September weather forecastLa Grange, WY
September
Weather in September
September, the first month of the autumn in La Grange, is still a warm month, with an average temperature varying between 53.4°F (11.9°C) and 78.4°F (25.8°C).Temperature
As September commences, the average high-temperature subtly reduces, transitioning from a hot 86.5°F (30.3°C) in August to a warm 78.4°F (25.8°C). A noteworthy temperature dip to a fresh 53.4°F (11.9°C) is observed during the nights of September in La Grange.Humidity
The months with the lowest humidity in La Grange are August and September, with an average relative humidity of 46%.Rainfall
In La Grange, in September, during 7.9 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 104.8 rainfall days, and 13.35" (339mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In La Grange, during the entire year, snow falls for 39 days and aggregates up to 17.17" (436mm) of snow.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:23 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:39 pm MDT.
Sunshine
In September, the average sunshine is 10.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Grange, WY
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in September
La Grange, WY
- Average pressure in September: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
La Grange, WY
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
La Grange, WY
- Average humidity in September: 46%
The month with the highest relative humidity is January (68%).
The months with the lowest relative humidity are August and September (46%).
Average rainfall in September
La Grange, WY
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
La Grange, WY
- Average rainfall days in September: 7.9 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
La Grange, WY
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
La Grange, WY
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
La Grange, 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 36min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
La Grange, WY
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
La Grange, WY
- Average UV index in September: 4
The months with the highest UV index are 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
La Grange, WY
- Average cloud cover in September: 17
The months with the most cloud cover are February and April (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
La Grange, 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).
