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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's warm 78.1°F (25.6°C) to an agreeable 70.3°F (21.3°C). In Tenino, the average temperature during the nights of September marks a significant drop from the daily high, settling at a chilly 47.3°F (8.5°C).Humidity
In September, the average relative humidity in Tenino is 78%.Rainfall
In Tenino, in September, during 10.5 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Tenino, during the entire year, the rain falls for 151.2 days and collects up to 17.72" (450mm) of precipitation.Snowfall
In Tenino, snow does not fall in May through October.Daylight
In Tenino, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:32 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:52 pm PDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Tenino?
What is the average humidity in September in Tenino?
How much does it rain in Tenino in September?
When it does not snow in Tenino?
How many hours of daylight does Tenino have in September?
When are sunrise and sunset in September in Tenino?
How long on average sun shines in September in Tenino?
How high is the UV index in September in Tenino?
Average temperature in September
Tenino, WA
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is August (50.4°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in September
Tenino, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in September
Tenino, WA
- Average wind speed in September: 3.6mph
The windiest months (with the highest average wind speed) are January, February, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in September
Tenino, WA
- Average humidity in September: 78%
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (72%).
Average rainfall in September
Tenino, WA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is December (2.8").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Tenino, WA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is August (4.7 days).
Average snowfall in September
Tenino, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Tenino, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 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
Tenino, 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: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Tenino, WA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (23 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in September
Tenino, 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
Tenino, WA
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Tenino, WA
- Average visibility in September: 4mi
The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).
Tenino, Washington, USA
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