Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A minor decrease in the average high-temperature is observed during September, shifting from 82.9°F (28.3°C) in August to a still moderately hot 76.8°F (24.9°C). An average low-temperature of 56.5°F (13.6°C) is observed during September nights in Duncan.Humidity
In September, the average relative humidity is 69%.Rainfall
In Duncan, Nebraska, in September, it is raining for 11.9 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 113.1 rainfall days, and 19.76" (502mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Duncan.Daylight
In September, the average length of the day in Duncan is 12h and 28min.On the first day of the month, sunrise is at 6:57 am and sunset at 8:02 pm. On the last day of September, in Duncan, sunrise is at 7:26 am and sunset at 7:12 pm CDT.
Sunshine
In Duncan, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Duncan in September?
What is the average humidity in September in Duncan?
How much does it rain in Duncan in September?
When it does not snow in Duncan?
Does it snow in Duncan in September?
What is the average length of the day in September in Duncan?
What time are sunrise and sunset in September in Duncan?
How many hours of sunshine does Duncan have in September?
How high is the UV index in September in Duncan?
Average temperature in September
Duncan, NE
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Duncan, NE
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Duncan, NE
- Average wind speed in September: 8.9mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Duncan, NE
- Average humidity in September: 69%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (63%).
Average rainfall in September
Duncan, NE
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.95").
The driest months (with the least rainfall) are January and February (0.67").
Average rainfall days in September
Duncan, NE
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Duncan, NE
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Duncan, NE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Duncan, NE
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Duncan, NE
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Duncan, NE
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Duncan, NE
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Duncan, 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).
Duncan, Nebraska, USA
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