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 transition into September involves a decrease in the average high-temperature, falling from a moderately hot 83.3°F (28.5°C) in August to an agreeable 73.2°F (22.9°C). During September, Wishram Heights experiences an average low-temperature of 52.7°F (11.5°C) at night.Humidity
In September, the average relative humidity in Wishram Heights is 54%.Rainfall
In September, in Wishram Heights, Washington, the rain falls for 5.8 days. Throughout September, 0.35" (9mm) of precipitation is accumulated. Throughout the year, in Wishram Heights, there are 112.2 rainfall days, and 10.91" (277mm) of precipitation is accumulated.Snowfall
In Wishram Heights, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Wishram Heights, sunrise is at 6:26 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:45 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What are the temperatures in Wishram Heights in September?
What is the average humidity in September in Wishram Heights?
How many days does it rain in September in Wishram Heights?
When it does not snow in Wishram Heights?
What is the average length of the day in September in Wishram Heights?
When is the sunrise / sunset in September in Wishram Heights?
How many hours of sunshine does Wishram Heights have in September?
What is the UV index reading in September in Wishram Heights?
Average temperature in September
Wishram Heights, WA
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in September
Wishram Heights, WA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in September
Wishram Heights, WA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5mph).
Average humidity in September
Wishram Heights, WA
- Average humidity in September: 54%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Wishram Heights, WA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is January (1.93").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Wishram Heights, WA
- Average rainfall days in September: 5.8 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (2.9 days).
Average snowfall in September
Wishram Heights, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Wishram Heights, WA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Wishram Heights, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Wishram Heights, WA
- Average sunshine days in September: 22.3 days
The month with the most sunshine days is July (27 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Wishram Heights, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Wishram Heights, WA
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Wishram Heights, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Wishram Heights, Washington, USA
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