EC Local Forecast


Forecast - Environment Canada

Observed at: Oshawa Executive Airport
Date: 12:00 AM EDT Friday 4 September 2026
Mostly Cloudy
Mostly Cloudy
Temp.: 18 °C
Wind: NW 5 km/h
Humidity: 84 %
Dew point: 15 °C
Pressure: 101.4 kPa
Tendency: kPa
Visibility: 16 km
Sunrise: 6:42
Sunset: 19:46
Normals:
Max 22°C Min 12°C
 Extended Forecast - Environment Canada
  Fri, 4 Sep
Chance of showers (30%)
Chance of showers
Max: 25°C
Sat, 5 Sep
Sunny
Sunny
Max: 24°C
Sun, 6 Sep
Sunny
Sunny
Max: 25°C
Mon, 7 Sep
Sunny
Sunny
Max: 25°C
Tue, 8 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 22°C
Wed, 9 Sep
Cloudy
Cloudy
Max: 23°C
Tonight
Mainly cloudy
Mainly cloudy
Min: 15°C
Night
Chance of showers (30%)
Chance of showers
Min: 14°C
Night
Clear
Clear
Min: 12°C
Night
Clear
Clear
Min: 12°C
Night
Cloudy periods
Cloudy periods
Min: 13°C
Night
Cloudy periods
Cloudy periods
Min: 14°C

Forecast

Oshawa, ON (Issued: 3:30 PM EDT Thursday 3 September 2026)

Tonight
Partly cloudy. Becoming cloudy this evening. Wind north 20 km/h gusting to 40 becoming light this evening. Low 15.
Fri, 4 Sep
A mix of sun and cloud. 30 percent chance of showers in the afternoon. High 25. Humidex 30. UV index 7 or high.
Night
Partly cloudy. 30 percent chance of showers in the evening. Low 14.
Sat, 5 Sep
Sunny. High 24.
Night
Clear. Low 12.
Sun, 6 Sep
Sunny. High 25.
Night
Clear. Low 12.
Mon, 7 Sep
Sunny. High 25.
Night
Cloudy periods. Low 13.
Tue, 8 Sep
A mix of sun and cloud. High 22.
Night
Cloudy periods. Low 14.
Wed, 9 Sep
Cloudy. High 23.

24 Hour Forecast - Oshawa, ON

Date/Time Temp.
(°C)

Weather Conditions

LOP †
Wind
(km/h)
4 September 2026
1 AM 17 Cloudy (10%)  Cloudy 10 NW 10
2 AM 16 Cloudy (10%)  Cloudy 10 N 10
3 AM 16 Cloudy (10%)  Cloudy 10 N 10
4 AM 15 Cloudy (10%)  Cloudy 10 N 10
5 AM 15 Cloudy (10%)  Cloudy 10 N 10
6 AM 16 Partly cloudy (10%)  Partly cloudy 10 N 10
7 AM 16 A mix of sun and cloud (10%)  A mix of sun and cloud 10 N 10
8 AM 17 A mix of sun and cloud (10%)  A mix of sun and cloud 10 VR 5
9 AM 19 A mix of sun and cloud (10%)  A mix of sun and cloud 10 VR 5
10 AM 20 A mix of sun and cloud (10%)  A mix of sun and cloud 10 VR 5
11 AM 22 Chance of showers (30%)  Chance of showers 30 SW 10
12 PM 23 Chance of showers (30%)  Chance of showers 30 SW 10
1 PM 24 Chance of showers (30%)  Chance of showers 30 SW 10
2 PM 25 Chance of showers (30%)  Chance of showers 30 SW 10
3 PM 25 Chance of showers (30%)  Chance of showers 30 SW 10
4 PM 25 Chance of showers (30%)  Chance of showers 30 SW 10
5 PM 25 Chance of showers (30%)  Chance of showers 30 NW 10
6 PM 24 Chance of showers (30%)  Chance of showers 30 NW 10
7 PM 22 Chance of showers (30%)  Chance of showers 30 NW 10
8 PM 21 Chance of showers (30%)  Chance of showers 30 N 10
9 PM 20 Chance of showers (30%)  Chance of showers 30 N 10
10 PM 20 Chance of showers (30%)  Chance of showers 30 N 10
11 PM 19 Chance of showers (30%)  Chance of showers 30 N 10
5 September 2026
12 AM 18 A few clouds (20%)  A few clouds 20 N 10
 
† 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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