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Gwinnett County (Lawrenceville)
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United States weather

Weather in Gwinnett County, Georgia for September 2027

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

    Rain 🌧️

  • Gwinnett County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 41.2 mm.

    • More

  • Is September a good time to visit Gwinnett County? check out the best time to travel to Gwinnett County page.

  • ✨ Is September a good time to visit Gwinnett County? – Ask the AI Weatherman

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/20°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
63 %
Avg humidity

Gwinnett County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
30°
2
Partly cloudy
32°
3
Partly cloudy
32°
4
Partly cloudy
34°
5
Partly cloudy
35°
6
Thundery outbreaks possible
33°
7
Mist
28°
8
Overcast
28°
9
Overcast
29°
10
Cloudy
30°
11
Partly cloudy
30°
12
Light rain
27°
13
Partly cloudy
30°
14
Mist
32°
15
Overcast
29°
16
Partly cloudy
30°
17
Patchy rain possible
30°
18
Partly cloudy
32°
19
Thundery outbreaks possible
31°
20
Thundery outbreaks possible
31°
21
Patchy rain possible
30°
22
Light rain
30°
23
Cloudy
27°
24
Overcast
26°
25
Moderate or heavy rain shower
25°
26
Light rain
27°
27
Patchy rain possible
26°
28
Mist
27°
29
Cloudy
28°
30
Overcast
26°

Temperatures trend during September in Gwinnett County

See the weather trend as well as the moving average line

September weather in Gwinnett County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Overcast
Overcast
 30° /20° 0 mm 8
Sept. 2 Partly cloudy
Partly cloudy
 32° /20° 0 mm 9.5
Sept. 3 Partly cloudy
Partly cloudy
 32° /20° 0 mm 9.5
Sept. 4 Partly cloudy
Partly cloudy
 34° /22° 0 mm 9.4
Sept. 5 Partly cloudy
Partly cloudy
 35° /22° 0.1 mm 9.3
Sept. 6 Thundery outbreaks possible
Thundery outbreaks possible
 33° /23° 0 mm 8
Sept. 7 Mist
Mist
 28° /21° 0 mm 7
Sept. 8 Overcast
Overcast
 28° /19° 0 mm 7
Sept. 9 Overcast
Overcast
 29° /19° 0 mm 8
Sept. 10 Cloudy
Cloudy
 30° /19° 0.2 mm 8.9
Sept. 11 Partly cloudy
Partly cloudy
 30° /20° 0.8 mm 8.8
Sept. 12 Light rain
Light rain
 27° /21° 7.2 mm 6
Sept. 13 Partly cloudy
Partly cloudy
 30° /21° 0.2 mm 8.6
Sept. 14 Mist
Mist
 32° /20° 0 mm 8.5
Sept. 15 Overcast
Overcast
 29° /21° 0.9 mm 7
Sept. 16 Partly cloudy
Partly cloudy
 30° /20° 0.9 mm 8.4
Sept. 17 Patchy rain possible
Patchy rain possible
 30° /19° 2.4 mm 8.3
Sept. 18 Partly cloudy
Partly cloudy
 32° /21° 0.2 mm 8.2
Sept. 19 Thundery outbreaks possible
Thundery outbreaks possible
 31° /22° 2.5 mm 6
Sept. 20 Thundery outbreaks possible
Thundery outbreaks possible
 31° /21° 1.9 mm 7
Sept. 21 Patchy rain possible
Patchy rain possible
 30° /21° 1.5 mm 6
Sept. 22 Light rain
Light rain
 30° /20° 5.4 mm 5
Sept. 23 Cloudy
Cloudy
 27° /18° 0.8 mm 5
Sept. 24 Overcast
Overcast
 26° /19° 0.1 mm 5
Sept. 25 Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /18° 8.3 mm 5
Sept. 26 Light rain
Light rain
 27° /18° 6.1 mm 5
Sept. 27 Patchy rain possible
Patchy rain possible
 26° /17° 2 mm 5
Sept. 28 Mist
Mist
 27° /16° 0 mm 6
Sept. 29 Cloudy
Cloudy
 28° /18° 0 mm 7
Sept. 30 Overcast
Overcast
 26° /18° 0 mm 6
Next
Important Notice
Our weather forecast for Gwinnett 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 Gwinnett County forecast closer to your planned date for the most up-to-date weather information.
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Gwinnett County in September - FAQ

What are the expected maximum and minimum temperatures in Gwinnett County during September?
During September, expect a variety of temperatures with highs around 29° and lows near 20°, suitable for diverse activities and preferences.

How much rainfall should be expected in Gwinnett County during September?
In September, Gwinnett County can expect light to moderate rainfall, totaling 41.2 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Gwinnett County during September?
The average wind speed in Gwinnett County during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Gwinnett County

Explore the daily rainfall trends and prepare for Gwinnett Countys September weather 💧
Typically, Gwinnett County has 7 rainy days in September with a total of 41.2 mm of rainfall.

UV exposure in Gwinnett County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Gwinnett County
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Lawrenceville
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