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
Observing a mild shift, the average high-temperature during September reduces from August's moderately hot 78.1°F (25.6°C) to a refreshing 67.5°F (19.7°C). Coffee Creek registers a consistent average low-temperature of 47.1°F (8.4°C) during September.Humidity
In September, the average relative humidity in Coffee Creek is 52%.Rainfall
In September, the rain falls for 8.7 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 126.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 1.3" (33mm) of snow. Throughout the year, there are 83.4 snowfall days, and 45.51" (1156mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:01 pm MDT.
Sunshine
In September, the average sunshine is 10h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Coffee Creek in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Coffee Creek, MT
- Average high temperature in September: 67.5°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The months with the lowest average high temperature are February and December (29.1°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).
Average pressure in September
Coffee Creek, MT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Coffee Creek, MT
- Average wind speed in September: 8.5mph
The windiest months (with the highest average wind speed) are January, April and October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.4mph).
Average humidity in September
Coffee Creek, MT
- Average humidity in September: 52%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Coffee Creek, MT
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in September
Coffee Creek, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Coffee Creek, MT
- Average snowfall in September: 1.3"
The month with the highest snowfall is April (9.13").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Coffee Creek, MT
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is February (15.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Coffee Creek, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Coffee Creek, MT
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is April (8.3 days).
Average UV index in September
Coffee Creek, MT
- 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, October, November and December (UV index 2).
Average cloud cover in September
Coffee Creek, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in September
Coffee Creek, MT
- 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).
Coffee Creek, Montana, USA
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