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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
Weather in January
January, the same as December, in Portland, Tennessee, is a frosty winter month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 42.8°F (6°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 42.8°F (6°C) and a low of 28.8°F (-1.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also a frosty month in Portland, Tennessee, with an average temperature ranging between max 48.2°F (9°C) and min 33.1°F (0.6°C). February witnesses a minor rise in the average high-temperature, transitioning from 42.8°F (6°C) in January to a still frosty 48.2°F (9°C). Weather in February »
Weather in March
The first month of the spring, March, is a refreshing month in Portland, Tennessee, with an average temperature ranging between min 40.3°F (4.6°C) and max 57.4°F (14.1°C). Portland's transition into March is marked by a rise in the average high-temperature, advancing from a frosty 48.2°F (9°C) in February to a refreshing 57.4°F (14.1°C). Weather in March »
Weather in April
April in Portland, Tennessee, is an agreeable spring month, with an average temperature fluctuating between 68.2°F (20.1°C) and 49.3°F (9.6°C). April sees a rise in the average high-temperature, climbing from a mild 57.4°F (14.1°C) in March to a pleasant 68.2°F (20.1°C). Weather in April »
Weather in May
May, the last month of the spring in Portland, is a warm month, with an average temperature fluctuating between 76.6°F (24.8°C) and 58.1°F (14.5°C). The start of May is characterized by a subtle increase in the average high-temperature, transitioning from an agreeable 68.2°F (20.1°C) in April to a moderately hot 76.6°F (24.8°C). Weather in May »
Weather in June
June, the first month of the summer in Portland, is still a warm month, with an average temperature ranging between max 84.7°F (29.3°C) and min 65.3°F (18.5°C). As Portland welcomes June, the average high-temperature displays a subtle shift, adjusting from a moderately hot 76.6°F (24.8°C) in May to a still warm 84.7°F (29.3°C). Weather in June »
Weather in July
July is a hot summer month in Portland, Tennessee, with temperature in the range of an average high of 86.9°F (30.5°C) and an average low of 68.4°F (20.2°C). In Portland, July is identified by the highest average temperatures, reaching a peak of 86.9°F (30.5°C) and a low of 68.4°F (20.2°C). The heat index for July is calculated to be a sweltering 102.2°F (39°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Portland, Tennessee, with an average temperature varying between 85.6°F (29.8°C) and 66.9°F (19.4°C). The shift into August finds Portland at an average high-temperature of a moderately hot 85.6°F (29.8°C), closely comparable to July's conditions. Weather in August »
Weather in September
September, the first month of the autumn in Portland, is still a warm month, with an average temperature ranging between max 80.1°F (26.7°C) and min 61.5°F (16.4°C). September's arrival aligns with a minor decrease in average high-temperatures, from August's 85.6°F (29.8°C) to a still warm 80.1°F (26.7°C). Weather in September »
Weather in October
October, the same as September, in Portland, Tennessee, is another pleasant autumn month, with an average temperature ranging between min 49.6°F (9.8°C) and max 68.5°F (20.3°C). Start of October brings a shift in the average high-temperature, falling from September's moderately hot 80.1°F (26.7°C) to an agreeable 68.5°F (20.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another mild month in Portland, Tennessee, with an average temperature varying between 56.1°F (13.4°C) and 38.8°F (3.8°C). November's onset brings a slight change in high-temperatures, falling from a pleasant 68.5°F (20.3°C) in October to a moderate 56.1°F (13.4°C). Weather in November »
Weather in December
December, the first month of the winter in Portland, is still a chilly month, with temperature in the range of an average low of 34.7°F (1.5°C) and an average high of 47.3°F (8.5°C). The beginning of December brings a minor change in the average high-temperature, shifting from a moderate 56.1°F (13.4°C) in November to a frosty 47.3°F (8.5°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
What part of the year is the coldest in Portland?
Portland's coldest month, January, registers temperatures that range from a high of 42.8°F (6°C) to a low of 28.8°F (-1.8°C).
How much does it rain in Portland?
Throughout the year, in Portland, there are 177.4 rainfall days, and 44.61" (1133mm) of precipitation is accumulated.
When does it snow in Portland?
Months with snowfall are January through April, November and December.
How much does it snow in Portland?
Throughout the year, in Portland, there are 17.7 snowfall days, and 6.22" (158mm) of snow is accumulated.
When is the lowest UV index in Portland?
The months with the lowest UV index in Portland, Tennessee, are January, February and December, with an average maximum UV index of 2.
What is the snowiest month in Portland?
The month with the most snowfall in Portland, Tennessee, is February, when snow falls for 5.2 days and typically aggregates up to 1.69" (43mm) of snow.
What is the month with the least sunshine in Portland?
The month with the least sunshine is February, with an average of 4.2h of sunshine.
What is the most humid month in Portland?
The months with the highest humidity are March, May and December, with an average relative humidity of 79%.
When is Daylight Saving Time (DST) in Portland?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Portland, 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.
When it does not snow in Portland?
In Portland, Tennessee, snow does not fall in May through October.
What are the months with the highest UV index in Portland?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Portland, Tennessee.
When are the longest days in Portland?
With an average of 14h and 36min of daylight, June has the longest days of the year in Portland, Tennessee.
What month has the most sunshine in Portland?
With an average of 10.1h of sunshine, June has the most sunshine of the year in Portland, Tennessee.
What is the hottest time of year in Portland?
July is the month when Portland sees the average highest temperatures, with a high of 86.9°F (30.5°C) and a low of 68.4°F (20.2°C).
What is the wettest month in Portland?
The month with the most rainfall in Portland is July, when the rain falls for 19.7 days and typically aggregates up to 5.39" (137mm) of precipitation.
What are the least humid months in Portland?
The months with the lowest humidity in Portland are October and November, with an average relative humidity of 75%.
What is the driest month in Portland?
The month with the least rainfall is November, when the rain falls for 9.7 days and typically collects 2.56" (65mm) of precipitation.
What is the month with the shortest days in Portland?
December has the shortest days of the year, with an average of 9h and 42min of daylight.
Average temperature
Portland, TN
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (42.8°F).
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Portland, 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:
30"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.99"Hg - Average pressure in August:
29.99"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 month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed
Portland, TN
- Average wind speed in January:
8.2mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.2mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.7mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity
Portland, TN
The months with the highest relative humidity are March, May and December (79%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall
Portland, TN
- Average rainfall in January:
2.99" - Average rainfall in February:
4.02" - Average rainfall in March:
3.31" - Average rainfall in April:
3.9" - Average rainfall in May:
4.06" - Average rainfall in June:
4.41"
The wettest month (with the highest rainfall) is July (5.39").
The driest month (with the least rainfall) is November (2.56").
Average rainfall days
Portland, TN
- Average rainfall days in January:
11.4 days - Average rainfall days in February:
12.3 days - Average rainfall days in March:
15.8 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
17.6 days
- Average rainfall days in July:
19.7 days - Average rainfall days in August:
18.8 days - Average rainfall days in September:
14.7 days - Average rainfall days in October:
12.1 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
13.4 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.7 days).
Average snowfall
Portland, TN
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Portland, TN
- Average snowfall days in January:
5.3 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
2.4 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:
3.6 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Portland, 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 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
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 42min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
4h and 1min - Average sunshine in March:
5h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days
Portland, TN
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
11.3 days - Average sunshine days in March:
11.9 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
9.7 days - Average sunshine days in August:
10.8 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
13.9 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is July (9.7 days).
Average UV index
Portland, 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
Portland, TN
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility
Portland, TN
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
Portland, Tennessee, USA
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