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
Monongahela's September weather features a light decline in high-temperatures, reducing from a moderately hot 82°F (27.8°C) in August to a still warm 75.6°F (24.2°C). Monongahela records a steady low-temperature average of 55.2°F (12.9°C) during September.Humidity
In Monongahela, the average relative humidity in September is 77%.Rainfall
In Monongahela, during September, the rain falls for 12.3 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 161.6 rainfall days, and 20" (508mm) of precipitation is accumulated.Snowfall
In Monongahela, Pennsylvania, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Monongahela, sunrise is at 6:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:03 pm EDT.
Sunshine
In September, the average sunshine in Monongahela is 8.6h.UV index
The average daily maximum UV index in September in Monongahela, Pennsylvania, is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What is the average September temperature in Monongahela?
What is the average humidity in September in Monongahela?
How much does it rain in Monongahela in September?
When it does not snow in Monongahela?
Does it snow in Monongahela in September?
What is the average length of the day in September in Monongahela?
What time are sunrise and sunset in September in Monongahela?
How long on average sun shines in September in Monongahela?
What is the UV index reading in September in Monongahela?
Average temperature in September
Monongahela, PA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Monongahela, PA
- Average pressure in September: 30.05"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
Monongahela, PA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Monongahela, PA
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in September
Monongahela, PA
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Monongahela, PA
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Monongahela, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Monongahela, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14 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
Monongahela, 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 August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Monongahela, PA
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Monongahela, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Monongahela, PA
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Monongahela, PA
- Average visibility in September: 5mi
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).
Monongahela, Pennsylvania, USA
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