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United States weather

Weather in Hillsborough County for September 2025

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

    Temperatures

  • In general, the average temperature in Hillsborough County at the beginning of September is 32.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.3 °F by the end of September.

    • Rain 🌧️

  • Hillsborough County experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 276.1 mm.

    • More

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Average dry days
1
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/24°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Hillsborough County in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Moderate or heavy rain shower
31°
2
Moderate or heavy rain shower
32°
3
Moderate or heavy rain shower
32°
4
Heavy rain at times
33°
5
Moderate rain at times
32°
6
Moderate or heavy rain shower
33°
7
Moderate or heavy rain shower
33°
8
Moderate or heavy rain shower
31°
9
Moderate or heavy rain shower
31°
10
Moderate or heavy rain shower
31°
11
Moderate or heavy rain shower
31°
12
Moderate or heavy rain shower
33°
13
Moderate rain at times
32°
14
Moderate or heavy rain shower
32°
15
Moderate or heavy rain shower
31°
16
Moderate or heavy rain shower
31°
17
Moderate or heavy rain shower
31°
18
Patchy light rain with thunder
31°
19
Moderate or heavy rain shower
30°
20
Moderate rain at times
31°
21
Moderate rain at times
32°
22
Moderate rain at times
32°
23
Heavy rain at times
32°
24
Patchy rain possible
32°
25
Heavy rain at times
31°
26
Moderate rain at times
31°
27
Partly cloudy
30°
28
Moderate or heavy rain shower
29°
29
Sunny
30°
30
Sunny
29°
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Temperatures trend during September in Hillsborough County

See the weather trend as well as the moving average line

September weather 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
 31° /25° 10.1 mm 7
Sept. 2 Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /25° 6.1 mm 7
Sept. 3 Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /25° 5.1 mm 7
Sept. 4 Heavy rain at times
Heavy rain at times
 33° /24° 2.3 mm 7
Sept. 5 Moderate rain at times
Moderate rain at times
 32° /24° 3.1 mm 7
Sept. 6 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /26° 2.6 mm 7
Sept. 7 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /26° 4.9 mm 8
Sept. 8 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /25° 15.8 mm 7
Sept. 9 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /25° 7 mm 7
Sept. 10 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 7.9 mm 7
Sept. 11 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /25° 7.4 mm 7
Sept. 12 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 4.4 mm 7
Sept. 13 Moderate rain at times
Moderate rain at times
 32° /25° 2.5 mm 7
Sept. 14 Moderate or heavy rain shower
Moderate or heavy rain shower
 32° /25° 5.6 mm 7
Sept. 15 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /25° 6.5 mm 7
Sept. 16 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 16.6 mm 7
Sept. 17 Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /24° 10.7 mm 7
Sept. 18 Patchy light rain with thunder
Patchy light rain with thunder
 31° /24° 21.1 mm 7
Sept. 19 Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /24° 6.7 mm 7
Sept. 20 Moderate rain at times
Moderate rain at times
 31° /23° 4.5 mm 7
Sept. 21 Moderate rain at times
Moderate rain at times
 32° /23° 8.8 mm 7
Sept. 22 Moderate rain at times
Moderate rain at times
 32° /22° 0.7 mm 7
Sept. 23 Heavy rain at times
Heavy rain at times
 32° /23° 1.7 mm 7
Sept. 24 Patchy rain possible
Patchy rain possible
 32° /23° 1.8 mm 7
Sept. 25 Heavy rain at times
Heavy rain at times
 31° /23° 24.8 mm 7
Sept. 26 Moderate rain at times
Moderate rain at times
 31° /24° 14.9 mm 7
Sept. 27 Partly cloudy
Partly cloudy
 30° /24° 14.7 mm 7
Sept. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /23° 42.9 mm 7
Sept. 29 Sunny
Sunny
 30° /23° 11.4 mm 7
Sept. 30 Sunny
Sunny
 29° /22° 3.3 mm 7
Next
Important Notice
Our weather forecast for Hillsborough 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 Hillsborough County forecast closer to your planned date for the most up-to-date weather information.

Hillsborough County in September - FAQ

What are the expected maximum and minimum temperatures in Hillsborough County during September?
During September, expect a variety of temperatures with highs around 31° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hillsborough County during September?
Significant rainfall exceeding 276.1 mm is expected in Hillsborough County during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hillsborough County during September?
The average wind speed in Hillsborough County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Hillsborough County

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

UV exposure in Hillsborough 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 Hillsborough County?

Get accurate weather forecasts for Hillsborough County, located at latitude 27.948 and longitude -82.458. Stay updated with localized weather information tailored for Hillsborough County.

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