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 heralds a minor drop in average high-temperature, sliding from August's 81°F (27.2°C) to a still warm 74.7°F (23.7°C). The average low-temperature of 56.3°F (13.5°C) is witnessed during September.Humidity
The average relative humidity in September in Mountville is 80%.Rainfall
In September, the rain falls for 10.6 days. Throughout September, 0.87" (22mm) of precipitation is accumulated. In Mountville, during the entire year, the rain falls for 125.9 days and collects up to 15.08" (383mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Mountville is 12h and 26min.On the first day of September in Mountville, sunrise is at 6:34 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.
Sunshine
In Mountville, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index in Mountville is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the temperature in September in Mountville?
What is the average humidity in September in Mountville?
How many days does it rain in September in Mountville?
When it does not snow in Mountville?
Does it snow in Mountville in September?
What is the average length of the day in September in Mountville?
When are sunrise and sunset in September in Mountville?
How long on average sun shines in September in Mountville?
What is the UV index intensity in September in Mountville?
Average temperature in September
Mountville, PA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in September
Mountville, 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
Mountville, PA
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Mountville, PA
- Average humidity in September: 80%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Mountville, PA
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is August (2.09").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in September
Mountville, PA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Mountville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mountville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mountville, 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
Mountville, PA
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Mountville, PA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mountville, PA
- Average cloud cover in September: 38
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Mountville, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, October, November and December (6mi).
The months with the lowest visibility are May, August and September (5mi).
Mountville, Pennsylvania, USA
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