September weather forecastMcCook, NE
September
Weather in September
The transition from summer to autumn takes place in September. McCook experiences a decrease in average high temperatures to a more comfortable 80.6°F (27°C). This drop in temperature, coupled with lesser rainfall of 1.02" (26mm), makes for an excellent outdoor climate conducive to outdoor adventures. As the month progresses, leaves start to change colours, giving the city picturesque fall scenery.Temperature
September's onset introduces a mild reduction in the average high-temperature, from a tropical 88.3°F (31.3°C) in August to a moderately hot 80.6°F (27°C). An average low-temperature of 59.2°F (15.1°C) is anticipated throughout the nights in McCook during September.Heat index
The heat index value for September is estimated at 82.4°F (28°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Humidity
In September, the average relative humidity is 55%.Rainfall
In McCook, in September, it is raining for 9.4 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in McCook, there are 103 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
In McCook, snow does not fall in June through September.Daylight
In McCook, Nebraska, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:13 pm. On the last day of September, sunrise is at 7:38 am and sunset at 7:25 pm CDT.
Sunshine
In McCook, the average sunshine in September is 9.1h.UV index
In McCook, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
McCook, NE
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
McCook, NE
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
McCook, NE
- Average wind speed in September: 10.6mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
McCook, NE
- Average humidity in September: 55%
The month with the highest relative humidity is January (68%).
The months with the lowest relative humidity are July and October (54%).
Average rainfall in September
McCook, NE
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
McCook, NE
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
McCook, NE
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
McCook, NE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
McCook, NE
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in September
McCook, NE
- Average sunshine days in September: 17.1 days
The months with the most sunshine days are January and November (24.3 days).
The month with the least sunshine days is August (13.1 days).
Average UV index in September
McCook, NE
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
McCook, NE
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
McCook, NE
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
