Weather for the next 7 days in St. Catharines, an urban area in Ontario, Canada.

Weather in St. Catharines for today, Monday, 12 Oct 2026

Sunrise: 07:27
Sunset: 18:38
Moonrise: 09:44
Moonset: 19:13
UV Index: 3

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Clear

Partly Cloudy

Sunny

Overcast

Partly Cloudy

Temperature

16°C

15°C

18°C

20°C

18°C

19°C

Feels Like

16°C

14°C

15°C

18°C

20°C

18°C

19°C

Precipitation

0 mm

Probability

14 %

18 %

13 %

24 %

18 %

19 %

17 %

13 %

Cloud Cover

5 %

33 %

6 %

100 %

97 %

54 %

36 %

Wind Speed

11 km/h

16 km/h

20 km/h

17 km/h

20 km/h

18 km/h

19 km/h

Wind Direction

WNW

WSW

SSW

Wind Gusts

13 km/h

23 km/h

29 km/h

24 km/h

26 km/h

28 km/h

35 km/h

Humidity

90 %

92 %

89 %

81 %

71 %

73 %

85 %

81 %

Dew Point

14°C

13°C

15°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for tomorrow, Tuesday, 13 Oct 2026

Sunrise: 07:28
Sunset: 18:37
Moonrise: 10:52
Moonset: 19:46
UV Index: 4

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Light drizzle

Light rain shower

Patchy rain nearby

Sunny

Moderate rain at times

Patchy rain nearby

Clear

Temperature

19°C

17°C

18°C

19°C

21°C

19°C

Feels Like

19°C

17°C

18°C

19°C

21°C

19°C

Precipitation

0.2 mm

0.6 mm

0.5 mm

0.3 mm

0 mm

0.6 mm

0 mm

Probability

42 %

70 %

63 %

45 %

7 %

47 %

19 %

13 %

Cloud Cover

89 %

100 %

85 %

0 %

71 %

73 %

5 %

Wind Speed

18 km/h

14 km/h

21 km/h

33 km/h

34 km/h

28 km/h

21 km/h

Wind Direction

SSW

Wind Gusts

30 km/h

22 km/h

35 km/h

49 km/h

45 km/h

50 km/h

47 km/h

31 km/h

Humidity

84 %

92 %

91 %

84 %

75 %

78 %

79 %

89 %

Dew Point

16°C

17°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for Wednesday, 14 Oct 2026

