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
Weather in September
Temperature
September ushers in a minute temperature change in Chilliwack, with average high-temperatures reducing from August's pleasant 21.9°C (71.4°F) to a comfortable 17.7°C (63.9°F). Throughout the month of September, Chilliwack sees a steady low-temperature average of 6.4°C (43.5°F).Humidity
The average relative humidity in September is 78%.Rainfall
In Chilliwack, in September, it is raining for 14.8 days, with typically 72mm (2.83") of accumulated precipitation. In Chilliwack, during the entire year, the rain falls for 198.9 days and collects up to 1222mm (48.11") of precipitation.Snowfall
In Chilliwack, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:47 pm PDT.
Sunshine
In September, the average sunshine in Chilliwack is 8.2h.UV index
In Chilliwack, Canada, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What are the temperatures in Chilliwack in September?
What is the average humidity in September in Chilliwack?
How much does it rain in Chilliwack in September?
When it does not snow in Chilliwack?
What is the average length of the day in September in Chilliwack?
When are sunrise and sunset in September in Chilliwack?
How long on average sun shines in September in Chilliwack?
How high is the UV index in September in Chilliwack?
Average temperature in September
Chilliwack, Canada
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is August (21.9°C).
The month with the lowest average high temperature is December (1.3°C).
- Average low temperature in September: 6.4°C
The month with the highest average low temperature is August (8.7°C).
The coldest month (with the lowest average low temperature) is December (-3.4°C).
Average pressure in September
Chilliwack, Canada
- Average pressure in September: 1015.9mbar
The month with the highest atmospheric pressure is January (1019.3mbar).
The month with the lowest atmospheric pressure is June (1015.6mbar).
Average wind speed in September
Chilliwack, Canada
- Average wind speed in September: 5.3km/h
The windiest months (with the highest average wind speed) are January and February (6.9km/h).
The calmest month (with the lowest average wind speed) is August (5km/h).
Average humidity in September
Chilliwack, Canada
- Average humidity in September: 78%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Chilliwack, Canada
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is January (173mm).
The driest month (with the least rainfall) is August (31mm).
Average rainfall days in September
Chilliwack, Canada
- Average rainfall days in September: 14.8 days
The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is August (10.2 days).
Average snowfall in September
Chilliwack, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (103mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Chilliwack, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Chilliwack, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Chilliwack, Canada
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is August (18.1 days).
The months with the least sunshine days are March and April (8 days).
Average UV index in September
Chilliwack, Canada
- 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 and November (UV index 1).
Average cloud cover in September
Chilliwack, Canada
- Average cloud cover in September: 45
The month with the most cloud cover is March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Chilliwack, Canada
- Average visibility in September: 7km
The months with the highest visibility are May, July and August (8km).
The months with the lowest visibility are January, February, March, November and December (6km).
Chilliwack, Canada
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