The best times to visit Trenton for ideal weather are

May 14th to October 7th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Trenton Travel Info

Weather in Trenton


Average temperatures in Trenton vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 26th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Trenton, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 82°F (27.8°C) with temperatures rarely dropping below 60.6°F (15.9°C) at night.

Trenton Temperatures (Fahrenheit)


Trenton Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Trenton Perceived Temperature (F)


Trenton Perceived Temperature (C)



Average Trenton Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 30.9 21.4 12.7
Feb 30.7 21.2 12.1
Mar 42.2 31.8 22.4
Apr 56.6 44.7 34.4
May 69.5 57.5 46.1
Jun 76.7 65.5 55.4
Jul 80.8 70.2 59.7
Aug 79.1 68.6 57.9
Sep 73.2 61.6 51
Oct 60.5 50.1 41
Nov 48.3 38.7 29.6
Dec 36.7 28.7 21

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -0.6 -5.9 -10.7
Feb -0.7 -6 -11.1
Mar 5.7 -0.1 -5.3
Apr 13.7 7.1 1.3
May 20.8 14.2 7.8
Jun 24.8 18.6 13
Jul 27.1 21.2 15.4
Aug 26.2 20.3 14.4
Sep 22.9 16.4 10.6
Oct 15.8 10.1 5
Nov 9.1 3.7 -1.3
Dec 2.6 -1.8 -6.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Trenton are March, May, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late August to early September. For example, on the week of August 27th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid August with an average of 2 days of significant precipitation the week of August 6th.

When can you find snow in Trenton? Weather stations report large amounts of snow likely to be deepest around February, especially close to early February. The best time to ski (if at all) in Trenton is often around around December 17th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Trenton.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Trenton (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 26% 4.3 2.8
Feb 24% 6.1 2.6
Mar 18% 3.6 2.1
Apr 23% 0.5 3.3
May 19% 0 3
Jun 25% 0 3.9
Jul 21% 0 3.2
Aug 20% 0 3
Sep 22% 0 3.5
Oct 29% 0 3.4
Nov 21% 1.7 2.6
Dec 26% 3.4 3.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 26 10.9 7.1
Feb 24 15.5 6.6
Mar 18 9.1 5.3
Apr 23 1.3 8.4
May 19 0 7.6
Jun 25 0 9.9
Jul 21 0 8.1
Aug 20 0 7.6
Sep 22 0 8.9
Oct 29 0 8.6
Nov 21 4.3 6.6
Dec 26 8.6 9.4


Humidity and Wind

Trenton has some very humid months, with other comfortably humid months. The least humid month is March (54.4% relative humidity), and the most humid month is September (70.7%).

Wind in Trenton is usually calm. The windiest month is April, followed by February and January. April’s average wind speed of around 7.8 knots (9 MPH or 14.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late January and early February where average top sustained speeds reach 15.5 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Trenton.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 7.5 Gentle breeze 14.9 Significant breeze
Feb 7.6 Gentle breeze 14.5 Significant breeze
Mar 7.4 Gentle breeze 13.8 Significant breeze
Apr 7.8 Gentle breeze 14.6 Significant breeze
May 6.5 Light breeze 12.8 Significant breeze
Jun 6 Light breeze 12.3 Significant breeze
Jul 5.9 Light breeze 12 Significant breeze
Aug 5.5 Light breeze 11.5 Significant breeze
Sep 5.4 Light breeze 11.3 Significant breeze
Oct 6.5 Light breeze 13.2 Significant breeze
Nov 6.8 Light breeze 13.3 Significant breeze
Dec 7.3 Gentle breeze 13.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 61.7%
Feb 59.6%
Mar 54.4%
Apr 55.7%
May 58.3%
Jun 65.2%
Jul 64.2%
Aug 68.5%
Sep 70.7%
Oct 69.6%
Nov 66.2%
Dec 69.1%


Is it Safe to Travel to Trenton?



The Busiest and Least Crowded Months

The busiest month for tourism in Trenton, ON, Canada is August, followed by July and September. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Trenton in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 36.6 in December means 36.6% of the tourists vs. August.



Overall Trenton Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 74.4°F (23.6°C) and 33.4°F (0.8°C) with far warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 6 to 7 days of precipitation per month. June – August is the busiest season for tourism in Trenton, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 78.1°F (25.6°C) and 42°F (5.6°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 9 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Winter (December through February)

Weather is far too cold this time of year in Trenton to be enjoyable for warm weather travelers. The average high during this season is between 39.2°F (4°C) and 26.9°F (-2.8°C). On average, it rains or snows a fair amount: 7 to 8 times per month. These times of year are the slowest with tourists.


Best Times to TravelCanada › Trenton, ON, Canada