September weather forecastHorse Creek, WY
September
Weather in September
September, the first month of the autumn in Horse Creek, is still a pleasant month, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 46.6°F (8.1°C).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from a moderately hot 75.7°F (24.3°C) to an agreeable 68.4°F (20.2°C). September nights in Horse Creek present a sharp contrast to daytime highs, with average temperatures of 46.6°F (8.1°C).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 43%.Rainfall
In Horse Creek, in September, during 9.7 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Horse Creek, during the entire year, the rain falls for 101.4 days and collects up to 14.37" (365mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Horse Creek. September is the first month it typically snows. Throughout September, in the average 1.1 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, in Horse Creek, Wyoming, there are 78.1 snowfall days, and 44.92" (1141mm) of snow is accumulated.Daylight
In Horse Creek, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:33 pm. On the last day of September, in Horse Creek, Wyoming, sunrise is at 6:57 am and sunset at 6:43 pm MDT.
Sunshine
In Horse Creek, the average sunshine in September is 10.7h.UV index
The average daily maximum UV index in September in Horse Creek, Wyoming, is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Adopt protective measures - It is advised to guard against sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. 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
Horse Creek, WY
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (28.2°F).
- Average low temperature in September: 46.6°F
The month with the highest average low temperature is July (54.1°F).
The coldest month (with the lowest average low temperature) is December (14.4°F).
Average pressure in September
Horse Creek, WY
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Horse Creek, WY
- Average wind speed in September: 10.9mph
The windiest month (with the highest average wind speed) is January (14.5mph).
The calmest month (with the lowest average wind speed) is July (9.3mph).
Average humidity in September
Horse Creek, WY
- Average humidity in September: 43%
The months with the highest relative humidity are January and February (75%).
The months with the lowest relative humidity are August and September (43%).
Average rainfall in September
Horse Creek, WY
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Horse Creek, WY
- Average rainfall days in September: 9.7 days
The months with the highest number of rainy days are May and July (15.1 days).
The months with the least rainy days are January, February and November (2.9 days).
Average snowfall in September
Horse Creek, WY
- Average snowfall in September: 0.47"
The month with the highest snowfall is April (9.76").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Horse Creek, WY
- Average snowfall days in September: 1.1 days
The month with the highest number of snowfall days is April (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Horse Creek, 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 12min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Horse Creek, WY
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is May (8.9 days).
Average UV index in September
Horse Creek, WY
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Horse Creek, WY
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is September (Cloud cover 17).
Average visibility in September
Horse Creek, 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).
