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
During the transition into September, Uniontown observes a decrease in the average high-temperature, falling from a moderately hot 85.6°F (29.8°C) in August to a still warm 75.4°F (24.1°C). September is characterized by a distinct thermal shift, with nighttime lows averaging at a fresh 52.7°F (11.5°C).Humidity
The average relative humidity in September in Uniontown, Washington, is 45%.Rainfall
In September, the rain falls for 5.1 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. Throughout the year, there are 116.2 rainfall days, and 8.23" (209mm) of precipitation is accumulated.Snowfall
In Uniontown, snow does not fall in April through September.Daylight
In September, the average length of the day in Uniontown, Washington, is 12h and 32min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:26 pm. On the last day of September, in Uniontown, sunrise is at 6:46 am and sunset at 6:29 pm PDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
In Uniontown, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the usual temperature for Uniontown in September?
What is the average humidity in September in Uniontown?
How many days does it rain in September in Uniontown?
When it does not snow in Uniontown?
Does it snow in Uniontown in September?
What is the average length of the day in September in Uniontown?
When is the sunrise / sunset in September in Uniontown?
How many hours of sunshine does Uniontown have in September?
What is the UV index reading in September in Uniontown?
Average temperature in September
Uniontown, WA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (59.4°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in September
Uniontown, WA
- Average pressure in September: 29.96"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
Uniontown, WA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Uniontown, WA
- Average humidity in September: 45%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).
Average rainfall in September
Uniontown, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in September
Uniontown, WA
- Average rainfall days in September: 5.1 days
The months with the highest number of rainy days are March and April (13.8 days).
The month with the least rainy days is August (4.5 days).
Average snowfall in September
Uniontown, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in September
Uniontown, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Uniontown, 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 36min).
- Average sunshine in September: 10h and 3min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Uniontown, WA
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
Uniontown, 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
Uniontown, WA
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Uniontown, 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).
Uniontown, Washington, USA
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