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 is marked by a subtle drop in average high-temperatures, transitioning from a warm 23.5°C (74.3°F) in August to a comfortable 19.5°C (67.1°F). Ayer's Cliff cools down to an average low-temperature of 8.7°C (47.7°F) throughout the month of September.Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 12.2 days. Throughout September, 41mm (1.61") of precipitation is accumulated. In Ayer's Cliff, during the entire year, the rain falls for 143.2 days and collects up to 535mm (21.06") of precipitation.Snowfall
In Ayer's Cliff, snow does not fall in June through September.Daylight
In Ayer's Cliff, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:10 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:29 pm EDT.
Sunshine
In Ayer's Cliff, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Ayer's Cliff is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ayer's Cliff in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Ayer's Cliff have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Ayer's Cliff, Canada
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is July (24.9°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 8.7°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-13.3°C).
Average pressure in September
Ayer's Cliff, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).
Average wind speed in September
Ayer's Cliff, Canada
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is April (12.3km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Ayer's Cliff, Canada
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Ayer's Cliff, Canada
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is June (61mm).
The driest month (with the least rainfall) is February (35mm).
Average rainfall days in September
Ayer's Cliff, Canada
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Ayer's Cliff, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (234mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Ayer's Cliff, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ayer's Cliff, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 2h and 12min).
Average sunshine days in September
Ayer's Cliff, Canada
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in September
Ayer's Cliff, Canada
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Ayer's Cliff, Canada
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Ayer's Cliff, Canada
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July, August, September, October and November (8km).
The months with the lowest visibility are January and February (6km).
