St. Catharines Weather in 2017

Historical record of St. Catharines, Ontario weather for the year 2017 based on NOAA data.

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2017 St. Catharines Weather Extremes
Highest temperature	32.2 °C	September 23
Lowest temperature	-13.2 °C	December 31
Highest daily low	21.0 °C	August 2
Lowest daily high	-9.8 °C	December 31
Most daily precipitation	6.1 cm	October 9
Total annual precipitation	80.9 cm	-

What was the hottest temperature in St. Catharines in 2017?

The highest temperature recorded in St. Catharines, Ontario in 2017 was 32.2 °C which happened on September 23.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Catharines in 2017

Rank	Temperature	Date
1	32.2 °C	Sep 23
2	30.3 °C	Jun 17
3	30.1 °C	Aug 2
3	30.1 °C	Jul 31
5	29.8 °C	Jun 16
6	29.5 °C	Aug 21
7	29.3 °C	Sep 24
7	29.3 °C	Jun 18
9	29.2 °C	Jun 12
10	28.9 °C	Jul 30

What was the coldest temperature in St. Catharines in 2017?

The lowest temperature recorded in St. Catharines, Ontario in 2017 was -13.2 °C which happened on Dec 31.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Catharines in 2017

Rank	Temperature	Date
1	-13.2 °C	December 31
2	-12.9 °C	December 28
3	-12.0 °C	December 27
4	-11.9 °C	December 30
5	-11.7 °C	December 29
6	-11.1 °C	January 7
7	-10.8 °C	December 26
8	-10.1 °C	December 15
9	-9.9 °C	January 6
10	-9.6 °C	March 12

January 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	4.9	-1.0	0.00
January 2	4.5	-1.2	0.00
January 3	4.2	2.9	1.10
January 4	3.6	-6.2	0.05
January 5	-4.5	-8.7	0.00
January 6	-5.3	-9.9	0.00
January 7	-5.1	-11.1	0.00
January 8	-5.8	-9.2	0.00
January 9	-1.6	-8.1	0.00
January 10	8.8	-2.5	0.35
January 11	11.2	1.6	0.00
January 12	12.7	0.3	0.91
January 13	0.4	-4.3	0.00
January 14	-2.3	-5.7	0.00
January 15	1.7	-3.9	0.00
January 16	3.3	-3.8	0.00
January 17	2.8	0.7	1.02
January 18	3.0	1.7	0.16
January 19	3.2	0.9	0.00
January 20	4.1	0.9	0.07
January 21	4.9	2.2	0.00
January 22	3.3	1.6	0.02
January 23	3.1	1.8	0.00
January 24	2.4	0.8	0.00
January 25	5.6	1.5	0.02
January 26	5.0	1.2	0.22
January 27	2.8	-0.2	0.10
January 28	0.5	-1.2	0.02
January 29	n/a	n/a	n/a
January 30	n/a	n/a	n/a
January 31	n/a	n/a	n/a

February 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	n/a	n/a	n/a
February 2	-0.2	-5.8	0.00
February 3	-3.9	-7.8	0.00
February 4	-0.2	-7.7	0.00
February 5	1.7	-1.0	0.02
February 6	3.7	-2.6	0.00
February 7	9.8	0.2	1.33
February 8	5.8	-4.8	0.00
February 9	-3.5	-8.2	0.00
February 10	0.3	-6.0	0.13
February 11	3.8	0.2	0.00
February 12	2.7	-1.2	1.32
February 13	0.5	-3.1	0.00
February 14	5.4	-2.5	0.00
February 15	2.8	-2.6	0.09
February 16	-1.5	-5.6	0.02
February 17	0.5	-4.2	0.00
February 18	12.0	-0.9	0.00
February 19	9.3	1.7	0.00
February 20	3.2	0.6	0.00
February 21	4.0	-0.3	0.00
February 22	13.0	2.4	0.00
February 23	14.8	3.1	0.00
February 24	4.1	2.9	0.38
February 25	11.3	-0.5	0.95
February 26	4.1	-2.4	0.10
February 27	n/a	n/a	n/a
February 28	n/a	n/a	n/a

