September weather forecastSaint-Hyacinthe, Canada
September
Weather in September
September, the first month of the autumn in Saint-Hyacinthe, is also an agreeable month, with an average temperature fluctuating between 10.2°C (50.4°F) and 20.1°C (68.2°F).Temperature
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's warm 24.2°C (75.6°F) to a pleasant 20.1°C (68.2°F). In Saint-Hyacinthe, the nighttime temperature averages to a fresh 10.2°C (50.4°F) during September.Humidity
In September, the average relative humidity in Saint-Hyacinthe is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 54mm (2.13") of precipitation.Snowfall
June through September are months without snowfall in Saint-Hyacinthe.Daylight
In Saint-Hyacinthe, Canada, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:33 pm EDT.
Sunshine
The average sunshine in September in Saint-Hyacinthe is 8.5h.UV index
The average daily maximum UV index in September in Saint-Hyacinthe is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint-Hyacinthe, Canada
- Average high temperature in September: 20.1°C
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (-5.9°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).
Average pressure in September
Saint-Hyacinthe, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Saint-Hyacinthe, Canada
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is April (13.3km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in September
Saint-Hyacinthe, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Saint-Hyacinthe, Canada
- Average rainfall in September: 54mm
The wettest months (with the highest rainfall) are May and August (82mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in September
Saint-Hyacinthe, Canada
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Saint-Hyacinthe, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (298mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Saint-Hyacinthe, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint-Hyacinthe, Canada
- Average daylight in September: 12h and 30min
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 30min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in September
Saint-Hyacinthe, Canada
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Saint-Hyacinthe, 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 and December (UV index 1).
Average cloud cover in September
Saint-Hyacinthe, Canada
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Saint-Hyacinthe, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March and December (7km).
