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EC Local Forecast

Forecast - Environment Canada

Observed at: Oshawa Executive Airport
Date: 12:20 AM EDT Tuesday 19 May 2026
Light Rain
Light Rain 		Temp.: 24 °C
Wind: SW 11 km/h
Humidity: 66 %
Dew point: 17 °C
Pressure: 101.5 kPa
Tendency: kPa
Visibility: 16 km 		Sunrise: 5:46
Sunset: 20:39
Normals:
Max 19°C Min 8°C
 Extended Forecast - Environment Canada
  Tue, 19 May
Chance of showers (60%)
Chance of showers
Max: 27°C
 Wed, 20 May
Chance of showers (30%)
Chance of showers
Max: 14°C
 Thu, 21 May
Sunny
Sunny
Max: 15°C
 Fri, 22 May
Cloudy
Cloudy
Max: 15°C
 Sat, 23 May
Chance of showers (40%)
Chance of showers
Max: 12°C
 Sun, 24 May
Chance of showers (40%)
Chance of showers
Max: 18°C
Tonight
Chance of showers (40%)
Chance of showers
Min: 16°C
 Night
Chance of showers (60%)
Chance of showers
Min: 10°C
 Night
Clear
Clear
Min: 4°C
 Night
Cloudy
Cloudy
Min: 6°C
 Night
Chance of showers (40%)
Chance of showers
Min: 10°C
 Night
Chance of showers (40%)
Chance of showers
Min: 11°C

Forecast

Oshawa, ON (Issued: 3:30 PM EDT Monday 18 May 2026)

Tonight
Clear. Increasing cloudiness this evening then 40 percent chance of showers late this evening and overnight. Risk of a thunderstorm late this evening and after midnight. Fog patches developing overnight. Wind southwest 20 km/h gusting to 40 becoming light late this evening. Wind becoming southwest 20 gusting to 40 before morning. Low 16.
Tue, 19 May
Mainly cloudy. 60 percent chance of showers late in the morning and in the afternoon. Risk of a thunderstorm late in the afternoon. Fog patches dissipating in the morning. Wind west 30 km/h gusting to 50. High 27. Humidex 32. UV index 9 or very high.
Night
Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm in the evening. Wind west 30 km/h gusting to 50 becoming light near midnight. Wind becoming north 20 gusting to 40 after midnight. Low 10.
Wed, 20 May
A mix of sun and cloud with 30 percent chance of showers. High 14.
Night
Clear. Low plus 4.
Thu, 21 May
Sunny. High 15.
Night
Cloudy. Low 6.
Fri, 22 May
Cloudy. High 15.
Night
Cloudy with 40 percent chance of showers. Low 10.
Sat, 23 May
Cloudy with 40 percent chance of showers. High 12.
Night
Cloudy with 40 percent chance of showers. Low 11.
Sun, 24 May
Cloudy with 40 percent chance of showers. High 18.

24 Hour Forecast - Oshawa, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
19 May 2026
1 AM 18 Chance of showers. Risk of thunderstorms (40%)  Chance of showers. Risk of thunderstorms 40 S 10
2 AM 18 Chance of showers (30%)  Chance of showers 30 S 10
3 AM 17 Chance of showers (30%)  Chance of showers 30 S 10
4 AM 17 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
5 AM 16 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
6 AM 17 Cloudy (0%)  Cloudy 0 SW 20 gust 40
7 AM 18 Cloudy (0%)  Cloudy 0 SW 20 gust 40
8 AM 19 Cloudy (0%)  Cloudy 0 SW 20 gust 40
9 AM 20 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
10 AM 20 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
11 AM 21 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
12 PM 22 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
1 PM 23 Chance of showers (30%)  Chance of showers 30 SW 20 gust 40
2 PM 24 Chance of showers (30%)  Chance of showers 30 W 30 gust 50
3 PM 25 Chance of showers (30%)  Chance of showers 30 W 30 gust 50
4 PM 26 Chance of showers (30%)  Chance of showers 30 W 30 gust 50
5 PM 27 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 W 30 gust 50
6 PM 26 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 W 30 gust 50
7 PM 24 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 W 30 gust 50
8 PM 23 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 SW 20 gust 40
9 PM 21 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 SW 20 gust 40
10 PM 19 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 SW 20 gust 40
11 PM 17 Chance of showers. Risk of thunderstorms (60%)  Chance of showers. Risk of thunderstorms 60 W 15
20 May 2026
12 AM 17 Chance of showers (40%)  Chance of showers 40 W 15
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada

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