| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Walla Walla, Washington in September is somewhat warm at 19 °C (66.2 °F).
- Afternoons can be hot with average high temperatures reaching 26 °C (78.8 °F).
- Overnight temperatures are generally quite mild with an average low of 12 °C (53.6 °F).
- The range/ variation of diurnal mean temperatures in September is 14 °C (25.2 °F).
- The weather in September is somewhat parched with occasional rain. A paltry 20mm (0.8in) of liquid precipitates across an average of 5 days.
- In September the blue above Walla Walla, Washington is nice and sunny with an average of a considerable 9:30 of resplendent sunlight per day.
- The shortest day is 11:41 long and the longest day is 13:17 long with an average length of 12:29.
- There are approximately 2:47 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 77.4% of daylight hours and cloudy 22.6% of daylight hours.
Check the distance to and compare the Walla Walla, Washington September averages with somewhere beginning with:
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Weather Trend Graph for September in Walla Walla, Washington, Usa
Navigate to September Weather in Locations Surrounding Walla Walla, Washington:
- Wilbur, Wa, Usa - 224.4 kms (139.5 miles) NNW
- Seattle/ Tacoma, Wa, Usa - 340.8 kms (211.8 miles) WNW
- Yakima, Wa, Usa - 179.1 kms (111.3 miles) WNW
- Sunnyside, Wa, Usa - 128.7 kms (80 miles) W
- Pendleton, Or, Usa - 55.8 kms (34.7 miles) SW
- Vancouver, Wa, Usa - 338.1 kms (210.1 miles) W
- Portland, Oregon, Usa - 334.1 kms (207.6 miles) W
- Moro, Or, Usa - 237.4 kms (147.5 miles) WSW
- Burns, Oregon, Usa - 278.2 kms (172.9 miles) SSW
- Libby, Mt, Usa - 335.5 kms (208.5 miles) NE
- Priest River, Id, Usa - 262 kms (162.8 miles) NNE
- Davenport, Wa, Usa - 180.8 kms (112.3 miles) N
- Spokane, Wa, Usa - 188 kms (116.8 miles) NNE
- Missoula, Mt, Usa - 339.9 kms (211.2 miles) ENE
- Lewiston, Id, Usa - 108.5 kms (67.4 miles) ENE
- Daytonwsw, Wa, Usa - 42.6 kms (26.5 miles) NE
- Boise, Idaho, Usa - 321.3 kms (199.6 miles) SSE