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
The move into September indicates a slight reduction in the average high-temperature, down from August's very hot 97.3°F (36.3°C) to a tropical 88.9°F (31.6°C). The low-temperature average for Winchester during September stands at an agreeable 71.2°F (21.8°C).Humidity
In September, the average relative humidity is 23%.Rainfall
In September, the rain falls for 4 days. Throughout September, 0.28" (7mm) of precipitation is accumulated. Throughout the year, there are 42.9 rainfall days, and 3.23" (82mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
The average length of the day in September 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, sunrise is at 6:35 am and sunset at 6:24 pm PDT.
Sunshine
In Winchester, the average sunshine in September is 10.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Winchester?
When is the sunrise / sunset in September?
How many hours of sunshine does Winchester have in September?
How high is the UV index in September?
Average temperature in September
Winchester, NV
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is July (98.4°F).
The month with the lowest average high temperature is December (50.9°F).
- Average low temperature in September: 71.2°F
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is December (38.8°F).
Average pressure in September
Winchester, 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
Winchester, NV
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).
Average humidity in September
Winchester, NV
- Average humidity in September: 23%
The month with the highest relative humidity is January (47%).
The month with the lowest relative humidity is June (15%).
Average rainfall in September
Winchester, NV
- Average rainfall in September: 0.28"
The wettest months (with the highest rainfall) are July and August (0.55").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Winchester, NV
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is July (6.1 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in September
Winchester, NV
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
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
Winchester, NV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Winchester, 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 42min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Winchester, NV
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is June (27.6 days).
The month with the least sunshine days is July (18.7 days).
Average UV index in September
Winchester, NV
- Average UV index in September: 6
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 2).
Average cloud cover in September
Winchester, NV
- Average cloud cover in September: 7
The months with the most cloud cover are January and December (Cloud cover 19).
The months with the least cloud cover are June and August (Cloud cover 6).
Average visibility in September
Winchester, 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).
Winchester, Nevada, USA
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