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
Grantsville's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 79.7°F (26.5°C) in August to a pleasant 72.9°F (22.7°C). Grantsville experiences an average nighttime temperature of 52.7°F (11.5°C) in the month of September.Humidity
In Grantsville, the average relative humidity in September is 80%.Rainfall
In Grantsville, Maryland, in September, during 14.9 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 186.2 rainfall days, and 31.93" (811mm) of precipitation is accumulated.Snowfall
In Grantsville, Maryland, snow does not fall in June through September.Daylight
In September, the average length of the day in Grantsville, Maryland, is 12h and 26min.On the first day of September, sunrise is at 6:45 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:00 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Grantsville, Maryland, is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the average September temperature in Grantsville?
What is the average humidity in September in Grantsville?
How many days does it rain in September in Grantsville?
When it does not snow in Grantsville?
Does it snow in Grantsville in September?
How many hours of daylight does Grantsville have in September?
When are sunrise and sunset in September in Grantsville?
How long on average sun shines in September in Grantsville?
What is the UV index intensity in September in Grantsville?
Average temperature in September
Grantsville, MD
- Average high temperature in September: 72.9°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 (33.3°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Grantsville, MD
- 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
Grantsville, MD
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Grantsville, MD
- Average humidity in September: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Grantsville, MD
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in September
Grantsville, MD
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is November (11.1 days).
Average snowfall in September
Grantsville, MD
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grantsville, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grantsville, MD
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 24min).
Average sunshine days in September
Grantsville, MD
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is November (15.4 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in September
Grantsville, MD
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Grantsville, MD
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Grantsville, MD
- 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).
Grantsville, Maryland, USA
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