Province in Canada

Ontario Vejr Prognose

Ontario weather: 6°C, overskyet. Hver time forecast, 14-day outlook, UV, air quality and the best time og visit.

☁️ 6°C now🕔 10:04 PM local📅 Best: juni, juli, august and september👥 15.6 million

Ontario weather in oktober

11°
average high · low 3°C
★★★☆☆
ranked #6 of 12 months

A workable month, med trade-offs.

Average high11°C
Average low3°C
Mean6°C
Regnfall69 mm

oktober runs 4°C warmer than the annual average in Ontario.

Compare med september or november.

Vejr map for Ontario

Animated model layers. Pick a layer og load it.

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Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.

Klima in Ontario month by month

Average high, average low and total rainfall, based on three years of reanalysis data.

janfebmaraprmajjunjulaugsepoktnovdecLine: average high · Bars: rainfall
MånedAvg highAvg lowRegnfallRating
januar-13°-22°25 mm★★☆☆☆
februar-9°-20°37 mm★★☆☆☆
marts-4°-17°41 mm★★☆☆☆
april5°-7°58 mm★★☆☆☆
maj15°3°50 mm★★★★☆
juni22°10°71 mm★★★★☆
juli25°14°81 mm★★★★☆
august23°12°80 mm★★★★☆
september20°9°65 mm★★★★☆
oktober11°3°69 mm★★★☆☆
november-0°-5°52 mm★★☆☆☆
december-7°-15°52 mm★★☆☆☆

Klima type: Subarctic. Kilde: Open-Meteo archive (ERA5).

Bedste rejsetid Ontario

Go in juni, juli, august and september. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: februar, november and december - expect the least comfortable mix of heat, cold or rain.

januar★★☆☆☆
februar★★☆☆☆
marts★★☆☆☆
april★★☆☆☆
maj★★★★☆
juni★★★★☆
juli★★★★☆
august★★★★☆
september★★★★☆
oktober★★★☆☆
november★★☆☆☆
december★★☆☆☆

What og pack, what og skip

Pack for the next 7 days
  • A warm mid-layer and gloves for early mornings and evenings
  • A packable rain shell - 3 of the next 7 days carry a real chance of rain
Worth avoiding
  • Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 59 km/h.
  • If your dates are flexible, avoid februar, november and december - historically the least comfortable months here.

How Ontario compares med nearby places

Annual averages, and the difference against Ontario.

PlaceDistanceAvg tempvs hereAnnual rain
Lake Superior425 km3°C+1°C warmer790 mm
Isle Royale National Park429 km6°C+3°C warmer761 mm
Porcupine Mountains Wilderness State Park589 km7°C+5°C warmer902 mm

Se prognosen for Ontario efter tidsinterval

Ontario weather - more answers

Explore Ontario

Every topic we hold for this place, and the same topic for the places around it.

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Frequently asked questions

Where is Ontario?

Ontario is a province in Canada. Its coordinates are 51.2538, -85.3232. It lies in Nordamerika.

What is the weather like in Ontario lige nu?

It is currently 6°C (43°F) med overskyet. Luftfugtighed is 74% and wind is 25 km/h.

When is the best time og visit Ontario?

juni, juli, august and september offer the most comfortable conditions in Ontario, which has a subarctic climate. februar, november and december are usually the hardest months for outdoor plans.

What time zone is Ontario in?

Ontario observes America/Toronto (UTC-04:00). The local time is 10:04 PM.

How many people live in Ontario?

Ontario has a population of approximately 15.6 million.

What is the nearest airport og Ontario?

The closest airports are Toronto Pearson International Airport (YYZ), 944 km away.

What are the top things og do in Ontario?

Popular options include CN Tower and Algonquin Provincial Park.

What places are in Ontario?

Ontario covers 4 places in this atlas, including Ottawa, Toronto, Algonquin Provincial Park and Niagara Falls, Ontario.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (ca-provinces) - coordinates, hierarchy and facts.
Prognose and observationsOpen-Meteo (ECMWF and national models).
Luftkvalitet and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Klima averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
MethodScores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown.

Last updated oktober 4, 2026 at 10:04 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

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