March 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	n/a	n/a	n/a
March 2	n/a	n/a	n/a
March 3	n/a	n/a	n/a
March 4	-3.9	-9.1	0.00
March 5	-0.4	-8.8	0.00
March 6	11.0	-2.0	0.00
March 7	14.4	5.7	0.77
March 8	9.9	4.0	0.00
March 9	4.3	1.1	0.00
March 10	1.3	-7.1	0.00
March 11	-3.8	-8.2	0.05
March 12	-3.0	-9.6	0.00
March 13	-4.1	-7.3	0.14
March 14	-4.7	-7.0	0.37
March 15	-1.2	-7.2	0.14
March 16	2.1	-2.7	0.00
March 17	6.3	-3.7	0.00
March 18	1.5	-0.8	0.13
March 19	4.4	0.2	0.00
March 20	5.7	-0.4	0.00
March 21	10.5	-0.7	0.00
March 22	-0.6	-5.3	0.00
March 23	2.4	-4.2	0.00
March 24	12.7	1.6	0.68
March 25	3.2	1.9	0.92
March 26	3.8	2.0	0.02
March 27	14.4	2.9	0.09
March 28	9.7	2.8	0.00
March 29	5.9	2.0	0.00
March 30	4.7	2.1	0.96
March 31	3.8	2.6	1.38

April 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	9.2	2.4	0.02
April 2	14.7	2.8	0.00
April 3	5.8	4.3	0.67
April 4	13.1	4.3	1.01
April 5	7.1	4.7	0.00
April 6	5.4	1.7	3.01
April 7	5.6	1.1	0.37
April 8	11.7	3.2	0.00
April 9	20.7	5.1	0.00
April 10	21.2	11.2	1.57
April 11	18.4	7.1	0.00
April 12	10.0	4.4	0.00
April 13	11.8	2.9	0.00
April 14	8.2	5.5	0.00
April 15	19.8	4.2	0.20
April 16	19.6	8.0	0.00
April 17	12.1	3.9	0.00
April 18	6.9	3.8	0.00
April 19	17.4	6.1	0.47
April 20	8.7	5.7	5.07
April 21	12.1	5.1	0.00
April 22	12.8	5.5	0.00
April 23	19.1	4.7	0.00
April 24	n/a	6.5	n/a
April 25	8.4	6.3	0.58
April 26	9.5	5.7	0.00
April 27	16.3	7.0	0.25
April 28	18.3	9.7	0.00
April 29	12.8	6.8	0.03
April 30	8.6	4.8	1.59

May 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	16.3	6.0	3.82
May 2	11.6	7.5	0.07
May 3	14.2	6.1	0.00
May 4	12.1	6.9	1.30
May 5	8.6	6.6	2.68
May 6	7.5	6.0	0.16
May 7	10.6	5.6	0.02
May 8	11.2	4.9	0.00
May 9	9.7	4.4	0.00
May 10	10.8	6.7	0.00
May 11	9.7	7.5	0.00
May 12	10.2	7.6	0.00
May 13	12.3	7.8	0.00
May 14	14.8	6.9	0.00
May 15	19.0	7.7	0.00
May 16	20.8	8.5	0.00
May 17	24.8	8.5	0.00
May 18	26.3	13.1	0.00
May 19	14.7	10.4	0.00
May 20	13.8	9.2	0.00
May 21	15.8	8.8	1.72
May 22	17.8	10.1	0.00
May 23	21.7	11.0	0.00
May 24	16.2	10.7	0.06
May 25	15.7	9.0	3.05
May 26	17.5	8.9	0.07
May 27	17.4	11.3	0.00
May 28	18.0	10.4	0.00
May 29	23.9	13.8	0.45
May 30	23.4	13.0	0.17
May 31	22.4	12.3	0.05

