September weather forecastStamford, Canada
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Stamford, Canada, with an average temperature fluctuating between 15.1°C (59.2°F) and 21.6°C (70.9°F).Temperature
The start of September comes with a small reduction in the average high-temperature, subtly receding from a warm 25.1°C (77.2°F) in August to a pleasant 21.6°C (70.9°F). Stamford encounters a steady low-temperature average of 15.1°C (59.2°F) throughout the month of September.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 74%.Rainfall
September is the month with the least rainfall. Rain falls for 13.7 days and accumulates 47mm (1.85") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:41 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:58 pm EDT.
Sunshine
In Stamford, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Stamford, Canada
- Average high temperature in September: 21.6°C
The warmest month (with the highest average high temperature) is July (25.6°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 15.1°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is January (-6.4°C).
Average pressure in September
Stamford, Canada
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Stamford, Canada
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is January (19.8km/h).
The calmest month (with the lowest average wind speed) is July (11.5km/h).
Average humidity in September
Stamford, Canada
- Average humidity in September: 74%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in September
Stamford, Canada
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is July (79mm).
The driest month (with the least rainfall) is September (47mm).
Average rainfall days in September
Stamford, Canada
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in September
Stamford, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (181mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Stamford, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stamford, Canada
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Stamford, Canada
- Average sunshine days in September: 14 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in September
Stamford, Canada
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Stamford, Canada
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Stamford, Canada
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January and February (8km).
