Climate and monthly weather forecast
Guelph, Canada

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The climate of Guelph

Guelph, Canada is distinguished by a humid continental climate, through the Köppen climate classification as Dfb. This indicates that no dry season exists, and while warm summers are typical, cold winters are a standout feature.

Throughout the year, Guelph experiences significant fluctuations in weather. Commencing with temperature, average highest peak stands at 24.8°C (76.6°F) in July and dips to a significant low of -3.8°C (25.2°F) in January. The night weather also mimics these trends. At night, the residents of this Ontario town are subjected to an average high temperature of 15°C (59°F) during July reaching down to -9.4°C (15.1°F) in January.

Observing the precipitation data, rainfall is well distributed across the year, witnessing a peak of 75mm (2.95") in May and a bottom of 41mm (1.61") in September. The number of rainfall days per month follows a similar pattern, adding up to maximum 20.2 days in July and down to a minimum of 6.8 days in February. Snowfall peaks in February with 162mm (6.38") and tends to disappear in the summer, noting no snowfall between June to September.

As for sunlight, the daylight lasts for a high of 15.4 hours in June and diminishes to 9 hours during December and January. Sunlight follows the same pattern with June lavishing the city with a high of 9.4 hours of sunshine which starkly contrasts to the 2.6 hours in December.

The best time to visit Guelph

Tourist should consider seasons and corresponding weather conditions prior to planning their visit. To experience warm and pleasant weather with abundant daylight and sunshine, visiting between June and August would be the optimal choice. The average high temperature ranges from 20.7°C (69.3°F) to 24.8°C (76.6°F), the daylight treatments extend to a maximum of 15.4 hours in June, whereas overall sunshine distribution peaks at 9.4 hours in June.

The worst time to visit Guelph

If cold and snowy weather is not a preference, it would be wise to refrain from visiting the city in winter months: December, January, and February. The city experiences chilling weather with a maximum temperature marking -0.1°C (31.8°F) in December and sliding down to -3.8°C (25.2°F) in January. Snowfall could also prove to be a deterrent with January uncovering a snowfall rating of 140mm (5.51"), February escalating to 162mm (6.38") with 17.5 snowfall days.

Spring weather in Guelph

Spring introduces warmer days in Guelph. March witnesses a transition from winter with a high temperature of 3°C (37.4°F) that increases to 10°C (50°F) and 17.8°C (64°F) in April and May. Evoking a sense of freshness, rainfall is frequent and abundant during this time promoting vibrant green sceneries.

Summer weather in Guelph

From June to August, daytime temperatures peak, ranging between 20.7°C (69.3°F) to 24.8°C (76.6°F). The city is blessed with long days, with up to 15.4 hours of daylight in June. Enjoyment of outdoor activities is supplemented by clear skies and copious amounts of sunshine, reaching 9.4 hours in June.

Autumn weather in Guelph

Autumn in September, October, and November brings a noticeable drop in temperature and daylight. Ranging from 20.7°C (69.3°F) to 5.7°C (42.3°F) throughout the season, sunlit days shrink to 9.7 hours in November but the colors of Fall make for a great spectacle.

Winter weather in Guelph

Characteristic of the Köppen climate classification, winters are notably severe in Guelph with temperatures sinking to -3.8°C (25.2°F) in January. While the winter sun sees a vote of 9 hours in December, the city encounters heavy snowfall amounting to 140mm (5.51") in January and 137mm (5.39") in December along with 18.9 and 17.8 accountable snowfall days respectively.

Weather in January

Looking at the monthly climatological parameters, January in Guelph, Canada harbors frigid temperatures, typically reaching its lows with temperatures varying from -9.4°C (15.1°F) to -3.8°C (25.2°F). Foggy mornings and frosty afternoons are not uncommon, setting the tone for a period of harsh winter. Weather in January »

Weather in February

Transitioning into February, the weather remains bitter but registers a slight increase in the average temperature. Despite this, it is not unusual to find the city of Guelph, Canada painted white, as the snowfall amount often surpasses January. Weather in February »

Weather in March

As Guelph, Canada, welcomes March, there is a notable shift in weather patterns, signaling the end of the chilly and frozen winter. Although this month still embraces the chill, it eventually gives way to warmer spells of weather. Weather in March »

Weather in April

April in Guelph, Canada brings significant changes, with milder temperatures and increased rainfall attributed to the 74mm (2.91") of average monthly precipitation. The advent of spring is now in full swing - snowfall is limited and greenery begins to emerge in the landscape. Weather in April »

Weather in May

May in Guelph, Canada sees a marked improvement in climatic conditions, paving the path for the oncoming summer. It is safe to say that the cold is now a thing of the past, as temperatures are typically mild and pleasant. The rainfall, although slightly higher than the last month, doesn't dampen the spirit of the vibrant month. Weather in May »

Weather in June

As Guelph, Canada enters into June, the onset of summer is clearly felt with climbing temperatures. This month registers the year's highest relative humidity of 80%, suggesting muggy and sometimes uncomfortable conditions. Rainfall is somewhat common, mainly in the form of short, sharp showers that quickly pass. Weather in June »

