September weather forecastBlack Falls Crossing, AZ
September
Weather in September
The first month of the autumn, September, is still a warm month in Black Falls Crossing, Arizona, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 75°F (23.9°C).Temperature
The onset of September brings with it an average high-temperature of a still warm 75°F (23.9°C), showing a negligible variation from the month before. The nights of September anticipate an average low-temperature of 54°F (12.2°C).Humidity
In September, the average relative humidity is 42%.Rainfall
In Black Falls Crossing, during September, the rain falls for 7.9 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Black Falls Crossing, Arizona, during the entire year, the rain falls for 60.2 days and collects up to 10" (254mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Black Falls Crossing, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:51 pm. On the last day of September, in Black Falls Crossing, sunrise is at 7:19 am and sunset at 7:09 pm MDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
The average daily maximum UV index in September in Black Falls Crossing is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Black Falls Crossing, AZ
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).
Average pressure in September
Black Falls Crossing, AZ
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Black Falls Crossing, AZ
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Black Falls Crossing, AZ
- Average humidity in September: 42%
The month with the highest relative humidity is January (66%).
The month with the lowest relative humidity is June (23%).
Average rainfall in September
Black Falls Crossing, AZ
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Black Falls Crossing, AZ
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is November (1.1 days).
Average snowfall in September
Black Falls Crossing, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Black Falls Crossing, AZ
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Black Falls Crossing, AZ
- 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: 9h and 48min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Black Falls Crossing, AZ
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is November (26.9 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Black Falls Crossing, 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
Black Falls Crossing, AZ
- Average cloud cover in September: 11
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in September
Black Falls Crossing, 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).





