September weather forecastNew River, AZ
September
Weather in September
The first month of the autumn, September, is also a hot month in New River, Arizona, with an average temperature fluctuating between 74.3°F (23.5°C) and 92.3°F (33.5°C).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's torrid 98.1°F (36.7°C) to a tropical 92.3°F (33.5°C). An average low-temperature of 74.3°F (23.5°C) is recorded in the month of September in New River.Humidity
In New River, the average relative humidity in September is 32%.Rainfall
In New River, in September, during 7.9 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, in New River, there are 65.9 rainfall days, and 9.96" (253mm) of precipitation is accumulated.Snowfall
The only month with snowfall in New River is September. The month with the most snowfall in New River, Arizona, is September, when snow falls for 0.1 days and typically aggregates up to 0.04" (1mm) of snow.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:02 am and sunset at 6:53 pm. On the last day of September, in New River, sunrise is at 6:22 am and sunset at 6:13 pm MST.
Sunshine
In September, the average sunshine in New River is 9.6h.UV index
The average daily maximum UV index in September in New River is 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 7 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
New River, AZ
- Average high temperature in September: 92.3°F
The warmest month (with the highest average high temperature) is July (99.1°F).
The month with the lowest average high temperature is December (59.9°F).
- Average low temperature in September: 74.3°F
The month with the highest average low temperature is August (80.2°F).
The coldest months (with the lowest average low temperature) are January and December (44.1°F).
Average pressure in September
New River, AZ
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
New River, AZ
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are April and May (6.7mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity in September
New River, AZ
- Average humidity in September: 32%
The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (17%).
Average rainfall in September
New River, AZ
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
New River, AZ
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is July (12.3 days).
The month with the least rainy days is June (1.9 days).
Average snowfall in September
New River, AZ
- Average snowfall in September: 0.04"
The month with the highest snowfall is September (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in September
New River, AZ
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
New River, AZ
- Average daylight in September: 12h and 24min
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: 9h and 36min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in September
New River, AZ
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is May (28 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
New River, AZ
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in September
New River, AZ
- Average cloud cover in September: 11
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in September
New River, 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).





