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 suggests a modest reduction in the average high-temperature, shifting from 85.3°F (29.6°C) in August to a still warm 74.3°F (23.5°C). McCammon experiences a consistent, yet significant, drop from daily highs to a low-temperature of 51.1°F (10.6°C) throughout September.Humidity
In September, the average relative humidity in McCammon is 38%.Rainfall
In September, the rain falls for 7.5 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. 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. 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
In McCammon, Idaho, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:11 pm MDT.
Sunshine
The average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does McCammon have in September?
What is the UV index intensity in September?
Average temperature in September
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, ID
- Average daylight in September: 12h and 3min
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 5min
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
McCammon, 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
McCammon, 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
McCammon, 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
McCammon, 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).
McCammon, Idaho, USA
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