Winnipeg
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Winnipeg, Canada

The first month of the autumn, September, is still a comfortable month in Winnipeg, Canada, with average temperature varying between 6.4°C (43.5°F) and 19°C (66.2°F).

Temperature

In Winnipeg, the average high-temperature drops, from a warm 25.4°C (77.7°F) in August, to an enjoyable 19°C (66.2°F). In Winnipeg, the average low-temperature is 6.4°C (43.5°F).

Humidity

In September, the average relative humidity is 54.8%.

Rainfall

In Winnipeg, during September, the rain falls for 10.3 days and regularly aggregates up to 45.5mm (1.8") of precipitation. Throughout the year, there are 78.3 rainfall days, and 419mm (16.5") of precipitation is accumulated.

Snowfall

Months with snowfall in Winnipeg, Canada, are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 3mm (0.1") of snow. Throughout the year, in Winnipeg, there are 53.5 snowfall days, and 1139mm (44.8") of snow is accumulated.

Daylight

The average length of the day is 12.6h.

Sunshine

In Winnipeg, the average sunshine is 6.3h.

UV index

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in September in Winnipeg?

In Winnipeg, Canada, in September, the average high-temperature is 19°C (66.2°F), and the average low-temperature is 6.4°C (43.5°F).

What is the average humidity in September in Winnipeg?

In September, the average relative humidity in Winnipeg, Canada, is 54.8%.

How much does it rain in Winnipeg in September?

In September, in Winnipeg, Canada, the rain falls for 10.3 days. Throughout September, 45.5mm (1.8") of precipitation is accumulated.

When does it start to snow in Winnipeg?

September is the first month it typically snows in Winnipeg, Canada. Throughout September, in the average 0.1 snowfall days, it receives 3mm (0.1") of snow.

What is the average length of the day in September in Winnipeg?

In September, the average length of the day in Winnipeg is 12.6h.

How many hours of sunshine does Winnipeg have in September?

In September, the average sunshine in Winnipeg, Canada, is 6.3h.

What is the UV index reading in September in Winnipeg?

The average daily maximum UV index in September in Winnipeg, Canada, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Winnipeg, Canada
  • Average high temperature in September: 19°C

The warmest month (with the highest average high temperature) is July (25.9°C).
The month with the lowest average high temperature is January (-11.3°C).

  • Average low temperature in September: 6.4°C

The month with the highest average low temperature is July (13.5°C).
The coldest month (with the lowest average low temperature) is January (-21.4°C).

Average humidity in September - Winnipeg, Canada
  • Average humidity in September: 54.8%

The month with the highest relative humidity is December (75.1%).
The month with the lowest relative humidity is May (46.7%).

Average rainfall in September - Winnipeg, Canada
  • Average rainfall in September: 45.5mm

The wettest month (with the highest rainfall) is June (90mm).
The driest month (with the lowest rainfall) is January (0.2mm).

Average rainfall days in September - Winnipeg, Canada
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is June (13.3 days).
The month with the lowest number of rainy days is January (0.7 days).

Average snowfall in September - Winnipeg, Canada
  • Average snowfall in September: 3mm

The month with the highest snowfall is January (237mm).
Months with the lowest snowfall are June, July and August (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 (12.4 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in September / Average sunshine in September - Winnipeg, Canada
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.3h).
The month with shortest days is December (Average daylight: 8.2h).

  • Average sunshine in September: 6.3h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is November (Average sunshine: 3.1h).

Average UV index in September - Winnipeg, Canada
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).