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
National Hill, Pennsylvania, observes a small decrease in the average high-temperature with the arrival of September, falling from August's 82.4°F (28°C) to a still moderately hot 75.7°F (24.3°C). In National Hill, September nights cool down to an average of 55.8°F (13.2°C).Humidity
The average relative humidity in September is 77%.Rainfall
In September, the rain falls for 10.6 days. Throughout September, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 132.6 rainfall days, and 11.5" (292mm) of precipitation is accumulated.Snowfall
In National Hill, snow does not fall in May through October.Daylight
In National Hill, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:48 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 7:03 pm EDT.
Sunshine
The average sunshine in September in National Hill is 8.5h.UV index
The average daily maximum UV index in September in National Hill is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the temperature in September in National Hill?
What is the average humidity in September in National Hill?
How much does it rain in National Hill in September?
When it does not snow in National Hill?
How many hours of daylight does National Hill have in September?
What time are sunrise and sunset in September in National Hill?
How long on average sun shines in September in National Hill?
What is the UV index reading in September in National Hill?
Average temperature in September
National Hill, PA
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
National Hill, 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
National Hill, PA
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
National Hill, PA
- Average humidity in September: 77%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in September
National Hill, PA
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in September
National Hill, PA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
National Hill, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
National Hill, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.3 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
National Hill, 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 24min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
National Hill, PA
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in September
National Hill, PA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
National Hill, PA
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
National Hill, 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).
National Hill, Pennsylvania, USA
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