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
Transitioning into September, Allegany records an average high-temperature of a comfortable 66.9°F (19.4°C), almost identical to August's 68.5°F (20.3°C). Allegany observes an average nighttime temperature of 50.2°F (10.1°C) during September.Humidity
In September, the average relative humidity in Allegany is 82%.Rainfall
In Allegany, in September, during 8.1 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Allegany, Oregon, there are 156.2 rainfall days, and 34.17" (868mm) of precipitation is accumulated.Snowfall
March through October and December are months without snowfall in Allegany, Oregon.Daylight
In Allegany, Oregon, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:41 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:58 pm PDT.
Sunshine
In Allegany, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are September temperatures in Allegany?
What is the average humidity in September in Allegany?
How many days does it rain in September in Allegany?
When it does not snow in Allegany?
What is the average length of the day in September in Allegany?
What time are sunrise and sunset in September in Allegany?
How long on average sun shines in September in Allegany?
What is the UV index intensity in September in Allegany?
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 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 2min
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).
Allegany, Oregon, USA
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