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
September reveals a small adjustment in temperature, transitioning from an average high of 83.8°F (28.8°C) in August to a still moderately hot 75.6°F (24.2°C). Harrison throughout September, experiences an average nighttime temperature of 55.2°F (12.9°C).Humidity
In Harrison, Nebraska, the average relative humidity in September is 45%.Rainfall
In Harrison, during September, the rain falls for 7.4 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Harrison, during the entire year, the rain falls for 94.9 days and collects up to 10.39" (264mm) 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. Throughout the year, there are 43.5 snowfall days, and 15.63" (397mm) of snow is accumulated.Daylight
In Harrison, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:38 pm MDT.
Sunshine
In Harrison, the average sunshine in September is 10.7h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing in Harrison?
How many hours of daylight does Harrison have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Harrison have in September?
How high is the UV index in September?
Average temperature in September
Harrison, NE
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (32°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).
Average pressure in September
Harrison, NE
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Harrison, NE
- Average wind speed in September: 10.5mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in September
Harrison, NE
- Average humidity in September: 45%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (44%).
Average rainfall in September
Harrison, NE
- Average rainfall in September: 0.67"
The wettest months (with the highest rainfall) are May and June (1.57").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Harrison, NE
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is December (2.7 days).
Average snowfall in September
Harrison, NE
- Average snowfall in September: 0.08"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Harrison, NE
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Harrison, NE
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Harrison, NE
- Average sunshine days in September: 19.7 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Harrison, NE
- Average UV index in September: 4
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
Harrison, NE
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Harrison, 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).
Harrison, Nebraska, USA
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