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
As September arrives, Harrisburg's weather displays a minor decrease in high-temperatures, transitioning from August's 85.5°F (29.7°C) to a still moderately hot 77.5°F (25.3°C). A steep decline to a cool 54°F (12.2°C) characterizes the September nights in Harrisburg.Humidity
With an average relative humidity of 46%, September is the least humid month.Rainfall
In September, the rain falls for 8.4 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. In Harrisburg, during the entire year, the rain falls for 110 days and collects up to 14.84" (377mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Harrisburg, during the entire year, snow falls for 39.8 days and aggregates up to 17.36" (441mm) of snow.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:37 pm MDT.
Sunshine
The average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing in Harrisburg?
What is the average length of the day in September in Harrisburg?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Harrisburg, NE
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (35.8°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
Harrisburg, NE
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Harrisburg, NE
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in September
Harrisburg, NE
- Average humidity in September: 46%
The month with the highest relative humidity is January (69%).
The month with the lowest relative humidity is September (46%).
Average rainfall in September
Harrisburg, NE
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Harrisburg, NE
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
Harrisburg, NE
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Harrisburg, NE
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Harrisburg, 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: 10h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Harrisburg, NE
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Harrisburg, 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
Harrisburg, NE
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Harrisburg, 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).
Harrisburg, Nebraska, USA
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