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 Big Sky Colonial Manor, entering September brings a temperature decrement, reducing from August's warm 76.8°F (24.9°C) to a comfortable 65.5°F (18.6°C). During September, Big Sky Colonial Manor perceives a consistent contrast from the daytime highs, with an average low-temperature of 39.2°F (4°C).Humidity
In September, the average relative humidity is 64%.Rainfall
In Big Sky Colonial Manor, in September, during 8.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 126.4 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Big Sky Colonial Manor. Throughout September, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Big Sky Colonial Manor, during the entire year, snow falls for 97 days and aggregates up to 33.86" (860mm) of snow.Daylight
The average length of the day in September in Big Sky Colonial Manor is 12h and 34min.On the first day of September, sunrise is at 6:55 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:17 pm MDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
The average daily maximum UV index in September in Big Sky Colonial Manor, Montana, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Be vigilant - Preventing sunburn is recommended. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Big Sky Colonial Manor in September?
What is the average humidity in September in Big Sky Colonial Manor?
How many days does it rain in September in Big Sky Colonial Manor?
When does it start to snow in Big Sky Colonial Manor?
What is the average length of the day in September in Big Sky Colonial Manor?
When are sunrise and sunset in September in Big Sky Colonial Manor?
How long on average sun shines in September in Big Sky Colonial Manor?
What is the UV index reading in September in Big Sky Colonial Manor?
Average temperature in September
Big Sky Colonial Manor, MT
- Average high temperature in September: 65.5°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 39.2°F
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in September
Big Sky Colonial Manor, MT
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Big Sky Colonial Manor, MT
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity in September
Big Sky Colonial Manor, MT
- Average humidity in September: 64%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall in September
Big Sky Colonial Manor, MT
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days in September
Big Sky Colonial Manor, MT
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Big Sky Colonial Manor, MT
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Big Sky Colonial Manor, MT
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Big Sky Colonial Manor, MT
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Big Sky Colonial Manor, MT
- Average sunshine days in September: 19 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index in September
Big Sky Colonial Manor, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Big Sky Colonial Manor, MT
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Big Sky Colonial Manor, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Big Sky Colonial Manor, Montana, USA
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