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
September's onset brings a negligible change in high-temperatures, falling from 80.4°F (26.9°C) in August to a still warm 73.9°F (23.3°C). Pleasant Hill, in the heat of September, registers a significant plunge to a mean of 46.4°F (8°C) during the nights.Humidity
The average relative humidity in September in Pleasant Hill, Oregon, is 73%.Rainfall
In Pleasant Hill, in September, it is raining for 7.8 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, in Pleasant Hill, there are 158.1 rainfall days, and 30.12" (765mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Pleasant Hill is 12h and 29min.On the first day of September in Pleasant Hill, sunrise is at 6:36 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:53 pm PDT.
Sunshine
In Pleasant Hill, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September in Pleasant Hill is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the average September temperature in Pleasant Hill?
What is the average humidity in September in Pleasant Hill?
How many days does it rain in September in Pleasant Hill?
When it does not snow in Pleasant Hill?
What is the average length of the day in September in Pleasant Hill?
What time are sunrise and sunset in September in Pleasant Hill?
How long on average sun shines in September in Pleasant Hill?
What is the UV index reading in September in Pleasant Hill?
Average temperature in September
Pleasant Hill, OR
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in September: 46.4°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 (33.8°F).
Average pressure in September
Pleasant Hill, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Pleasant Hill, OR
- Average wind speed in September: 3.5mph
The windiest months (with the highest average wind speed) are January and March (4.4mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity in September
Pleasant Hill, OR
- Average humidity in September: 73%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Pleasant Hill, OR
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Pleasant Hill, OR
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in September
Pleasant Hill, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Pleasant Hill, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 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
Pleasant Hill, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in September
Pleasant Hill, OR
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is August (25.6 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in September
Pleasant Hill, 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, November and December (UV index 2).
Average cloud cover in September
Pleasant Hill, OR
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Pleasant Hill, OR
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Pleasant Hill, Oregon, USA
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