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
Onset of September comes with a temperature decline, the average high falling from a pleasant 69.6°F (20.9°C) in August to a mild 59.9°F (15.5°C). A significant drop from the day's peak to an average low-temperature of 36.1°F (2.3°C) is noted during the nights in September.Humidity
In September, the average relative humidity in Bannock Ford is 57%.Rainfall
In Bannock Ford, during September, the rain falls for 9 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 102.8 rainfall days, and 23.98" (609mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall in Bannock Ford. In Bannock Ford, in September, during 4.5 snowfall days, 5.55" (141mm) of snow is typically accumulated. Throughout the year, there are 186.1 snowfall days, and 135.16" (3433mm) of snow is accumulated.Daylight
In Bannock Ford, the average length of the day in September is 12h and 31min.On the first day of September in Bannock Ford, sunrise is at 6:44 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:03 pm MDT.
Sunshine
In Bannock Ford, the average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In September, a regular UV index of 2 translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
How much does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September in Bannock Ford?
How many hours of sunshine does Bannock Ford have in September?
How high is the UV index in September?
Average temperature in September
Bannock Ford, WY
- Average high temperature in September: 59.9°F
The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (18.9°F).
- Average low temperature in September: 36.1°F
The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is December (2.5°F).
Average pressure in September
Bannock Ford, WY
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Bannock Ford, WY
- Average wind speed in September: 6.5mph
The windiest months (with the highest average wind speed) are February and June (7.3mph).
The calmest month (with the lowest average wind speed) is May (6mph).
Average humidity in September
Bannock Ford, WY
- Average humidity in September: 57%
The months with the highest relative humidity are February and March (93%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in September
Bannock Ford, WY
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is July (1.02").
Average rainfall days in September
Bannock Ford, WY
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in September
Bannock Ford, WY
- Average snowfall in September: 5.55"
The month with the highest snowfall is April (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in September
Bannock Ford, WY
- Average snowfall days in September: 4.5 days
The month with the highest number of snowfall days is March (25.6 days).
The month with the least snowfall days is July (0.4 days).
Average daylight in September /
Average sunshine in September
Bannock Ford, WY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Bannock Ford, WY
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is May (3.1 days).
Average UV index in September
Bannock Ford, WY
- Average UV index in September: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Bannock Ford, WY
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Bannock Ford, WY
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is February (3mi).
Bannock Ford, Wyoming, USA
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