September weather forecastJerome, AZ
September
Weather in September
September, the first month of the autumn in Jerome, is still a warm month, with an average temperature varying between 82°F (27.8°C) and 59.7°F (15.4°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a hot 87.6°F (30.9°C) to a moderately hot 82°F (27.8°C). September in Jerome witnesses a substantial contrast between the daytime highs and the average low of 59.7°F (15.4°C).Heat index
In September, the average heat index is calculated to be 80.6°F (27°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.Observations indicate that the heat index values are for shady locations with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In Jerome, the average relative humidity in September is 40%.Rainfall
In Jerome, Arizona, in September, during 9.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Jerome, during the entire year, the rain falls for 79 days and collects up to 11.42" (290mm) of precipitation.Snowfall
January through April, September, November and December are months with snowfall in Jerome. September is the first month it typically snows in Jerome. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Jerome, Arizona, there are 10.8 snowfall days, and 12.4" (315mm) of snow is accumulated.Daylight
The average length of the day in September in Jerome is 12h and 23min.On the first day of September in Jerome, Arizona, sunrise is at 6:01 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 6:13 pm MST.
Sunshine
The average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jerome, AZ
- Average high temperature in September: 82°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (50.7°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is December (31.8°F).
Average pressure in September
Jerome, AZ
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Jerome, AZ
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are April and May (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Jerome, AZ
- Average humidity in September: 40%
The month with the highest relative humidity is December (57%).
The month with the lowest relative humidity is June (23%).
Average rainfall in September
Jerome, AZ
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Jerome, AZ
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is June (1.5 days).
Average snowfall in September
Jerome, AZ
- Average snowfall in September: 0.08"
The month with the highest snowfall is December (4.02").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Jerome, AZ
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (3.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Jerome, 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 54min).
- Average sunshine in September: 9h and 42min
The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Jerome, AZ
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is August (11.5 days).
Average UV index in September
Jerome, AZ
- Average UV index in September: 5
The month with the highest UV index is June (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Jerome, AZ
- Average cloud cover in September: 10
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
Jerome, 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).
