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
In Pomeroy, the beginning of September is marked by a lowered average high-temperature, shifting from August's 83.8°F (28.8°C) to a still warm 74.3°F (23.5°C). Pomeroy, during September nights, observes an average temperature of 54.5°F (12.5°C).Humidity
The average relative humidity in September is 44%.Rainfall
In Pomeroy, in September, during 6.2 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Pomeroy, during the entire year, the rain falls for 122.8 days and collects up to 13.43" (341mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, in Pomeroy, there are 32.7 snowfall days, and 16.77" (426mm) of snow is accumulated.Daylight
The average length of the day in September in Pomeroy is 12h and 32min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:28 pm. On the last day of September, in Pomeroy, sunrise is at 6:48 am and sunset at 6:31 pm PDT.
Sunshine
In Pomeroy, the average sunshine in September is 10.4h.UV index
The average daily maximum UV index in September in Pomeroy is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
What are September temperatures in Pomeroy?
What is the average humidity in September in Pomeroy?
How much does it rain in Pomeroy in September?
When does it start to snow in Pomeroy?
How many hours of daylight does Pomeroy have in September?
When is the sunrise / sunset in September in Pomeroy?
How many hours of sunshine does Pomeroy have in September?
What is the UV index intensity in September in Pomeroy?
Average temperature in September
Pomeroy, WA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (36.3°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (25.9°F).
Average pressure in September
Pomeroy, WA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in September
Pomeroy, WA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are August and September (6mph).
Average humidity in September
Pomeroy, WA
- Average humidity in September: 44%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Pomeroy, WA
- Average rainfall in September: 0.47"
The wettest months (with the highest rainfall) are March and December (1.69").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Pomeroy, WA
- Average rainfall days in September: 6.2 days
The month with the highest number of rainy days is March (15.7 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in September
Pomeroy, WA
- Average snowfall in September: 0.2"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Pomeroy, WA
- Average snowfall days in September: 0.1 days
The months with the highest number of snowfall days are February and December (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Pomeroy, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Pomeroy, WA
- Average sunshine days in September: 21.9 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (11.9 days).
Average UV index in September
Pomeroy, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Pomeroy, WA
- Average cloud cover in September: 18
The months with the most cloud cover are January and February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Pomeroy, 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).
Pomeroy, Washington, USA
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