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
A shift in the average high-temperature occurs in September, reducing from a pleasant 71.2°F (21.8°C) in August to a refreshing 61.7°F (16.5°C). Cliff Lake demonstrates a significant disparity from daytime highs throughout the month of September, with an average nighttime temperature of 37.6°F (3.1°C).Humidity
In Cliff Lake, the average relative humidity in September is 58%.Rainfall
In Cliff Lake, Montana, in September, during 10.5 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 123.8 rainfall days, and 24.53" (623mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through July, September through December. September is the first month it typically snows in Cliff Lake. Throughout September, in the average 1.9 snowfall days, it receives 2.36" (60mm) of snow. In Cliff Lake, during the entire year, snow falls for 165.6 days and aggregates up to 125.16" (3179mm) of snow.Daylight
The average length of the day in September in Cliff Lake is 12h and 30min.On the first day of September, sunrise is at 6:49 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:07 pm MDT.
Sunshine
The average sunshine in September is 9.8h.UV index
The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during September, leads to the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the temperature in September in Cliff Lake?
What is the average humidity in September in Cliff Lake?
How many days does it rain in September in Cliff Lake?
When does it start to snow in Cliff Lake?
What is the average length of the day in September in Cliff Lake?
When is the sunrise / sunset in September in Cliff Lake?
How long on average sun shines in September in Cliff Lake?
What is the UV index intensity in September in Cliff Lake?
Average temperature in September
Cliff Lake, MT
- Average high temperature in September: 61.7°F
The warmest month (with the highest average high temperature) is July (73.2°F).
The month with the lowest average high temperature is December (20.5°F).
- Average low temperature in September: 37.6°F
The month with the highest average low temperature is August (43°F).
The coldest month (with the lowest average low temperature) is December (4.8°F).
Average pressure in September
Cliff Lake, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Cliff Lake, MT
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are January, February, March, June, November and December (6.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Cliff Lake, MT
- Average humidity in September: 58%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Cliff Lake, MT
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in September
Cliff Lake, MT
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is January (4 days).
Average snowfall in September
Cliff Lake, MT
- Average snowfall in September: 2.36"
The month with the highest snowfall is February (20.67").
The month with the least snowfall is August (0").
Average snowfall days in September
Cliff Lake, MT
- Average snowfall days in September: 1.9 days
The month with the highest number of snowfall days is March (26.4 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Cliff Lake, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in September
Cliff Lake, MT
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is May (3.8 days).
Average UV index in September
Cliff Lake, MT
- Average UV index in September: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Cliff Lake, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Cliff Lake, MT
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Cliff Lake, Montana, USA
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