NoMa, United States — Weather in September 2026

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

Cfa Humid Subtropical
8.3 /10
Excellent

September is an excellent month in NoMa

Climate Overview

NoMa, United States in September has warm conditions, with highs averaging 26.5°C (80°F). Rain falls on about 11 days this month.

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 29°C (83°F) at the start to 24°C (75°F) by month's end.

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

Expect around 9.9h of sunshine at the start of September, decreasing to 6.9h by the end.

The warmest days tend to fall around the 5th, averaging 29.1°C (84°F).

Compared to August, this month is about 3°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
27°C / 18°C
Feels Like
28°C / 19°C
Rain
11 days · 97 mm
Sunshine
8.6h / day
Humidity
74% — Humid
Wind
13 km/h
Wind Direction
NE (40°)
Gusts
31 km/h
Daylight
12.4 h
Cloud Cover
57%
Clear Sky Days
4.6
UV Index
5.2 — High
Dew Point
17°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 151015202530
Rainfall

Daily Sunshine

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

Daily Wind Speed

0 4 8 12 16 20 151015202530
Wind Speed
Sun Position
Sunrise 06:50
Daylight 12.4h
Sunset 19:16

What to Expect

Daytime temperatures around 27°C (80°F) are ideal for full-day outdoor exploration.

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

Recent yearly records for September have stayed close to the long-run average.

Compare Months

January
Poor
Temp
7°C / -1°C
Feels Like
3°C / -6°C
Rain
10days (84 mm) Wet
Sun
6.2h Fair
Humidity
68% Muggy
UV
2.6 Moderate
Snow Days
4days
View Details
February
Poor
Temp
10°C / 1°C
Feels Like
7°C / -3°C
Rain
10days (88 mm) Wet
Sun
6.7h Fair
Humidity
67% Muggy
UV
3.5 Moderate
Snow Days
4days
View Details
March
Fair
Temp
14°C / 4°C
Feels Like
11°C / 0°C
Rain
10days (84 mm) Wet
Sun
8.2h Good
Humidity
63% Muggy
UV
5 Moderate
Snow Days
2days
View Details
April best
Good
Temp
20°C / 9°C
Feels Like
18°C / 6°C
Rain
9days (84 mm) Wet
Sun
9.1h Good
Humidity
65% Muggy
UV
5.8 High
View Details
May best
Excellent
Temp
24°C / 14°C
Feels Like
24°C / 13°C
Rain
13days (118 mm) Wet
Sun
9.3h Good
Humidity
73% Muggy
UV
6.5 High
View Details
June best
Excellent
Temp
29°C / 19°C
Feels Like
31°C / 20°C
Rain
11days (112 mm) Wet
Sun
11.4h Excellent
Humidity
69% Muggy
UV
7.4 Very High
View Details
July
Fair
Temp
32°C / 22°C
Feels Like
36°C / 26°C
Rain
14days (152 mm) Wet
Sun
11.8h Excellent
Humidity
72% Muggy
UV
7.6 Very High
View Details
August
Good
Temp
30°C / 21°C
Feels Like
33°C / 24°C
Rain
12days (104 mm) Wet
Sun
10.6h Excellent
Humidity
74% Muggy
UV
6.8 High
View Details
September best
Excellent
Temp
27°C / 18°C
Feels Like
28°C / 19°C
Rain
11days (97 mm) Wet
Sun
8.6h Good
Humidity
74% Muggy
UV
5.2 High
View Details
October best
Excellent
Temp
21°C / 12°C
Feels Like
20°C / 11°C
Rain
8days (78 mm) Wet
Sun
7.9h Good
Humidity
72% Muggy
UV
4.5 Moderate
View Details
November
Fair
Temp
14°C / 5°C
Feels Like
12°C / 2°C
Rain
8days (70 mm) Wet
Sun
7.3h Good
Humidity
68% Muggy
UV
3.1 Moderate
Snow Days
1days
View Details
December
Poor
Temp
9°C / 1°C
Feels Like
6°C / -3°C
Rain
9days (98 mm) Wet
Sun
5.9h Fair
Humidity
70% Muggy
UV
2.3 Moderate
Snow Days
2days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 7°C / -1°C 3°C / -6°C 10days (84 mm) Wet 6.2h Fair 68% Muggy 2.6 Moderate Poor View Details
February 10°C / 1°C 7°C / -3°C 10days (88 mm) Wet 6.7h Fair 67% Muggy 3.5 Moderate Poor View Details
March 14°C / 4°C 11°C / 0°C 10days (84 mm) Wet 8.2h Good 63% Muggy 5 Moderate Fair View Details
April best 20°C / 9°C 18°C / 6°C 9days (84 mm) Wet 9.1h Good 65% Muggy 5.8 High Good View Details
May best 24°C / 14°C 24°C / 13°C 13days (118 mm) Wet 9.3h Good 73% Muggy 6.5 High Excellent View Details
June best 29°C / 19°C 31°C / 20°C 11days (112 mm) Wet 11.4h Excellent 69% Muggy 7.4 Very High Excellent View Details
July 32°C / 22°C 36°C / 26°C 14days (152 mm) Wet 11.8h Excellent 72% Muggy 7.6 Very High Fair View Details
August 30°C / 21°C 33°C / 24°C 12days (104 mm) Wet 10.6h Excellent 74% Muggy 6.8 High Good View Details
September best 27°C / 18°C 28°C / 19°C 11days (97 mm) Wet 8.6h Good 74% Muggy 5.2 High Excellent View Details
October best 21°C / 12°C 20°C / 11°C 8days (78 mm) Wet 7.9h Good 72% Muggy 4.5 Moderate Excellent View Details
November 14°C / 5°C 12°C / 2°C 8days (70 mm) Wet 7.3h Good 68% Muggy 3.1 Moderate Fair View Details
December 9°C / 1°C 6°C / -3°C 9days (98 mm) Wet 5.9h Fair 70% Muggy 2.3 Moderate Poor 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

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

September is typically excellent for visiting NoMa, with average highs of 27°C (80°F) and around 11 rainy days. NoMa, United States in September has warm conditions, with highs averaging 26.5°C (80°F). Rain falls on about 11 days th
NoMa typically sees around 11 rainy days in September with 97 mm (3.8 in) of total rainfall. Pack a waterproof jacket.
Evenings in NoMa during September are mild at 18°C (64°F). A light cardigan is usually enough.
With highs of 27°C (80°F) and lows of 18°C (64°F) in September, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in NoMa with comfortable temperatures and lower chances of rain.
The average UV index in NoMa during September is 5 (moderate). Sunscreen and sunglasses are recommended during midday hours.
NoMa gets approximately 12 hours of daylight per day in September, with around 9 hours of sunshine.
Snow is uncommon in NoMa during September based on 10-year climate averages.

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