Portales Weather in September

What's the weather like in Portales (New Mexico) in September 2025?

The climate in Portales during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Portales and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 13°C (55°F) is normal.

Portales weather averages (imperial / metric)
Daytime temperature 27.9°C 82.2°F
Nightly temperature 12.9°C 55.2°F
Average temperature 20.4°C 68.7°F
Daily sunshine 9.4 hrs
Avg rainfall 49 mm 1.9 ins
Rainy days 7 days
Sea temperature 21.7°C 71.1°F
Humidity 58%
Windspeed 16.6kph 10 mph

On average September is the 4th wettest month of the year in Portales with around 49mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

September temperatures in Portales

Portales average temperature in September

September rainfall

Portales average rain in September

September hourly sunshine

Portales average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Portales in September 2025.

Other monthly averages

Best places to visit in September

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Beta

Current (hourly) weather 15 day forecast

Portales weather stats

Portales weather statistics
Hottest month: July 32.6°C 90.7°F
Driest month: January 11mm 0.4ins
Sunniest month: June 12.1hrs
Coldest month: January 11°C 51.8°F
Wettest month: August 71mm 2.8ins
Map showing location of Portales (34.18619, -103.3344) Portales map pin © Google

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