September weather forecastMillheim, PA
September
Weather in September
September, the first month of the autumn in Millheim, is still a pleasant month, with an average temperature varying between 72.7°F (22.6°C) and 52.5°F (11.4°C).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's warm 80.1°F (26.7°C) to a pleasant 72.7°F (22.6°C). Millheim records a mean low-temperature of 52.5°F (11.4°C) in September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Millheim, Pennsylvania, during September, the rain falls for 12.8 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 173.6 rainfall days, and 33.23" (844mm) of precipitation is accumulated.Snowfall
In Millheim, Pennsylvania, snow does not fall in June through September.Daylight
In Millheim, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:37 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:53 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Millheim, PA
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in September
Millheim, PA
- Average pressure in September: 30.07"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Millheim, PA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Millheim, PA
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Millheim, PA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in September
Millheim, PA
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Millheim, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Millheim, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Millheim, PA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in September
Millheim, PA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (15.9 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in September
Millheim, 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
Millheim, PA
- Average cloud cover in September: 40
The months with the most cloud cover are January, February and December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Millheim, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
