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
As August makes way for September, Elma's average high-temperature eases from a warm 75.7°F (24.3°C) to an agreeable 69.6°F (20.9°C). Throughout the month of September, Elma observes a dramatic downturn from the daytime peak temperatures, expecting an average low of 46.8°F (8.2°C).Humidity
The average relative humidity in September is 81%.Rainfall
In Elma, during September, the rain falls for 11.1 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 163.5 rainfall days, and 26.65" (677mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September, sunrise is at 6:34 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:54 pm PDT.
Sunshine
In Elma, the average sunshine in September is 7.8h.UV index
In Elma, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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 in Elma?
How many days does it rain in September?
When it does not snow in Elma?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Elma, WA
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (43°F).
- Average low temperature in September: 46.8°F
The month with the highest average low temperature is August (49.5°F).
The coldest months (with the lowest average low temperature) are February and December (33.6°F).
Average pressure in September
Elma, WA
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and July (30.07"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in September
Elma, WA
- Average wind speed in September: 3.7mph
The windiest months (with the highest average wind speed) are January and June (4.9mph).
The calmest month (with the lowest average wind speed) is September (3.7mph).
Average humidity in September
Elma, WA
- Average humidity in September: 81%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Elma, WA
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is January (4.37").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Elma, WA
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in September
Elma, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Elma, 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 April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Elma, WA
- Average daylight in September: 12h and 3min
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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Elma, WA
- Average sunshine days in September: 17 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (9.3 days).
Average UV index in September
Elma, WA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Elma, WA
- Average cloud cover in September: 52
The months with the most cloud cover are January and December (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Elma, WA
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September and October (4mi).
The months with the lowest visibility are November and December (3mi).
Elma, Washington, USA
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