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
With the arrival of September, Billings notices a mild change in the average high-temperature, sliding from August's chilly 6.8°C (44.2°F) to a wintry 3.5°C (38.3°F). With a barely noticeable fluctuation in temperature, Billings reaches an average low of 0.2°C (32.4°F) during the September nights.Humidity
In Billings, the average relative humidity in September is 86%.Rainfall
September is the month with the most rainfall. Rain falls for 9.3 days and accumulates 44mm (1.73") of precipitation.Snowfall
January through December are months with snowfall in Billings, Russia. In Billings, Russia, during September, snow falls for 9.8 days and regularly aggregates up to 157mm (6.18") of snow. In Billings, during the entire year, snow falls for 149.5 days and aggregates up to 1236mm (48.66") of snow.Daylight
The average length of the day in September is 13h and 25min.On the first day of September in Billings, Russia, sunrise is at 04:33 and sunset at 19:59. On the last day of the month, sunrise is at 06:28 and sunset at 17:44 +12.
Sunshine
In Billings, the average sunshine in September is 4.2h.UV index
January through April, September through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during September translates into these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is September in Billings?
What is the average humidity in September in Billings?
What is the wettest month in Billings?
How much does it rain in Billings in September?
How many days does it snow in September in Billings?
How many hours of daylight does Billings have in September?
When is the sunrise / sunset in September in Billings?
How many hours of sunshine does Billings have in September?
What are the months with the lowest UV index in Billings?
What is the UV index reading in September in Billings?
Average temperature in September
Billings, Russia
- Average high temperature in September: 3.5°C
The warmest month (with the highest average high temperature) is July (8.5°C).
The month with the lowest average high temperature is February (-22.8°C).
- Average low temperature in September: 0.2°C
The month with the highest average low temperature is July (2.8°C).
The coldest month (with the lowest average low temperature) is February (-28.5°C).
Average pressure in September
Billings, Russia
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is July (1009.4mbar).
Average wind speed in September
Billings, Russia
- Average wind speed in September: 15.5km/h
The windiest month (with the highest average wind speed) is September (15.5km/h).
The calmest months (with the lowest average wind speed) are April and May (11.2km/h).
Average humidity in September
Billings, Russia
- Average humidity in September: 86%
The month with the highest relative humidity is February (96%).
The month with the lowest relative humidity is June (76%).
Average rainfall in September
Billings, Russia
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is September (44mm).
The driest month (with the least rainfall) is April (9mm).
Average rainfall days in September
Billings, Russia
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is August (13.8 days).
The months with the least rainy days are January and February (0.5 days).
Average snowfall in September
Billings, Russia
- Average snowfall in September: 157mm
The month with the highest snowfall is October (215mm).
The month with the least snowfall is June (30mm).
Average snowfall days in September
Billings, Russia
- Average snowfall days in September: 9.8 days
The month with the highest number of snowfall days is November (19.4 days).
The month with the least snowfall days is July (2.1 days).
Average daylight in September /
Average sunshine in September
Billings, Russia
- Average daylight in September: 13h and 2min
The month with the longest days is August (Average daylight: 18h and 12min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).
- Average sunshine in September: 4h and 1min
The month with the most sunshine is August (Average sunshine: 6h and 36min).
The month with the least sunshine is December (Average sunshine: 0h and 12min).
Average sunshine days in September
Billings, Russia
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is October (9.3 days).
Average UV index in September
Billings, Russia
- Average UV index in September: 1
The months with the highest UV index are May, June, July and August (UV index 2).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 1).
Average cloud cover in September
Billings, Russia
- Average cloud cover in September: 72
The month with the most cloud cover is February (Cloud cover 82).
The month with the least cloud cover is June (Cloud cover 44).
Average visibility in September
Billings, Russia
- Average visibility in September: 8km
The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, February, March and December (6km).
Billings, Russia
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