September weather forecastClarkia, ID
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Clarkia, Idaho, with an average temperature fluctuating between 69.6°F (20.9°C) and 43°F (6.1°C).Temperature
Clarkia's progression into September includes a drop in the average high-temperature, from a warm 80.2°F (26.8°C) in August to an agreeable 69.6°F (20.9°C). Clarkia logs a considerable temperature decrease from the daytime highs during the nights in September, with an average reading of 43°F (6.1°C).Humidity
The average relative humidity in September is 61%.Rainfall
In Clarkia, in September, it is raining for 7.2 days, with typically 0.71" (18mm) of accumulated precipitation. In Clarkia, during the entire year, the rain falls for 118.6 days and collects up to 16.89" (429mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 60.4 snowfall days, and 44.53" (1131mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:05 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:25 pm PDT.
Sunshine
In Clarkia, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 3 during September leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, ID
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 9h and 42min
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
Clarkia, 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
Clarkia, 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
Clarkia, 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
Clarkia, 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).
