 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
Duncan, TN
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
Duncan, TN
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
Duncan, Tennessee, USA
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