September weather forecastBredette, MT
September
Weather in September
September, the first month of the autumn in Bredette, is still a pleasant month, with an average temperature varying between 54.3°F (12.4°C) and 71.6°F (22°C).Temperature
The commencement of September involves a temperature shift, with the average high-temperature dropping from a warm 82.9°F (28.3°C) in August to an agreeable 71.6°F (22°C). An average nighttime temperature of 54.3°F (12.4°C) is witnessed throughout September.Humidity
In September, the average relative humidity is 46%.Rainfall
In Bredette, in September, it is raining for 8 days, with typically 1.5" (38mm) of accumulated precipitation. In Bredette, during the entire year, the rain falls for 95.7 days and collects up to 11.69" (297mm) of precipitation.Snowfall
In Bredette, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 34min.On the first day of September in Bredette, Montana, sunrise is at 6:19 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:41 pm MDT.
Sunshine
In September, the average sunshine in Bredette is 10.1h.UV index
The average daily maximum UV index in September in Bredette is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Undertake protective steps - Preventing sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bredette, MT
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is February (23°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest months (with the lowest average low temperature) are January and February (10.2°F).
Average pressure in September
Bredette, MT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Bredette, MT
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in September
Bredette, MT
- Average humidity in September: 46%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Bredette, MT
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Bredette, MT
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is May (13.1 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Bredette, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bredette, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (13.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Bredette, MT
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 10h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Bredette, MT
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is April (13.8 days).
Average UV index in September
Bredette, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Bredette, MT
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in September
Bredette, 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).
