Milton experiences a humid subtropical climate (Köppen climate classification *Cfa*).
Summers are typically hot and humid, with average high temperatures in July and August reaching the upper 80s to low 90s Fahrenheit (30-34°C). Winters are generally mild to cool, with January highs in the low 50s (11°C) and overnight lows dropping to the low 30s (-1°C).
Precipitation is relatively evenly distributed throughout the year, averaging about 50 to 55 inches annually. Snowfall is infrequent and usually light, with the city seeing an average of 1 to 2 inches per year, though some winters pass with no measurable snow at all.
The best times to visit are during the spring (April to May) and autumn (September to October), when temperatures are moderate, and the local flora—particularly the spring dogwoods and fall foliage—is at its most vibrant. Natural disasters are rare, though the area is occasionally subject to severe thunderstorms and remnants of tropical storms moving inland.