Sarnia Weather Conditions

Current Temperature Level

moderate rain
20°C
26°C9°C
Cool

Rain

Feels Like 17°C

Chances of Rain88%

Good

25AQI

Humidity

87%

Nowmoderate rain20°88%7 AMmoderate rain at times19°84%8 AMmoderate rain20°88%9 AMmoderate rain at times21°82%10 AMmoderate rain at times22°84%11 AMmoderate rain at times22°78%12 PMmoderate rain at times24°72%1 PMpatchy rain possible25°72%2 PMpatchy rain possible26°70%3 PMpatchy rain possible26°73%4 PMovercast9°27%5 PMovercast9°27%6 PMovercast9°27%7 PMovercast9°27%8 PMovercast9°28%9 PMovercast10°29%10 PMovercast10°29%11 PMovercast10°29%12 AMovercast10°30%1 AMovercast10°30%2 AMovercast10°31%3 AMovercast10°31%4 AMovercast10°31%5 AMovercast10°32%
.

Moderate rainfall is likely.

Last Updated: 2026-08-17 06:00 (Local Time)

Sarnia Weather Parameters

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Sarnia 10-Days Weather Forecast

See Monthly
Today17 Aug.


Overcast

Overcast

Fully overcast skies with a high of 18 °C. Humidity will be 83%, and winds at 43.6 km/h.


temperature icon

26°C  /  9°C

temperature iconHumi.83 %
temperature iconPrec.103.43 mm


Sunrise icon

Sunrise

06:37 AM

13hrs 52min

Sunset icon

Sunset

08:29 PM
Temperature (°C)
.
12 AMTime11 PM

Time

Condition

Temperature IconTemp

Humidity IconHumidity

UV IconUV

Wind IconWind Speed & Dir.

