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Climate - Alabama (United States)


Average weather, temperature, rainfall, sunshine hours

Flag - United States

Alabama, map


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In much of Alabama, the climate is humid subtropical, with mild, rainy winters, during which short cold spells can occur, and hot, muggy summers, with many hours of sunshine but also with rains and thunderstorms.
In the north, along the Tennessee River (see Huntsville, Florence, Decatur, Scottsboro), where the winter is a bit colder, the climate can be defined as temperate.
Alabama is a state in the southeastern United States and has an area of 131,426 sq km (50,744 sq mi). It borders Mississippi, Tennessee, Georgia and Florida, while in the south, there is a coastal stretch of about 90 km (55 mi) that overlooks the Gulf of Mexico.
The state is largely occupied by plains, although there are hills in the center-north. The highest point is Mount Chehaha, 735 meters (2,411 feet) high.
The capital is Montgomery, while the largest city is Birmingham.
The Alabama River, which passes near the capital, joins the Tombigbee River in the south of the state, creating the Mobile River, which flows into the sea at the city of the same name. Mobile overlooks a bay, south of which are a barrier island, Dauphin Island, and a peninsula, Mobile Point. Further east, we find islands, inland bays (such as Wolf Bay and Perdido Bay) and peninsulas. On the coast, near towns like Golf Shores and Orange Beach, there are long beaches.
The state extends from 30 to 35 degrees north latitude, and often receives warm, humid currents from the Gulf of Mexico which, however, collide with colder, drier air masses from the west, and sometimes even from Canada. The clash of air masses can cause sudden changes in temperature, thunderstorms (sometimes accompanied by hail) and abundant rainfall, except in summer, when sultry heat prevails, although thunderstorms can still break out.
The average temperature in January ranges from 6 °C (43 °F) in the north to 11 °C (52 °F) on the southern coast, that of July is of 27.5 °C (81.5 °F) in the north and of 28/28.5 °C (82.5/83 °F) in the center-south. Here are the average temperatures in Huntsville, which is located in the north of the state.
Huntsville - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January1115.9335242.7
February2148.2365746.8
March61912.4436654.2
April112417.2517562.9
May162821.9608271.4
June203225.9688978.6
July223327.4719281.3
August213326.9709180.5
September173023.9638675
October112417.7527663.9
November51811.4416452.6
December2137.5365545.4
Year11.223.317.252.273.963

And here are the average temperatures in Mobile, which is located in the south, near the coast.
Mobile - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January51610.6416251.1
February71912.8446655
March102216.1507260.9
April132519.4567866.9
May182923.5648574.4
June223226.7718980.1
July233327.8739182
August233327.7739181.8
September203125.6698878.2
October152720.5588069
November92115487059
December61811.8436453.2
Year14.225.519.857.577.967.5

Precipitation in Alabama is abundant, since it hovers around 1,300/1,400 millimeters (51/55 inches) per year in the center-north, while in the south (see Mobile) it reaches 1,700 mm (56 in). There are no dry seasons, however the wettest seasons are winter and spring in the north, and summer in the south, due to afternoon thunderstorms but also to the contribution made by hurricanes and tropical storms (see below). Autumn is the least rainy season everywhere.
Here is the average rainfall in Birmingham, located in the north-central of the state.
Birmingham - Average precipitation
MonthMillimetersInchesDays
January1305.110
February1254.911
March1455.711
April1305.19
May1254.910
June1204.711
July1405.512
August1104.311
September1003.97
October853.37
November1054.18
December1254.910
Year144056.7118

Even though the winter is mild, there may be cold waves, usually of short duration, more intense in the north. On the coldest days of the year, the temperature generally drops to -12/-13 °C (8/10 °F) in the north and to -6/-7 °C (19/21 °F) in the south. More rarely, the temperature can drop below -20 °C (-4 °F) in the north and below -10 °C (14 °F) in the south.
Snow in Alabama is quite rare in the north and very rare in the south. On average, 6 cm (2.3 in) of snow fall per year in Huntsville, 4 cm (1.6 in) in Birmingham, and just half a centimeter (0.2 in) in Mobile.

Dauphin Island

Alabama is a sunny state, although not as sunny as Florida or the deserts of the southwest. On average, there are 2,600/2,700 hours of sunshine per year. Here are the average sunshine hours per day in Montgomery.
Montgomery - Sunshine hours
MonthAverageTotal
January5155
February6165
March7220
April8.5250
May8.5265
June8.5260
July8.5260
August8250
September7.5225
October7.5230
November5.5170
December5155
Year7.22610

The sea temperature ranges between 17 °C (63 °F) and 30 °C (85 °F). The sea is warm enough for swimming from May to October or November, while in winter it is a bit cold. Here are the average sea temperatures near Mobile.
Mobile - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1864
February1763
March18.565
April2169
May24.576
June2882
July29.585
August29.585
September28.583
October2577
November2271
December19.567
Year23.474.2

In spring and early summer, generally from April to June, and more rarely in autumn, tornadoes may develop, due to the collision of air masses. Alabama is located in a particularly endangered area, the so-called "Dixie Alley". The north is the most affected area, while the coast is the least affected.
Alabama is also exposed to the risk of hurricanes coming from the Gulf of Mexico. The area most at risk is the coast, which can receive storm surges, moreover, hurricanes weaken when they penetrate inland, however, they can still bring abundant rainfall. Hurricane season runs from June to November, although they are more likely from August to October, with a peak in September.
The hurricane that caused the most severe damage in Alabama was Frederic in September 1979. After 2000, hurricanes that had a significant impact on the coast were Ivan in September 2004, Katrina in August 2005 (although it hit most directly Louisiana), Sally in September 2020, and Zeta at the end of October 2020.

Best Time


The best times to visit Alabama are spring and autumn, to avoid the heat in summer and the possible cold spells in winter. In the center-north you can choose the months of April and October, while in the center-south you can choose the periods from mid-March to mid-April and from mid-October to mid-November.
However, in spring there is a greater risk of tornadoes, while in autumn there is a risk of hurricanes, especially on the coast.


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