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
Welcoming September, Ephrata observes a shift in the average high-temperature, falling from August's hot 86.7°F (30.4°C) to a moderately hot 75.2°F (24°C). An average nighttime temperature of 54.1°F (12.3°C) is noted in Ephrata during the month of September.Humidity
In September, the average relative humidity in Ephrata is 45%.Rainfall
In Ephrata, in September, it is raining for 5.4 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 95.2 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Snowfall
January through April, September, November and December are months with snowfall in Ephrata. September is the first month it typically snows in Ephrata, Washington. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 23.5 snowfall days, and 11.38" (289mm) of snow is accumulated.Daylight
The average length of the day in September in Ephrata, Washington, is 12h and 32min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:37 pm. On the last day of September, in Ephrata, sunrise is at 6:56 am and sunset at 6:38 pm PDT.
Sunshine
The average sunshine in September is 10.8h.UV index
In September, the average daily maximum UV index in Ephrata is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ephrata?
What is the average humidity in September in Ephrata?
How many days does it rain in September in Ephrata?
When does it start to snow in Ephrata?
How many hours of daylight does Ephrata have in September?
When is the sunrise / sunset in September in Ephrata?
How long on average sun shines in September in Ephrata?
What is the UV index reading in September in Ephrata?
Average temperature in September
Ephrata, WA
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (33.4°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (23.2°F).
Average pressure in September
Ephrata, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in September
Ephrata, WA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).
Average humidity in September
Ephrata, WA
- Average humidity in September: 45%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are July and August (37%).
Average rainfall in September
Ephrata, WA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in September
Ephrata, WA
- Average rainfall days in September: 5.4 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (4.2 days).
Average snowfall in September
Ephrata, WA
- Average snowfall in September: 0.12"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Ephrata, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (7.8 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ephrata, WA
- 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 30min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Ephrata, WA
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is March (15.6 days).
Average UV index in September
Ephrata, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Ephrata, WA
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Ephrata, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Ephrata, Washington, USA
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