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
Terrebonne's September weather shows a moderate shift in high-temperatures, falling from August's warm 81°F (27.2°C) to an agreeable 72°F (22.2°C). In Terrebonne, the average temperature during the nights of September marks a significant drop from the daily high, settling at a chilly 47.1°F (8.4°C).Humidity
The average relative humidity in September is 54%.Rainfall
In Terrebonne, during September, the rain falls for 5.9 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Terrebonne, Oregon, during the entire year, the rain falls for 125.1 days and collects up to 12.48" (317mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Terrebonne. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. In Terrebonne, during the entire year, snow falls for 51.4 days and aggregates up to 24.53" (623mm) of snow.Daylight
In September, the average length of the day in Terrebonne is 12h and 30min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:46 pm PDT.
Sunshine
In Terrebonne, Oregon, the average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for Terrebonne in September?
What is the average humidity in September in Terrebonne?
How much does it rain in Terrebonne in September?
When does it start snowing in Terrebonne?
How many hours of daylight does Terrebonne have in September?
When is the sunrise / sunset in September in Terrebonne?
How long on average sun shines in September in Terrebonne?
How high is the UV index in September in Terrebonne?
Average temperature in September
Terrebonne, OR
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Terrebonne, OR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Terrebonne, OR
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in September
Terrebonne, OR
- Average humidity in September: 54%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (47%).
Average rainfall in September
Terrebonne, OR
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Terrebonne, OR
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Terrebonne, OR
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Terrebonne, OR
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Terrebonne, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Terrebonne, OR
- Average sunshine days in September: 21.7 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (10.2 days).
Average UV index in September
Terrebonne, OR
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Terrebonne, OR
- Average cloud cover in September: 16
The month with the most cloud cover is December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Terrebonne, OR
- 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 months with the lowest visibility are January and December (5mi).
Terrebonne, Oregon, USA
Weather forecast for your location
2. Allow the app to use your location
