September weather forecastLa Center, WA
September
Weather in September
September, the first month of the autumn in La Center, is still a pleasant month, with an average temperature ranging between max 71.2°F (21.8°C) and min 48.6°F (9.2°C).Temperature
As August makes way for September, La Center's average high-temperature eases from a moderately hot 79.2°F (26.2°C) to a pleasant 71.2°F (21.8°C). La Center registers a prominent dip from daytime highs, with an average of 48.6°F (9.2°C) during the nights of September.Humidity
The average relative humidity in September in La Center is 74%.Rainfall
In September, the rain falls for 10.8 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. In La Center, Washington, during the entire year, the rain falls for 180.9 days and collects up to 39.41" (1001mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Around midday, solar radiation is most harmful; hence, exposure should be limited. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Center, WA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in September
La Center, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
La Center, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity in September
La Center, WA
- Average humidity in September: 74%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in September
La Center, WA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is December (5.71").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
La Center, WA
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is March (21.3 days).
The month with the least rainy days is July (5.3 days).
Average snowfall in September
La Center, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
La Center, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
La Center, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
La Center, WA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (23.5 days).
The months with the least sunshine days are February and March (8.3 days).
Average UV index in September
La Center, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
La Center, WA
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
La Center, WA
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
