McCook Weather in September

What's the weather like in McCook (Nebraska) in September 2025?

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

September is in the fall / autumn in McCook and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (80°F), whilst at night 10°C (50°F) is normal.

McCook weather averages (imperial / metric)
Daytime temperature 26.4°C 79.5°F
Nightly temperature 10°C 50°F
Average temperature 18.2°C 64.8°F
Daily sunshine 9.2 hrs
Avg rainfall 40 mm 1.6 ins
Rainy days 7 days
Sea temperature 18.5°C 65.2°F
Humidity 63%
Windspeed 18.7kph 12 mph

On average September is the 6th wettest month of the year in McCook with around 40mm 1.6 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 9.2 hours of sunshine per day.

September temperatures in McCook

McCook average temperature in September

September rainfall

McCook average rain in September

September hourly sunshine

McCook 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 McCook in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

McCook weather stats

McCook weather statistics
Hottest month: July 32.6°C 90.7°F
Driest month: January 10mm 0.4ins
Sunniest month: July 12hrs
Coldest month: January 3.7°C 38.7°F
Wettest month: May 86mm 3.4ins
Map showing location of McCook (40.20195, -100.62571) McCook map pin © Google

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