September weather forecast
Harrison, NE

Weather in September

The first month of the autumn, September, is still a warm month in Harrison, Nebraska, with average temperature fluctuating between 55.2°F (12.9°C) and 75.6°F (24.2°C).

Temperature

In September, the average high-temperature marginally drops, from 83.8°F (28.8°C) in August, to a still moderately hot 75.6°F (24.2°C). The average low-temperature,, is 55.2°F (12.9°C).

Humidity

In Harrison, the average relative humidity is 45%.

Rainfall

In September, the rain falls for 7.4 days. Throughout September, 0.67" (17mm) of precipitation is accumulated. In Harrison, during the entire year, the rain falls for 94.9 days and collects up to 10.39" (264mm) of precipitation.

Snowfall

Months with snowfall in Harrison, Nebraska, are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Harrison, during the entire year, snow falls for 43.5 days, and aggregates up to 15.63" (397mm) of snow.

Daylight

In Harrison, the average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine in Harrison is 10.7h.

UV index

In September, the average daily maximum UV index in Harrison is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Harrison?

In Harrison, Nebraska, the average relative humidity in September is 45%.

How much does it rain in Harrison in September?

In Harrison, in September, it is raining for 7.4 days, with typically 0.67" (17mm) of accumulated precipitation.

When does it start snowing in Harrison?

September is the first month it typically snows in Harrison. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Harrison have in September?

The average length of the day in September in Harrison is 12.5h.

How many hours of sunshine does Harrison have in September?

In September, the average sunshine in Harrison, Nebraska, is 10.7h.

What is the UV index reading in September in Harrison?

In Harrison, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Harrison, NE

Average temperature in September - Harrison, NE
  • Average high temperature in September: 75.6°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).

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Average pressure in September
Harrison, NE

Average pressure in September - Harrison, NE
  • Average pressure in September: 29.93"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in September
Harrison, NE

Average wind speed in September - Harrison, NE
  • Average wind speed in September: 10.5mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

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Average humidity in September
Harrison, NE

Average humidity in September - Harrison, NE
  • Average humidity in September: 45%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (44%).

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Average rainfall in September
Harrison, NE

Average rainfall in September - Harrison, NE
  • Average rainfall in September: 0.67"

The wettest months (with the highest rainfall) are May and June (1.57").
The driest month (with the least rainfall) is January (0.28").

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Average rainfall days in September
Harrison, NE

Average rainfall days in September - Harrison, NE
  • Average rainfall days in September: 7.4 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is December (2.7 days).

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Average snowfall in September
Harrison, NE

Average snowfall in September - Harrison, NE
  • Average snowfall in September: 0.08"

The month with the highest snowfall is March (2.56").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Harrison, NE

Average snowfall days in September - Harrison, NE
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is February (8 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Harrison, NE

Average daylight in September / Average sunshine in September - Harrison, NE
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in September: 10.7h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
Months with the least sunshine are February and December (Average sunshine: 6.2).

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Average sunshine days in September
Harrison, NE

Average sunshine days in September - Harrison, NE
  • Average sunshine days in September: 19.7 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in September
Harrison, NE

Average UV index in September - Harrison, NE
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (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
Harrison, NE

Average cloud cover in September - Harrison, NE
  • Average cloud cover in September: 17

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in September
Harrison, NE

Average visibility in September - Harrison, NE
  • Average visibility in September: 6mi

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

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