September weather forecast
Merriman, NE

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Weather in September

September marks the beginning of fall in Merriman, Nebraska, with a noticeable drop in temperatures to an average high of 76.1°F (24.5°C). The shades of summer start to fade away while landscapes start to get painted with autumn colors. As the city transitions to cooler temperatures, the vibrant hues of fall foliage adorn the streets of Merriman. Outdoor activities become more enjoyable compared with the hot summer months. Clouds start to parade the sky more frequently, hinting at the upcoming rainy autumn season.

Temperature

In Merriman, entering September brings a subtle temperature decrement, reducing from August's warm 84.7°F (29.3°C) to a still moderately hot 76.1°F (24.5°C). Merriman witnesses an average low-temperature of 55.8°F (13.2°C) throughout the month of September.

Humidity

The months with the lowest humidity in Merriman are August and September, with an average relative humidity of 51%.

Rainfall

In Merriman, Nebraska, in September, during 9.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Merriman, during the entire year, the rain falls for 108 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Merriman. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 47.3 snowfall days, and 19.76" (502mm) of snow is accumulated.

Daylight

The average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:12 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:29 pm MDT.

Sunshine

In Merriman, the average sunshine in September is 10.1h.

UV index

In Merriman, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 4 during September translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Stay sun-safe with clothing that is both closely woven and worn loosely. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What is the temperature in September in Merriman?

The high-temperature, in September, in Merriman, is 76.1°F (24.5°C), while the low-temperature averages to 55.8°F (13.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 86°F (30°C).

What is the least humid month in Merriman?

August and September, with an average relative humidity of 51%, are the least humid months.

What is the average humidity in September in Merriman?

In September, the average relative humidity in Merriman, Nebraska, is 51%.

How much does it rain in Merriman in September?

In Merriman, Nebraska, during September, the rain falls for 9.5 days and regularly aggregates up to 1.22" (31mm) of precipitation.

When does it start snowing in Merriman?

September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow.

How many hours of daylight does Merriman have in September?

In September, the average day length in Merriman is 12h and 29min.

What time are sunrise and sunset in September in Merriman?

On the first day of September, sunrise is at 6:12 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:29 pm MDT.

How many hours of sunshine does Merriman have in September?

The average sunshine duration in September in Merriman is 10.1h.

How high is the UV index in September in Merriman?

In September, the average daily maximum UV index in Merriman, Nebraska, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Merriman, NE

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

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in September: 55.8°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 (18.3°F).

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Average pressure in September
Merriman, NE

Average pressure in September - Merriman, NE
  • Average pressure in September: 29.94"Hg

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

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Average wind speed in September
Merriman, NE

Average wind speed in September - Merriman, NE
  • Average wind speed in September: 11.5mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).

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Average humidity in September
Merriman, NE

Average humidity in September - Merriman, NE
  • Average humidity in September: 51%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in September
Merriman, NE

Average rainfall in September - Merriman, NE
  • Average rainfall in September: 1.22"

The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in September
Merriman, NE

Average rainfall days in September - Merriman, NE
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is December (2.8 days).

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Average snowfall in September
Merriman, NE

Average snowfall in September - Merriman, NE
  • Average snowfall in September: 0.04"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Merriman, NE

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

The month with the highest number of snowfall days is February (10.3 days).
The 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
Merriman, NE

Average daylight in September / Average sunshine in September - Merriman, NE
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

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Average sunshine days in September
Merriman, NE

Average sunshine days in September - Merriman, NE
  • Average sunshine days in September: 18.4 days

The month with the most sunshine days is December (21 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in September
Merriman, NE

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Merriman, NE

Average cloud cover in September - Merriman, NE
  • Average cloud cover in September: 19

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in September
Merriman, NE

Average visibility in September - Merriman, NE
  • 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).

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Merriman, Nebraska, USA

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