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 marks a gentle change in average high-temperature, declining from August's moderately hot 81.1°F (27.3°C) to a still warm 75°F (23.9°C). Throughout the month of September, Spring Grove witnesses an average temperature of 56.8°F (13.8°C).Humidity
In September, the average relative humidity in Spring Grove is 79%.Rainfall
In Spring Grove, in September, during 9.4 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Spring Grove, during the entire year, the rain falls for 124 days and collects up to 11.85" (301mm) of precipitation.Snowfall
In Spring Grove, Pennsylvania, snow does not fall in June through October.Daylight
In September, the average length of the day in Spring Grove 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, in Spring Grove, Pennsylvania, sunrise is at 7:03 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September in Spring Grove, Pennsylvania, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are September temperatures in Spring Grove?
What is the average humidity in September in Spring Grove?
How many days does it rain in September in Spring Grove?
When it does not snow in Spring Grove?
What is the average length of the day in September in Spring Grove?
What time are sunrise and sunset in September in Spring Grove?
How many hours of sunshine does Spring Grove have in September?
What is the UV index intensity in September in Spring Grove?
Average temperature in September
Spring Grove, 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°F).
- Average low temperature in September: 56.8°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
Spring Grove, 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 (29.94"Hg).
Average wind speed in September
Spring Grove, PA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Spring Grove, PA
- Average humidity in September: 79%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Spring Grove, PA
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.38").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in September
Spring Grove, PA
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Spring Grove, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Spring Grove, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 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
Spring Grove, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Spring Grove, PA
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in September
Spring Grove, 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, November and December (UV index 2).
Average cloud cover in September
Spring Grove, 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 30).
Average visibility in September
Spring Grove, 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).
Spring Grove, Pennsylvania, USA
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