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Weather in Indian River County, Florida for September 2026

Your guide to Indian River County weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Indian River County at the beginning of September is 29.3 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 29.4 °C by the end of September.

  • Rain 🌧️

  • Indian River County experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 520.6 mm.

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Average dry days
8
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/25°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Indian River County Weather September

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Temperatures trend during September in Indian River County

See the weather trend as well as the moving average line

September weather in Indian River County day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Mist
Mist
31° /23° 34 mm 9
Sept. 2 Moderate or heavy rain shower
Moderate or heavy rain shower
29° /26° 55.2 mm 4
Sept. 3 Thundery outbreaks possible
Thundery outbreaks possible
29° /26° 4.1 mm 5
Sept. 4 Moderate or heavy rain shower
Moderate or heavy rain shower
30° /26° 8.9 mm 7
Sept. 5 Moderate or heavy rain shower
Moderate or heavy rain shower
28° /24° 18.4 mm 3
Sept. 6 Moderate or heavy rain shower
Moderate or heavy rain shower
30° /24° 64.9 mm 6
Sept. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
28° /24° 59.4 mm 2
Sept. 8 Light rain shower
Light rain shower
29° /24° 6.7 mm 8
Sept. 9 Moderate or heavy rain shower
Moderate or heavy rain shower
28° /25° 28.6 mm 5
Sept. 10 Moderate or heavy rain shower
Moderate or heavy rain shower
31° /25° 26.5 mm 9
Sept. 11 Light rain shower
Light rain shower
29° /25° 3.2 mm 8
Sept. 12 Overcast
Overcast
28° /26° 0 mm 6
Sept. 13 Light rain shower
Light rain shower
27° /24° 20.3 mm 3
Sept. 14 Cloudy
Cloudy
29° /24° 6 mm 11
Sept. 15 Partly cloudy
Partly cloudy
30° /25° 0 mm 11
Sept. 16 Partly cloudy
Partly cloudy
30° /25° 0 mm 11
Sept. 17 Thundery outbreaks possible
Thundery outbreaks possible
28° /25° 20.2 mm 3
Sept. 18 Partly cloudy
Partly cloudy
29° /25° 0 mm 11
Sept. 19 Light rain shower
Light rain shower
28° /25° 7.2 mm 6
Sept. 20 Partly cloudy
Partly cloudy
30° /25° 0 mm 10
Sept. 21 Overcast
Overcast
28° /25° 0 mm 7
Sept. 22 Patchy light drizzle
Patchy light drizzle
30° /25° 1.6 mm 5
Sept. 23 Light rain shower
Light rain shower
29° /25° 14.4 mm 5
Sept. 24 Cloudy
Cloudy
30° /26° 0 mm 8
Sept. 25 Light rain shower
Light rain shower
29° /26° 8.1 mm 6
Sept. 26 Thundery outbreaks possible
Thundery outbreaks possible
31° /24° 72.2 mm 6
Sept. 27 Mist
Mist
29° /25° 0 mm 8
Sept. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
28° /26° 41.1 mm 5
Sept. 29 Light rain shower
Light rain shower
27° /25° 16.5 mm 5
Sept. 30 Moderate rain at times
Moderate rain at times
32° /25° 3.1 mm 9
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Important Notice
Our weather forecast for Indian River County 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 Indian River County forecast closer to your planned date for the most up-to-date weather information.

Indian River County in September - FAQ

What are the expected maximum and minimum temperatures in Indian River County during September?

During September, expect a variety of temperatures with highs around 29° and lows near 25°, suitable for diverse activities and preferences.

How much rainfall should be expected in Indian River County during September?

Significant rainfall exceeding 520.6 mm is expected in Indian River County during September, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Indian River County during September?

The average wind speed in Indian River County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Indian River County

Explore the daily rainfall trends and prepare for Indian River Countys September weather 💧
Typically, Indian River County has 22 rainy days in September with a total of 520.6 mm of rainfall.

UV exposure in Indian River County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Indian River County?

Get accurate weather forecasts for Indian River County, located at latitude 27.639 and longitude -80.397. Stay updated with localized weather information tailored for Indian River County.

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