September weather forecastStamnan, Norway
September
Weather in September
The first month of the autumn, September, is still a cool month in Stamnan, Norway, with an average temperature varying between 4.3°C (39.7°F) and 11.4°C (52.5°F).Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's refreshing 15.3°C (59.5°F) to a fresh 11.4°C (52.5°F). During the nights in September, the temperature in Stamnan averages to an icy 4.3°C (39.7°F).Humidity
In Stamnan, Norway, the average relative humidity in September is 81%.Rainfall
In Stamnan, Norway, in September, it is raining for 14.5 days, with typically 37mm (1.46") of accumulated precipitation. Throughout the year, there are 142.8 rainfall days, and 530mm (20.87") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Stamnan. September is the first month it typically snows. Throughout September, in the average 1 snowfall days, it receives 20mm (0.79") of snow. In Stamnan, during the entire year, snow falls for 99.8 days and aggregates up to 1449mm (57.05") of snow.Daylight
In Stamnan, the average length of the day in September is 12h and 58min.On the first day of September, sunrise is at 06:08 and sunset at 20:31. On the last day of the month, sunrise is at 07:27 and sunset at 18:53 CEST.
Sunshine
The average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 in September interprets into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stamnan, Norway
- Average high temperature in September: 11.4°C
The warmest month (with the highest average high temperature) is July (16°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 4.3°C
The month with the highest average low temperature is July (7.4°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).
Average pressure in September
Stamnan, Norway
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in September
Stamnan, Norway
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is January (14.5km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity in September
Stamnan, Norway
- Average humidity in September: 81%
The month with the highest relative humidity is March (92%).
The month with the lowest relative humidity is June (76%).
Average rainfall in September
Stamnan, Norway
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is August (74mm).
The driest month (with the least rainfall) is November (20mm).
Average rainfall days in September
Stamnan, Norway
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Stamnan, Norway
- Average snowfall in September: 20mm
The month with the highest snowfall is March (249mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Stamnan, Norway
- Average snowfall days in September: 1 days
The month with the highest number of snowfall days is March (16.6 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Stamnan, Norway
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Stamnan, Norway
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Stamnan, Norway
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February and March (UV index 1).
Average cloud cover in September
Stamnan, Norway
- Average cloud cover in September: 51
The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is November (Cloud cover 48).
Average visibility in September
Stamnan, Norway
- Average visibility in September: 8km
The month with the highest visibility is June (9km).
The month with the lowest visibility is April (6km).