Sunrise: 07:30
Sunset: 18:35
Moonrise: 11:56
Moonset: 20:24
UV Index: 3

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Clear

Partly Cloudy

Sunny

Overcast

Partly Cloudy

Clear

Temperature

17°C

15°C

17°C

15°C

14°C

Feels Like

17°C

15°C

13°C

15°C

14°C

17°C

13°C

Precipitation

0 mm

Probability

11 %

17 %

11 %

22 %

21 %

19 %

9 %

6 %

Cloud Cover

0 %

52 %

6 %

100 %

30 %

8 %

Wind Speed

17 km/h

18 km/h

16 km/h

18 km/h

12 km/h

13 km/h

24 km/h

18 km/h

Wind Direction

WNW

WSW

NNE

NNW

Wind Gusts

22 km/h

24 km/h

18 km/h

21 km/h

16 km/h

26 km/h

19 km/h

Humidity

85 %

86 %

84 %

77 %

75 %

71 %

73 %

69 %

Dew Point

14°C

13°C

12°C

11°C

10°C

9°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for Thursday, 15 Oct 2026

Sunrise: 07:31
Sunset: 18:33
Moonrise: 12:54
Moonset: 21:12
UV Index: 4

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Overcast

Cloudy

Partly Cloudy

Cloudy

Overcast

Light drizzle

Temperature

13°C

12°C

11°C

12°C

11°C

10°C

Feels Like

11°C

9°C

7°C

8°C

9°C

10°C

8°C

6°C

Precipitation

0 mm

0.7 mm

Probability

20 %

18 %

15 %

9 %

12 %

15 %

61 %

Cloud Cover

98 %

99 %

65 %

40 %

82 %

100 %

Wind Speed

21 km/h

26 km/h

27 km/h

28 km/h

26 km/h

33 km/h

29 km/h

31 km/h

Wind Direction

NNE

ENE

ESE

Wind Gusts

23 km/h

27 km/h

29 km/h

28 km/h

44 km/h

35 km/h

40 km/h

Humidity

74 %

70 %

75 %

68 %

61 %

62 %

74 %

Dew Point

9°C

6°C

5°C

4°C

6°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for Friday, 16 Oct 2026

Sunrise: 07:32
Sunset: 18:32
Moonrise: 13:45
Moonset: 22:07
UV Index: 4

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Moderate rain

Patchy rain nearby

Light rain

Light drizzle

Sunny

Light rain shower

Patchy rain nearby

Light rain

Temperature

9°C

12°C

17°C

14°C

13°C

12°C

10°C

Feels Like

7°C

11°C

17°C

11°C

12°C

10°C

8°C

6°C

Precipitation

2.9 mm

0 mm

1.1 mm

0.2 mm

0 mm

0.2 mm

0.1 mm

1.1 mm

Probability

86 %

29 %

75 %

43 %

5 %

24 %

29 %

68 %

Cloud Cover

100 %

94 %

100 %

5 %

82 %

90 %

100 %

Wind Speed

21 km/h

12 km/h

41 km/h

44 km/h

48 km/h

45 km/h

50 km/h

37 km/h

Wind Direction

ESE

WSW

WNW

Wind Gusts

25 km/h

27 km/h

60 km/h

59 km/h

65 km/h

60 km/h

63 km/h

46 km/h

Humidity

94 %

91 %

92 %

82 %

67 %

74 %

79 %

Dew Point

8°C

10°C

15°C

11°C

8°C

7°C

6°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for Saturday, 17 Oct 2026

Sunrise: 07:33
Sunset: 18:30
Moonrise: 14:27
Moonset: 23:07
UV Index: 3

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Light rain shower

Light sleet showers

Blizzard

Blowing snow

Sunny

Clear

Temperature

8°C

5°C

4°C

6°C

5°C

Feels Like

4°C

-1°C

-3°C

0°C

1°C

2°C

Precipitation

0.4 mm

0.1 mm

0 mm

Probability

46 %

54 %

25 %

22 %

4 %

3 %

2 %

3 %

Cloud Cover

100 %

52 %

92 %

21 %

4 %

0 %

Wind Speed

41 km/h

48 km/h

40 km/h

41 km/h

38 km/h

31 km/h

21 km/h

Wind Direction

NNW

Wind Gusts

50 km/h

60 km/h

61 km/h

49 km/h

45 km/h

43 km/h

36 km/h

25 km/h

Humidity

77 %

84 %

74 %

66 %

53 %

52 %

53 %

Dew Point

5°C

3°C

-1°C

-2°C

-3°C

-4°C

-3°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather in St. Catharines for Sunday, 18 Oct 2026

Sunrise: 07:34
Sunset: 18:29
Moonrise: 15:02
Moonset: 19:00
UV Index: 4

02:00

05:00

08:00

11:00

14:00

17:00

20:00

23:00

Clear

Overcast

Partly Cloudy

Sunny

Clear

Temperature

5°C

4°C

6°C

10°C

12°C

13°C

11°C

13°C

Feels Like

2°C

-1°C

2°C

6°C

8°C

10°C

9°C

11°C

Precipitation

0 mm

Probability

3 %

7 %

17 %

6 %

3 %

2 %

3 %

Cloud Cover

0 %

1 %

100 %

32 %

7 %

5 %

0 %

Wind Speed

15 km/h

21 km/h

22 km/h

37 km/h

40 km/h

39 km/h

28 km/h

29 km/h

Wind Direction

Wind Gusts

18 km/h

25 km/h

34 km/h

41 km/h

47 km/h

53 km/h

52 km/h

50 km/h

Humidity

57 %

68 %

67 %

63 %

51 %

50 %

57 %

56 %

Dew Point

-2°C

0°C

3°C

2°C

3°C

5°C

00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Weather forecast interval

Major cities in Ontario

• Toronto
• Ottawa
• Hamilton
• Kitchener
• London
• St. Catharines
• Oshawa
• Windsor
• Barrie
• Guelph
• Kingston
• Sudbury
• Thunder Bay
• Kanata
• Brantford
• Peterborough
• Sarnia
• Milton
• Sault Ste. Marie
• Belleville
• North Bay
• Cornwall
• Chatham
• Bowmanville
• St. Thomas
• Georgetown
• Woodstock
• Midland
• Leamington
• Stratford
• Orangeville
• Timmins
• Orillia
• Bolton
• Keswick
• Stouffville
• Brockville
• Bradford
• Owen Sound
• Valley East

Weather for the next 7 days in St. Catharines, an urban area in Ontario, Canada.

Weather in St. Catharines for today, Monday, 12 Oct 2026

Weather in St. Catharines for tomorrow, Tuesday, 13 Oct 2026

Weather in St. Catharines for Wednesday, 14 Oct 2026

Weather in St. Catharines for Thursday, 15 Oct 2026

Weather in St. Catharines for Friday, 16 Oct 2026

Weather in St. Catharines for Saturday, 17 Oct 2026

Weather in St. Catharines for Sunday, 18 Oct 2026

Weather forecast interval

Major cities in Ontario

Provinces in Canada

Hourly Weather Forecast

Daily Weather Forecast