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 onset corresponds with a shift in the average high-temperature, moving from an enjoyable 16.3°C (61.3°F) in August to a fresh 10.3°C (50.5°F). Throughout September, the temperature falls to an average low of 0.2°C (32.4°F).Humidity
In September, the average relative humidity in Castle Junction is 73%.Rainfall
In Castle Junction, in September, during 14 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, there are 119.4 rainfall days, and 548mm (21.57") of precipitation is accumulated.Snowfall
Months with snowfall are January through July, September through December. September is the first month it typically snows. Throughout September, in the average 2.8 snowfall days, it receives 40mm (1.57") of snow. Throughout the year, there are 155 snowfall days, and 2156mm (84.88") of snow is accumulated.Daylight
The average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:28 pm. On the last day of September, sunrise is at 7:44 am and sunset at 7:22 pm MDT.
Sunshine
In Castle Junction, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 2 in September, converts into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Castle Junction?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
How many hours of daylight does Castle Junction have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in Castle Junction?
Average temperature in September
Castle Junction, Canada
- Average high temperature in September: 10.3°C
The warmest month (with the highest average high temperature) is July (16.6°C).
The month with the lowest average high temperature is December (-9.1°C).
- Average low temperature in September: 0.2°C
The month with the highest average low temperature is July (4°C).
The coldest month (with the lowest average low temperature) is February (-17.8°C).
Average pressure in September
Castle Junction, Canada
- Average pressure in September: 1014.7mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is June (1012mbar).
Average wind speed in September
Castle Junction, Canada
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is November (9.1km/h).
The calmest month (with the lowest average wind speed) is May (7km/h).
Average humidity in September
Castle Junction, Canada
- Average humidity in September: 73%
The months with the highest relative humidity are January, February, March and December (94%).
The months with the lowest relative humidity are July and August (63%).
Average rainfall in September
Castle Junction, Canada
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is June (86mm).
The driest month (with the least rainfall) is February (30mm).
Average rainfall days in September
Castle Junction, Canada
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is June (21.3 days).
The month with the least rainy days is December (2.1 days).
Average snowfall in September
Castle Junction, Canada
- Average snowfall in September: 40mm
The month with the highest snowfall is March (363mm).
The month with the least snowfall is August (0mm).
Average snowfall days in September
Castle Junction, Canada
- Average snowfall days in September: 2.8 days
The month with the highest number of snowfall days is March (24.4 days).
The month with the least snowfall days is August (0 days).
Average daylight in September /
Average sunshine in September
Castle Junction, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Castle Junction, Canada
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is August (15.9 days).
The month with the least sunshine days is April (5.1 days).
Average UV index in September
Castle Junction, Canada
- 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 January, February, March, April, October, November and December (UV index 1).
Average cloud cover in September
Castle Junction, Canada
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Castle Junction, Canada
- Average visibility in September: 9km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and February (4km).
