September weather forecastThorold, Canada
September
Weather in September
September, the first month of the autumn in Thorold, is also an agreeable month, with an average temperature ranging between max 21.5°C (70.7°F) and min 15.5°C (59.9°F).Temperature
The commencement of September indicates a gentle shift in the average high-temperature, receding from August's moderately hot 24.6°C (76.3°F) to an agreeable 21.5°C (70.7°F). The average temperature during September nights is registered at a moderate 15.5°C (59.9°F).Humidity
With an average relative humidity of 74%, September is the least humid month.Rainfall
September and November are months with the least rain in Thorold when the rain falls for 15.1 days and typically aggregates up to 55mm (2.17") of rain.Snowfall
June through September are months without snowfall in Thorold.Sea temperature
In September, the average sea temperature is 20.8°C (69.4°F).Note: Swimming in 20.8°C (69.4°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
In Thorold, 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 7:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm EDT.
Sunshine
In September, the average sunshine in Thorold is 9.4h.UV index
The average daily maximum UV index in September in Thorold, Canada, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. 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
Average temperature in September
Thorold, Canada
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in September: 15.5°C
The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).
Average pressure in September
Thorold, Canada
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in September
Thorold, Canada
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).
Average humidity in September
Thorold, Canada
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).
Average rainfall in September
Thorold, Canada
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).
Average rainfall days in September
Thorold, Canada
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Thorold, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Thorold, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Thorold, Canada
- Average sea temperature in September: 20.8°C
The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).
Average daylight in September /
Average sunshine in September
Thorold, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Thorold, Canada
- Average sunshine days in September: 13 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).
Average UV index in September
Thorold, 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
Thorold, Canada
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Thorold, Canada
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
