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
A minor decrease in the average high-temperature is observed during September, shifting from 81.1°F (27.3°C) in August to a still moderately hot 73.9°F (23.3°C). The average temperature during September nights in Calvin, Pennsylvania, is registered at a cool 52.7°F (11.5°C).Humidity
In Calvin, the average relative humidity in September is 79%.Rainfall
In Calvin, in September, during 11.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Calvin, there are 148.3 rainfall days, and 17.6" (447mm) of precipitation is accumulated.Snowfall
In Calvin, snow does not fall in May through September.Daylight
In Calvin, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:40 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:55 pm EDT.
Sunshine
In Calvin, the average sunshine in September is 8.6h.UV index
In Calvin, Pennsylvania, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Take precautions - Protection against sunburn is recommended. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the usual temperature for Calvin in September?
What is the average humidity in September in Calvin?
How much does it rain in Calvin in September?
When it does not snow in Calvin?
Does it snow in Calvin in September?
How many hours of daylight does Calvin have in September?
What time are sunrise and sunset in September in Calvin?
How many hours of sunshine does Calvin have in September?
What is the UV index reading in September in Calvin?
Average temperature in September
Calvin, PA
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Calvin, 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
Calvin, PA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Calvin, PA
- Average humidity in September: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Calvin, PA
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.17").
The driest months (with the least rainfall) are January and November (1.06").
Average rainfall days in September
Calvin, PA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (16.9 days).
The months with the least rainy days are January and February (8.3 days).
Average snowfall in September
Calvin, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Calvin, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Calvin, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Calvin, PA
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in September
Calvin, PA
- Average UV index in September: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Calvin, PA
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Calvin, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Calvin, Pennsylvania, USA
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