September weather forecastHeggedal, Norway
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Heggedal, Norway, with an average temperature ranging between min 7.2°C (45°F) and max 14.7°C (58.5°F).Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a comfortable 18.9°C (66°F) in August to a moderate 14.7°C (58.5°F). Heggedal observes an average nighttime temperature of 7.2°C (45°F) during September.Humidity
In September, the average relative humidity is 81%.Rainfall
In Heggedal, during September, the rain falls for 10.2 days and regularly aggregates up to 27mm (1.06") of precipitation. In Heggedal, during the entire year, the rain falls for 127.7 days and collects up to 307mm (12.09") of precipitation.Snowfall
June through September are months without snowfall in Heggedal.Daylight
In Heggedal, Norway, the average length of the day in September is 12h and 51min.On the first day of September, sunrise is at 06:15 and sunset at 20:21. On the last day of the month, sunrise is at 07:22 and sunset at 18:53 CEST.
Sunshine
The average sunshine in September in Heggedal is 7.5h.UV index
In Heggedal, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heggedal, Norway
- Average high temperature in September: 14.7°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-2.4°C).
- Average low temperature in September: 7.2°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is February (-7.8°C).
Average pressure in September
Heggedal, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Heggedal, Norway
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in September
Heggedal, Norway
- Average humidity in September: 81%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Heggedal, Norway
- Average rainfall in September: 27mm
The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Heggedal, Norway
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Heggedal, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (73mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Heggedal, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heggedal, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Heggedal, Norway
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (18.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Heggedal, Norway
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Heggedal, Norway
- Average cloud cover in September: 49
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Heggedal, Norway
- Average visibility in September: 8km
The months with the highest visibility are April, May and June (9km).
The month with the lowest visibility is February (6km).
