September Weather in Norway, United States

Last updated: June 24, 2025

In September, the average temperature in Norway, United States hovers around 15°C (60°F). However, temperatures can fluctuate significantly, with a minimum dipping to -2°C (29°F) and a maximum soaring up to 33°C (93°F). Expect 90 mm (3.5 in) of precipitation spread over 10 days, and a comfortable average humidity of 78%.

September Temperature in Norway

In September, in Norway, the average temperature is 15°C (60°F). Maximum temperatures can soar to 33°C (93°F), while minimums can dip as low as -2°C (29°F). This variation in temperature makes it essential for travelers to pack for both warm days and chilly nights.

September Weather in Norway: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Norway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Norway, September typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (93°F) and lows dropping to around -2°C (29°F).

Data source: Temperature data for Norway generated using information from the Copernicus Climate Change Service.

September Precipitation in Norway

In Norway in September, the precipitation amount is 90 mm (3.5 in) over the course of 10 days.

September Precipitation Trends in Norway

The chart displays monthly precipitation patterns in Norway, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Norway, September typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Norway

In Norway in September, humidity is 78%. With an average temperature of 15°C (60°F), this humidity feels like a warm, damp embrace that can make outdoor activities a bit uncomfortable, highlighting the importance of staying hydrated and taking breaks in the shade while exploring.

September Average Humidity in Norway

This chart illustrates the average monthly humidity levels in Norway, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Norway is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Norway

In Norway in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Norway.

Maximum UV Index Levels in Norway for September

The chart shows the monthly maximum UV Index (UVI) for Norway in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Norway typically reaches 7, which falls under the high exposure category.

Data source: Norway September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Norway Compares to Other Months

Weather in Norway varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Norway, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Norway, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	33 mm (1.3 inches)	89%	low
February Weather	-9°C (17°F)	49 mm (1.9 inches)	90%	moderate
March Weather	-2°C (28°F)	48 mm (1.9 inches)	87%	moderate
April Weather	4°C (39°F)	90 mm (3.5 inches)	84%	high
May Weather	12°C (55°F)	85 mm (3.3 inches)	77%	very high
June Weather	18°C (65°F)	108 mm (4.3 inches)	75%	very high
July Weather	21°C (70°F)	103 mm (4.1 inches)	74%	very high
August Weather	19°C (67°F)	118 mm (4.6 inches)	73%	very high
September Weather	15°C (60°F)	90 mm (3.5 inches)	78%	high
October Weather	8°C (46°F)	99 mm (3.9 inches)	84%	moderate
November Weather	0°C (32°F)	51 mm (2.0 inches)	89%	moderate
December Weather	-5°C (23°F)	55 mm (2.2 inches)	87%	low