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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from 82°F (27.8°C) in August to a still warm 76.6°F (24.8°C). From the heights of the September heat, Whiteriver records a mean nighttime low of 54.5°F (12.5°C).Humidity
In Whiteriver, the average relative humidity in September is 47%.Rainfall
In Whiteriver, in September, during 8.8 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Whiteriver, Arizona, during the entire year, the rain falls for 71.1 days and collects up to 9.96" (253mm) of precipitation.Snowfall
In Whiteriver, snow does not fall in June through September.Daylight
The average length of the day in September in Whiteriver is 12h and 22min.On the first day of September in Whiteriver, sunrise is at 5:54 am and sunset at 6:45 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 6:05 pm MST.
Sunshine
The average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Whiteriver?
What is the average humidity in September in Whiteriver?
How much does it rain in Whiteriver in September?
When it does not snow in Whiteriver?
Does it snow in Whiteriver in September?
What is the average length of the day in September in Whiteriver?
When are sunrise and sunset in September in Whiteriver?
How long on average sun shines in September in Whiteriver?
What is the UV index intensity in September in Whiteriver?
Average temperature in September
Whiteriver, AZ
- Average high temperature in September: 76.6°F
The warmest month (with the highest average high temperature) is June (83.3°F).
The months with the lowest average high temperature are January and December (45.7°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (61°F).
The coldest months (with the lowest average low temperature) are January and December (27°F).
Average pressure in September
Whiteriver, AZ
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Whiteriver, AZ
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Whiteriver, AZ
- Average humidity in September: 47%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (26%).
Average rainfall in September
Whiteriver, AZ
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is June (0.16").
Average rainfall days in September
Whiteriver, AZ
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is June (2.8 days).
Average snowfall in September
Whiteriver, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Whiteriver, AZ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Whiteriver, AZ
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
Whiteriver, AZ
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is July (9.7 days).
Average UV index in September
Whiteriver, AZ
- 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
Whiteriver, AZ
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 8).
Average visibility in September
Whiteriver, AZ
- 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).
Whiteriver, Arizona, USA
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