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Contents
- The climate of Alcoa
- The best time to visit Alcoa
- The worst time to visit Alcoa
- Spring weather in Alcoa
- Summer weather in Alcoa
- Autumn weather in Alcoa
- Winter weather in Alcoa
- 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
The climate of Alcoa
Alcoa, located in Tennessee, USA, demonstrates a Humid subtropical climate, also known as a Cfa in the Köppen climate classification system. The subtropical characteristic translates to hot, humid summers and cool winters. This climatic pattern is associated with diversified weather characteristics, each of which experiences notable variations across the year.
Regarding temperature, the weather patterns indicate that the highest temperatures range from 44.8°F (7.1°C) in January to 87.6°F (30.9°C), experienced in July. Similarly, the lowest temperatures range from 65.5°F (18.6°C) in July to 29.5°F (-1.4°C) in January. Over the annual cycle, the humidity figures exhibit minor variations, with levels between 72% in August to 79% in December, thus revealing a generally humid climate.
Precipitation patterns in Alcoa depict substantial rainfall amounts throughout the year, peaking in July at 2.2" (56mm) alongside 16.3 rainy days. However, January, though with the least amount of rainfall at 1.3" (33mm), still experiences multiple precipitative days with an average of 11.1. Interestingly, while Alcoa does experience temperatures that could possibly support snowfall, only slight snowfall is registered, mostly in February and December.
Regarding temperature, the weather patterns indicate that the highest temperatures range from 44.8°F (7.1°C) in January to 87.6°F (30.9°C), experienced in July. Similarly, the lowest temperatures range from 65.5°F (18.6°C) in July to 29.5°F (-1.4°C) in January. Over the annual cycle, the humidity figures exhibit minor variations, with levels between 72% in August to 79% in December, thus revealing a generally humid climate.
Precipitation patterns in Alcoa depict substantial rainfall amounts throughout the year, peaking in July at 2.2" (56mm) alongside 16.3 rainy days. However, January, though with the least amount of rainfall at 1.3" (33mm), still experiences multiple precipitative days with an average of 11.1. Interestingly, while Alcoa does experience temperatures that could possibly support snowfall, only slight snowfall is registered, mostly in February and December.
The best time to visit Alcoa
The nature of the trip should guide the timing for the visit. However, if the goal is to avoid high humidity and to experience more pleasant temperatures, the months from April to June offer such conditions. Average temperatures range from 57.7°F (14.3°C) to 84.6°F (29.2°C) with a relatively low humidity level of 75% and a satisfactory visibility range of 6 miles.
The worst time to visit Alcoa
Those who are not fans of high temperatures and humidity might want to avoid July and August, when temperatures reach highs of 87.6°F (30.9°C) and 86.7°F (30.4°C) respectively. Additionally, July presents the year's highest rainfall of 2.2" (56mm) over 16.3 days, adding to the pervasive mugginess brought on by a 73% humidity level. Visibility, however, maintains at 6 miles.
Spring weather in Alcoa
Spring in Alcoa, defining March through May, portrays rising temperatures from 40.3°F (4.6°C) to 61.9°F (16.6°C). Rainfall patterns show a constant rise from 1.46" (37mm) in March to 1.85" (47mm) in May. Sunshine hours moderately increase throughout the spring, from 6.7 in March to 10.8 in May. This period also registers the most significant increase in daylight hours from 12 to 14.6 hours.
Summer weather in Alcoa
Summer, constituting June through August, is characterized by the warmest temperatures, with an increase from 55.4°F (13°C) to 65.5°F (18.6°C). Rainfall reaches its peak in July with 2.2" (56mm) distributed over 16.3 days then drops to 1.42" (36mm) in August. Perhaps surprisingly, despite the heat and rain, summer registers the longest daylight hours, peaking at 14.6 in June.
Autumn weather in Alcoa
Autumn conditions in Alcoa, from September through November, get progressively colder with temperatures decreasing from 59.9°F (15.5°C) to 39.2°F (4°C). Simultaneously, rainfall also decreases, from 0.94" (24mm) in September to 1.3" (33mm) in November, with corresponding days of rainfall decreasing from 10.6 to 8.7 over the same period.
Winter weather in Alcoa
Winter in Alcoa transpires over December through February, with an initial temperature drop to 35.2°F (1.8°C) in December, followed by a small rise to 33.4°F (0.8°C) by February. The winter season registers the year's lowest daylight hours, recorded at 9.8 hours in December, with a slightly increased 10.9 hours by February. Simultaneously, rainfall remains constant, with 1.54" (39mm) of rain over 11.1 days witnessed in December, increasing marginally by February to clock 2.01" (51mm) of rain over 11.3 days.
