September weather forecast and climate
Harrisonburg, VA

Weather in September

September, the first month of the autumn, in Harrisonburg, is also a moderately hot month, with average temperature fluctuating between 75.4°F (24.1°C) and 54.5°F (12.5°C).

Temperature

In Harrisonburg, the average high-temperature slightly decreases, from 82°F (27.8°C) in August, to a still warm 75.4°F (24.1°C). In Harrisonburg, the average low-temperature is 54.5°F (12.5°C).

Humidity

May, September and October, with an average relative humidity of 78%, are most humid months in Harrisonburg.

Rainfall

In Harrisonburg, during 14.5 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. In Harrisonburg, Virginia, during the entire year, the rain falls for 167.3 days and collects up to 30.35" (771mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Harrisonburg is 12.4h.

Sunshine

The average sunshine in September is 8.5h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What are the most humid months in Harrisonburg?

May, September and October, with an average relative humidity of 78%, are most humid months in Harrisonburg.

What is the average humidity in September in Harrisonburg?

In September, the average relative humidity in Harrisonburg, Virginia, is 78%.

How many days does it rain in September in Harrisonburg?

In September, in Harrisonburg, the rain falls for 14.5 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Harrisonburg?

In Harrisonburg, Virginia, snow does not fall in June through September.

Does it snow in Harrisonburg in September?

In Harrisonburg, Virginia, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Harrisonburg have in September?

The average length of the day in September in Harrisonburg is 12.4h.

How long on average sun shines in September in Harrisonburg?

The average sunshine in September in Harrisonburg, Virginia, is 8.5h.

What is the UV index reading in September in Harrisonburg?

The average daily maximum UV index in September in Harrisonburg, Virginia, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Harrisonburg, VA

Average temperature in September - Harrisonburg, VA
  • Average high temperature in September: 75.4°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 54.5°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in September
Harrisonburg, VA

Average pressure in September - Harrisonburg, VA
  • Average pressure in September: 30.06"

The month with the highest atmospheric pressure is November (30.15").
The month with the lowest atmospheric pressure is June (29.96").

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Average wind speed in September
Harrisonburg, VA

Average wind speed in September - Harrisonburg, VA
  • Average wind speed in September: 4.5mph

The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in September
Harrisonburg, VA

Average humidity in September - Harrisonburg, VA
  • Average humidity in September: 78%

Months with the highest relative humidity are May, September and October (78%).
Months with the lowest relative humidity are January and July (74%).

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Average rainfall in September
Harrisonburg, VA

Average rainfall in September - Harrisonburg, VA
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is November (1.77").

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Average rainfall days in September
Harrisonburg, VA

Average rainfall days in September - Harrisonburg, VA
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is November (9 days).

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Average snowfall in September
Harrisonburg, VA

Average snowfall in September - Harrisonburg, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.45").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Harrisonburg, VA

Average snowfall days in September - Harrisonburg, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Harrisonburg, VA

Average daylight in September / Average sunshine in September - Harrisonburg, VA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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Average sunshine days in September
Harrisonburg, VA

Average sunshine days in September - Harrisonburg, VA
  • Average sunshine days in September: 12.3 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.9 days).

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Average UV index in September
Harrisonburg, VA

Average UV index in September - Harrisonburg, VA
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Harrisonburg, VA

Average cloud cover in September - Harrisonburg, VA
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 46).
Months with the least cloud cover are June and July (Cloud cover 32).

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Average visibility in September
Harrisonburg, VA

Average visibility in September - Harrisonburg, VA
  • Average visibility in September: 5mi

Months with the highest visibility are February, April, June, July and November (6mi).
Months with the lowest visibility are January, March, May, August, September, October and December (5mi).

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