Climate and monthly weather forecastWestlyn, TN
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Westlyn, Tennessee, with an average temperature fluctuating between 29.7°F (-1.3°C) and 44.8°F (7.1°C). With average high temperatures of 44.8°F (7.1°C) and lows of 29.7°F (-1.3°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a cool month in Westlyn, Tennessee, with an average temperature varying between 33.6°F (0.9°C) and 50°F (10°C). February notes an average high-temperature of a cool 50°F (10°C), subtly differing from January's 44.8°F (7.1°C). Weather in February »Weather in March
The first month of the spring, March, is a moderate month in Westlyn, Tennessee, with an average temperature fluctuating between 40.5°F (4.7°C) and 58.1°F (14.5°C). The shift from February to March introduces a subtle increase in the average high-temperature, moving from a cool 50°F (10°C) to a moderate 58.1°F (14.5°C). Weather in March »Weather in April
April in Westlyn, Tennessee, is a pleasant spring month, with an average temperature varying between 48.2°F (9°C) and 69.1°F (20.6°C). Noticing a change, the average high-temperature during April moves from March's moderate 58.1°F (14.5°C) to an agreeable 69.1°F (20.6°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Westlyn, Tennessee, with an average temperature varying between 55.8°F (13.2°C) and 77.9°F (25.5°C). May comes with a subtle rise, with the average high-temperature adjusting from a pleasant 69.1°F (20.6°C) in April to a warm 77.9°F (25.5°C). Weather in May »Weather in June
June, the first month of the summer in Westlyn, is still a warm month, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 62.4°F (16.9°C). The start of June brings a subtle shift in the average high-temperature, edging up from May's moderately hot 77.9°F (25.5°C) to a still warm 85.1°F (29.5°C). Weather in June »Weather in July
July is a tropical summer month in Westlyn, Tennessee, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 87.8°F (31°C). Westlyn's warmest month, July, registers temperatures that range from a high of 87.8°F (31°C) to a low of 66°F (18.9°C). The average heat index in July is estimated at a torrid 102.2°F (39°C). Weather in July »Weather in August
The last month of the summer, August, is another tropical month in Westlyn, Tennessee, with temperature in the range of an average low of 65.1°F (18.4°C) and an average high of 87.1°F (30.6°C). The beginning of August records an average high-temperature of a still hot 87.1°F (30.6°C), marking a negligible difference from July's 87.8°F (31°C). Weather in August »Weather in September
September, the first month of the autumn in Westlyn, is still a warm month, with an average temperature varying between 60.1°F (15.6°C) and 81.3°F (27.4°C). A minor decrease in the average high-temperature is observed during September, shifting from a hot 87.1°F (30.6°C) in August to a warm 81.3°F (27.4°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in Westlyn, Tennessee, with an average temperature fluctuating between 48.9°F (9.4°C) and 69.1°F (20.6°C). A change in temperatures is noted as September gives way to October, with average highs reducing from a moderately hot 81.3°F (27.4°C) to a pleasant 69.1°F (20.6°C). Weather in October »Weather in November
November, the last month of the autumn in Westlyn, is another refreshing month, with an average temperature ranging between min 39.2°F (4°C) and max 57°F (13.9°C). In Westlyn, the beginning of November is marked by a lowered average high-temperature, shifting from October's pleasant 69.1°F (20.6°C) to a refreshing 57°F (13.9°C). Weather in November »Weather in December
The first month of the winter, December, is still a chilly month in Westlyn, Tennessee, with an average temperature varying between 35.4°F (1.9°C) and 49.1°F (9.5°C). A minor decrease in the average high-temperature is observed during December, shifting from a mild 57°F (13.9°C) in November to a frosty 49.1°F (9.5°C). Weather in December »Updated: Aug 22, 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
In Westlyn, January is known for its average lowest temperatures, reaching a high of 44.8°F (7.1°C) and a low of 29.7°F (-1.3°C).
Throughout the year, in Westlyn, there are 177.6 rainfall days, and 37.91" (963mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
Throughout the year, there are 19 snowfall days, and 5.59" (142mm) of snow is accumulated.
January has the least sunshine of the year in Westlyn, with an average of 5.1h of sunshine.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Westlyn.
February is the month with the most rainfall. Rain falls for 13.8 days and accumulates 4.33" (110mm) of precipitation.
February is the month with the most snowfall. Snow falls for 5.4 days and accumulates 1.93" (49mm) of snow.
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.
May through September are months without snowfall.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
June has the longest days of the year, with an average of 14h and 36min of daylight.
The month with the most sunshine is June, with an average of 10.7h of sunshine.
July is the month that records the highest temperatures, with averages ranging from a high of 87.8°F (31°C) to a low of 66°F (18.9°C).
August is the least humid month, with an average relative humidity of 72%.
The month with the least rainfall is September, when the rain falls for 12.6 days and typically collects 1.97" (50mm) of precipitation.
The most humid month is December, with an average relative humidity of 79%.
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Average temperature
Westlyn, TN
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (44.8°F).
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure
Westlyn, 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
Westlyn, TN
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6mph - Average wind speed in May:
4.8mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
3.8mph - 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:
4.7mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity
Westlyn, TN
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).
Average rainfall
Westlyn, TN
- Average rainfall in January:
3.31" - Average rainfall in February:
4.33" - Average rainfall in March:
3.31" - Average rainfall in April:
3.78" - Average rainfall in May:
2.72" - Average rainfall in June:
3.03"
The wettest month (with the highest rainfall) is February (4.33").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days
Westlyn, TN
- Average rainfall days in January:
14.7 days - Average rainfall days in February:
13.8 days - Average rainfall days in March:
16.6 days - Average rainfall days in April:
15.4 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
18.6 days - Average rainfall days in August:
16.9 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
14.2 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (10.3 days).
Average snowfall
Westlyn, TN
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Westlyn, TN
- Average snowfall days in January:
5.5 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
2.6 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:
0.3 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
3.5 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Westlyn, TN
- Average daylight in January:
10h and 0min - 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:
5h and 6min - Average sunshine in February:
5h and 54min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 30min - Average sunshine in May:
10h and 6min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 42min - Average sunshine in October:
7h and 12min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Westlyn, TN
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
10.6 days - Average sunshine days in March:
10.5 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
11.7 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index
Westlyn, 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
Westlyn, TN
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility
Westlyn, 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).