12 AM

RainRain

23 °C

93 %

0

17.6 kmph /  WNW

Feels Like IconFeels 24 °C

Temperature IconCover 89 %

Visibility IconVisibility 10 km

1 AM

RainRain

23 °C

86 %

0

16.6 kmph /  NW

Feels Like IconFeels 23 °C

Temperature IconCover 84 %

Visibility IconVisibility 10 km

2 AM

RainRain

22 °C

89 %

0

23 kmph /  NW

Feels Like IconFeels 21 °C

Temperature IconCover 81 %

Visibility IconVisibility 10 km

3 AM

RainRain

22 °C

93 %

0

24.1 kmph /  NW

Feels Like IconFeels 21 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

4 AM

RainRain

21 °C

86 %

0

25.9 kmph /  NW

Feels Like IconFeels 20 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

5 AM

RainRain

21 °C

86 %

0

26.6 kmph /  NW

Feels Like IconFeels 18 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

6 AM

RainRain

20 °C

87 %

0

28.1 kmph /  NW

Feels Like IconFeels 17 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

7 AM

RainRain

19 °C

87 %

0

30.2 kmph /  NW

Feels Like IconFeels 16 °C

Temperature IconCover 77 %

Visibility IconVisibility 10 km

8 AM

RainRain

20 °C

87 %

0.4

30.6 kmph /  NW

Feels Like IconFeels 17 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

9 AM

RainRain

21 °C

86 %

1.2

31.7 kmph /  NW

Feels Like IconFeels 17 °C

Temperature IconCover 74 %

Visibility IconVisibility 10 km

10 AM

RainRain

22 °C

82 %

2.5

34.6 kmph /  NW

Feels Like IconFeels 18 °C

Temperature IconCover 89 %

Visibility IconVisibility 10 km

11 AM

RainRain

22 °C

79 %

4.1

34.6 kmph /  NW

Feels Like IconFeels 19 °C

Temperature IconCover 69 %

Visibility IconVisibility 10 km

12 PM

RainRain

24 °C

72 %

5.7

34.6 kmph /  NW

Feels Like IconFeels 20 °C

Temperature IconCover 60 %

Visibility IconVisibility 10 km

1 PM

Patchy rain nearbyPatchy rain nearby

25 °C

61 %

6.2

34.9 kmph /  NW

Feels Like IconFeels 21 °C

Temperature IconCover 87 %

Visibility IconVisibility 10 km

2 PM

Patchy rain nearbyPatchy rain nearby

26 °C

61 %

6

38.2 kmph /  NW

Feels Like IconFeels 23 °C

Temperature IconCover 77 %

Visibility IconVisibility 10 km

3 PM

Patchy rain nearbyPatchy rain nearby

26 °C

61 %

4.9

41.4 kmph /  NW

Feels Like IconFeels 23 °C

Temperature IconCover 89 %

Visibility IconVisibility 10 km

4 PM

OvercastOvercast

9 °C

85 %

3.6

38.5 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

5 PM

OvercastOvercast

9 °C

85 %

2.9

38.9 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

6 PM

OvercastOvercast

9 °C

85 %

1.4

41 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

7 PM

OvercastOvercast

9 °C

86 %

0.4

41.8 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

8 PM

OvercastOvercast

9 °C

87 %

0

40.7 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

9 PM

OvercastOvercast

10 °C

88 %

0

42.5 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

10 PM

OvercastOvercast

10 °C

88 %

0

43.6 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

11 PM

OvercastOvercast

10 °C

89 %

0

43.6 kmph /  NW

Feels Like IconFeels 5 °C

Temperature IconCover 100 %

Visibility IconVisibility 10 km

Temp20 °C


ConditionRain


Humidity87 %

Feels17 °C


Cover100 %


Visibility10 km

Wind Speed & Dir.28.1 kmph /  NW


UV0

Sarnia 30-Days (August 2026) Weather Forecast

See Hourly
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny30°20°
2
Patchy rain nearby23°19°
3
Sunny27°16°
4
Sunny31°11°
5
Sunny33°14°
6
Sunny29°20°
7
Sunny31°20°
8
Sunny34°21°
9
Sunny31°15°
10
Sunny32°19°
11
Sunny32°19°
12
Sunny29°17°
13
Sunny29°17°
14
Sunny30°17°
15
Partly Cloudy30°16°
16
Patchy rain nearby26°20°
17Today
Sunny23°16°
18
Sunny30°16°
19
Sunny25°18°
20
Sunny27°16°
21
Patchy rain nearby22°19°
22
Patchy rain nearby20°18°
23
Sunny29°17°
24
Rain Showers26°17°
25
Rain Showers25°17°
26
Rain Showers25°17°
27
Rain Showers25°17°
28
Rain Showers25°17°
29
Rain Showers25°17°
30
Rain Showers25°16°
31
Rain24°16°

AugustWeather Overview

No. of days:

Sunny

Sunny

18

Cloudy

Cloudy

1

Rainy

Rainy

12

Snowy

Snowy

0


The monthly weather averages in Sarnia consist of 18 sunny days, 1 cloudy days, 12 rainy days, and 0 snowy days.

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FAQs About Sarnia Weather Conditions


1. What is the current temperature in Sarnia today - 17 August 2026?

The current temperature in Sarnia is 20°C, with a feels-like temperature of 17°C. Today's forecast shows a high of 26°C and a low of 9°C, giving a 17 degree swing through the day as of 06:00 AM 17 August 2026.

2. What are the current weather parameters in Sarnia today?

Here is a complete overview of Sarnia's current weather conditions as of 06:00 AM 17 August 2026: Condition : Rain Temperature : 20°C Cool (Feels like 17°C) Humidity : 87% Wind Speed : 28.1 km/h from NW (311 degrees), Gust 8.5 m/s UV Index : 0 (Low Air Pressure : 1026 mb Cloud Cover : 100% Visibility : 10 km Precipitation : 6.52 mm (87% chance of rain)

3. What is the 10-day weather forecast for Sarnia from 06:00 AM 17 August 2026?

From 06:00 AM 17 August 2026, Sarnia's 10-day forecast shows this trend: Today (Aug. 17) : Temp. 18°C, Hum. 83% and Overcast condition. Tuesday (Aug. 18) : Temp. 10°C, Hum. 93% and Overcast condition. Wednesday (Aug. 19) : Temp. 10°C, Hum. 94% and Patchy rain nearby condition. Thursday (Aug. 20) : Temp. 8°C, Hum. 74% and Patchy rain nearby condition. Friday (Aug. 21) : Temp. 7°C, Hum. 68% and Overcast condition. Saturday (Aug. 22) : Temp. 7°C, Hum. 73% and Overcast condition. Sunday (Aug. 23) : Temp. 7°C, Hum. 70% and Overcast condition. Monday (Aug. 24) : Temp. 8°C, Hum. 71% and Overcast condition. Tuesday (Aug. 25) : Temp. 21°C, Hum. 78% and Rain Showers condition. Wednesday (Aug. 26) : Temp. 21°C, Hum. 77% and Rain Showers condition.

4. Will it rain in Sarnia today?

As of 06:00 AM 17 August 2026, yes — Sarnia is currently experiencing rainfall with 6.52 mm of precipitation. This is expected to temporarily improve AQI by washing pollutants out of the atmosphere.

5. What is the monthly weather forecast for Sarnia in August 2026?

August 2026 in Sarnia is forecast to have 18 sunny days, 12 rainy days, 1 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 11°C to highs of 34°C.

6. How does the weather in Sarnia affect air quality?

Weather directly impacts air quality in Sarnia. Calm winds, high humidity, fog, and high pressure trap pollutants near the ground, worsening AQI. Strong winds, rainfall, and low pressure help disperse them. Rising temperatures and UV levels intensify ozone and smog formation, while poor visibility signals elevated particulate matter. Monitoring weather alongside AQI gives the clearest picture of outdoor safety.