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
With the commencement of September, Henderson records a moderate temperature decline, with the average high easing from August's very hot 100°F (37.8°C) to a hot 92.1°F (33.4°C). The nighttime temperature, during September, averages of 74.1°F (23.4°C).Humidity
The average relative humidity in September is 22%.Rainfall
In September, in Henderson, the rain falls for 2.4 days. Throughout September, 0.08" (2mm) of precipitation is accumulated. Throughout the year, there are 37 rainfall days, and 3.43" (87mm) of precipitation is accumulated.Snowfall
In Henderson, Nevada, snow does not fall in January, March through December.Daylight
The average length of the day in September in Henderson is 12h and 23min.On the first day of the month, sunrise is at 6:12 am and sunset at 7:07 pm. On the last day of September, in Henderson, sunrise is at 6:34 am and sunset at 6:24 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
In September, the average daily maximum UV index in Henderson, Nevada, is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Henderson in September?
What is the average humidity in September in Henderson?
How much does it rain in Henderson in September?
When it does not snow in Henderson?
How many hours of daylight does Henderson have in September?
When are sunrise and sunset in September in Henderson?
How long on average sun shines in September in Henderson?
What is the UV index intensity in September in Henderson?
Average temperature in September
Henderson, NV
- Average high temperature in September: 92.1°F
The warmest month (with the highest average high temperature) is July (101.1°F).
The month with the lowest average high temperature is December (53.1°F).
- Average low temperature in September: 74.1°F
The month with the highest average low temperature is July (81.5°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure in September
Henderson, NV
- Average pressure in September: 29.85"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.76"Hg).
Average wind speed in September
Henderson, NV
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are April and June (9.3mph).
The calmest month (with the lowest average wind speed) is January (5.7mph).
Average humidity in September
Henderson, NV
- Average humidity in September: 22%
The month with the highest relative humidity is January (45%).
The month with the lowest relative humidity is June (14%).
Average rainfall in September
Henderson, NV
- Average rainfall in September: 0.08"
The wettest month (with the highest rainfall) is February (0.55").
The driest month (with the least rainfall) is June (0").
Average rainfall days in September
Henderson, NV
- Average rainfall days in September: 2.4 days
The month with the highest number of rainy days is March (5.3 days).
The month with the least rainy days is June (0.6 days).
Average snowfall in September
Henderson, NV
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Henderson, NV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Henderson, NV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 7h and 0min).
Average sunshine days in September
Henderson, NV
- Average sunshine days in September: 26.2 days
The month with the most sunshine days is June (29.1 days).
The month with the least sunshine days is February (23 days).
Average UV index in September
Henderson, NV
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Henderson, NV
- Average cloud cover in September: 6
The month with the most cloud cover is December (Cloud cover 20).
The months with the least cloud cover are June, August and September (Cloud cover 6).
Average visibility in September
Henderson, NV
- 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).
Henderson, Nevada, USA
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