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 witnesses a gentle descent in average high-temperature, descending from August's 81.3°F (27.4°C) to a still warm 73.9°F (23.3°C). A marked drop from daytime peak temperatures to an average low-temperature of 47.3°F (8.5°C) is observed during the nights in September in Walterville.Humidity
In September, the average relative humidity in Walterville is 73%.Rainfall
In Walterville, during September, the rain falls for 5.2 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 109.9 rainfall days, and 10.08" (256mm) of precipitation is accumulated.Snowfall
In Walterville, snow does not fall in April through November.Daylight
The average length of the day in September in Walterville is 12h and 29min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:53 pm PDT.
Sunshine
The average sunshine in September in Walterville is 9.2h.UV index
The average daily maximum UV index in September in Walterville is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Around midday, solar radiation is most harmful; hence, exposure should be limited. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Walterville in September?
What is the average humidity in September in Walterville?
How much does it rain in Walterville in September?
When it does not snow in Walterville?
What is the average length of the day in September in Walterville?
When are sunrise and sunset in September in Walterville?
How many hours of sunshine does Walterville have in September?
How high is the UV index in September in Walterville?
Average temperature in September
Walterville, OR
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in September
Walterville, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Walterville, OR
- Average wind speed in September: 3.6mph
The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).
Average humidity in September
Walterville, OR
- Average humidity in September: 73%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Walterville, OR
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Walterville, OR
- Average rainfall days in September: 5.2 days
The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in September
Walterville, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Walterville, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 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
Walterville, 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 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Walterville, OR
- Average sunshine days in September: 24.1 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).
Average UV index in September
Walterville, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Walterville, OR
- Average cloud cover in September: 33
The months with the most cloud cover are February and March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Walterville, OR
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Walterville, Oregon, USA
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