Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from a moderate 13.8°C (56.8°F) in August to a chilly 9.5°C (49.1°F). An average low-temperature of 4.9°C (40.8°F) characterizes Gratangsbotn's September nights.Humidity
In September, the average relative humidity in Gratangsbotn is 80%.Rainfall
In Gratangsbotn, during September, the rain falls for 16.3 days and regularly aggregates up to 61mm (2.4") of precipitation. In Gratangsbotn, during the entire year, the rain falls for 145.3 days and collects up to 845mm (33.27") of precipitation.Snowfall
Months with snowfall in Gratangsbotn are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 3mm (0.12") of snow. In Gratangsbotn, during the entire year, snow falls for 97.8 days and aggregates up to 2575mm (101.38") of snow.Daylight
The average length of the day in September in Gratangsbotn, Norway, is 13h and 16min.On the first day of September in Gratangsbotn, sunrise is at 05:14 and sunset at 20:23. On the last day of the month, sunrise is at 07:01 and sunset at 18:16 CEST.
Sunshine
The average sunshine in September in Gratangsbotn is 6.7h.UV index
In Gratangsbotn, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 2 in September interprets into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Gratangsbotn?
What is the average humidity in September in Gratangsbotn?
How many days does it rain in September in Gratangsbotn?
When does it start snowing in Gratangsbotn?
What is the average length of the day in September in Gratangsbotn?
When are sunrise and sunset in September in Gratangsbotn?
How long on average sun shines in September in Gratangsbotn?
How high is the UV index in September in Gratangsbotn?
Average temperature in September
Gratangsbotn, Norway
- Average high temperature in September: 9.5°C
The warmest month (with the highest average high temperature) is July (14.7°C).
The month with the lowest average high temperature is January (-5.7°C).
- Average low temperature in September: 4.9°C
The month with the highest average low temperature is July (8.3°C).
The coldest month (with the lowest average low temperature) is February (-11.3°C).
Average pressure in September
Gratangsbotn, Norway
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1001.8mbar).
Average wind speed in September
Gratangsbotn, Norway
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is January (14.2km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in September
Gratangsbotn, Norway
- Average humidity in September: 80%
The month with the highest relative humidity is April (91%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Gratangsbotn, Norway
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is March (101mm).
The driest month (with the least rainfall) is August (51mm).
Average rainfall days in September
Gratangsbotn, Norway
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
Gratangsbotn, Norway
- Average snowfall in September: 3mm
The month with the highest snowfall is March (590mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Gratangsbotn, Norway
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is March (18.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Gratangsbotn, Norway
- Average daylight in September: 13h and 2min
The month with the longest days is August (Average daylight: 17h and 36min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).
Average sunshine days in September
Gratangsbotn, Norway
- Average sunshine days in September: 11.7 days
The month with the most sunshine days is January (15.2 days).
The month with the least sunshine days is April (9.2 days).
Average UV index in September
Gratangsbotn, 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 March, April, October and November (UV index 1).
Average cloud cover in September
Gratangsbotn, Norway
- Average cloud cover in September: 56
The month with the most cloud cover is March (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 50).
Average visibility in September
Gratangsbotn, Norway
- Average visibility in September: 9km
The months with the highest visibility are July, August and September (9km).
The months with the lowest visibility are March, April and May (7km).
