Hattiesburg (MS)
September
Weather in Hattiesburg, Mississippi for September 2026
Your guide to Hattiesburg weather in September - trends and predictions
So far, September 2026 in Hattiesburg is slightly warmer than the historical average by 1.2 °F.
Expect cooler weather in the next days in Hattiesburg with the forecast suggesting a temperature of 31.3 °F, lower than the historical average.
In general, the average temperature in Hattiesburg at the beginning of September is 34.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 31.6 °F by the end of September.
With an average of 3 rainy days, Hattiesburg experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
27
Dry days
3
Rainy days
0
Snow days
31°/21°
Temperatures
10 km/h
Avg max wind
65 %
Avg humidity
Hattiesburg Weather September
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Temperatures trend during September in Hattiesburg
See the weather trend as well as the moving average line
September weather in Hattiesburg day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 34° /22° | 0 mm | 10 | |
| Sept. 2 |  Cloudy | 35° /22° | 0.8 mm | 11 | |
| Sept. 3 |  Heavy rain at times | 34° /22° | 4.5 mm | 11 | |
| Sept. 4 |  Thundery outbreaks possible | 33° /22° | 16.9 mm | 7 | |
| Sept. 5 |  Mist | 34° /23° | 0 mm | 10 | |
| Sept. 6 | Fog | 36° /22° | 0 mm | 11 | |
| Sept. 7 | Partly cloudy | 35° /23° | 0 mm | 11 | |
| Sept. 8 | Partly cloudy | 33° /20° | 0.1 mm | 11 | |
| Sept. 9 |  Overcast | 32° /22° | 0.1 mm | 6 | |
| Sept. 10 |  Sunny | 33° /22° | 2.8 mm | 8 | |
| Sept. 11 | Sunny | 32° /21° | 10.4 mm | 7 | |
| Sept. 12 | Overcast | 33° /21° | 1.4 mm | 10 | |
| Sept. 13 | Mist | 33° /22° | 2 mm | 8 | |
| Sept. 14 | Fog | 33° /22° | 0.6 mm | 9 | |
| Sept. 15 | Partly cloudy | 35° /21° | 0.1 mm | 10 | |
| Sept. 16 | Partly cloudy | 33° /22° | 2.4 mm | 10 | |
| Sept. 17 | Mist | 34° /21° | 0 mm | 9 | |
| Sept. 18 | Overcast | 33° /20° | 0 mm | 9 | |
| Sept. 19 | Overcast | 35° /21° | 0 mm | 9 | |
| Sept. 20 | Partly cloudy | 35° /22° | 0.9 mm | 9 | |
| Sept. 21 | Cloudy | 33° /22° | 6.4 mm | 7 | |
| Sept. 22 | Cloudy | 34° /21° | 0 mm | 9 | |
| Sept. 23 | Sunny | 35° /22° | 0 mm | 8.7 | |
| Sept. 24 | Overcast | 33° /22° | 0 mm | 8.2 | |
| Sept. 25 | Overcast | 31° /18° | 0 mm | 8 | |
| Sept. 26 | Overcast | 31° /20° | 0 mm | 6.8 | |
| Sept. 27 | Overcast | 32° /20° | 0 mm | 7 | |
| Sept. 28 | Overcast | 31° /20° | 0 mm | 8 | |
| Sept. 29 | Sunny | 32° /21° | 5.3 mm | 8 | |
| Sept. 30 | Mist | 31° /23° | 4.6 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Hattiesburg 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 Hattiesburg forecast closer to your planned date for the most up-to-date weather information.
Change Month
Hattiesburg in September - FAQ
What are the expected maximum and minimum temperatures in Hattiesburg during September?
During September, expect a variety of temperatures with highs around 31° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hattiesburg during September?
In September, Hattiesburg can expect light to moderate rainfall, totaling 28.9 mm across approximately 3 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Hattiesburg during September?
The average wind speed in Hattiesburg during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hattiesburg
Explore the daily rainfall trends and prepare for Hattiesburgs September weather 💧
Typically, Hattiesburg has 3 rainy days in September with a total of 28.9 mm of rainfall.
UV exposure in Hattiesburg during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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