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
Carlton's weather changes with the onset of September, slightly falling from a moderately hot 76.8°F (24.9°C) in August to a refreshing 65.3°F (18.5°C). In Carlton, the nighttime chill during September is a clear shift from the day's highs, with an average of 42.1°F (5.6°C).Humidity
In Carlton, the average relative humidity in September is 60%.Rainfall
In Carlton, in September, during 9.8 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, in Carlton, there are 141.4 rainfall days, and 18.07" (459mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Carlton, there are 64.4 snowfall days, and 42.6" (1082mm) of snow is accumulated.Daylight
In Carlton, the average length of the day in September is 12h and 34min.On the first day of September in Carlton, sunrise is at 6:19 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:40 pm PDT.
Sunshine
In September, the average sunshine is 10.7h.UV index
In Carlton, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Carlton?
What is the average humidity in September in Carlton?
How many days does it rain in September in Carlton?
When does it start snowing in Carlton?
What is the average length of the day in September in Carlton?
What time are sunrise and sunset in September in Carlton?
How many hours of sunshine does Carlton have in September?
What is the UV index intensity in September in Carlton?
Average temperature in September
Carlton, WA
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is August (76.8°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in September: 42.1°F
The month with the highest average low temperature is August (48.9°F).
The coldest month (with the lowest average low temperature) is December (14.7°F).
Average pressure in September
Carlton, WA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in September
Carlton, WA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is July (5.1mph).
The calmest months (with the lowest average wind speed) are January and December (3.5mph).
Average humidity in September
Carlton, WA
- Average humidity in September: 60%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in September
Carlton, WA
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is December (2.52").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Carlton, WA
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in September
Carlton, WA
- Average snowfall in September: 0.08"
The month with the highest snowfall is December (12.28").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Carlton, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (15.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Carlton, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Carlton, WA
- Average sunshine days in September: 17.6 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is March (8.9 days).
Average UV index in September
Carlton, WA
- 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 and November (UV index 1).
Average cloud cover in September
Carlton, WA
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Carlton, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Carlton, Washington, USA
Weather forecast for your location
2. Allow the app to use your location