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
September signals a slight drop in average high-temperature, sliding from August's moderately hot 82.9°F (28.3°C) to a still warm 77.2°F (25.1°C). An average low-temperature of 62.8°F (17.1°C) is recorded in the month of September.Humidity
In September, the average relative humidity is 78%.Rainfall
In Hillsboro, in September, it is raining for 13.5 days, with typically 1.97" (50mm) of accumulated precipitation. In Hillsboro, during the entire year, the rain falls for 154.5 days and collects up to 28.66" (728mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September in Hillsboro is 12h and 26min.On the first day of September, sunrise is at 6:33 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:47 pm EDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To guard against the harmful effects of the Sun, minimize exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Hillsboro have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Hillsboro, MD
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in September
Hillsboro, MD
- Average pressure in September: 30.05"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
Hillsboro, MD
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is February (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Hillsboro, MD
- Average humidity in September: 78%
The months with the highest relative humidity are May and August (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Hillsboro, MD
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in September
Hillsboro, MD
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Hillsboro, MD
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Hillsboro, MD
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hillsboro, 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 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Hillsboro, MD
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Hillsboro, MD
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Hillsboro, MD
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Hillsboro, MD
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hillsboro, Maryland, USA
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