September weather forecastMountain View, NC
September
Weather in September
September, the first month of the autumn in Mountain View, is still a warm month, with an average temperature ranging between min 59.9°F (15.5°C) and max 80.4°F (26.9°C).Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a moderately hot 80.4°F (26.9°C) from August's hot 86.5°F (30.3°C). Mountain View's average low-temperature in September is measured at a moderate 59.9°F (15.5°C).Humidity
In September, the average relative humidity is 74%.Rainfall
In Mountain View, during September, the rain falls for 13.8 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Mountain View, during the entire year, the rain falls for 163.1 days and collects up to 32.01" (813mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of the month, sunrise is at 6:58 am and sunset at 7:52 pm. On the last day of September, in Mountain View, sunrise is at 7:20 am and sunset at 7:10 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Mountain View, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mountain View, NC
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (45.9°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure in September
Mountain View, NC
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Mountain View, NC
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Mountain View, NC
- Average humidity in September: 74%
The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Mountain View, NC
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is October (1.97").
Average rainfall days in September
Mountain View, NC
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Mountain View, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Mountain View, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Mountain View, NC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Mountain View, NC
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (10 days).
Average UV index in September
Mountain View, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Mountain View, NC
- Average cloud cover in September: 33
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Mountain View, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
