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
September shows a mild decline in the average high-temperature, falling from August's moderately hot 83.3°F (28.5°C) to a pleasant 73°F (22.8°C). In Bloomfield, September's nights observe an average temperature dip to a fresh 54.5°F (12.5°C).Humidity
In September, the average relative humidity is 46%.Rainfall
In Bloomfield, Montana, in September, during 8.3 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Bloomfield, during the entire year, the rain falls for 102.6 days and collects up to 13.35" (339mm) of precipitation.Snowfall
In Bloomfield, Montana, snow does not fall in June through September.Daylight
In Bloomfield, the average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 6:19 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:40 pm MDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
In Bloomfield, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Bloomfield in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Bloomfield have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Bloomfield have in September?
What is the UV index reading in September?
Average temperature in September
Bloomfield, MT
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Bloomfield, MT
- Average pressure in September: 29.92"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
Bloomfield, 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 August (9.3mph).
Average humidity in September
Bloomfield, MT
- Average humidity in September: 46%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Bloomfield, MT
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Bloomfield, MT
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Bloomfield, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bloomfield, MT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bloomfield, MT
- Average daylight in September: 12h and 3min
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: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Bloomfield, MT
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Bloomfield, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Bloomfield, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Bloomfield, 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).
Bloomfield, Montana, USA
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