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
September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 80.1°F (26.7°C) in August to a pleasant 72.9°F (22.7°C). Despite drastic daytime highs, Elmira logs an average low-temperature reading of 46.8°F (8.2°C) throughout September.Humidity
In September, the average relative humidity is 76%.Rainfall
In Elmira, in September, it is raining for 5.6 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 111.5 rainfall days, and 7.6" (193mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In Elmira, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:37 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:55 pm PDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Elmira have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Elmira, OR
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is August (80.1°F).
The month with the lowest average high temperature is December (45.7°F).
- Average low temperature in September: 46.8°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in September
Elmira, OR
- 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
Elmira, OR
- Average wind speed in September: 3.6mph
The windiest month (with the highest average wind speed) is March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).
Average humidity in September
Elmira, OR
- Average humidity in September: 76%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in September
Elmira, OR
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in September
Elmira, OR
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is July (2.1 days).
Average snowfall in September
Elmira, OR
- Average snowfall in September: 0"
The month with the highest snowfall is November (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Elmira, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Elmira, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 0min
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 48min).
Average sunshine days in September
Elmira, OR
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is March (12.9 days).
Average UV index in September
Elmira, OR
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Elmira, OR
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Elmira, OR
- Average visibility in September: 4mi
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
Elmira, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location