September weather forecastPiedmont, WY
September
Weather in September
September, the first month of the autumn in Piedmont, is also an agreeable month, with an average temperature ranging between max 69.3°F (20.7°C) and min 48.4°F (9.1°C).Temperature
Piedmont's September weather shows a modest shift in high-temperatures, falling from August's warm 77.7°F (25.4°C) to a pleasant 69.3°F (20.7°C). The average temperature drops to a chilly 48.4°F (9.1°C) during the night in the month of September.Humidity
In September, the average relative humidity is 38%.Rainfall
In September, the rain falls for 6.5 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In Piedmont, Wyoming, during the entire year, the rain falls for 78.2 days and collects up to 7.48" (190mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Piedmont. Throughout September, in the average 0.7 snowfall days, it receives 0.51" (13mm) of snow. In Piedmont, during the entire year, snow falls for 58.7 days and aggregates up to 24.72" (628mm) of snow.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:05 pm MDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 4 during September translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Piedmont, WY
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is July (55.9°F).
The coldest months (with the lowest average low temperature) are January and December (12°F).
Average pressure in September
Piedmont, WY
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Piedmont, WY
- Average wind speed in September: 9.2mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Piedmont, WY
- Average humidity in September: 38%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall in September
Piedmont, WY
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.18").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Piedmont, WY
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is November (3.5 days).
Average snowfall in September
Piedmont, WY
- Average snowfall in September: 0.51"
The month with the highest snowfall is March (5.04").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Piedmont, WY
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Piedmont, WY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Piedmont, WY
- Average sunshine days in September: 19.3 days
The months with the most sunshine days are January and October (22.3 days).
The month with the least sunshine days is July (15.9 days).
Average UV index in September
Piedmont, WY
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Piedmont, WY
- Average cloud cover in September: 13
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Piedmont, WY
- 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).
