September weather forecastAllegany, OR
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Allegany, Oregon, with an average temperature fluctuating between 66.9°F (19.4°C) and 50.2°F (10.1°C).Temperature
Allegany transitions into September recording an average high-temperature of a comfortable 66.9°F (19.4°C), closely aligning with the preceding month's temperature. Allegany reports an average nighttime low-temperature of 50.2°F (10.1°C) in September.Humidity
The average relative humidity in September is 82%.Rainfall
In Allegany, during September, the rain falls for 8.1 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Allegany, during the entire year, the rain falls for 156.2 days and collects up to 34.17" (868mm) of precipitation.Snowfall
In Allegany, snow does not fall in March through October and December.Daylight
In Allegany, Oregon, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:58 pm PDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 4 transforms into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Allegany, OR
- Average high temperature in September: 66.9°F
The warmest month (with the highest average high temperature) is August (68.5°F).
The month with the lowest average high temperature is December (48.7°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (40.3°F).
Average pressure in September
Allegany, OR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in September
Allegany, OR
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Allegany, OR
- Average humidity in September: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is October (81%).
Average rainfall in September
Allegany, OR
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is December (6.06").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Allegany, OR
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is March (19 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in September
Allegany, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Allegany, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Allegany, OR
- Average daylight in September: 12h and 30min
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 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Allegany, OR
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is July (25.1 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in September
Allegany, OR
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in September
Allegany, OR
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and September (Cloud cover 32).
Average visibility in September
Allegany, OR
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The month with the lowest visibility is August (4mi).
