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 transition into September subtly indicates a reduction in the average high-temperature, down to a still moderately hot 75°F (23.9°C) from August's warm 81.3°F (27.4°C). Throughout the nights in September, McSherrystown experiences an average low-temperature of 56.7°F (13.7°C).Humidity
In September, the average relative humidity in McSherrystown, Pennsylvania, is 79%.Rainfall
In McSherrystown, Pennsylvania, in September, it is raining for 11.3 days, with typically 1.34" (34mm) of accumulated precipitation. In McSherrystown, during the entire year, the rain falls for 133.6 days and collects up to 17.52" (445mm) of precipitation.Snowfall
In McSherrystown, snow does not fall in May through September.Daylight
The average length of the day in September in McSherrystown, Pennsylvania, is 12h and 26min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:38 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:51 pm EDT.
Sunshine
In McSherrystown, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the usual temperature for McSherrystown in September?
What is the average humidity in September in McSherrystown?
How many days does it rain in September in McSherrystown?
When it does not snow in McSherrystown?
Does it snow in McSherrystown in September?
What is the average length of the day in September in McSherrystown?
When is the sunrise / sunset in September in McSherrystown?
How long on average sun shines in September in McSherrystown?
What is the UV index intensity in September in McSherrystown?
Average temperature in September
McSherrystown, PA
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
McSherrystown, 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
McSherrystown, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
McSherrystown, PA
- Average humidity in September: 79%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
McSherrystown, PA
- Average rainfall in September: 1.34"
The wettest months (with the highest rainfall) are July and August (2.01").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
McSherrystown, PA
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
McSherrystown, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
McSherrystown, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
McSherrystown, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
McSherrystown, PA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in September
McSherrystown, PA
- Average UV index in September: 4
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, March, November and December (UV index 2).
Average cloud cover in September
McSherrystown, PA
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
McSherrystown, 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).
McSherrystown, Pennsylvania, USA
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