September weather forecast and climate
Saint Helena, NE

Weather in September

The first month of the autumn, September, is still a warm month in Saint Helena, Nebraska, with average temperature ranging between max 76.1°F (24.5°C) and min 55°F (12.8°C).

Temperature

In September, the average high-temperature slightly decreases, from a warm 83.3°F (28.5°C) in August, to a still moderately hot 76.1°F (24.5°C). In Saint Helena, in September, the average low-temperature is 55°F (12.8°C).

Humidity

In September, the average relative humidity is 67%.

Rainfall

In Saint Helena, it is raining for 11.6 days, with typically 1.81" (46mm) of accumulated precipitation. In Saint Helena, during the entire year, the rain falls for 117.9 days and collects up to 21.93" (557mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

The average sunshine in September is 8.8h.

UV index

In Saint Helena, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Saint Helena?

The average high-temperature, in September, is 76.1°F (24.5°C), while the average low-temperature is 55°F (12.8°C).

What is the average humidity in September in Saint Helena?

In Saint Helena, the average relative humidity in September is 67%.

How much does it rain in Saint Helena in September?

In September, the rain falls for 11.6 days. Throughout September, 1.81" (46mm) of precipitation is accumulated.

Does it snow in Saint Helena in September?

In Saint Helena, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Saint Helena?

In Saint Helena, Nebraska, snow does not fall in June through September.

How many hours of daylight does Saint Helena have in September?

In September, the average length of the day in Saint Helena, Nebraska, is 12.5h.

How long on average sun shines in September in Saint Helena?

In Saint Helena, the average sunshine in September is 8.8h.

What is the UV index intensity in September in Saint Helena?

The average daily maximum UV index in September in Saint Helena is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Saint Helena, NE

Average temperature in September - Saint Helena, NE
  • Average high temperature in September: 76.1°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in September: 55°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in September
Saint Helena, NE

Average pressure in September - Saint Helena, NE
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in September
Saint Helena, NE

Average wind speed in September - Saint Helena, NE
  • Average wind speed in September: 9.2mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

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Average humidity in September
Saint Helena, NE

Average humidity in September - Saint Helena, NE
  • Average humidity in September: 67%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in September
Saint Helena, NE

Average rainfall in September - Saint Helena, NE
  • Average rainfall in September: 1.81"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").

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Average rainfall days in September
Saint Helena, NE

Average rainfall days in September - Saint Helena, NE
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in September
Saint Helena, NE

Average snowfall in September - Saint Helena, NE
  • Average snowfall in September: 0"

The month with the highest snowfall is December (2.95").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Saint Helena, NE

Average snowfall days in September - Saint Helena, NE
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.7 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
Saint Helena, NE

Average daylight in September / Average sunshine in September - Saint Helena, 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: 8.8h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 4.4h).

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Average sunshine days in September
Saint Helena, NE

Average sunshine days in September - Saint Helena, NE
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in September
Saint Helena, NE

Average UV index in September - Saint Helena, NE
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Saint Helena, NE

Average cloud cover in September - Saint Helena, NE
  • Average cloud cover in September: 26

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in September
Saint Helena, NE

Average visibility in September - Saint Helena, 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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