September weather forecastLysite, WY
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Lysite, Wyoming, with an average temperature fluctuating between 72.9°F (22.7°C) and 52.3°F (11.3°C).Temperature
Lysite's progression into September involves a drop in the average high-temperature, receding from a moderately hot 82.6°F (28.1°C) in August to a pleasant 72.9°F (22.7°C). Lysite, during the nights of September, experiences an average temperature drop to a fresh 52.3°F (11.3°C).Humidity
The average relative humidity in September is 37%.Rainfall
In September, the rain falls for 10.9 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 115.8 rainfall days, and 11.18" (284mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:53 pm MDT.
Sunshine
In Lysite, the average sunshine in September is 10.8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Consider carefully! The reflective quality of snow 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
Lysite, WY
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Lysite, WY
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Lysite, WY
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is January (5.4mph).
Average humidity in September
Lysite, WY
- Average humidity in September: 37%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in September
Lysite, WY
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Lysite, WY
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Lysite, WY
- Average snowfall in September: 0"
The month with the highest snowfall is April (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lysite, WY
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (9.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Lysite, 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 0min).
- Average sunshine in September: 10h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).
Average sunshine days in September
Lysite, WY
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in September
Lysite, 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, November and December (UV index 2).
Average cloud cover in September
Lysite, WY
- Average cloud cover in September: 15
The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Lysite, 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).
