Coweta, United States — Weather in September 2026

Monthly climate averages for Coweta, United States. Based on 10-year ERA5 reanalysis data.

Cfa Humid Subtropical
8.3 /10
Excellent

September is an excellent month in Coweta

Climate Overview

Coweta, United States in September has hot conditions, with highs reaching 30°C (86°F) and afternoons the warmest part of the day.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 31°C (88°F) at the start to 28°C (82°F) by month's end.

Rainfall is heaviest during the last third of the month, while the middle tends to be drier.

Expect around 10.7h of sunshine at the start of September, decreasing to 9.8h by the end.

The warmest days tend to fall around the 5th, averaging 31.4°C (89°F).

Compared to August, this month is about 3°C cooler with 3 fewer rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
30°C / 21°C
Feels Like
32°C / 22°C
Rain
6 days · 88 mm
Sunshine
10.1h / day
Humidity
65% — Muggy
Wind
14 km/h
Wind Direction
SE (137°)
Gusts
32 km/h
Daylight
12.4 h
Cloud Cover
38%
Clear Sky Days
12.1
UV Index
6.3 — High
Dew Point
18°C — Humid
Moon Phase
Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

36°C 32°C 28°C 24°C 20°C 16°C 12°C 151015202530
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 8 mm 10 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202530
Wind Speed
Sun Position
Sunrise 07:05
Daylight 12.4h
Sunset 19:30

What to Expect

Daytime temperatures around 30°C (86°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
9°C / 0°C
Feels Like
6°C / -4°C
Rain
7days (65 mm) Good
Sun
6.7h Fair
Humidity
67% Muggy
UV
3.1 Moderate
Snow Days
3days
View Details
February
Fair
Temp
13°C / 2°C
Feels Like
9°C / -2°C
Rain
7days (64 mm) Good
Sun
7.1h Good
Humidity
66% Muggy
UV
4.1 Moderate
Snow Days
2days
View Details
March best
Good
Temp
18°C / 8°C
Feels Like
16°C / 5°C
Rain
9days (104 mm) Wet
Sun
8.1h Good
Humidity
64% Muggy
UV
5.6 High
View Details
April best
Excellent
Temp
22°C / 12°C
Feels Like
21°C / 9°C
Rain
10days (171 mm) Wet
Sun
8.9h Good
Humidity
65% Muggy
UV
6.1 High
View Details
May best
Excellent
Temp
26°C / 17°C
Feels Like
27°C / 17°C
Rain
13days (188 mm) Wet
Sun
9.8h Good
Humidity
71% Muggy
UV
7.2 Very High
View Details
June
Fair
Temp
31°C / 22°C
Feels Like
35°C / 24°C
Rain
8days (107 mm) Wet
Sun
11.8h Excellent
Humidity
68% Muggy
UV
7.8 Very High
View Details
July
Poor
Temp
33°C / 25°C
Feels Like
38°C / 28°C
Rain
9days (90 mm) Wet
Sun
12.2h Excellent
Humidity
66% Muggy
UV
7.8 Very High
View Details
August
Fair
Temp
33°C / 24°C
Feels Like
36°C / 27°C
Rain
9days (86 mm) Wet
Sun
11.4h Excellent
Humidity
67% Muggy
UV
7.2 Very High
View Details
September best
Excellent
Temp
30°C / 21°C
Feels Like
32°C / 22°C
Rain
6days (88 mm) Good
Sun
10.1h Excellent
Humidity
65% Muggy
UV
6.3 High
View Details
October best
Excellent
Temp
23°C / 15°C
Feels Like
23°C / 13°C
Rain
8days (109 mm) Wet
Sun
8.4h Good
Humidity
64% Muggy
UV
4.7 Moderate
View Details
November
Good
Temp
17°C / 8°C
Feels Like
15°C / 5°C
Rain
6days (71 mm) Good
Sun
7.3h Good
Humidity
67% Muggy
UV
3.5 Moderate
View Details
December
Fair
Temp
12°C / 4°C
Feels Like
9°C / 0°C
Rain
5days (51 mm) Good
Sun
6.6h Fair
Humidity
68% Muggy
UV
2.8 Moderate
Snow Days
1days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 9°C / 0°C 6°C / -4°C 7days (65 mm) Good 6.7h Fair 67% Muggy 3.1 Moderate Poor View Details
February 13°C / 2°C 9°C / -2°C 7days (64 mm) Good 7.1h Good 66% Muggy 4.1 Moderate Fair View Details
March best 18°C / 8°C 16°C / 5°C 9days (104 mm) Wet 8.1h Good 64% Muggy 5.6 High Good View Details
April best 22°C / 12°C 21°C / 9°C 10days (171 mm) Wet 8.9h Good 65% Muggy 6.1 High Excellent View Details
May best 26°C / 17°C 27°C / 17°C 13days (188 mm) Wet 9.8h Good 71% Muggy 7.2 Very High Excellent View Details
June 31°C / 22°C 35°C / 24°C 8days (107 mm) Wet 11.8h Excellent 68% Muggy 7.8 Very High Fair View Details
July 33°C / 25°C 38°C / 28°C 9days (90 mm) Wet 12.2h Excellent 66% Muggy 7.8 Very High Poor View Details
August 33°C / 24°C 36°C / 27°C 9days (86 mm) Wet 11.4h Excellent 67% Muggy 7.2 Very High Fair View Details
September best 30°C / 21°C 32°C / 22°C 6days (88 mm) Good 10.1h Excellent 65% Muggy 6.3 High Excellent View Details
October best 23°C / 15°C 23°C / 13°C 8days (109 mm) Wet 8.4h Good 64% Muggy 4.7 Moderate Excellent View Details
November 17°C / 8°C 15°C / 5°C 6days (71 mm) Good 7.3h Good 67% Muggy 3.5 Moderate Good View Details
December 12°C / 4°C 9°C / 0°C 5days (51 mm) Good 6.6h Fair 68% Muggy 2.8 Moderate Fair View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

September is typically excellent for visiting Coweta, with average highs of 30°C (86°F) and around 6 rainy days. Coweta, United States in September has hot conditions, with highs reaching 30°C (86°F) and afternoons the warmest part o
Coweta typically sees around 6 rainy days in September with 88 mm (3.5 in) of total rainfall. An umbrella should suffice.
Nights stay pleasantly warm in Coweta during September, around 21°C (70°F). Light evening wear is sufficient.
With highs of 30°C (86°F) and lows of 21°C (70°F) in September, we recommend: Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Coweta with comfortable temperatures and lower chances of rain.
The average UV index in Coweta during September is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Coweta gets approximately 12 hours of daylight per day in September, with around 10 hours of sunshine.
Snow is uncommon in Coweta during September based on 10-year climate averages.

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