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 signals a slight drop in average high-temperature, sliding from August's hot 86.2°F (30.1°C) to a moderately hot 80.2°F (26.8°C). Bethlehem throughout September, experiences an average nighttime temperature of 59.7°F (15.4°C).Humidity
In Bethlehem, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 1.97" (50mm) of precipitation.Snowfall
In Bethlehem, snow does not fall in April through October.Daylight
In Bethlehem, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:57 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:09 pm EDT.
Sunshine
In Bethlehem, the average sunshine in September is 8.6h.UV index
In Bethlehem, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take precautions - Protection against sun damage is advised. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Bethlehem have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Bethlehem, NC
- Average high temperature in September: 80.2°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).
Average pressure in September
Bethlehem, NC
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Bethlehem, NC
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Bethlehem, NC
- Average humidity in September: 75%
The months with the highest relative humidity are May and December (76%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Bethlehem, NC
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Bethlehem, NC
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Bethlehem, NC
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Bethlehem, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Bethlehem, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Bethlehem, NC
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Bethlehem, NC
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Bethlehem, NC
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 28).
Average visibility in September
Bethlehem, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Bethlehem, North Carolina, USA
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