Gloucester, Ontario Weather by Month and Climate Averages

December is the warmest month (average high -3°C) and January the coldest (average low -13°C).

Gloucester climate at a glance

Climate at a glance

Does it snow in Gloucester?

The snowiest winter on record is 2022–23, with 329 cm.

The most recent measurable snow at the station fell on April 5, 2024.

Gloucester weather by month

Gloucester weather in January

In January, Gloucester averages a high of -5°C and a low of -13°C. The sun is out about 27% of daylight hours. The January record high is 12°C (2018) and the record low is -30°C (2018).

Gloucester weather in December

In December, Gloucester averages a high of -3°C and a low of -11°C. The sun is out about 20% of daylight hours. The December record high is 18°C (2012) and the record low is -28°C (2016).

Sunshine, humidity and wind in Gloucester

July is the sunniest month in Gloucester, with sunshine about 44% of daylight hours. December is the cloudiest, at 20%. Over the year the sun shines about 36% of daylight hours. Gloucester is cloudier than 55% of Canada.

Humidity peaks in December at 78% and is lowest in May at 57%.

Gloucester has about 8 days a year above 32°C. Gloucester is hotter than 84% of Canada.

Gloucester weather records

The hottest temperature on record at the Gloucester station is 37°C, on July 10, 2020. The coldest is -33°C, on February 4, 2023.

The wettest day on record brought 79 mm of rain, on July 24, 2017.

Monthly climate

MonthPrecipRain daysHumiditySunshineRecord highRecord low
January77%27%12°-30°
February71%33%16°-33°
March64%32%27°-23°
April58%36%30°-12°
May57%43%35°-4°
June66%39%35°
July71%44%37°
August76%41%36°
September76%44%33°-1°
October76%36%31°-8°
November74%34%23°-21°
December67 mm1578%20%18°-28°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Gloucester climate questions

What is the hottest month in Gloucester?

December is the warmest month in Gloucester, with an average high of -3°C.

What is the coldest month in Gloucester?

January is the coldest month in Gloucester, with an average low of -13°C.

What is the record high temperature in Gloucester?

The record high at the Gloucester station is 37°C, set on July 10, 2020. The record low is -33°C, on February 4, 2023.

What is the sunniest month in Gloucester?

July is the sunniest month in Gloucester, with sunshine about 44% of daylight hours. December is the cloudiest.

Source: NOAA GHCN-Daily station OTTAWA INT'L (5 km away).

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Normals from NOAA GHCN-Daily station OTTAWA INT'L.