Decatur al forecast Average Temperatures in Decatur, AL Decatur's average high temperatures range from the mid-50s Fahrenheit (about 13 degrees Celsius) in January to the high 80s and low 90s Fahrenheit (around 32 degrees Celsius) in July and August. The city's average low temperatures range from the mid-30s Fahrenheit (around 2 degrees Celsius) in January to the mid-60s Fahrenheit (about 18 degrees Celsius) in July and August. It is worth noting that, due to the city's humid subtropical climate, summer nights can sometimes remain quite warm, with low temperatures rarely dipping below the mid-60s Fahrenheit (around 18 degrees Celsius). Similarly, winter nights can sometimes be quite chilly, with low temperatures occasionally dropping into the 20s Fahrenheit (-6 degrees Celsius) or even lower. Precipitation in Decatur, AL Decatur receives an average of 54 inches (about 137 centimeters) of precipitation per year. The city experiences its wettest months from December through March, with an average of 5 to 6 inches (about 13 to 15 centimeters) of precipitation per month during this time. The city's driest months are from August through October, with an average of 3 to 4 inches (about 8 to 10 centimeters) of precipitation per month during this period. In addition to its hot, humid summers and mild, wet winters, Decatur also experiences a few other weather patterns throughout the year. These include: Spring: Decatur's springs are typically mild and wet, with temperatures gradually warming up as the season progresses. This is also the time of year when the city experiences the majority of its severe weather, including thunderstorms and tornadoes. Autumn: Decatur's autumns are usually cool and crisp, with temperatures gradually cooling down as the season progresses. This is also the time of year when the city experiences its most pleasant weather, with cool, comfortable temperatures and lower humidity levels. Winter: Decatur's winters are typically mild and wet, with temperatures rarely dropping below freezing. The city does receive a small amount of snow each year, usually just a dusting or a light coating, but significant snowstorms are rare. Conclusion Precipitation in Decatur, AL Decatur receives an average of 54 inches (about 137 centimeters) of precipitation per year. The city experiences its wettest months from December through March, with an average of 5 to 6 inches (about 13 to 15 centimeters) of precipitation per month during this time. The city's driest months are from August through October, with an average of 3 to 4 inches (about 8 to 10 centimeters) of precipitation per month during this period. Decatur also experiences a handful of thunderstorms each year, primarily during the spring and summer months. These thunderstorms can sometimes be severe, bringing heavy rain, high winds, and even the occasional tornado. However, Decatur's location in the northern part of the state means that the city is less prone to tornado activity than areas further south in Alabama.