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
In September, the average high-temperature marginally decreases from 82.9°F (28.3°C) in August to a still moderately hot 77°F (25°C). Washington reports an average nighttime low-temperature of 56.8°F (13.8°C) in September.Humidity
In September, the average relative humidity is 71%.Rainfall
In Washington, in September, during 12 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Washington, during the entire year, the rain falls for 115.6 days and collects up to 19.13" (486mm) of precipitation.Snowfall
In Washington, Nebraska, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:07 pm CDT.
Sunshine
In September, the average sunshine in Washington is 9h.UV index
In Washington, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. To avoid the Sun's strongest rays, limit exposure around the mid-day period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB 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 much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Washington have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September in Washington?
Average temperature in September
Washington, NE
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Washington, NE
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Washington, NE
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Washington, NE
- Average humidity in September: 71%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Washington, NE
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Washington, NE
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Washington, NE
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Washington, NE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Washington, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Washington, NE
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in September
Washington, 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
Washington, NE
- Average cloud cover in September: 27
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Washington, 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).
Washington, Nebraska, USA
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