Penticton
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Penticton, Canada

  • Average high temperature in September: 22.2°C

The warmest month (with the highest average high temperature) is July (28.7°C).
The month with the lowest average high temperature is December (1.4°C).

  • Average low temperature in September: 8°C

The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is December (-3.5°C).

  • Average humidity in September: 41.4%

The month with the highest relative humidity is January (71.2%).
The month with the lowest relative humidity is July (35.1%).

  • Average rainfall in September: 24.6mm

The wettest month (with the highest rainfall) is June (46.3mm).
The driest month (with the lowest rainfall) is December (11.4mm).

  • Average rainfall days in September: 7 days

The month with the highest number of rainy days is May (10.7 days).
The month with the lowest number of rainy days is December (5.5 days).

  • Average snowfall in September: 0mm

The month with the highest snowfall is December (211mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (9.6 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.2h).
The month with shortest days is December (Average daylight: 8.2h).

  • Average sunshine in September: 7.1h

The month with most sunshine is July (Average sunshine: 9.3h).
Months with least sunshine are January and December (Average sunshine: 1.1).

  • Average UV index in September: 5

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).

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