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 advent of September brings an average high-temperature of a still enjoyable 61.3°F (16.3°C), exhibiting minor difference from the previous month. A modest decline from daytime high temperatures in Olga, Washington, is noticed in September, marking the average low at a moderate 55.6°F (13.1°C).Humidity
The months with the highest humidity in Olga are January, August and September, with an average relative humidity of 79%.Rainfall
In Olga, in September, during 11.6 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Olga, during the entire year, the rain falls for 167.7 days and collects up to 23.46" (596mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Olga, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:29 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:51 pm PDT.
Sunshine
In Olga, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Olga?
What is the most humid month in Olga?
What is the average humidity in September in Olga?
How many days does it rain in September in Olga?
When it does not snow in Olga?
What is the average length of the day in September in Olga?
What time are sunrise and sunset in September in Olga?
How many hours of sunshine does Olga have in September?
What is the UV index reading in September in Olga?
Average temperature in September
Olga, WA
- Average high temperature in September: 61.3°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in September
Olga, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Olga, WA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Olga, WA
- Average humidity in September: 79%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Olga, WA
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Olga, WA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in September
Olga, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Olga, 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
Olga, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Olga, WA
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in September
Olga, WA
- Average UV index in September: 4
The month with the highest UV index is 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
Olga, WA
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in September
Olga, WA
- 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).
Olga, Washington, USA
Weather forecast for your location
2. Allow the app to use your location