Fort Saint John
Canada
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Fort Saint John, Canada

The last month of the spring, May, is a moderate month in Fort Saint John, Canada, with average temperature varying between 4°C (39.2°F) and 15.5°C (59.9°F).

Temperature

In Fort Saint John, the average high-temperature rises, from a frosty 9.1°C (48.4°F) in April, to a mild 15.5°C (59.9°F). In Fort Saint John, in May, the average low-temperature is 4°C (39.2°F).

Humidity

The least humid month in Fort Saint John is May, with an average relative humidity of 41.1%.

Rainfall

In Fort Saint John, during May, the rain falls for 7.9 days and regularly aggregates up to 31.9mm (1.3") of precipitation. In Fort Saint John, during the entire year, the rain falls for 66 days and collects up to 292.4mm (11.5") of precipitation.

Snowfall

Months with snowfall are January through May, August through December. May is the last month it regularly snows. During 1.5 snowfall days, Fort Saint John aggregates 64mm (2.5") of snow. Throughout the year, there are 60.3 snowfall days, and 1896mm (74.6") of snow is accumulated.

Daylight

The average length of the day in Fort Saint John is 16.4h.

Sunshine

The average sunshine in May is 8.6h.

UV index

In May, the average daily maximum UV index in Fort Saint John, Canada, is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Fort Saint John?

In May, the average high-temperature is 15.5°C (59.9°F), and the average low-temperature is 4°C (39.2°F).

What is the least humid month in Fort Saint John?

The least humid month is May, with an average relative humidity of 41.1%.

What is the average humidity in May in Fort Saint John?

In May, the average relative humidity in Fort Saint John, Canada, is 41.1%.

How much does it rain in Fort Saint John in May?

In Fort Saint John, during May, the rain falls for 7.9 days and regularly aggregates up to 31.9mm (1.3") of precipitation.

What is the last month it snows in Fort Saint John?

May is the last month it regularly snows in Fort Saint John, Canada. During 1.5 snowfall days, in May, Fort Saint John aggregates 64mm (2.5") of snow.

How many hours of daylight does Fort Saint John have in May?

In Fort Saint John, Canada, the average length of the day in May is 16.4h.

How many hours of sunshine does Fort Saint John have in May?

In Fort Saint John, the average sunshine in May is 8.6h.

How high is the UV index in May in Fort Saint John?

In Fort Saint John, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Fort Saint John, Canada
  • Average high temperature in May: 15.5°C

The warmest month (with the highest average high temperature) is July (21.7°C).
The month with the lowest average high temperature is January (-8.7°C).

  • Average low temperature in May: 4°C

The month with the highest average low temperature is July (10.7°C).
The coldest month (with the lowest average low temperature) is January (-16.9°C).

Average humidity in May - Fort Saint John, Canada
  • Average humidity in May: 41.1%

The month with the highest relative humidity is November (72.3%).
The month with the lowest relative humidity is May (41.1%).

Average rainfall in May - Fort Saint John, Canada
  • Average rainfall in May: 31.9mm

The wettest month (with the highest rainfall) is July (75.2mm).
Driest months (with the lowest rainfall) are January and February (0.4mm).

Average rainfall days in May - Fort Saint John, Canada
  • Average rainfall days in May: 7.9 days

The month with the highest number of rainy days is July (12.9 days).
The month with the lowest number of rainy days is February (0.4 days).

Average snowfall in May - Fort Saint John, Canada
  • Average snowfall in May: 64mm

The month with the highest snowfall is January (327mm).
Months with the lowest snowfall are June and July (0mm).

Average snowfall days in May - Fort Saint John, Canada
  • Average snowfall days in May: 1.5 days

The month with the highest number of snowfall days is January (10.8 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in May / Average sunshine in May - Fort Saint John, Canada
  • Average daylight in May: 16.4h

The month with the longest days is June (Average daylight: 17.6h).
The month with shortest days is December (Average daylight: 7h).

  • Average sunshine in May: 8.6h

The month with most sunshine is July (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in May - Fort Saint John, Canada
  • Average UV index in May: 5

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, November and December (UV index 0).