September weather forecastChubbuck, ID
September
Weather in September
September marks the transition from summer heat to autumn chill in Chubbuck. In comparison to August, the temperatures start to slide, especially towards the evening and night. The pleasant temperature and abundant sunshine make sightseeing and outdoor activities attractive. September brings with it the nascent hints of fall as leaves start to change color. Though the days get shorter, with daytime temperature highs reaching 74.3°F (23.5°C) and lows dropping to 51.1°F (10.6°C), they remain agreeable.Temperature
The shift from August to September corresponds with a decrease in the average high-temperature, down to a still warm 74.3°F (23.5°C) from a moderately hot 85.3°F (29.6°C). Chubbuck registers a significant drop in temperature in September, with average nighttime lows of 51.1°F (10.6°C).Humidity
In Chubbuck, the average relative humidity in September is 38%.Rainfall
In Chubbuck, during September, the rain falls for 7.5 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 116.1 rainfall days, and 11.26" (286mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Chubbuck, Idaho. Throughout September, in the average 0.1 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, there are 70.2 snowfall days, and 31.61" (803mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:55 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:12 pm MDT.
Sunshine
In September, the average sunshine is 9.9h.UV index
In Chubbuck, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chubbuck, ID
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is August (57.4°F).
The coldest months (with the lowest average low temperature) are January and December (17.8°F).
Average pressure in September
Chubbuck, ID
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Chubbuck, ID
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is January (6.9mph).
Average humidity in September
Chubbuck, ID
- Average humidity in September: 38%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (33%).
Average rainfall in September
Chubbuck, ID
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Chubbuck, ID
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is July (6.3 days).
Average snowfall in September
Chubbuck, ID
- Average snowfall in September: 0.35"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Chubbuck, ID
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (15.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Chubbuck, 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 54min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).
Average sunshine days in September
Chubbuck, ID
- Average sunshine days in September: 19.6 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in September
Chubbuck, ID
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Chubbuck, ID
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Chubbuck, ID
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
