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
The start of September signals a decrease in the average high-temperature, transitioning from a warm 80.2°F (26.8°C) in August to a pleasant 69.6°F (20.9°C). During September nights, Santa documents a marked contrast from daily highs, with an average temperature of 43°F (6.1°C).Humidity
The average relative humidity in September is 61%.Rainfall
In Santa, in September, during 7.2 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Santa, during the entire year, the rain falls for 118.6 days and collects up to 16.89" (429mm) of precipitation.Snowfall
Months with snowfall in Santa are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Santa, during the entire year, snow falls for 60.4 days and aggregates up to 44.53" (1131mm) of snow.Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:06 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:26 pm PDT.
Sunshine
In September, the average sunshine is 9.7h.UV index
In Santa, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. 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?
When does it start snowing?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Santa?
What is the UV index intensity in September?
Average temperature in September
Santa, ID
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (31.5°F).
- Average low temperature in September: 43°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (20.8°F).
Average pressure in September
Santa, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Santa, ID
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.9mph).
Average humidity in September
Santa, ID
- Average humidity in September: 61%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Santa, ID
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Santa, ID
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is April (14.4 days).
The month with the least rainy days is July (5.4 days).
Average snowfall in September
Santa, ID
- Average snowfall in September: 0.08"
The month with the highest snowfall is January (11.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Santa, ID
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Santa, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 30min).
Average sunshine days in September
Santa, ID
- Average sunshine days in September: 21.2 days
The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is February (10.1 days).
Average UV index in September
Santa, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Santa, ID
- Average cloud cover in September: 24
The months with the most cloud cover are January, February and December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Santa, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January and February (3mi).
Santa, Idaho, USA
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