September weather forecastWinnipeg, Canada
September
Weather in September
The arrival of September in Winnipeg brings along the first signs of fall with a noticeable decrease in temperature. Rainfall increases, and days become shorter with the reducing daylight hours. Despite the changes, September experiences a maximum UV index of 4, indicating persistent strong sunshine. From the weather patterns, it is clear that Winnipeg's cooling has commenced, with temperatures ranging between 10°C (50°F) and 19.5°C (67.1°F).Temperature
In September, the average high-temperature decreases from a moderately hot 25.6°C (78.1°F) in August to a refreshing 19.5°C (67.1°F). Throughout the nights in September, an average low-temperature of 10°C (50°F) is noted.Humidity
In Winnipeg, the average relative humidity in September is 64%.Rainfall
In September, the rain falls for 10.2 days. Throughout September, 43mm (1.69") of precipitation is accumulated. Throughout the year, there are 101.8 rainfall days, and 395mm (15.55") of precipitation is accumulated.Snowfall
In Winnipeg, snow does not fall in June through September.Daylight
In Winnipeg, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 6:45 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index in Winnipeg is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Winnipeg, Canada
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (-11.3°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is July (14.8°C).
The coldest month (with the lowest average low temperature) is January (-18.5°C).
Average pressure in September
Winnipeg, Canada
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is February (1020.9mbar).
The month with the lowest atmospheric pressure is June (1010.5mbar).
Average wind speed in September
Winnipeg, Canada
- Average wind speed in September: 14.8km/h
The windiest month (with the highest average wind speed) is October (16km/h).
The calmest month (with the lowest average wind speed) is August (12.8km/h).
Average humidity in September
Winnipeg, Canada
- Average humidity in September: 64%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are May and August (63%).
Average rainfall in September
Winnipeg, Canada
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is June (70mm).
The driest month (with the least rainfall) is February (10mm).
Average rainfall days in September
Winnipeg, Canada
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (1.2 days).
Average snowfall in September
Winnipeg, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is November (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Winnipeg, Canada
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Winnipeg, Canada
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in September: 8h and 24min
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 30min).
Average sunshine days in September
Winnipeg, Canada
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in September
Winnipeg, Canada
- Average UV index in September: 4
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, October, November and December (UV index 1).
Average cloud cover in September
Winnipeg, Canada
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Winnipeg, Canada
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is January (7km).
