September weather forecastGrasshopper, AZ
September
Weather in September
The first month of the autumn, September, is still a warm month in Grasshopper, Arizona, with an average temperature varying between 78.3°F (25.7°C) and 56.1°F (13.4°C).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 83.7°F (28.7°C) to a still warm 78.3°F (25.7°C). Grasshopper's nights during September are marked by a pronounced drop from daytime temperatures, experiencing an average low of 56.1°F (13.4°C).Humidity
The average relative humidity in September is 44%.Rainfall
In Grasshopper, Arizona, in September, it is raining for 7.6 days, with typically 0.59" (15mm) of accumulated precipitation. In Grasshopper, during the entire year, the rain falls for 65.2 days and collects up to 8.46" (215mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 5:56 am and sunset at 6:47 pm. On the last day of September, sunrise is at 6:16 am and sunset at 6:07 pm MST.
Sunshine
In September, the average sunshine is 10.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grasshopper, AZ
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is June (84.7°F).
The month with the lowest average high temperature is January (46°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in September
Grasshopper, AZ
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Grasshopper, AZ
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Grasshopper, AZ
- Average humidity in September: 44%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (24%).
Average rainfall in September
Grasshopper, AZ
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.73").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Grasshopper, AZ
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is June (2.3 days).
Average snowfall in September
Grasshopper, AZ
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.17").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Grasshopper, AZ
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Grasshopper, 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: 10h and 24min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in September
Grasshopper, AZ
- Average sunshine days in September: 20.3 days
The months with the most sunshine days are May and June (26.9 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in September
Grasshopper, AZ
- 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, November and December (UV index 2).
Average cloud cover in September
Grasshopper, AZ
- Average cloud cover in September: 12
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 8).
Average visibility in September
Grasshopper, 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).
