|Atlanta Travel Guide|
Average annual rainfall is about 54 inches (1370 mm) typically with late winter and early spring (as well as July) being the wettest and fall being the driest. Average annual snowfall is about 2.1 inches (5 cm), falling mostly in January and early February.
Snow and ice occurs as early as December or as late as mid-March; since 1878 snow has fallen only three times in October and four in April. Winters are cold for short periods, with January daily lows around 33 °F (1 °C) and highs near 52 °F (11 °C). Summers are hot and humid, with July mornings around 71 °F (22 °C) and afternoons around 89 °F (32 °C), slight breezes, and typically a 20–30% chance of afternoon thunderstorms.
Spring weather is pleasant but variable, as cold fronts often bring strong or severe thunderstorms to almost all of the eastern and central U.S.. Pollen counts tend to be extraordinarily high in the spring, regularly exceeding 2000 particles per cubic meter in April and causing hay fever. Pine pollen leaves a fine yellow-green film on everything for much of that month.
The rain helps wash out Atlanta's abundant oak, pine, and grass pollens, and fuels beautiful blooms from native dogwood trees, as well as azaleas, forsythias, magnolias, and peach trees (both flowering-only and fruiting).
The city-wide floral display runs during March and April, and inspires the Dogwood Festival, one of Atlanta's largest. Fall is also pleasant, with less rain and fewer storms, lower humidity, and leaves changing color from late October to mid-November, especially during drier years.