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
The shift to September brings a decrease in the average high-temperature, falling from a warm 81.9°F (27.7°C) in August to an agreeable 70.9°F (21.6°C). Radersburg registers a prominent dip from daytime highs, with an average of 44.4°F (6.9°C) during the nights of September.Humidity
The average relative humidity in September is 49%.Rainfall
In Radersburg, during September, the rain falls for 8.4 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Radersburg, during the entire year, the rain falls for 134.2 days and collects up to 11.34" (288mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows in Radersburg. Throughout September, in the average 0.5 snowfall days, it receives 0.83" (21mm) of snow. In Radersburg, during the entire year, snow falls for 79.6 days and aggregates up to 30.08" (764mm) of snow.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:48 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:07 pm MDT.
Sunshine
The average sunshine in September in Radersburg is 10h.UV index
In Radersburg, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What are the temperatures in Radersburg in September?
What is the average humidity in September in Radersburg?
How many days does it rain in September in Radersburg?
When does it start snowing in Radersburg?
What is the average length of the day in September in Radersburg?
What time are sunrise and sunset in September in Radersburg?
How long on average sun shines in September in Radersburg?
What is the UV index reading in September in Radersburg?
Average temperature in September
Radersburg, MT
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in September: 44.4°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).
Average pressure in September
Radersburg, 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 (29.9"Hg).
Average wind speed in September
Radersburg, MT
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Radersburg, MT
- Average humidity in September: 49%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).
Average rainfall in September
Radersburg, MT
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in September
Radersburg, MT
- Average rainfall days in September: 8.4 days
The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in September
Radersburg, MT
- Average snowfall in September: 0.83"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Radersburg, MT
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Radersburg, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- 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 January (Average sunshine: 5h and 54min).
Average sunshine days in September
Radersburg, MT
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in September
Radersburg, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Radersburg, MT
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Radersburg, MT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Radersburg, Montana, USA
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