September weather forecast and climate
Trumbull, NE

September, the first month of the autumn, in Trumbull, is still a warm month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 78.4°F (25.8°C).

Temperature

In September, the average high-temperature slightly decreases, from 85.6°F (29.8°C) in August, to a still warm 78.4°F (25.8°C). In September, in Trumbull, the average low-temperature is 57.2°F (14°C).

Humidity

The average relative humidity in September is 65%.

Rainfall

In Trumbull, during September, the rain falls for 12.5 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Trumbull, during the entire year, the rain falls for 123 days and collects up to 21.89" (556mm) of precipitation.

Snowfall

In Trumbull snow does not fall in June through September.

Daylight

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

Sunshine

In September, the average sunshine is 8.5h.

UV index

In September, the average daily maximum UV index in Trumbull is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in September in Trumbull?

In Trumbull, in September, the average high-temperature is 78.4°F (25.8°C), and the average low-temperature is 57.2°F (14°C).

What is the average humidity in September in Trumbull?

In September, the average relative humidity in Trumbull is 65%.

How much does it rain in Trumbull in September?

In Trumbull, in September, during 12.5 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

Does it snow in Trumbull in September?

In Trumbull, Nebraska, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Trumbull?

June through September are months without snowfall.

What is the average length of the day in September in Trumbull?

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

How long on average sun shines in September in Trumbull?

The average sunshine in September in Trumbull is 8.5h.

What is the UV index reading in September in Trumbull?

In Trumbull, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Trumbull, NE
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (34.5°F).

  • Average low temperature in September: 57.2°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in September - Trumbull, NE
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.85").

Average wind speed in September - Trumbull, NE
  • Average wind speed in September: 9.8mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).

Average humidity in September - Trumbull, NE
  • Average humidity in September: 65%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is October (61%).

Average rainfall in September - Trumbull, NE
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is May (3.58").
The driest months (with the least rainfall) are January and February (0.71").

Average rainfall days in September - Trumbull, NE
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (16.8 days).
Months with the least rainy days are January and February (3.8 days).

Average snowfall in September - Trumbull, NE
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.07").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in September - Trumbull, NE
  • Average snowfall days in September: 0 days

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

Average daylight in September / Average sunshine in September - Trumbull, NE
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.5h).

Average sunshine days in September - Trumbull, NE
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is June (10.9 days).

Average UV index in September - Trumbull, NE
  • Average UV index in September: 5

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).

Average cloud cover in September - Trumbull, NE
  • Average cloud cover in September: 27

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in September - Trumbull, 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).