September weather forecastLedger, MT
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Ledger, Montana, with an average temperature fluctuating between 50.4°F (10.2°C) and 69.3°F (20.7°C).Temperature
In Ledger, the beginning of September is marked by a lowered average high-temperature, shifting from August's warm 80.2°F (26.8°C) to an agreeable 69.3°F (20.7°C). During the month of September, Ledger's nighttime temperature lowers to an average of 50.4°F (10.2°C).Humidity
In September, the average relative humidity in Ledger is 47%.Rainfall
In Ledger, in September, it is raining for 8.5 days, with typically 0.98" (25mm) of accumulated precipitation. In Ledger, during the entire year, the rain falls for 104.3 days and collects up to 11.93" (303mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.9 snowfall days, it receives 0.67" (17mm) of snow. Throughout the year, there are 68.2 snowfall days, and 25.63" (651mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 34min.On the first day of September, sunrise is at 6:46 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:07 pm MDT.
Sunshine
In September, the average sunshine is 9.7h.UV index
In Ledger, Montana, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ledger, MT
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is December (16°F).
Average pressure in September
Ledger, MT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Ledger, MT
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Ledger, MT
- Average humidity in September: 47%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Ledger, MT
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Ledger, MT
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (4.2 days).
Average snowfall in September
Ledger, MT
- Average snowfall in September: 0.67"
The month with the highest snowfall is February (4.88").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Ledger, MT
- Average snowfall days in September: 0.9 days
The month with the highest number of snowfall days is December (12.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Ledger, MT
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Ledger, MT
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is September (19.5 days).
The month with the least sunshine days is April (12.2 days).
Average UV index in September
Ledger, 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, October, November and December (UV index 2).
Average cloud cover in September
Ledger, 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 14).
Average visibility in September
Ledger, 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).
