Weather hour by hour (periods) in Sarnia , Canada

Day

partly cloudy to overcast

20°

Night

mostly cloudy

13°

Day

scattered clouds

20°

Night

mostly clear

13°

Day

scattered clouds

20°

Night

scattered clouds

14°

Day

overcast to mostly clear

23°

Night

mostly clear

17°

Day

generally partly cloudy with chance for rain showers with thunderstorms at noon

28°

Night

rain showers with thunderstorms from midnight

19°

Day

rain showers with thunderstorms

28°

Night

rain showers with thunderstorms

21°

Day

chance for rain showers with thunderstorms

25°

Night

generally scattered clouds with chance for rain showers at midnight

18°

Day

chance for light rain with thunderstorms from noon till afternoon

27°

Night

scattered clouds to cloudy

20°

Day

chance for rain showers with thunderstorms till afternoon

30°

Night

clear

23°

Dawn

Mostly Cloudy

Mostly Cloudy

13°

Morning

Mostly Cloudy

Mostly Cloudy

14°

Noon

Scattered Clouds

Scattered Clouds

19°

Afternoon

Cloudy

Cloudy

20°

Evening

Overcast

Overcast

15°

Night

Overcast

Overcast

14°

Dawn

Northeastern

11km/h

Morning

Northern

13km/h

Noon

Northeastern

12km/h

Afternoon

Northern

15km/h

Evening

Northern

14km/h

Night

Northern

11km/h

Dawn

Relative Humidity

81%

Morning

Relative Humidity

71%

Noon

Relative Humidity

65%

Afternoon

Relative Humidity

65%

Evening

Relative Humidity

82%

Night

Relative Humidity

84%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

0%

Afternoon

Precipitation Probability

0%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%

Dawn

Mostly Cloudy

Mostly Cloudy

13°

Morning

Scattered Clouds

Scattered Clouds

14°

Noon

Scattered Clouds

Scattered Clouds

19°

Afternoon

Scattered Clouds

Scattered Clouds

20°

Evening

Mostly Clear

Mostly Clear

17°

Night

Mostly Clear

Mostly Clear

14°

Dawn

Northeastern

11km/h

Morning

Northeastern

14km/h

Noon

Northeastern

14km/h

Afternoon

Northeastern

16km/h

Evening

Northern

13km/h

Night

Northern

12km/h

Dawn

Relative Humidity

78%

Morning

Relative Humidity

70%

Noon

Relative Humidity

64%

Afternoon

Relative Humidity

62%

Evening

Relative Humidity

79%

Night

Relative Humidity

83%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

0%

Afternoon

Precipitation Probability

0%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%

Dawn

Mostly Clear

Mostly Clear

13°

Morning

Scattered Clouds

Scattered Clouds

15°

Noon

Mostly Clear

Mostly Clear

20°

Afternoon

Scattered Clouds

Scattered Clouds

20°

Evening

Scattered Clouds

Scattered Clouds

16°

Night

Scattered Clouds

Scattered Clouds

15°

Dawn

Northern

10km/h

Morning

Northern

10km/h

Noon

Northern

12km/h

Afternoon

Northern

12km/h

Evening

Northern

10km/h

Night

Northern

9km/h

Dawn

Relative Humidity

84%

Morning

Relative Humidity

68%

Noon

Relative Humidity

60%

Afternoon

Relative Humidity

59%

Evening

Relative Humidity

74%

Night

Relative Humidity

83%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

0%

Afternoon

Precipitation Probability

0%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%

Dawn

Scattered Clouds

Scattered Clouds

14°

Morning

Overcast

Overcast

17°

Noon

Mostly Cloudy

Mostly Cloudy

23°

Afternoon

Overcast

Overcast

23°

Evening

Mostly Clear

Mostly Clear

22°

Night

Mostly Clear

Mostly Clear

18°

Dawn

Eastern

6km/h

Morning

Southeastern

6km/h

Noon

Southwestern

2km/h

Afternoon

Northeastern

5km/h

Evening

Southeastern

8km/h

Night

Southeastern

12km/h

Dawn

Relative Humidity

83%

Morning

Relative Humidity

69%

Noon

Relative Humidity

60%

Afternoon

Relative Humidity

53%

Evening

Relative Humidity

68%

Night

Relative Humidity

79%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

0%

Afternoon

Precipitation Probability

0%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%

Dawn

Mostly Clear

Mostly Clear

17°

Morning

Scattered Clouds

Scattered Clouds

20°

Noon

Chance for Thunderstorms

Chance for Thunderstorms

26°

Afternoon

Scattered Clouds

Scattered Clouds

28°

Evening

Scattered Clouds

Scattered Clouds

24°

Night

Chance for Thunderstorms

Chance for Thunderstorms

21°

Day Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Night Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Dawn

