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
A mild drop in Bellevue's average high-temperature is observed in September, transitioning from 82.2°F (27.9°C) in August to a still moderately hot 75.7°F (24.3°C). In September, Bellevue's temperature tends to fall to an average low of 55.9°F (13.3°C) during the night.Humidity
The average relative humidity in September is 76%.Rainfall
In Bellevue, during September, the rain falls for 12.9 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, in Bellevue, there are 163.6 rainfall days, and 26.93" (684mm) of precipitation is accumulated.Snowfall
In Bellevue, Pennsylvania, snow does not fall in May through September.Daylight
In Bellevue, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:03 pm EDT.
Sunshine
In September, the average sunshine is 8.2h.UV index
The average daily maximum UV index in September in Bellevue is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the temperature in September in Bellevue?
What is the average humidity in September in Bellevue?
How much does it rain in Bellevue in September?
When it does not snow in Bellevue?
Does it snow in Bellevue in September?
How many hours of daylight does Bellevue have in September?
What time are sunrise and sunset in September in Bellevue?
How many hours of sunshine does Bellevue have in September?
How high is the UV index in September in Bellevue?
Average temperature in September
Bellevue, PA
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Bellevue, PA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Bellevue, PA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Bellevue, PA
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in September
Bellevue, PA
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is November (1.54").
Average rainfall days in September
Bellevue, PA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in September
Bellevue, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Bellevue, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bellevue, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Bellevue, PA
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in September
Bellevue, PA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Bellevue, PA
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Bellevue, PA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Bellevue, Pennsylvania, USA
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