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
Prairie City's progression into September includes a drop in the average high-temperature, from a moderately hot 81°F (27.2°C) in August to a pleasant 71.2°F (21.8°C). Prairie City logs a considerable temperature decrease from the daytime highs during the nights in September, with an average reading of 44.2°F (6.8°C).Humidity
The average relative humidity in September in Prairie City is 51%.Rainfall
In Prairie City, during September, the rain falls for 6.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Prairie City, during the entire year, the rain falls for 127.7 days and collects up to 17.09" (434mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Prairie City. September is the first month it typically snows in Prairie City. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 62.5 snowfall days, and 39.17" (995mm) of snow is accumulated.Daylight
In Prairie City, the average length of the day in September is 12h and 30min.On the first day of September in Prairie City, sunrise is at 6:18 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:36 pm PDT.
Sunshine
In Prairie City, the average sunshine in September is 10.7h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Take precautions - Protection against sunburn is recommended. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the temperature in September in Prairie City?
What is the average humidity in September in Prairie City?
How much does it rain in Prairie City in September?
When does it start to snow in Prairie City?
How many hours of daylight does Prairie City have in September?
When is the sunrise / sunset in September in Prairie City?
How long on average sun shines in September in Prairie City?
What is the UV index reading in September in Prairie City?
Average temperature in September
Prairie City, OR
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).
- Average low temperature in September: 44.2°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in September
Prairie City, OR
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in September
Prairie City, OR
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity in September
Prairie City, OR
- Average humidity in September: 51%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Prairie City, OR
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Prairie City, OR
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in September
Prairie City, OR
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Prairie City, OR
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Prairie City, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in September
Prairie City, OR
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Prairie City, OR
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Prairie City, OR
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in September
Prairie City, OR
- 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).
Prairie City, Oregon, USA
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