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
The average high-temperature during September is a still refreshing 65.3°F (18.5°C), almost matching the conditions of the preceding month. Throughout the nights in September, an average low-temperature of 53.6°F (12°C) is noted.Humidity
In Langlois, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 7.2 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, there are 148.6 rainfall days, and 34.13" (867mm) of precipitation is accumulated.Snowfall
In Langlois, snow does not fall in January, March through December.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:43 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:00 pm PDT.
Sunshine
In Langlois, the average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. 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?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Langlois have in September?
What is the UV index reading in September?
Average temperature in September
Langlois, OR
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is August (66°F).
The month with the lowest average high temperature is December (50.5°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is February (43°F).
Average pressure in September
Langlois, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in September
Langlois, OR
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest months (with the lowest average wind speed) are August and September (8.1mph).
Average humidity in September
Langlois, OR
- Average humidity in September: 81%
The month with the highest relative humidity is August (84%).
The months with the lowest relative humidity are April, October and December (80%).
Average rainfall in September
Langlois, OR
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is December (5.83").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Langlois, OR
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is March (18.9 days).
The months with the least rainy days are July and August (3.6 days).
Average snowfall in September
Langlois, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Langlois, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Langlois, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Langlois, OR
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (10.4 days).
Average UV index in September
Langlois, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
Langlois, OR
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in September
Langlois, OR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Langlois, Oregon, USA
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