Southern

11km/h

Morning

Southern

13km/h

Noon

Southern

16km/h

Afternoon

Southwestern

21km/h

Evening

Southern

19km/h

Night

Southern

19km/h

Dawn

Relative Humidity

91%

Morning

Relative Humidity

71%

Noon

Relative Humidity

59%

Afternoon

Relative Humidity

54%

Evening

Relative Humidity

66%

Night

Relative Humidity

85%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

43%

Afternoon

Precipitation Probability

0%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

51%

Dawn

Thunderstorms

Thunderstorms

19°

Morning

Chance for Thunderstorms

Chance for Thunderstorms

21°

Noon

Thunderstorms

Thunderstorms

25°

Afternoon

Thunderstorms

Thunderstorms

28°

Evening

Thunderstorms

Thunderstorms

26°

Night

Thunderstorms

Thunderstorms

23°

Day Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Night Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Dawn

Southern

14km/h

Morning

Southwestern

16km/h

Noon

Southwestern

14km/h

Afternoon

Southwestern

11km/h

Evening

Southern

6km/h

Night

Southern

15km/h

Dawn

Relative Humidity

93%

Morning

Relative Humidity

83%

Noon

Relative Humidity

72%

Afternoon

Relative Humidity

68%

Evening

Relative Humidity

83%

Night

Relative Humidity

96%

Dawn

Precipitation Probability

69%

Morning

Precipitation Probability

51%

Noon

Precipitation Probability

69%

Afternoon

Precipitation Probability

77%

Evening

Precipitation Probability

77%

Night

Precipitation Probability

82%

Dawn

Thunderstorms

Thunderstorms

21°

Morning

Chance for Thunderstorms

Chance for Thunderstorms

21°

Noon

Chance for Thunderstorms

Chance for Thunderstorms

24°

Afternoon

Chance for Thunderstorms

Chance for Thunderstorms

25°

Evening

Chance for Thunderstorms

Chance for Thunderstorms

21°

Night

Chance for Thunderstorms

Chance for Thunderstorms

19°

Day Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Dawn

Southern

21km/h

Morning

North-west

21km/h

Noon

North-west

19km/h

Afternoon

North-west

16km/h

Evening

North-west

10km/h

Night

Western

12km/h

Dawn

Relative Humidity

96%

Morning

Relative Humidity

78%

Noon

Relative Humidity

65%

Afternoon

Relative Humidity

60%

Evening

Relative Humidity

71%

Night

Relative Humidity

90%

Dawn

Precipitation Probability

81%

Morning

Precipitation Probability

50%

Noon

Precipitation Probability

49%

Afternoon

Precipitation Probability

56%

Evening

Precipitation Probability

45%

Night

Precipitation Probability

38%

Dawn

Mostly Clear

Mostly Clear

18°

Morning

Mostly Clear

Mostly Clear

19°

Noon

Partly Cloudy with a chance for Thunderstorms and Light Rain

Partly Cloudy with a chance for Thunderstorms and Light Rain

25°

Afternoon

Partly Cloudy with  a chance for Light Rain

Partly Cloudy with a chance for Light Rain

27°

Evening

Scattered Clouds

Scattered Clouds

25°

Night

Scattered Clouds

Scattered Clouds

21°

Dawn

Western

19km/h

Morning

North-west

17km/h

Noon

Western

17km/h

Afternoon

North-west

18km/h

Evening

Western

22km/h

Night

Western

19km/h

Dawn

Relative Humidity

91%

Morning

Relative Humidity

76%

Noon

Relative Humidity

65%

Afternoon

Relative Humidity

63%

Evening

Relative Humidity

75%

Night

Relative Humidity

85%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

0%

Noon

Precipitation Probability

55%

Afternoon

Precipitation Probability

59%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%

Dawn

Overcast

Overcast

20°

Morning

Chance for Thunderstorms

Chance for Thunderstorms

20°

Noon

Chance for Thunderstorms

Chance for Thunderstorms

24°

Afternoon

Thunderstorms

Thunderstorms

30°

Evening

Clear

Clear

27°

Night

Clear

Clear

23°

Day Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Rain and thunderstorms expected (could be heavy locally) / Risk of possible increase on water levels on the roads, flash floods and traffic jams.

Dawn

Western

25km/h

Morning

Western

21km/h

Noon

Southwestern

25km/h

Afternoon

Southwestern

26km/h

Evening

Southwestern

16km/h

Night

Southwestern

16km/h

Dawn

Relative Humidity

86%

Morning

Relative Humidity

88%

Noon

Relative Humidity

80%

Afternoon

Relative Humidity

68%

Evening

Relative Humidity

78%

Night

Relative Humidity

89%

Dawn

Precipitation Probability

0%

Morning

Precipitation Probability

56%

Noon

Precipitation Probability

56%

Afternoon

Precipitation Probability

62%

Evening

Precipitation Probability

0%

Night

Precipitation Probability

0%