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 arrival of September is marked by a minor reduction in average high-temperature, sliding from a warm 78.4°F (25.8°C) in August to an agreeable 69.6°F (20.9°C). Nighttime in September brings a stark departure from the daily high, resting at an average low-temperature of 45.3°F (7.4°C).Humidity
The average relative humidity in September in Joseph, Oregon, is 53%.Rainfall
In September, the rain falls for 8.5 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Joseph, there are 136 rainfall days, and 24.45" (621mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.35" (9mm) of snow. In Joseph, Oregon, during the entire year, snow falls for 89.9 days and aggregates up to 68.82" (1748mm) of snow.Daylight
The average length of the day in September in Joseph is 12h and 31min.On the first day of the month, sunrise is at 6:11 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:46 am and sunset at 6:30 pm PDT.
Sunshine
The average sunshine in September in Joseph is 10.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Joseph in September?
What is the average humidity in September in Joseph?
How many days does it rain in September in Joseph?
When does it start to snow in Joseph?
What is the average length of the day in September in Joseph?
When are sunrise and sunset in September in Joseph?
How long on average sun shines in September in Joseph?
How high is the UV index in September in Joseph?
Average temperature in September
Joseph, OR
- Average high temperature in September: 69.6°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in September
Joseph, OR
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in September
Joseph, OR
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Joseph, OR
- Average humidity in September: 53%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (46%).
Average rainfall in September
Joseph, OR
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is July (0.83").
Average rainfall days in September
Joseph, OR
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is August (5.8 days).
Average snowfall in September
Joseph, OR
- Average snowfall in September: 0.35"
The month with the highest snowfall is February (15.98").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Joseph, OR
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (17.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Joseph, 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 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Joseph, OR
- Average sunshine days in September: 19.4 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (8 days).
Average UV index in September
Joseph, 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 and February (UV index 1).
Average cloud cover in September
Joseph, OR
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Joseph, OR
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Joseph, Oregon, USA
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