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
Mount Airy experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from 82.2°F (27.9°C) in August to a still warm 76.1°F (24.5°C). Mount Airy usually reports an average low-temperature of 58.5°F (14.7°C) during the month of September.Humidity
The average relative humidity in September in Mount Airy is 78%.Rainfall
In Mount Airy, in September, it is raining for 13.9 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, in Mount Airy, Maryland, there are 160.9 rainfall days, and 33.23" (844mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Mount Airy.Daylight
In September, the average length of the day in Mount Airy is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of September, in Mount Airy, sunrise is at 7:04 am and sunset at 6:52 pm EDT.
Sunshine
In Mount Airy, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Mount Airy 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: In September, the maximum UV index of 4 transforms into these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
What are the temperatures in Mount Airy in September?
What is the average humidity in September in Mount Airy?
How much does it rain in Mount Airy in September?
When it does not snow in Mount Airy?
Does it snow in Mount Airy in September?
How many hours of daylight does Mount Airy have in September?
When is the sunrise / sunset in September in Mount Airy?
How long on average sun shines in September in Mount Airy?
What is the UV index intensity in September in Mount Airy?
Average temperature in September
Mount Airy, MD
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in September
Mount Airy, 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
Mount Airy, MD
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Mount Airy, MD
- Average humidity in September: 78%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, April and July (75%).
Average rainfall in September
Mount Airy, MD
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").
Average rainfall days in September
Mount Airy, MD
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Mount Airy, MD
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Airy, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Airy, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days in September
Mount Airy, MD
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Mount Airy, MD
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mount Airy, MD
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Mount Airy, MD
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Mount Airy, Maryland, USA
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