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
The onset of September is marked by a minor decrease in temperature, transitioning from 79.9°F (26.6°C) in August to a still warm 73.8°F (23.2°C). During the month of September, the temperature in Schaefferstown falls to an average of 55.4°F (13°C).Humidity
The average relative humidity in September in Schaefferstown is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 13.2 days and accumulates 2.24" (57mm) of precipitation.Snowfall
June through September are months without snowfall in Schaefferstown.Daylight
In September, the average length of the day in Schaefferstown is 12h and 27min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:36 pm. On the last day of September, in Schaefferstown, sunrise is at 7:01 am and sunset at 6:48 pm EDT.
Sunshine
The average sunshine in September in Schaefferstown is 8.9h.UV index
In Schaefferstown, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are September temperatures in Schaefferstown?
What is the average humidity in September in Schaefferstown?
What is the driest month in Schaefferstown?
How many days does it rain in September in Schaefferstown?
When it does not snow in Schaefferstown?
Does it snow in Schaefferstown in September?
What is the average length of the day in September in Schaefferstown?
When are sunrise and sunset in September in Schaefferstown?
How long on average sun shines in September in Schaefferstown?
How high is the UV index in September in Schaefferstown?
Average temperature in September
Schaefferstown, PA
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in September
Schaefferstown, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Schaefferstown, PA
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Schaefferstown, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Schaefferstown, PA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is September (2.24").
Average rainfall days in September
Schaefferstown, PA
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Schaefferstown, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Schaefferstown, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Schaefferstown, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Schaefferstown, PA
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Schaefferstown, PA
- Average UV index in September: 4
The month with the highest UV index is June (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
Schaefferstown, PA
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Schaefferstown, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, June, July, November and December (6mi).
The months with the lowest visibility are February, May, August, September and October (5mi).
Schaefferstown, Pennsylvania, USA
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