September weather forecastShoshone, ID
September
Weather in September
The first month of the autumn, September, is still a warm month in Shoshone, Idaho, with an average temperature ranging between min 54°F (12.2°C) and max 77.2°F (25.1°C).Temperature
The shift to September brings a decrease in the average high-temperature, falling from a hot 88.2°F (31.2°C) in August to a moderately hot 77.2°F (25.1°C). Significant variation from daytime temperatures marks September in Shoshone, with the month recording a nightly average of 54°F (12.2°C).Humidity
The average relative humidity in September is 35%.Rainfall
In Shoshone, during September, the rain falls for 5.9 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Shoshone, during the entire year, the rain falls for 86.9 days and collects up to 8.98" (228mm) of precipitation.Snowfall
In Shoshone, snow does not fall in May through September.Daylight
In Shoshone, Idaho, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:19 pm MDT.
Sunshine
In Shoshone, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index in Shoshone is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shoshone, ID
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (32.9°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in September
Shoshone, ID
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Shoshone, ID
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Shoshone, ID
- Average humidity in September: 35%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in September
Shoshone, ID
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Shoshone, ID
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Shoshone, ID
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Shoshone, ID
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Shoshone, ID
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Shoshone, ID
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in September
Shoshone, ID
- 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 January, February, November and December (UV index 2).
Average cloud cover in September
Shoshone, ID
- Average cloud cover in September: 13
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Shoshone, ID
- 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).
