September weather forecast
Norway, IA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Norway, Iowa, with an average temperature fluctuating between 55.2°F (12.9°C) and 74.3°F (23.5°C).

Temperature

The advent of September sees the average high-temperature at a still warm 74.3°F (23.5°C), subtly shifted from August's 79.5°F (26.4°C). Throughout September, Norway registers a consistent average low-temperature of 55.2°F (12.9°C).

Humidity

In September, the average relative humidity in Norway is 77%.

Rainfall

In Norway, during September, the rain falls for 10.9 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Norway, during the entire year, the rain falls for 120.7 days and collects up to 18.31" (465mm) of precipitation.

Snowfall

In Norway, snow does not fall in May through September.

Daylight

In Norway, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:34 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:50 pm CDT.

Sunshine

In September, the average sunshine in Norway is 9.3h.

UV index

The average daily maximum UV index in September in Norway is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the average September temperature in Norway?

In Norway, 74.3°F (23.5°C) is the average high-temperature and 55.2°F (12.9°C) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in September in Norway?

In September, the average relative humidity is 77%.

How many days does it rain in September in Norway?

In September, in Norway, the rain falls for 10.9 days. Throughout September, 1.73" (44mm) of precipitation is accumulated.

When it does not snow in Norway?

In Norway, snow does not fall in May through September.

Does it snow in Norway in September?

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

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

In September, the average day length in Norway is 12h and 28min.

When are sunrise and sunset in September in Norway?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:40 pm. On the last day of the month, in Norway, sunrise is at 7:04 am and sunset at 6:50 pm CDT.

How many hours of sunshine does Norway have in September?

The average sunshine duration in September is 9.3h.

What is the UV index reading in September in Norway?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Norway, IA

Average temperature in September - Norway, IA
  • Average high temperature in September: 74.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).

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Average pressure in September
Norway, IA

Average pressure in September - Norway, IA
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in September
Norway, IA

Average wind speed in September - Norway, IA
  • Average wind speed in September: 8mph

The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in September
Norway, IA

Average humidity in September - Norway, IA
  • Average humidity in September: 77%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in September
Norway, IA

Average rainfall in September - Norway, IA
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is May (3.07").
The driest months (with the least rainfall) are January and February (0.63").

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Average rainfall days in September
Norway, IA

Average rainfall days in September - Norway, IA
  • Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (3 days).

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Average snowfall in September
Norway, IA

Average snowfall in September - Norway, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Norway, IA

Average snowfall days in September - Norway, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Norway, IA

Average daylight in September / Average sunshine in September - Norway, IA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in September
Norway, IA

Average sunshine days in September - Norway, IA
  • Average sunshine days in September: 18.2 days

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is June (11.8 days).

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Average UV index in September
Norway, IA

Average UV index in September - Norway, IA
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Norway, IA

Average cloud cover in September - Norway, IA
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in September
Norway, IA

Average visibility in September - Norway, IA
  • Average visibility in September: 6mi

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

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Norway, Iowa, USA

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