Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In Lonetree, the average high-temperature in September gently drops from a pleasant 73°F (22.8°C) in August to a refreshing 65.5°F (18.6°C). Lonetree's temperature drops to an average low of 45.5°F (7.5°C) during the nights of September.Humidity
In Lonetree, the average relative humidity in September is 42%.Rainfall
In September, the rain falls for 10.5 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Lonetree, during the entire year, the rain falls for 93.9 days and collects up to 14.17" (360mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Lonetree. September is the first month it typically snows. Throughout September, in the average 0.9 snowfall days, it receives 0.67" (17mm) of snow. In Lonetree, during the entire year, snow falls for 84.4 days and aggregates up to 56.22" (1428mm) of snow.Daylight
In Lonetree, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:48 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:03 pm MDT.
Sunshine
The average sunshine in September in Lonetree is 10.5h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 in September translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What are the temperatures in Lonetree in September?
What is the average humidity in September in Lonetree?
How much does it rain in Lonetree in September?
When does it start to snow in Lonetree?
What is the average length of the day in September in Lonetree?
When are sunrise and sunset in September in Lonetree?
How many hours of sunshine does Lonetree have in September?
What is the UV index intensity in September in Lonetree?
Average temperature in September
Lonetree, WY
- Average high temperature in September: 65.5°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in September: 45.5°F
The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is December (12.2°F).
Average pressure in September
Lonetree, WY
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Lonetree, WY
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Lonetree, WY
- Average humidity in September: 42%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in September
Lonetree, WY
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Lonetree, WY
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is November (3 days).
Average snowfall in September
Lonetree, WY
- Average snowfall in September: 0.67"
The month with the highest snowfall is March (9.57").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Lonetree, WY
- Average snowfall days in September: 0.9 days
The month with the highest number of snowfall days is February (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Lonetree, WY
- Average daylight in September: 12h and 3min
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 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Lonetree, WY
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in September
Lonetree, 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
Lonetree, WY
- Average cloud cover in September: 15
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in September
Lonetree, WY
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Lonetree, Wyoming, USA
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