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 shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 79.3°F (26.3°C) to a pleasant 73.2°F (22.9°C). In Muir, in September, the average low-temperature is a cool 54°F (12.2°C).Humidity
In Muir, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 8.8 days and accumulates 0.35" (9mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:49 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Muir?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Muir have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Muir have in September?
What is the UV index reading in September?
Average temperature in September
Muir, PA
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Muir, 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 (29.94"Hg).
Average wind speed in September
Muir, PA
- Average wind speed in September: 5.5mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Muir, PA
- Average humidity in September: 80%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in September
Muir, PA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in September
Muir, PA
- Average rainfall days in September: 8.8 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Muir, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Muir, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Muir, PA
- Average daylight in September: 12h and 3min
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 18min).
- 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 February (Average sunshine: 4h and 12min).
Average sunshine days in September
Muir, PA
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (14.6 days).
Average UV index in September
Muir, 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
Muir, PA
- Average cloud cover in September: 39
The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Muir, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Muir, Pennsylvania, USA
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