June 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	18.4	11.4	0.00
June 2	20.6	10.9	0.00
June 3	20.1	11.5	0.00
June 4	17.9	12.6	0.17
June 5	15.6	12.6	0.02
June 6	16.4	12.1	0.28
June 7	17.7	11.6	0.00
June 8	19.5	11.1	0.00
June 9	24.6	13.9	0.00
June 10	27.0	15.6	0.00
June 11	28.5	20.4	0.00
June 12	29.2	18.9	0.00
June 13	22.8	16.3	0.00
June 14	19.0	15.7	0.00
June 15	18.7	14.6	0.00
June 16	29.8	15.0	0.00
June 17	30.3	19.3	0.00
June 18	29.3	19.4	0.00
June 19	26.1	17.6	0.36
June 20	23.7	14.7	0.34
June 21	23.6	14.3	0.00
June 22	25.8	15.2	0.15
June 23	24.1	18.9	4.10
June 24	24.4	17.5	0.00
June 25	22.2	14.3	0.21
June 26	22.2	13.6	1.02
June 27	20.4	13.1	0.12
June 28	24.7	15.2	0.00
June 29	26.4	17.5	0.24
June 30	26.5	19.5	0.73

July 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	25.9	17.2	0.61
July 2	26.6	16.8	0.00
July 3	25.2	16.7	0.00
July 4	23.4	16.0	0.00
July 5	22.0	17.3	0.00
July 6	27.4	16.6	0.00
July 7	26.9	18.9	0.00
July 8	24.7	17.5	0.00
July 9	26.6	17.0	0.00
July 10	25.1	18.5	0.45
July 11	24.6	18.4	0.00
July 12	25.9	20.4	0.37
July 13	20.8	15.6	1.34
July 14	26.3	13.1	0.00
July 15	26.4	15.8	0.00
July 16	24.2	17.9	0.36
July 17	24.1	18.9	0.00
July 18	26.7	18.2	0.00
July 19	28.0	19.6	0.00
July 20	24.1	16.7	2.02
July 21	28.5	21.0	0.00
July 22	23.4	20.5	0.02
July 23	23.2	20.2	0.00
July 24	23.8	17.8	0.03
July 25	21.1	17.7	0.00
July 26	24.5	15.8	0.00
July 27	25.2	19.8	0.56
July 28	21.6	19.8	0.00
July 29	25.3	18.5	0.00
July 30	28.9	20.0	0.00
July 31	30.1	19.4	0.22

August 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	27.2	20.9	0.09
August 2	30.1	21.0	0.00
August 3	26.5	19.9	1.12
August 4	27.2	17.5	1.68
August 5	22.6	16.2	0.00
August 6	25.2	15.3	0.43
August 7	23.6	17.6	0.42
August 8	25.9	17.6	0.00
August 9	28.5	19.1	0.00
August 10	n/a	18.9	n/a
August 11	25.2	18.0	0.36
August 12	26.8	17.8	0.00
August 13	27.0	19.1	0.00
August 14	23.7	18.4	0.00
August 15	26.0	18.6	0.00
August 16	22.3	18.9	0.00
August 17	24.2	17.0	0.82
August 18	26.6	19.9	0.00
August 19	25.4	18.3	0.00
August 20	27.6	17.7	0.00
August 21	29.5	20.3	0.00
August 22	26.8	18.2	0.45
August 23	24.0	16.9	0.00
August 24	20.9	15.8	0.00
August 25	20.7	15.6	0.00
August 26	21.3	14.0	0.00
August 27	22.1	14.5	0.00
August 28	23.1	15.9	0.00
August 29	21.8	14.9	0.00
August 30	23.8	14.7	0.00
August 31	22.2	14.9	0.00

September 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	16.3	12.8	0.00
September 2	19.9	11.4	0.00
September 3	20.9	14.5	0.74
September 4	26.0	17.4	1.07
September 5	21.4	15.6	1.11
September 6	20.2	13.4	0.06
September 7	21.1	13.8	0.00
September 8	19.3	13.2	0.12
September 9	18.0	13.5	0.00
September 10	17.7	13.7	0.00
September 11	19.0	12.0	0.00
September 12	21.6	13.9	0.00
September 13	21.2	15.0	0.00
September 14	26.8	17.8	0.00
September 15	24.8	17.4	0.00
September 16	23.4	17.6	0.00
September 17	23.6	17.3	0.00
September 18	23.8	18.3	0.00
September 19	22.6	19.1	0.00
September 20	22.0	17.3	0.00
September 21	23.4	17.5	0.00
September 22	23.7	17.2	0.00
September 23	32.2	17.8	0.00
September 24	29.3	20.6	0.00
September 25	26.4	20.7	0.00
September 26	26.1	20.9	0.00
September 27	28.8	17.2	0.00
September 28	19.7	13.8	0.00
September 29	20.5	12.1	0.12
September 30	14.9	9.9	0.00

