September weather forecastThayne, WY
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Thayne, Wyoming, with an average temperature fluctuating between 65.7°F (18.7°C) and 39.7°F (4.3°C).Temperature
September brings a minor decrease, with the average high-temperature reducing from a moderately hot 74.8°F (23.8°C) in August to a refreshing 65.7°F (18.7°C). Nightly average temperatures in September reveal a significant dip from daytime highs in Thayne, Wyoming, registering a consistent an icy 39.7°F (4.3°C).Humidity
In Thayne, Wyoming, the average relative humidity in September is 52%.Rainfall
In Thayne, in September, during 9.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Thayne, during the entire year, the rain falls for 109.5 days and collects up to 21.61" (549mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows in Thayne. Throughout September, in the average 1 snowfall days, it receives 1.3" (33mm) of snow. Throughout the year, there are 126.9 snowfall days, and 106.65" (2709mm) of snow is accumulated.Daylight
In September, the average length of the day in Thayne is 12h and 29min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:21 am and sunset at 7:06 pm MDT.
Sunshine
In September, the average sunshine is 10.1h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thayne, WY
- Average high temperature in September: 65.7°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is December (24.1°F).
- Average low temperature in September: 39.7°F
The month with the highest average low temperature is July (45.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in September
Thayne, 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 (29.91"Hg).
Average wind speed in September
Thayne, WY
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).
Average humidity in September
Thayne, WY
- Average humidity in September: 52%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is August (45%).
Average rainfall in September
Thayne, WY
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is February (2.72").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in September
Thayne, WY
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Thayne, WY
- Average snowfall in September: 1.3"
The month with the highest snowfall is February (19.96").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Thayne, WY
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is December (21.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Thayne, WY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Thayne, WY
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is April (7 days).
Average UV index in September
Thayne, WY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Thayne, WY
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Thayne, WY
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
