Climate and monthly weather forecast
Harriman, TN

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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 »

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

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 - Harriman, TN

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 - Harriman, TN

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

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 - Harriman, TN

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 - Harriman, TN

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

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 - Harriman, TN

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 / Average sunshine - Harriman, TN

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).

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 - Harriman, TN

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

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 visibility
Harriman, TN

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).

Harriman, Tennessee, USA

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