Env. Canada, European, American side by side around Oshawa and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Oshawa, 08 is at its warmest in Jul (average highs near 25°C) and coldest in Feb (lows around -5°C), with roughly 1010 mm of precipitation across the year. Below, compare what Env. Canada, European, American forecast for Oshawa right now, and see exactly where they disagree.
Oshawa climate by month
average daytime high and overnight low across a typical year
Jan
1°
-4°
Feb
3°
-5°
Mar
5°
-2°
Apr
12°
4°
May
18°
9°
Jun
22°
15°
Jul
25°
18°
Aug
24°
17°
Sep
22°
15°
Oct
15°
9°
Nov
8°
2°
Dec
3°
-2°
Common questions
What's the weather in Oshawa today?
On this page we show what Env. Canada, European, American each forecast for Oshawa today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Oshawa today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Env. Canada, European, American for Oshawa and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Oshawa?
No single model is always right. Env. Canada, European, American each run their own physics, so we line all three up: when they agree the Oshawa forecast is reliable, and when they split you should expect surprises. See our tested CA accuracy scoreboard for how the models compare.
What is the warmest month in Oshawa?
Jul is typically the warmest month in Oshawa, with average highs around 25°C.
How cold does Oshawa get?
The coldest month in Oshawa is Feb, when overnight lows average about -5°C.
How much rain does Oshawa get?
Oshawa sees roughly 1010 mm of precipitation a year, with Apr usually the wettest month.
The forecasts Canadians check
Environment Canada runs the national GEM model as open data, so it sits right in the comparison above. The Weather Network and AccuWeather keep theirs closed, so we link you to them.