Weather in September
Temperature
September indicates a minor shift in the average high-temperature, from August's moderately hot 77°F (25°C) to a pleasant 70.9°F (21.6°C). A significant drop from the day's peak to an average low-temperature of 49.1°F (9.5°C) is noted during the nights in September.Rainfall
In Allyn-Grapeview, during September, the rain falls for 7 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, there are 146 rainfall days, and 52.17" (1325mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Allyn-Grapeview, Washington.Daylight
In Allyn-Grapeview, Washington, the average length of the day in September is 12h and 32min.On the first day of September in Allyn-Grapeview, sunrise is at 6:31 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:51 pm PDT.
Frequently asked questions
What is the average September temperature in Allyn-Grapeview?
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When it does not snow in Allyn-Grapeview?
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What time are sunrise and sunset in September in Allyn-Grapeview?
Average temperature in September
Allyn-Grapeview, WA
- Average high temperature in September: 70.8°F
The warmest month (with the highest average high temperature) is July (77.1°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is August (52.6°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average rainfall in September
Allyn-Grapeview, WA
- Average rainfall in September: 2.1"
The wettest month (with the highest rainfall) is December (8.8").
The driest month (with the least rainfall) is July (0.8").
Average rainfall days in September
Allyn-Grapeview, WA
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is December (19 days).
The month with the least rainy days is July (4 days).
Average snowfall in September
Allyn-Grapeview, WA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average daylight in September
Allyn-Grapeview, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
Allyn-Grapeview, Washington, USA
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