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United States weather

Weather in Jacksonville, Florida for September 2025

Your guide to Jacksonville weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Coastal Flood Advisory - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Jacksonville has been significantly cooler than historical averages by -2 °F, with average temperature of 28.6 °F.

  • The forecast for the upcoming days in Jacksonville predicts a temperature of 31.9 °F, which is slightly above the historical average.

  • In general, the average temperature in Jacksonville at the beginning of September is 31.4 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 31.9 °F by the end of September.

    • Rain 🌧️

  • Jacksonville experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 308 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
4
Dry days
Average rainy days
26
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/23°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Jacksonville Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate or heavy rain shower
30°
2
Cloudy
31°
3
Cloudy
30°
4
Partly cloudy
31°
5
Overcast
33°
6
Partly cloudy
33°
7
Cloudy
32°
8
Thundery outbreaks possible
30°
9
Thundery outbreaks possible
28°
10
Light rain shower
29°
11
Thundery outbreaks possible
29°
12
Thundery outbreaks possible
31°
13
Moderate or heavy rain shower
31°
14
Weather Alert Sunny
30°
15
Partly cloudy
29°
16
Partly cloudy
30°
17
Sunny
31°
18
Patchy rain possible
31°
19
Sunny
31°
20
Sunny
30°
21
Sunny
32°
22
Sunny
34°
23
Sunny
34°
24
Patchy rain possible
34°
25
Patchy rain possible
34°
26
Sunny
34°
27
Sunny
32°
28
Torrential rain shower
29°
29
Moderate or heavy rain shower
30°
30
Mist
30°

Temperatures trend during September in Jacksonville

See the weather trend as well as the moving average line

September weather in Jacksonville day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /25° 26.7 mm 7
Sept. 2 Cloudy
Cloudy
 31° /24° 19 mm 7
Sept. 3 Cloudy
Cloudy
 30° /23° 1.7 mm 7
Sept. 4 Partly cloudy
Partly cloudy
 31° /23° 2.7 mm 7
Sept. 5 Overcast
Overcast
 33° /23° 6.3 mm 7
Sept. 6 Partly cloudy
Partly cloudy
 33° /23° 15.6 mm 8
Sept. 7 Cloudy
Cloudy
 32° /23° 1.8 mm 7
Sept. 8 Thundery outbreaks possible
Thundery outbreaks possible
 30° /22° 24.7 mm 6
Sept. 9 Thundery outbreaks possible
Thundery outbreaks possible
 28° /22° 30.5 mm 6
Sept. 10 Light rain shower
Light rain shower
 29° /23° 9.3 mm 7
Sept. 11 Thundery outbreaks possible
Thundery outbreaks possible
 29° /22° 26 mm 7
Sept. 12 Thundery outbreaks possible
Thundery outbreaks possible
 31° /23° 0.7 mm 7
Sept. 13 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /23° 6.1 mm 6
Sept. 14 Sunny
Sunny
 30° /23° 0 mm 1.6
Sept. 15 Partly cloudy
Partly cloudy
 29° /22° 0 mm 1.7
Sept. 16 Partly cloudy
Partly cloudy
 30° /22° 0 mm 2
Sept. 17 Sunny
Sunny
 31° /22° 0 mm 2
Sept. 18 Patchy rain possible
Patchy rain possible
 31° /24° 0.2 mm 0
Sept. 19 Sunny
Sunny
 31° /23° 0 mm 7
Sept. 20 Sunny
Sunny
 30° /23° 0 mm 7
Sept. 21 Sunny
Sunny
 32° /22° 0 mm 7
Sept. 22 Sunny
Sunny
 34° /22° 0 mm 7
Sept. 23 Sunny
Sunny
 34° /24° 0 mm 7
Sept. 24 Patchy rain possible
Patchy rain possible
 34° /24° 0.5 mm 6
Sept. 25 Patchy rain possible
Patchy rain possible
 34° /24° 0.5 mm 6
Sept. 26 Sunny
Sunny
 34° /23° 0 mm 7
Sept. 27 Sunny
Sunny
 32° /24° 0 mm 7
Sept. 28 Torrential rain shower
Torrential rain shower
 29° /22° 53.5 mm 6
Sept. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /23° 9.4 mm 7
Sept. 30 Mist
Mist
 30° /23° 10.6 mm 7
Next
Important Notice
Our weather forecast for Jacksonville in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Jacksonville forecast closer to your planned date for the most up-to-date weather information.
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Jacksonville in September - FAQ

What are the expected maximum and minimum temperatures in Jacksonville during September?
During September, expect a variety of temperatures with highs around 31° and lows near 23°, suitable for diverse activities and preferences.
How much rainfall should be expected in Jacksonville during September?
Significant rainfall exceeding 308 mm is expected in Jacksonville during September, occurring over more than 26 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Jacksonville during September?
The average wind speed in Jacksonville during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Jacksonville

Explore the daily rainfall trends and prepare for Jacksonvilles September weather 💧

UV exposure in Jacksonville during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Jacksonville?

Get accurate weather forecasts for Jacksonville, located at latitude 30.332 and longitude -81.656. Stay updated with localized weather information tailored for Jacksonville.

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