Climate and monthly weather forecastCardiff, TN
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Cardiff, Tennessee, with temperature in the range of an average low of 29.1°F (-1.6°C) and an average high of 43.7°F (6.5°C). The coldest month is January, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 29.1°F (-1.6°C). Weather in January »Weather in February
February, the last month of the winter in Cardiff, is also a frosty month, with an average temperature fluctuating between 48.6°F (9.2°C) and 33.4°F (0.8°C). Cardiff, Tennessee, measures an average high-temperature of a still frosty 48.6°F (9.2°C) in February, nearly consistent with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a mild month in Cardiff, Tennessee, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 39.7°F (4.3°C). The onset of March brings a minor temperature shift, with the average high-temperature moving from a frosty 48.6°F (9.2°C) in February to a refreshing 57°F (13.9°C). Weather in March »Weather in April
April in Cardiff, Tennessee, is an agreeable spring month, with an average temperature ranging between min 47.8°F (8.8°C) and max 68°F (20°C). As April arrives, Cardiff's weather shows an increase in high-temperatures, moving from March's mild 57°F (13.9°C) to a pleasant 68°F (20°C). Weather in April »Weather in May
May, the last month of the spring in Cardiff, is a moderately hot month, with an average temperature fluctuating between 76.6°F (24.8°C) and 55.2°F (12.9°C). Cardiff's transition into May brings a slight rise in the average high-temperature, moving from a pleasant 68°F (20°C) in April to a moderately hot 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 Cardiff, Tennessee, with an average temperature fluctuating between 61.7°F (16.5°C) and 83.7°F (28.7°C). June's onset brings a subtle temperature rise, moving from a warm 76.6°F (24.8°C) in May to a still moderately hot 83.7°F (28.7°C). Weather in June »Weather in July
July is a tropical summer month in Cardiff, Tennessee, with an average temperature ranging between max 86.4°F (30.2°C) and min 64.9°F (18.3°C). In Cardiff, July is identified by the highest average temperatures, reaching a peak of 86.4°F (30.2°C) and a low of 64.9°F (18.3°C). July's heat index is estimated at a fiery hot 98.6°F (37°C). Weather in July »Weather in August
August, the last month of the summer in Cardiff, is another warm month, with an average temperature ranging between min 63.9°F (17.7°C) and max 85.5°F (29.7°C). Cardiff starts August with an average high-temperature of a warm 85.5°F (29.7°C), hinting at a minimal fluctuation from July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Cardiff, Tennessee, with an average temperature varying between 79.7°F (26.5°C) and 59.2°F (15.1°C). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 85.5°F (29.7°C) to a still moderately hot 79.7°F (26.5°C). Weather in September »Weather in October
October, the same as September, in Cardiff, Tennessee, is an agreeable autumn month, with an average temperature varying between 48.4°F (9.1°C) and 68.2°F (20.1°C). Welcoming October, Cardiff observes a shift in the average high-temperature, falling from September's warm 79.7°F (26.5°C) to a pleasant 68.2°F (20.1°C). Weather in October »Weather in November
November, the last month of the autumn in Cardiff, is another mild month, with temperature in the range of an average low of 38.7°F (3.7°C) and an average high of 56.1°F (13.4°C). November's onset brings a reduction in the average high-temperature, from an agreeable 68.2°F (20.1°C) in October to a mild 56.1°F (13.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Cardiff, Tennessee, with an average temperature fluctuating between 34.7°F (1.5°C) and 48.6°F (9.2°C). With the onset of December, Cardiff's climate undergoes a slight change as the average high-temperature moves from a moderate 56.1°F (13.4°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
Cardiff, TN
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (43.7°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure
Cardiff, 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:
30.01"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 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
Cardiff, TN
- Average wind speed in January:
6.1mph - Average wind speed in February:
6.4mph - Average wind speed in March:
6.3mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.1mph - Average wind speed in June:
4.4mph
- Average wind speed in July:
3.9mph - Average wind speed in August:
3.8mph - Average wind speed in September:
4mph - Average wind speed in October:
4.9mph - Average wind speed in November:
5.3mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity
Cardiff, TN
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Cardiff, TN
- Average rainfall in January:
3.03" - Average rainfall in February:
4.13" - Average rainfall in March:
3.23" - Average rainfall in April:
3.82" - Average rainfall in May:
3.03" - Average rainfall in June:
3.23"
The wettest month (with the highest rainfall) is July (4.29").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days
Cardiff, TN
- Average rainfall days in January:
12.8 days - Average rainfall days in February:
12.4 days - Average rainfall days in March:
15.6 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.4 days
- Average rainfall days in July:
19.4 days - Average rainfall days in August:
18 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
10.7 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall
Cardiff, TN
The month with the highest snowfall is February (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Cardiff, TN
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.3 days - Average snowfall days in March:
1.7 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 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
2.2 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Cardiff, 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 36min
- 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 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
5h and 54min - Average sunshine in March:
6h and 18min - 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 12min - 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 months with the least sunshine are January and December (Average sunshine: 4h and 54min).
Average sunshine days
Cardiff, TN
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
12.9 days - Average sunshine days in March:
13.1 days - Average sunshine days in April:
13.9 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.2 days
- Average sunshine days in July:
9.4 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
15.5 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index
Cardiff, 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
Cardiff, 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
Cardiff, TN
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).





