United StatesAverage weather for Spokane in September
It's hot in September in Spokane with an average temperature of 31°C. Temperatures this month range from a low of 27°C to a high of 33°C. At night, you can expect temperatures between 16°C and 23°C.
Start of September
The month of September starts in Spokane with hot temps, averaging around 33°C during the day and nights around 23°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps drop to around 31°C, with nights around 22°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Spokane is around 29°C, while nighttime temps are about 20°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended.
In September, there is an average of 150 mm of precipitation, spread over 5 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Spokane in September |
New York | ||
|---|---|---|---|
 Average temperature |
31°C | 27°C | |
 Max. temperature |
33°C | 31°C | |
| Min. temperature |
27°C | -5°C | |
 Total precipitation |
150 mm | 57 mm | |
| Rainy days |
5 days | 9 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Spokane?
Looking for sun? September isn’t a good month to be in Spokane. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Spokane runs from June to November.
Temperature records
With 37°C in 2019, Spokane reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 21°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 7°C to a highest value of 26°C.
Check out the climate of Spokane for all months and discover the best travel time
Daily Temperature in September in Spokane
This chart shows the average daily high and low temperatures in September for Spokane, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Spokane
The chart below shows the average daily precipitation in September for Spokane, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 5 days of precipitation in Spokane.
Daily UV index in September in Spokane
This chart shows the average daily UV index in September in Spokane, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Spokane over the years
This chart shows the average temperature in September in Spokane, measured in degrees Celsius, over the past few years.
Total precipitation in September in Spokane over the years
This chart shows the average precipitation in September in Spokane, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Spokane
Click on any day in September to get detailed info about the usual weather on that day in Spokane. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Spokane
Have you been to Spokane in September?
Share your weather experience in September in Spokane.
Average weather in Spokane by month
Click on a month below to see detailed weather info for Spokane. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
