September weather forecastPark City, MT
September
Weather in September
The first month of the autumn, September, is still a warm month in Park City, Montana, with an average temperature varying between 73.4°F (23°C) and 52°F (11.1°C).Temperature
The commencement of September indicates a shift in the average high-temperature, receding from August's 83.1°F (28.4°C) to a still moderately hot 73.4°F (23°C). The average temperature during September nights in Park City is registered at a fresh 52°F (11.1°C).Humidity
In Park City, Montana, the average relative humidity in September is 44%.Rainfall
In Park City, Montana, in September, during 7.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Park City, during the entire year, the rain falls for 95.8 days and collects up to 8.74" (222mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Park City. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Park City, Montana, during the entire year, snow falls for 44.1 days and aggregates up to 15.75" (400mm) of snow.Daylight
The average length of the day in September in Park City is 12h and 31min.On the first day of September, sunrise is at 6:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:57 pm MDT.
Sunshine
In September, the average sunshine in Park City is 10.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Take precautions - Protection against sun damage is advised. To guard against the harmful effects of the Sun, minimize exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Park City, MT
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).
Average pressure in September
Park City, MT
- Average pressure in September: 29.95"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Park City, MT
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Park City, MT
- Average humidity in September: 44%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Park City, MT
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is January (0.28").
Average rainfall days in September
Park City, MT
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Park City, MT
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Park City, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Park City, MT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Park City, MT
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in September
Park City, MT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Park City, MT
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in September
Park City, 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).
