September weather forecastAttachie, Canada
September
Weather in September
The first month of the autumn, September, is also a moderate month in Attachie, Canada, with an average temperature fluctuating between 15.3°C (59.5°F) and 4.7°C (40.5°F).Temperature
September implies a gentle temperature shift, with average high-temperatures reducing from August's agreeable 21.4°C (70.5°F) to a moderate 15.3°C (59.5°F). In September, in Attachie, Canada, the average low-temperature is an icy 4.7°C (40.5°F).Humidity
The average relative humidity in September is 70%.Rainfall
In Attachie, in September, it is raining for 12.6 days, with typically 33mm (1.3") of accumulated precipitation. Throughout the year, there are 103.7 rainfall days, and 370mm (14.57") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Attachie. Throughout September, in the average 1.3 snowfall days, it receives 15mm (0.59") of snow. In Attachie, during the entire year, snow falls for 92.4 days and aggregates up to 928mm (36.54") of snow.Daylight
In September, the average length of the day is 12h and 43min.On the first day of September in Attachie, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:42 pm MST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 2 in September translates into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, 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. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Attachie, Canada
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The month with the lowest average high temperature is December (-9.2°C).
- Average low temperature in September: 4.7°C
The month with the highest average low temperature is July (9.1°C).
The coldest month (with the lowest average low temperature) is December (-16°C).
Average pressure in September
Attachie, Canada
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.6mbar).
Average wind speed in September
Attachie, Canada
- Average wind speed in September: 9.9km/h
The windiest months (with the highest average wind speed) are September and October (9.9km/h).
The calmest month (with the lowest average wind speed) is March (8.5km/h).
Average humidity in September
Attachie, Canada
- Average humidity in September: 70%
The months with the highest relative humidity are January and March (94%).
The month with the lowest relative humidity is May (61%).
Average rainfall in September
Attachie, Canada
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is June (66mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in September
Attachie, Canada
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is December (1.5 days).
Average snowfall in September
Attachie, Canada
- Average snowfall in September: 15mm
The month with the highest snowfall is November (158mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Attachie, Canada
- Average snowfall days in September: 1.3 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Attachie, Canada
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Attachie, Canada
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is April (11 days).
Average UV index in September
Attachie, Canada
- Average UV index in September: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in September
Attachie, Canada
- Average cloud cover in September: 36
The month with the most cloud cover is March (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Attachie, Canada
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February, March and December (5km).
