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 commencement of September involves a temperature shift, with the average high-temperature dropping from a moderately hot 81.5°F (27.5°C) in August to a pleasant 71.8°F (22.1°C). Ukiah experiences a mean temperature of 52.3°F (11.3°C) during September nights.Humidity
The average relative humidity in September is 48%.Rainfall
In Ukiah, during September, the rain falls for 6.7 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Ukiah, during the entire year, the rain falls for 145.3 days and collects up to 16.69" (424mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Ukiah, Oregon. Throughout September, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 30.7 snowfall days, and 15.51" (394mm) of snow is accumulated.Daylight
The average length of the day in September in Ukiah, Oregon, is 12h and 31min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:32 pm. On the last day of September, in Ukiah, sunrise is at 6:53 am and sunset at 6:37 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
In Ukiah, 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 radiation for ordinary individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Boost your sun resistance with garments that are densely woven yet spacious. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are the temperatures in Ukiah in September?
What is the average humidity in September in Ukiah?
How many days does it rain in September in Ukiah?
When does it start to snow in Ukiah?
What is the average length of the day in September in Ukiah?
When is the sunrise / sunset in September in Ukiah?
How long on average sun shines in September in Ukiah?
What is the UV index reading in September in Ukiah?
Average temperature in September
Ukiah, OR
- Average high temperature in September: 71.8°F
The warmest months (with the highest average high temperature) are July and August (81.5°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is August (59.5°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Ukiah, OR
- 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
Ukiah, OR
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity in September
Ukiah, OR
- Average humidity in September: 48%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Ukiah, OR
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is March (2.2").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Ukiah, OR
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in September
Ukiah, OR
- Average snowfall in September: 0.12"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Ukiah, OR
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ukiah, OR
- 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 3min
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
Ukiah, OR
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in September
Ukiah, OR
- 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
Ukiah, OR
- Average cloud cover in September: 18
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Ukiah, OR
- 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).
Ukiah, Oregon, USA
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