Climate and monthly weather forecastMercer, TN
Climate and monthly weather forecast
Weather in January
January, the same as December, in Mercer, Tennessee, is another chilly winter month, with an average temperature ranging between max 45.7°F (7.6°C) and min 32°F (0°C). In Mercer, the month of January registers the lowest temperatures, averaging 45.7°F (7.6°C) at the peak and 32°F (0°C) at the lowest. Weather in January »Weather in February
February, the last month of the winter in Mercer, is a fresh month, with an average temperature fluctuating between 50.4°F (10.2°C) and 36.1°F (2.3°C). Mercer measures an average high-temperature of a fresh 50.4°F (10.2°C) in February, nearly consistent with the preceding month. Weather in February »Weather in March
March, the first month of the spring in Mercer, is a mild month, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 59.5°F (15.3°C). As February transitions into March, a change in temperatures is observed, with average highs moving from a fresh 50.4°F (10.2°C) to a moderate 59.5°F (15.3°C). Weather in March »Weather in April
April is an agreeable spring month in Mercer, Tennessee, with an average temperature ranging between max 69.4°F (20.8°C) and min 51.6°F (10.9°C). An increase in the average high-temperature marks April, moving from March's refreshing 59.5°F (15.3°C) to a pleasant 69.4°F (20.8°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Mercer, Tennessee, with an average temperature ranging between min 60.4°F (15.8°C) and max 77.5°F (25.3°C). Entering May, Mercer notices a subtle temperature elevation, with the average high-temperature advancing from April's pleasant 69.4°F (20.8°C) to a moderately hot 77.5°F (25.3°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Mercer, Tennessee, with an average temperature varying between 68°F (20°C) and 85.8°F (29.9°C). With the onset of June, Mercer's average high-temperature sees a modest rise, moving from May's 77.5°F (25.3°C) to a still moderately hot 85.8°F (29.9°C). Weather in June »Weather in July
July is a tropical summer month in Mercer, Tennessee, with an average temperature varying between 87.6°F (30.9°C) and 70°F (21.1°C). Mercer's warmest temperatures are experienced in July, with average high temperatures of 87.6°F (30.9°C) and lows of 70°F (21.1°C). The heat index for July is appraised at an extremely hot 104°F (40°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Mercer, Tennessee, with an average temperature varying between 87.4°F (30.8°C) and 69.1°F (20.6°C). Stepping into August, Mercer records an average high-temperature of a still tropical 87.4°F (30.8°C), almost consistent with July. Weather in August »Weather in September
September, the first month of the autumn in Mercer, is still a warm month, with an average temperature fluctuating between 63.5°F (17.5°C) and 82.9°F (28.3°C). Mercer's September average high-temperature settles at a moderately hot 82.9°F (28.3°C), showing a near match with the preceding month. Weather in September »Weather in October
October, like September, is another pleasant autumn month in Mercer, Tennessee, with an average temperature ranging between max 71.1°F (21.7°C) and min 51.8°F (11°C). The onset of October results in a decrease in the average high-temperature, receding from a warm 82.9°F (28.3°C) in September to a pleasant 71.1°F (21.7°C). Weather in October »Weather in November
November, the last month of the autumn in Mercer, is also a moderate month, with an average temperature fluctuating between 41.9°F (5.5°C) and 57.7°F (14.3°C). As Mercer enters November, the average high-temperature decreases from the a pleasant 71.1°F (21.7°C) of October to a refreshing 57.7°F (14.3°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Mercer, Tennessee, with an average temperature ranging between max 49.5°F (9.7°C) and min 36.7°F (2.6°C). Mercer's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's moderate 57.7°F (14.3°C) to a chilly 49.5°F (9.7°C). 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
Mercer's coldest temperatures are experienced in January, with average high temperatures of 45.7°F (7.6°C) and lows of 32°F (0°C).
In Mercer, Tennessee, during the entire year, the rain falls for 125.3 days and collects up to 15.47" (393mm) of precipitation.
Months with snowfall are January through March, November and December.
In Mercer, during the entire year, snow falls for 6.2 days and aggregates up to 1.14" (29mm) of snow.
The month with the least sunshine is February, with an average of 4.7h of sunshine.
The most humid month is March, with an average relative humidity of 80%.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mercer, 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 Mercer, Tennessee, snow does not fall in April through October.
With an average of 14h and 30min of daylight, June has the longest days of the year in Mercer.
The month with the most sunshine is June, with an average of 10.7h of sunshine.
June and July, with an average maximum UV index of 7, are months with the highest UV index in Mercer.
Mercer's temperatures peak on average in July, reaching 87.6°F (30.9°C) at their highest and 70°F (21.1°C) at their lowest.
The month with the most rainfall in Mercer is July, when the rain falls for 14.3 days and typically aggregates up to 1.85" (47mm) of precipitation.
September is the month with the least rainfall in Mercer, Tennessee. Rain falls for 8.9 days and accumulates 0.67" (17mm) of precipitation.
October is the least humid month, with an average relative humidity of 71%.
The month with the most snowfall is December, when snow falls for 0.9 days and typically aggregates up to 0.31" (8mm) of snow.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
With an average maximum UV index of 2, December is the month with the lowest UV index in Mercer.
Average temperature
Mercer, 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 (45.7°F).
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure
Mercer, 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:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"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 (29.95"Hg).
Average wind speed
Mercer, TN
- Average wind speed in January:
8.9mph - Average wind speed in February:
9.1mph - Average wind speed in March:
8.7mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.9mph - Average wind speed in October:
7.1mph - Average wind speed in November:
8mph - Average wind speed in December:
8.3mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity
Mercer, TN
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Mercer, TN
- Average rainfall in January:
1.02" - Average rainfall in February:
1.65" - Average rainfall in March:
1.26" - Average rainfall in April:
1.38" - Average rainfall in May:
1.34" - Average rainfall in June:
1.46"
- Average rainfall in July:
1.85" - Average rainfall in August:
1.38" - Average rainfall in September:
0.67" - Average rainfall in October:
1.1" - Average rainfall in November:
0.79" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is July (1.85").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days
Mercer, TN
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
10.1 days - Average rainfall days in May:
12.1 days - Average rainfall days in June:
12.2 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
8.8 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (7.1 days).
Average snowfall
Mercer, TN
The month with the highest snowfall is December (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Mercer, TN
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
2.2 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Mercer, 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 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:
4h and 42min - Average sunshine in March:
6h and 24min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 24min - Average sunshine in October:
6h and 48min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Mercer, TN
- Average sunshine days in January:
19.5 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
17.9 days - Average sunshine days in May:
16.8 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (13.8 days).
Average UV index
Mercer, TN
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Mercer, TN
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility
Mercer, TN
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