Weather in July

July is when the summer warmth peaks in Guelph, Canada, with temperatures soaring to approximately 24.8°C (76.6°F) on average. This period is the hottest and one of the driest seasons of the year, with rare and occasional showers. Weather in July »

Weather in August

The integral characteristics of the weather in August in Guelph, Canada essentially mirror those of July. The heat persists, although a slight decrease in temperature signals the imminent end of summer. The relative humidity maintains its level, indicating muggy conditions despite the slight dip in temperatures. Weather in August »

Weather in September

September in Guelph, Canada, marks the onset of autumn, with the weather cooling down from the summer highs. There is a discernible change in the weather pattern as the high heat starts to recede. An average rainfall of 41mm (1.61") is the least precipitation observed all year, showing the significantly drier climate. Weather in September »

Weather in October

October in Guelph, Canada, welcomes the autumn in full swing as the seasonal changes become more pronounced. The temperature dips further, and the need for warmer clothing becomes apparent. Rainfall frequency increases, contributing to the onset of the chillier weather. Weather in October »

Weather in November

November in Guelph, Canada, sees a significant decrease in temperature, signaling the transition period from autumn to winter. Changes in the weather pattern become more evident, with the rainfall making way for the snowfall. The snow begins to set in with an average accumulation spanning 99mm (3.9"). Weather in November »

Weather in December

Accompanied by falling temperatures averaging between -4.7°C (23.5°F) to -0.1°C (31.8°F), December conveys the arrival of winter in Guelph, Canada, in full force. The colder weather comes hand-in-hand with a significant amount of snowfall, turning the landscape into a winter wonderland. Weather in December »

Frequently asked questions

What time of the year is the coldest in Guelph?

January, known for its average high temperature of -3.8°C (25.2°F) and an average low temperature of -9.4°C (15.1°F), is the coldest month in Guelph.

What is the most humid month in Guelph?

With an average relative humidity of 89%, January is the most humid month in Guelph.

How much does it rain in Guelph?

In Guelph, Canada, during the entire year, the rain falls for 172.5 days and collects up to 727mm (28.62") of precipitation.

When does it snow in Guelph?

January through May, October through December are months with snowfall in Guelph, Canada.

How much does it snow in Guelph?

In Guelph, during the entire year, snow falls for 82 days and aggregates up to 703mm (27.68") of snow.

What is the month with the least sunshine in Guelph?

The month with the least sunshine is January, with an average of 2.6h of sunshine.

What are the months with the lowest UV index in Guelph?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

What is the snowiest month in Guelph?

February is the month with the most snowfall. Snow falls for 17.5 days and accumulates 162mm (6.38") of snow.

When is Daylight Saving Time (DST) in Guelph?

On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts in Guelph, Canada, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What are the least humid months in Guelph?

The months with the lowest humidity are April and May, with an average relative humidity of 76%.

What is the wettest month in Guelph?

The month with the most rainfall in Guelph is May, when the rain falls for 18.2 days and typically aggregates up to 75mm (2.95") of precipitation.

What are the months with the highest UV index in Guelph?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Guelph.

When it does not snow in Guelph?

June through September are months without snowfall.

When are the longest days in Guelph?

June has the longest days of the year in Guelph, Canada, with an average of 15h and 24min of daylight.

What month is the hottest in Guelph?

July is the month when Guelph sees the average highest temperatures, with a high of 24.8°C (76.6°F) and a low of 15°C (59°F).

What month has the most sunshine in Guelph?

The month with the most sunshine in Guelph is July, with an average of 10h of sunshine.

What is the driest month in Guelph?

September is the month with the least rainfall. Rain falls for 14.5 days and accumulates 41mm (1.61") of precipitation.

What is the month with the shortest days in Guelph?

December has the shortest days of the year in Guelph, with an average of 9h and 0min of daylight.

Average temperature
Guelph, Canada

Average temperature - Guelph, Canada

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.8°C).

The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.4°C).

Average pressure
Guelph, Canada

Average pressure - Guelph, Canada

The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed
Guelph, Canada

Average wind speed - Guelph, Canada

The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).

Average humidity
Guelph, Canada

Average humidity - Guelph, Canada

The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and May (76%).

Average rainfall
Guelph, Canada

Average rainfall - Guelph, Canada

The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the least rainfall) is September (41mm).

Average rainfall days
Guelph, Canada

Average rainfall days - Guelph, Canada

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (6.8 days).

Average snowfall
Guelph, Canada

Average snowfall - Guelph, Canada

The month with the highest snowfall is February (162mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Guelph, Canada

Average snowfall days - Guelph, Canada

The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Guelph, Canada

Average daylight / Average sunshine - Guelph, Canada

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days
Guelph, Canada

Average sunshine days - Guelph, Canada

The month with the most sunshine days is September (11.5 days).
The months with the least sunshine days are January and February (7.3 days).

Average UV index
Guelph, Canada

Average UV index - Guelph, Canada

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average visibility
Guelph, Canada

Average visibility - Guelph, Canada

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

Guelph, Canada

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