September weather forecastParadise, MT
September
Weather in September
September, the first month of the autumn in Paradise, is still a pleasant month, with an average temperature fluctuating between 42.3°F (5.7°C) and 68.5°F (20.3°C).Temperature
The onset of September introduces a moderate change in Paradise's weather, with average high-temperatures falling from August's warm 79.3°F (26.3°C) to an agreeable 68.5°F (20.3°C). During September, Paradise perceives a consistent contrast from the daytime highs, with an average low-temperature of 42.3°F (5.7°C).Humidity
The average relative humidity in September is 58%.Rainfall
In Paradise, during September, the rain falls for 9.3 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Paradise, during the entire year, the rain falls for 129.9 days and collects up to 13.5" (343mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Paradise. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, there are 67.1 snowfall days, and 28.27" (718mm) of snow is accumulated.Daylight
In Paradise, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:18 pm. On the last day of September, sunrise is at 7:37 am and sunset at 7:19 pm MDT.
Sunshine
The average sunshine in September in Paradise is 9.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Boost your sun resistance with garments that are densely woven yet spacious. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Paradise, MT
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in September: 42.3°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure in September
Paradise, MT
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Paradise, MT
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).
Average humidity in September
Paradise, MT
- Average humidity in September: 58%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Paradise, MT
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in September
Paradise, MT
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).
Average snowfall in September
Paradise, MT
- Average snowfall in September: 0.47"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Paradise, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Paradise, MT
- Average daylight in September: 12h and 30min
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: 9h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Paradise, MT
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (11 days).
Average UV index in September
Paradise, 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 February and December (UV index 1).
Average cloud cover in September
Paradise, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Paradise, MT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).





