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 is characterized by a slight reduction in average high-temperature, easing from 81.1°F (27.3°C) in August to a still moderately hot 73.6°F (23.1°C). Monroe's average low-temperature of 48.6°F (9.2°C) in September reflects a considerable decline from the daytime peak.Humidity
In Monroe, the average relative humidity in September is 73%.Rainfall
In Monroe, during September, the rain falls for 8.5 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, there are 161.8 rainfall days, and 28.82" (732mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in Monroe, sunrise is at 6:37 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm PDT.
Sunshine
In September, the average sunshine in Monroe is 9.3h.UV index
The average daily maximum UV index in September in Monroe is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the temperature in September in Monroe?
What is the average humidity in September in Monroe?
How many days does it rain in September in Monroe?
When it does not snow in Monroe?
How many hours of daylight does Monroe have in September?
What time are sunrise and sunset in September in Monroe?
How many hours of sunshine does Monroe have in September?
What is the UV index reading in September in Monroe?
Average temperature in September
Monroe, OR
- Average high temperature in September: 73.6°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 (45.7°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in September
Monroe, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in September
Monroe, OR
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is March (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).
Average humidity in September
Monroe, OR
- Average humidity in September: 73%
The months with the highest relative humidity are January, February, March and December (87%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Monroe, OR
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in September
Monroe, OR
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in September
Monroe, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Monroe, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 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
Monroe, 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 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Monroe, OR
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is July (26.2 days).
The months with the least sunshine days are February and March (9.4 days).
Average UV index in September
Monroe, 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
Monroe, OR
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Monroe, OR
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Monroe, Oregon, USA
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