Trenton (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Trenton.
Climate overview of Trenton
The climate in Trenton, Ontario, Canada, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -1°C (30°F) in January.
The city has a wet climate, receiving around 1050 mm (41 in) of rain/snowfall per year. April is the wettest month.
Trenton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Trenton — and find the best time to visit.
Monthly Temperature in Trenton
In Trenton, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -1°C (30°F) in January.
Nighttime temperatures range from 18°C (64°F) in July to -10°C (14°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Trenton
Trenton experiences significant rain/snowfall throughout the year, averaging 1050 mm (41 in) of precipitation annually. The wettest period in Trenton occurs in April, which receives around 102 mm (4 in) of precipitation. During the driest month, February, Trenton experiences moderate snowfall, totaling 69 mm (2.7 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Trenton Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Trenton
Frequently asked questions about the climate in Trenton
What is the best time to visit Trenton?
June, July, August and September typically offer the most optimal weather in Trenton. In contrast, January, February, March, April, November and December tend to have less optimal conditions.
What temperatures can I expect in Trenton?
Daytime highs range from -1°C (30°F) in January to 27°C (81°F) in July. Nighttime lows range from -10°C (14°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Trenton get?
Annual rainfall is around 1050 mm (41 in). April is the wettest month with 102 mm (4 in), while February is the driest with 69 mm (2.7 in).
Trenton 3-Day Forecast
Trenton (ON) 3-Day Forecast
Trenton on the map
Trenton is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Niagara Falls
27°C (81°F) Montréal28°C (82°F) Ottawa27°C (81°F) Quebec City
26°C (79°F) Toronto26°C (79°F) Calgary24°C (75°F) Vancouver22°C (72°F) Whistler
19°C (66°F) 
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