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
Onset of September comes with a temperature decline, the average high falling from a warm 75.2°F (24°C) in August to a comfortable 65.7°F (18.7°C). Significant dips from daytime highs mark the September nights, with a consistent average temperature of 41.2°F (5.1°C).Humidity
In September, the average relative humidity is 55%.Rainfall
In Goldcreek, during September, the rain falls for 7.5 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 122.8 rainfall days, and 17.13" (435mm) 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 1.3 snowfall days, it receives 2.24" (57mm) of snow. In Goldcreek, during the entire year, snow falls for 125.4 days and aggregates up to 77.91" (1979mm) of snow.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:52 am and sunset at 8:10 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:12 pm MDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In Goldcreek, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Enhance your sun protection with tightly woven, yet airy clothing. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Goldcreek in September?
What is the average humidity in September?
How much 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
Goldcreek, MT
- Average high temperature in September: 65.7°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 41.2°F
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (12.6°F).
Average pressure in September
Goldcreek, MT
- Average pressure in September: 29.98"Hg
The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Goldcreek, MT
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are January, April and November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Goldcreek, MT
- Average humidity in September: 55%
The months with the highest relative humidity are January and February (88%).
The months with the lowest relative humidity are July and August (49%).
Average rainfall in September
Goldcreek, MT
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is June (2.52").
The driest month (with the least rainfall) is August (0.67").
Average rainfall days in September
Goldcreek, MT
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Goldcreek, MT
- Average snowfall in September: 2.24"
The month with the highest snowfall is February (12.76").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Goldcreek, MT
- Average snowfall days in September: 1.3 days
The month with the highest number of snowfall days is February (20.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Goldcreek, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Goldcreek, MT
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is April (6.3 days).
Average UV index in September
Goldcreek, MT
- Average UV index in September: 3
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 2).
Average cloud cover in September
Goldcreek, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Goldcreek, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Goldcreek, Montana, USA
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