September weather forecast
Peterborough, Canada

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Weather in September

The first month of the autumn, September, is still a pleasant month in Peterborough, Canada, with an average temperature varying between 20.5°C (68.9°F) and 11.7°C (53.1°F).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a moderately hot 23.8°C (74.8°F) in August to an agreeable 20.5°C (68.9°F). Peterborough, during the month of September, experiences an average low-temperature of 11.7°C (53.1°F).

Humidity

The average relative humidity in September in Peterborough is 77%.

Rainfall

In Peterborough, during September, the rain falls for 13.8 days and regularly aggregates up to 45mm (1.77") of precipitation. In Peterborough, Canada, during the entire year, the rain falls for 143.9 days and collects up to 609mm (23.98") of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Peterborough, the average length of the day in September is 12h and 30min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:49 pm. On the last day of September, in Peterborough, Canada, sunrise is at 7:10 am and sunset at 6:55 pm EDT.

Sunshine

In Peterborough, the average sunshine in September is 9.4h.

UV index

In Peterborough, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 4 in September leads to these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What is the average September temperature in Peterborough?

In Peterborough, in September, the average high-temperature is 20.5°C (68.9°F), and the average low-temperature is 11.7°C (53.1°F).

What is the average humidity in September in Peterborough?

The average relative humidity in September in Peterborough, Canada, is 77%.

How many days does it rain in September in Peterborough?

In Peterborough, Canada, in September, during 13.8 rainfall days, 45mm (1.77") of precipitation is typically accumulated.

When it does not snow in Peterborough?

June through September are months without snowfall.

Does it snow in Peterborough in September?

In Peterborough, Canada, in September, it doesn't snow. In October, it regularly snows.

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

The average day length in September in Peterborough, Canada, is 12h and 30min.

When is the sunrise / sunset in September in Peterborough?

On the first day of September in Peterborough, sunrise is at 6:37 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:55 pm EDT.

How long on average sun shines in September in Peterborough?

In Peterborough, the average sunshine duration in September is 9.4h.

What is the UV index intensity in September in Peterborough?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Peterborough, Canada

Average temperature in September - Peterborough, Canada
  • Average high temperature in September: 20.5°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 (-3.7°C).

  • Average low temperature in September: 11.7°C

The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-10.3°C).

Average pressure in September
Peterborough, Canada

Average pressure in September - Peterborough, Canada
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is March (1018.2mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).

Average wind speed in September
Peterborough, Canada

Average wind speed in September - Peterborough, Canada
  • Average wind speed in September: 11.7km/h

The windiest month (with the highest average wind speed) is January (16.2km/h).
The calmest month (with the lowest average wind speed) is July (10.6km/h).

Average humidity in September
Peterborough, Canada

Average humidity in September - Peterborough, Canada
  • Average humidity in September: 77%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is April (76%).

Average rainfall in September
Peterborough, Canada

Average rainfall in September - Peterborough, Canada
  • Average rainfall in September: 45mm

The wettest month (with the highest rainfall) is October (69mm).
The driest month (with the least rainfall) is February (31mm).

Average rainfall days in September
Peterborough, Canada

Average rainfall days in September - Peterborough, Canada
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in September
Peterborough, Canada

Average snowfall in September - Peterborough, Canada
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (122mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Peterborough, Canada

Average snowfall days in September - Peterborough, Canada
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Peterborough, Canada

Average daylight in September / Average sunshine in September - Peterborough, Canada
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in September
Peterborough, Canada

Average sunshine days in September - Peterborough, Canada
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is March (17.2 days).
The month with the least sunshine days is August (10.1 days).

Average UV index in September
Peterborough, Canada

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in September
Peterborough, Canada

Average cloud cover in September - Peterborough, Canada
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in September
Peterborough, Canada

Average visibility in September - Peterborough, Canada
  • Average visibility in September: 9km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).

Peterborough, Canada

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