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
Lacomb's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 81.1°F (27.3°C) to a still warm 73.4°F (23°C). The nighttime average for Lacomb in September plummets considerably from its daytime counterpart, resting at a frosty 48.9°F (9.4°C).Humidity
In September, the average relative humidity is 71%.Rainfall
In Lacomb, during September, the rain falls for 8.8 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 163.3 rainfall days, and 29.92" (760mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Lacomb, Oregon, is 12h and 30min.On the first day of September, sunrise is at 6:34 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:52 pm PDT.
Sunshine
In Lacomb, the average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September in Lacomb is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are the temperatures in Lacomb in September?
What is the average humidity in September in Lacomb?
How much does it rain in Lacomb in September?
When it does not snow in Lacomb?
How many hours of daylight does Lacomb have in September?
What time are sunrise and sunset in September in Lacomb?
How long on average sun shines in September in Lacomb?
What is the UV index reading in September in Lacomb?
Average temperature in September
Lacomb, OR
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.3°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in September
Lacomb, 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
Lacomb, OR
- Average wind speed in September: 4mph
The windiest months (with the highest average wind speed) are January and March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Lacomb, OR
- Average humidity in September: 71%
The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Lacomb, OR
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is December (4.41").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Lacomb, OR
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is March (20.1 days).
The months with the least rainy days are July and August (3.8 days).
Average snowfall in September
Lacomb, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.13").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Lacomb, 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
Lacomb, 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Lacomb, OR
- Average sunshine days in September: 19.3 days
The month with the most sunshine days is July (25.6 days).
The month with the least sunshine days is March (9.1 days).
Average UV index in September
Lacomb, 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
Lacomb, OR
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Lacomb, OR
- Average visibility in September: 6mi
The months with the highest visibility are July, August and September (6mi).
The month with the lowest visibility is February (4mi).
Lacomb, Oregon, USA
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