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United States weather

Weather in Monroe County, Florida for September 2025

Your guide to Monroe County weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Coastal Flood Statement - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Monroe County has been nearly identical to the historical average, with a temperature of 29.2 °F (showing only a slight deviation of -0.3 °F).

  • The forecast for the next days in Monroe County predicts temperatures to be around 29 °F, close to the historical average.

  • In general, the average temperature in Monroe County at the beginning of September is 29.3 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.9 °F by the end of September.

    • Rain 🌧️

  • Monroe County experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 228.5 mm.

    • More

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

Average dry days
7
Dry days
Average rainy days
23
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/28°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Monroe County Weather September

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

Temperatures trend during September in Monroe County

See the weather trend as well as the moving average line

September weather in Monroe County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
 30° /28° 11.5 mm 7
Sept. 2 Thundery outbreaks possible
Thundery outbreaks possible
 29° /28° 27 mm 6
Sept. 3 Light rain shower
Light rain shower
 29° /27° 19.1 mm 6
Sept. 4 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 29° /27° 28 mm 6
Sept. 5 Patchy rain possible
Patchy rain possible
 29° /28° 7.2 mm 6
Sept. 6 Partly cloudy
Partly cloudy
 30° /28° 14.2 mm 7
Sept. 7 Cloudy
Cloudy
 29° /28° 1.5 mm 6
Sept. 8 Sunny
Sunny
 30° /28° 5.5 mm 7
Sept. 9 Patchy rain possible
Patchy rain possible
 29° /28° 2.2 mm 6
Sept. 10 Partly cloudy
Partly cloudy
 30° /28° 0.7 mm 7
Sept. 11 Patchy rain possible
Patchy rain possible
 30° /28° 1.4 mm 7
Sept. 12 Cloudy
Cloudy
 30° /28° 0 mm 7
Sept. 13 Light rain shower
Light rain shower
 29° /27° 13.2 mm 6
Sept. 14 Partly cloudy
Partly cloudy
 30° /28° 1.1 mm 7
Sept. 15 Patchy rain possible
Patchy rain possible
 31° /28° 2.4 mm 2.1
Sept. 16 Overcast
Overcast
 29° /29° 0 mm 2.1
Sept. 17 Partly cloudy
Partly cloudy
 31° /29° 0 mm 0.6
Sept. 18 Heavy rain
Heavy rain
 28° /25° 36.5 mm 1.8
Sept. 19 Moderate rain
Moderate rain
 28° /27° 5.4 mm 0
Sept. 20 Patchy rain possible
Patchy rain possible
 28° /28° 0.4 mm 6
Sept. 21 Partly cloudy
Partly cloudy
 29° /28° 0.1 mm 7
Sept. 22 Patchy rain possible
Patchy rain possible
 29° /28° 0.1 mm 6
Sept. 23 Patchy rain possible
Patchy rain possible
 28° /27° 2.7 mm 6
Sept. 24 Patchy rain possible
Patchy rain possible
 30° /29° 0.3 mm 6
Sept. 25 Patchy rain possible
Patchy rain possible
 29° /29° 0.3 mm 6
Sept. 26 Partly cloudy
Partly cloudy
 29° /29° 0 mm 7
Sept. 27 Partly cloudy
Partly cloudy
 29° /29° 0.1 mm 7
Sept. 28 Partly cloudy
Partly cloudy
 28° /28° 0 mm 7
Sept. 29 Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /26° 5.6 mm 6
Sept. 30 Patchy rain possible
Patchy rain possible
 28° /27° 1.6 mm 6
Next
Important Notice
Our weather forecast for Monroe 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 Monroe County forecast closer to your planned date for the most up-to-date weather information.
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Monroe County in September - FAQ

What are the expected maximum and minimum temperatures in Monroe County during September?
During September, expect a variety of temperatures with highs around 29° and lows near 28°, suitable for diverse activities and preferences.
How much rainfall should be expected in Monroe County during September?
Significant rainfall exceeding 228.5 mm is expected in Monroe County during September, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Monroe County during September?
The average wind speed in Monroe County during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Monroe County

Explore the daily rainfall trends and prepare for Monroe Countys September weather 💧

UV exposure in Monroe 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 Monroe County?

Get accurate weather forecasts for Monroe County, located at latitude 24.555 and longitude -81.782. Stay updated with localized weather information tailored for Monroe County.

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