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 implies a soft temperature shift, with average high-temperatures reducing from August's 81.1°F (27.3°C) to a still warm 74.3°F (23.5°C). Steelton records a consistent low-temperature of 55.8°F (13.2°C) during September nights.Humidity
In September, the average relative humidity is 78%.Rainfall
The months with the least rainfall in Steelton, Pennsylvania, are January and September Rain falls for 10.6 days and accumulates 1.3" (33mm) of rain.Snowfall
In Steelton, snow does not fall in May through October.Daylight
In Steelton, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:38 pm. On the last day of September, in Steelton, sunrise is at 7:03 am and sunset at 6:50 pm EDT.
Sunshine
The average sunshine in September is 9h.UV index
In September, the average daily maximum UV index in Steelton is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the usual temperature for Steelton in September?
What is the average humidity in September in Steelton?
What is the driest month in Steelton?
How many days does it rain in September in Steelton?
When it does not snow in Steelton?
How many hours of daylight does Steelton have in September?
When are sunrise and sunset in September in Steelton?
How long on average sun shines in September in Steelton?
What is the UV index reading in September in Steelton?
Average temperature in September
Steelton, PA
- Average high temperature in September: 74.3°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 (35.2°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Steelton, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Steelton, PA
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Steelton, PA
- Average humidity in September: 78%
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Steelton, PA
- Average rainfall in September: 1.3"
The wettest months (with the highest rainfall) are May and August (2.09").
The driest months (with the least rainfall) are January and September (1.3").
Average rainfall days in September
Steelton, PA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Steelton, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Steelton, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Steelton, 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: 9h and 0min
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 30min).
Average sunshine days in September
Steelton, PA
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Steelton, PA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Steelton, PA
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Steelton, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Steelton, Pennsylvania, USA
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