Weather in January
Alcoa, Tennessee kicks off the year with the height of winter conditions. The weather leans on the colder side, with snow-covered landscapes setting a captivating scene. It sees the highest number of snowfall days, ascending to 5.4 days, alongside an average snowfall of 0.87" (22mm). Weather in January »
Weather in February
February in Alcoa strides in with slightly warmer but still cold conditions compared to January. The gradual increase in temperature does not impede the snowfall, attributing to the city's winter charm. The month also witnesses the year's highest relative humidity, peaking at 78%. Weather in February »
Weather in March
March in Alcoa brings with it a significant shift in weather patterns, as the city transitions from winter to spring. It experiences a notable rise in temperatures, and snowfall gives way to rainfall, signifying the arrival of springtime. Weather in March »
Weather in April
April in Alcoa firmly ushers in the spring, with mild weather and blossoming landscapes. The weather displays a stark difference from the colder months, as temperatures continue to rise, and snowfall retreats completely. Remarkably, the lowest wind speed throughout the year is recorded this month, averaging at 5.9mph (9.5km/h). Weather in April »
Weather in May
In May, Alcoa embraces warmer temperatures, marking the onset of the summer season. This month imparts one of the most significant transformations in the city's weather, giving way to longer days and increasing sunlight hours. Connected with the increasing warmth, daylight hours peak at 14.1 hours this month. Weather in May »
Weather in June
June brings to Alcoa the full fervor of summer, with hotter days becoming the norm. Despite being one of the warmest months, it ensures amiable weather for a summer vacation. The city records the highest temperature around 84.6°F (29.2°C) this month. Weather in June »
Weather in July
Alcoa in July, at its summer pinnacle, registers the highest temperatures of the year. It offers long, warm days, perfect for sunbathing and lake activities. The mercury level reaches its zenith, averaging a high of 87.6°F (30.9°C). Weather in July »
Weather in August
August in Alcoa signals the gradual wind down of summer but maintains high temperatures. While the days remain hot, the promise of the impending autumn is subtly felt. Of note, the city sees the least wind speed, averaging around 3.6mph (5.8km/h). Weather in August »
Weather in September
In September, Alcoa starts embracing the mellow weather of fall, as temperatures begin their gradual descent from summer highs. The city transitions smoothly, combining the last vestiges of summer with the first hints of autumn. Weather in September »
Weather in October
October foretells of chillier days in Alcoa as the heat continues its downward trend, and fall takes center stage. The city gets draped in red and oranges, and the fall foliage is at its peak. Even though temperatures drop, rainfall remains relatively low with a few showers. Weather in October »
Weather in November
November brings in colder weather, with Alcoa starting to brace itself for the forthcoming winter. The city undergoes a transformation as the fall colors start to fade, making way for the bold hues of winter. The city records wind speeds rising back to an average of 4.8mph (7.7km/h). Weather in November »
Weather in December
With the arrival of December, Alcoa silently slips into the winter frolic, with temperatures continuing their descent. The weather turns significantly colder, promising the arrival of snow and the joy of winter celebrations. Despite the weather's chill, the city sees relative humidity bubbling back to 79%, its highest since February. 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 Alcoa?
Alcoa's coldest month, January, generally records average temperatures ranging from a high of 44.8°F (7.1°C) to a low of 29.5°F (-1.4°C).
How many days does it rain in Alcoa?
Throughout the year, in Alcoa, there are 148.2 rainfall days, and 18.23" (463mm) of precipitation is accumulated.
When does it snow in Alcoa?
January through March, October through December are months with snowfall in Alcoa.
How many days does it snow in Alcoa?
In Alcoa, Tennessee, during the entire year, snow falls for 18.9 days and aggregates up to 3.58" (91mm) of snow.
What is the month with the least sunshine in Alcoa?
The month with the least sunshine is January, with an average of 5.1h of sunshine.
What is the month with the lowest UV index in Alcoa?
The months with the lowest UV index in Alcoa, Tennessee, are January, February and December, with an average maximum UV index of 2.
When does it snow the most in Alcoa?
The month with the most snowfall is February, when snow falls for 5.1 days and typically aggregates up to 0.98" (25mm) of snow.
When is Daylight Saving Time (DST) in Alcoa?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Alcoa, Tennessee, 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 in Alcoa?
April through September are months without snowfall in Alcoa.
What are the months with the highest UV index in Alcoa?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days in Alcoa?
June has the longest days of the year, with an average of 14h and 30min of daylight.
What month has the most sunshine in Alcoa?
With an average of 10.8h of sunshine, June has the most sunshine of the year.
What are the warmest months in Alcoa?
July, with its high-temperature average of 87.6°F (30.9°C) and a low-temperature average of 65.5°F (18.6°C), is the warmest month in Alcoa, Tennessee.
What is the rainiest month in Alcoa?
July is the month with the most rainfall in Alcoa, Tennessee. Rain falls for 16.3 days and accumulates 2.2" (56mm) of precipitation.
What is the least humid month in Alcoa?
With an average relative humidity of 72%, August is the least humid month.
What is the driest month in Alcoa?
September is the month with the least rainfall in Alcoa, Tennessee. Rain falls for 10.6 days and accumulates 0.94" (24mm) of precipitation.
What is the most humid month in Alcoa?
The most humid month in Alcoa, Tennessee, is December, with an average relative humidity of 79%.
What is the month with the shortest days in Alcoa?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Average temperature
Alcoa, TN
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (44.8°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure
Alcoa, 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
Alcoa, TN
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.7mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5.9mph - Average wind speed in May:
4.8mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
3.9mph - 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:
4.8mph - Average wind speed in December:
5.2mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity
Alcoa, TN
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is August (72%).
Average rainfall
Alcoa, TN
- Average rainfall in January:
1.3" - Average rainfall in February:
2.01" - Average rainfall in March:
1.46" - Average rainfall in April:
1.65" - Average rainfall in May:
1.38" - Average rainfall in June:
1.85"
The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days
Alcoa, TN
- Average rainfall days in January:
11.1 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
13.6 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
16.3 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8.7 days - Average rainfall days in December:
11.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall
Alcoa, TN
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Alcoa, TN
- Average snowfall days in January:
5.4 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
2.9 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:
0.3 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Alcoa, TN
- Average daylight in January:
10h and 1min - 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 3min
- 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 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 5min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 3min - Average sunshine in May:
10h and 1min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Alcoa, TN
- Average sunshine days in January:
16 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
14.1 days
- Average sunshine days in July:
12.5 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
17 days
The month with the most sunshine days is November (19.3 days).
The months with the least sunshine days are February and July (12.5 days).
Average UV index
Alcoa, 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
Alcoa, TN
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility
Alcoa, 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).
Alcoa, Tennessee, USA
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