Jacksonville weather in September
Long-run climate averages for Jacksonville, FL in September, plus what the forecast models say for the days ahead.
In September, Jacksonville averages 85°F by day and 73°F at night. It is the wettest month of the year here.
September in Jacksonville averages a daytime high of 85°F and an overnight low of 73°F, which reads as hot for this part of the world. It is also the wettest month, so build rain into any plan. Across the whole year Jacksonville sees roughly 49 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Jacksonville forecast with every model compared and how much they currently agree.
Jacksonville weather by month
what to expect in Jacksonville through the yearHere is Jacksonville's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Jacksonville by season.