October 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	17.1	9.2	0.00
October 2	19.0	10.7	0.00
October 3	25.8	13.4	0.00
October 4	25.7	15.6	0.41
October 5	23.0	15.2	0.00
October 6	19.8	15.6	0.08
October 7	26.7	17.4	0.49
October 8	24.6	17.3	0.24
October 9	20.3	15.7	6.08
October 10	21.3	15.2	0.00
October 11	16.5	10.7	0.28
October 12	16.6	10.8	0.00
October 13	20.5	15.0	0.00
October 14	19.7	14.7	0.45
October 15	25.1	10.4	0.06
October 16	12.4	7.5	0.00
October 17	18.4	7.1	0.00
October 18	20.5	13.1	0.00
October 19	20.8	12.5	0.00
October 20	21.5	10.7	0.00
October 21	22.8	12.4	0.00
October 22	25.2	14.8	0.00
October 23	21.1	15.0	0.34
October 24	17.6	11.8	0.03
October 25	13.8	8.3	0.27
October 26	13.2	7.6	0.00
October 27	19.1	7.4	0.00
October 28	14.2	7.4	0.07
October 29	9.3	6.7	0.02
October 30	10.9	7.0	0.00
October 31	n/a	6.8	n/a

November 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	n/a	5.3	n/a
November 2	n/a	7.2	n/a
November 3	n/a	n/a	n/a
November 4	9.1	5.2	0.58
November 5	16.7	7.3	0.57
November 6	11.8	5.6	0.00
November 7	7.6	3.6	0.00
November 8	9.7	3.1	0.00
November 9	9.8	-0.4	0.00
November 10	-0.1	-4.9	0.00
November 11	2.3	-3.2	0.00
November 12	6.7	2.3	0.04
November 13	6.1	2.2	0.18
November 14	6.8	2.8	0.00
November 15	9.4	2.8	0.32
November 16	9.1	2.6	0.02
November 17	3.5	0.1	0.00
November 18	9.7	2.6	1.80
November 19	5.5	1.4	0.25
November 20	8.0	-0.2	0.00
November 21	11.2	3.3	0.25
November 22	4.1	-0.4	0.00
November 23	5.0	0.1	0.00
November 24	11.0	3.1	0.00
November 25	11.0	3.0	0.11
November 26	5.5	2.1	0.00
November 27	5.4	0.1	0.00
November 28	16.7	0.5	0.00
November 29	9.2	1.3	0.00
November 30	11.0	0.4	0.27

December 2017 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	7.8	2.8	0.00
December 2	6.2	2.2	0.00
December 3	8.2	2.2	0.00
December 4	11.7	1.8	0.00
December 5	11.9	2.1	0.34
December 6	4.9	0.6	0.00
December 7	2.5	-1.6	0.00
December 8	1.4	-2.3	0.00
December 9	2.3	-0.8	0.00
December 10	0.5	-1.0	0.00
December 11	-0.4	-3.4	0.18
December 12	0.6	-7.2	0.29
December 13	-4.8	-7.4	0.15
December 14	-4.3	-8.7	0.06
December 15	-2.0	-10.1	0.24
December 16	-0.8	-4.1	0.00
December 17	-2.9	-5.5	0.00
December 18	4.9	-3.8	0.04
December 19	7.0	3.1	0.00
December 20	3.6	-1.2	0.00
December 21	-0.1	-2.6	0.10
December 22	0.2	-2.5	0.08
December 23	1.5	-1.1	0.73
December 24	0.0	-1.8	0.22
December 25	-0.9	-8.7	0.23
December 26	-8.2	-10.8	0.00
December 27	-6.9	-12.0	0.04
December 28	-8.8	-12.9	0.09
December 29	-6.8	-11.7	0.02
December 30	-5.0	-11.9	0.09
December 31	-9.8	-13.2	0.02

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Weather Station Details

Years	Station	Coordinates
1995–2024	Port Weller (AUT)	location
1882–1994	St Catherines	location