September weather forecastGjerdrum, Norway
September
Weather in September
September, the first month of the autumn in Gjerdrum, is still a mild month, with an average temperature ranging between max 14.2°C (57.6°F) and min 6.6°C (43.9°F).Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a refreshing 18.3°C (64.9°F) in August to a mild 14.2°C (57.6°F). Throughout September, Gjerdrum witnesses a nighttime temperature average of 6.6°C (43.9°F).Humidity
In September, the average relative humidity is 81%.Rainfall
In September, in Gjerdrum, the rain falls for 11.5 days. Throughout September, 28mm (1.1") of precipitation is accumulated. Throughout the year, in Gjerdrum, there are 138.7 rainfall days, and 344mm (13.54") of precipitation is accumulated.Snowfall
In Gjerdrum, snow does not fall in June through September.Daylight
The average length of the day in September in Gjerdrum is 12h and 52min.On the first day of the month, sunrise is at 06:11 and sunset at 20:19. On the last day of September, sunrise is at 07:20 and sunset at 18:50 CEST.
Sunshine
In Gjerdrum, the average sunshine in September is 7.3h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gjerdrum, Norway
- Average high temperature in September: 14.2°C
The warmest month (with the highest average high temperature) is July (20.1°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in September: 6.6°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is February (-8.1°C).
Average pressure in September
Gjerdrum, Norway
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is April (1014.4mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Gjerdrum, Norway
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is May (9.1km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in September
Gjerdrum, Norway
- Average humidity in September: 81%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Gjerdrum, Norway
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is January (16mm).
Average rainfall days in September
Gjerdrum, Norway
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Gjerdrum, Norway
- Average snowfall in September: 0mm
The month with the highest snowfall is March (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Gjerdrum, Norway
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gjerdrum, Norway
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 7h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average sunshine days in September
Gjerdrum, Norway
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (16.2 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in September
Gjerdrum, Norway
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Gjerdrum, Norway
- Average cloud cover in September: 52
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is June (Cloud cover 48).
Average visibility in September
Gjerdrum, Norway
- Average visibility in September: 8km
The months with the highest visibility are May and June (9km).
The month with the lowest visibility is February (5km).
