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 brings a slight increase in the average high-temperature, progressing from 13°C (55.4°F) in August to a still refreshing 16.7°C (62.1°F). Mount Wilson records an average nighttime low-temperature of 5.1°C (41.2°F) throughout September.Humidity
In Mount Wilson, the average relative humidity in September is 73%.Rainfall
In Mount Wilson, in September, during 9.8 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Mount Wilson, during the entire year, the rain falls for 155.1 days and collects up to 548mm (21.57") of precipitation.Snowfall
Months with snowfall in Mount Wilson, Australia, are June through October. In Mount Wilson, Australia, in September, during 0.5 snowfall days, 14mm (0.55") of snow is typically accumulated. Throughout the year, there are 2.8 snowfall days, and 45mm (1.77") of snow is accumulated.Daylight
The average length of the day in September in Mount Wilson, Australia, is 11h and 53min.On the first day of September, sunrise is at 6:16 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 6:00 pm AEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
May through September, with an average maximum UV index of 3, are months with the lowest UV index in Mount Wilson. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Mount Wilson?
What is the average humidity in September in Mount Wilson?
How much does it rain in Mount Wilson in September?
How many days does it snow in September in Mount Wilson?
What is the average length of the day in September in Mount Wilson?
When are sunrise and sunset in September in Mount Wilson?
How long on average sun shines in September in Mount Wilson?
What is the month with the lowest UV index in Mount Wilson?
What is the UV index intensity in September in Mount Wilson?
Average temperature in September
Mount Wilson, Australia
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is January (27.5°C).
The month with the lowest average high temperature is July (11.7°C).
- Average low temperature in September: 5.1°C
The month with the highest average low temperature is January (14.6°C).
The coldest month (with the lowest average low temperature) is July (2.5°C).
Average pressure in September
Mount Wilson, Australia
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is June (1021.7mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in September
Mount Wilson, Australia
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is August (10.4km/h).
The calmest month (with the lowest average wind speed) is April (7.4km/h).
Average humidity in September
Mount Wilson, Australia
- Average humidity in September: 73%
The month with the highest relative humidity is June (85%).
The month with the lowest relative humidity is December (68%).
Average rainfall in September
Mount Wilson, Australia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is February (91mm).
The driest month (with the least rainfall) is May (20mm).
Average rainfall days in September
Mount Wilson, Australia
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is May (8.5 days).
Average snowfall in September
Mount Wilson, Australia
- Average snowfall in September: 14mm
The month with the highest snowfall is August (19mm).
The months with the least snowfall are January, February, March, April, May, November and December (0mm).
Average snowfall days in September
Mount Wilson, Australia
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is August (1.2 days).
The months with the least snowfall days are January, February, March, April, November and December (0 days).
Average daylight in September /
Average sunshine in September
Mount Wilson, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is December (Average sunshine: 10h and 0min).
The month with the least sunshine is June (Average sunshine: 5h and 30min).
Average sunshine days in September
Mount Wilson, Australia
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is March (11 days).
Average UV index in September
Mount Wilson, Australia
- Average UV index in September: 3
The months with the highest UV index are January and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 3).
Average cloud cover in September
Mount Wilson, Australia
- Average cloud cover in September: 35
The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in September
Mount Wilson, Australia
- Average visibility in September: 8km
The months with the highest visibility are January, February, August, September, October, November and December (8km).
The months with the lowest visibility are March, April, May, June and July (7km).
