Alliston
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Alliston Weather in December

Alliston in December averages 2°C (36°F) during the day and -7°C (19°F) at night. This is part of the winter season, and quite a bit of snow/rainfall is expected this month.

Rainfall in Alliston in December

You can expect snow/rain on around 14 days based on historical patterns, with 68 mm (2.7 in) average for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Alliston in December

December in Alliston sees highs of 2°C (36°F) and lows of -7°C (19°F) overnight. During December, the winter season is in full swing. Expect a distinctly cold feel throughout the day, not just overnight. With overnight lows of -7°C (19°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. The month is chilly, so ensure you're equipped and dress warmly. Preparation becomes key in these temperatures.

Sunshine in Alliston in December

The city usually sees around 88 hours of sunlight, indicating fewer sunny days.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Alliston. Our weather planner can help you explore destinations with more pleasant weather conditions.

Alliston Temperature in December

Min Temperature
-7°C (19°F)
Max Temperature
2°C (36°F)
Chance of Rain
47%
Precipitation
68 mm (2.7 in)
Rainy days
14 days
Humidity
72% *
Sunshine
88 hours *
Percentage Sunshine
31% *
* Data from: Mississauga, Canada (65 KM, 40 Miles).

Alliston Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Alliston - and find the best time to visit.

Best Places in Canada in December

Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in December →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Alliston in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Rain gear is recommended, you can expect wet weather on multiple days. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Alliston in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    4/10
  • Cycling
    2/10
  • Walking
    2/10
  • Camping
    1/10
  • Outdoor sports
    2/10

Alliston 3-Day Forecast

More climate data for Alliston

Popular in December

Where to go in December - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.