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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Harriman, Tennessee, is another chilly winter month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 29.1°F (-1.6°C). Temperature readings reach their annual highs in January, averaging 44.1°F (6.7°C) and a minimum average of 29.1°F (-1.6°C). Weather in January »
Weather in February
February, the last month of the winter in Harriman, is also a frosty month, with an average temperature varying between 49.1°F (9.5°C) and 33.3°F (0.7°C). January's transformation into February witnesses an average high-temperature of a still chilly 49.1°F (9.5°C), noting a minor change from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a refreshing month in Harriman, Tennessee, with temperature in the range of an average low of 39.6°F (4.2°C) and an average high of 57.2°F (14°C). The start of March brings a subtle rise in the average high-temperature, moving from a chilly 49.1°F (9.5°C) in February to a refreshing 57.2°F (14°C). Weather in March »
Weather in April
April in Harriman, Tennessee, is an agreeable spring month, with an average temperature varying between 68°F (20°C) and 47.5°F (8.6°C). April's arrival is marked by an increase in the average high-temperature, moving from a refreshing 57.2°F (14°C) in March to an agreeable 68°F (20°C). Weather in April »
Weather in May
The last month of the spring, May, is a warm month in Harriman, Tennessee, with temperature in the range of an average high of 77°F (25°C) and an average low of 55°F (12.8°C). May's arrival is marked by an increase in the average high-temperature, moving from an agreeable 68°F (20°C) in April to a moderately hot 77°F (25°C). Weather in May »
Weather in June
June, the first month of the summer in Harriman, is also a moderately hot month, with an average temperature ranging between min 61.9°F (16.6°C) and max 84°F (28.9°C). The start of June brings a subtle shift in the average high-temperature, edging up from May's 77°F (25°C) to a still moderately hot 84°F (28.9°C). Weather in June »
Weather in July
July is a hot summer month in Harriman, Tennessee, with an average temperature fluctuating between 86.5°F (30.3°C) and 64.9°F (18.3°C). During the warmest month, July, temperatures average a high of 86.5°F (30.3°C) and a low of 64.9°F (18.3°C). For July, the heat index is estimated at a torrid 100.4°F (38°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Harriman, Tennessee, with temperature in the range of an average high of 85.8°F (29.9°C) and an average low of 63.9°F (17.7°C). Harriman notes an average high-temperature of a moderately hot 85.8°F (29.9°C) in August, hardly diverging from July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Harriman, Tennessee, with an average temperature fluctuating between 80.2°F (26.8°C) and 59°F (15°C). In September, the average high-temperature marginally decreases from a moderately hot 85.8°F (29.9°C) in August to a still warm 80.2°F (26.8°C). Weather in September »
Weather in October
October, like September, is another pleasant autumn month in Harriman, Tennessee, with temperature in the range of an average high of 68.7°F (20.4°C) and an average low of 48.4°F (9.1°C). October's onset corresponds with a shift in the average high-temperature, moving from a warm 80.2°F (26.8°C) in September to a pleasant 68.7°F (20.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Harriman, is another refreshing month, with an average temperature varying between 38.8°F (3.8°C) and 56.3°F (13.5°C). The commencement of November involves a temperature shift, with the average high-temperature dropping from an agreeable 68.7°F (20.4°C) in October to a mild 56.3°F (13.5°C). Weather in November »
Weather in December
December, the first month of the winter in Harriman, is also a frosty month, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 48.6°F (9.2°C). With December's onset, the weather reveals a slight temperature decrease, transitioning from a refreshing 56.3°F (13.5°C) in November to a frosty 48.6°F (9.2°C). Weather in December »
Updated: Jul 4, 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 part of the year is the coldest?
Harriman experiences its average lowest temperatures in January, reaching a peak of 44.1°F (6.7°C) and a minimum of 29.1°F (-1.6°C).
How many days does it rain?
In Harriman, during the entire year, the rain falls for 169.5 days and collects up to 34.09" (866mm) of precipitation.
When does it snow?
January through April, November and December are months with snowfall.
How many days does it snow?
In Harriman, during the entire year, snow falls for 15.2 days and aggregates up to 2.76" (70mm) of snow.
What are the months with the least sunshine?
January and December, with an average of 4.8h of sunshine, are months with the least sunshine.
When is the lowest UV index?
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 4.1 days and typically aggregates up to 1.06" (27mm) 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?
May through October are months without snowfall.
What are the months with the highest UV index in Harriman?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
What is the least humid month?
The months with the lowest humidity are June, August, October and November, with an average relative humidity of 76%.
When are the longest days?
With an average of 14h and 36min of daylight, June has the longest days of the year in Harriman.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 10.3h of sunshine.
What are the warmest months?
July is the warmest month of the year, registering average temperatures as high as 86.5°F (30.3°C) and as low as 64.9°F (18.3°C).
What is the wettest month?
The month with the most rainfall is July, when the rain falls for 18.8 days and typically aggregates up to 4.09" (104mm) of precipitation.
What is the driest month?
The month with the least rainfall is September, when the rain falls for 12.6 days and typically collects 1.97" (50mm) of precipitation.
What is the most humid month?
The most humid month in Harriman is December, with an average relative humidity of 80%.
What is the month with the shortest days in Harriman?
With an average of 9h and 48min of daylight, December has the shortest days of the year.
Average temperature
Harriman, TN
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (44.1°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
Harriman, 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
Harriman, TN
- Average wind speed in January:
5.8mph - Average wind speed in February:
6.1mph - Average wind speed in March:
6mph - Average wind speed in April:
6.3mph - Average wind speed in May:
5mph - Average wind speed in June:
4.3mph
- Average wind speed in July:
3.8mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.8mph - Average wind speed in November:
5mph - Average wind speed in December:
5.5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity
Harriman, TN
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are June, August, October and November (76%).
Average rainfall
Harriman, TN
- Average rainfall in January:
2.6" - Average rainfall in February:
3.82" - Average rainfall in March:
2.87" - Average rainfall in April:
3.39" - Average rainfall in May:
2.36" - Average rainfall in June:
2.99"
- Average rainfall in July:
4.09" - Average rainfall in August:
2.76" - Average rainfall in September:
1.97" - Average rainfall in October:
2.32" - Average rainfall in November:
2.05" - Average rainfall in December:
2.87"
The wettest month (with the highest rainfall) is July (4.09").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days
Harriman, TN
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
12.6 days - Average rainfall days in March:
15.8 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.7 days
- Average rainfall days in July:
18.8 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
13.4 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall
Harriman, TN
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Harriman, TN
- Average snowfall days in January:
4.8 days - Average snowfall days in February:
4.1 days - Average snowfall days in March:
2.3 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:
0.1 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
2.8 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Harriman, TN
- Average daylight in January:
10h and 0min - 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 4min
- 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 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
4h and 5min - Average sunshine in February:
5h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 3min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 3min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 48min).
Average sunshine days
Harriman, TN
- Average sunshine days in January:
14.2 days - Average sunshine days in February:
12.9 days - Average sunshine days in March:
12 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
12 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
12.5 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (10.7 days).
Average UV index
Harriman, 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
Harriman, TN
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility
Harriman, TN
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).