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
Pateros's September weather shows a moderate shift in high-temperatures, falling from August's moderately hot 83.1°F (28.4°C) to a pleasant 71.2°F (21.8°C). A dramatic downturn marks the September nights in Pateros, with lows averaging at a chilly 49.5°F (9.7°C).Humidity
The average relative humidity in September in Pateros is 49%.Rainfall
In Pateros, in September, during 6.2 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Pateros, during the entire year, the rain falls for 101.3 days and collects up to 9.45" (240mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Pateros is 12h and 33min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:39 pm. On the last day of September, in Pateros, sunrise is at 6:58 am and sunset at 6:40 pm PDT.
Sunshine
In Pateros, the average sunshine in September is 10.8h.UV index
In Pateros, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What is the temperature in September in Pateros?
What is the average humidity in September in Pateros?
How much does it rain in Pateros in September?
When it does not snow in Pateros?
What is the average length of the day in September in Pateros?
When is the sunrise / sunset in September in Pateros?
How many hours of sunshine does Pateros have in September?
What is the UV index intensity in September in Pateros?
Average temperature in September
Pateros, WA
- Average high temperature in September: 71.2°F
The warmest months (with the highest average high temperature) are July and August (83.1°F).
The months with the lowest average high temperature are January and December (30.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (57°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).
Average pressure in September
Pateros, WA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed in September
Pateros, WA
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are April, June and July (5.3mph).
The calmest month (with the lowest average wind speed) is January (3.5mph).
Average humidity in September
Pateros, WA
- Average humidity in September: 49%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Pateros, WA
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Pateros, WA
- Average rainfall days in September: 6.2 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (2.8 days).
Average snowfall in September
Pateros, WA
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Pateros, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (9.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Pateros, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- 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: 4h and 12min).
Average sunshine days in September
Pateros, WA
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (13.7 days).
Average UV index in September
Pateros, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Pateros, WA
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Pateros, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Pateros, Washington, USA
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