St. Catharines Weather in 2015

Historical record of St. Catharines, Ontario weather for the year 2015 based on NOAA data.

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2015 St. Catharines Weather Extremes
Highest temperature	32.2 °C	September 7
Lowest temperature	-21.2 °C	February 20
Highest daily low	22.9 °C	July 30
Lowest daily high	-14.0 °C	February 15
Most daily precipitation	5.4 cm	June 27
Total annual precipitation	60.0 cm	-

What was the hottest temperature in St. Catharines in 2015?

The highest temperature recorded in St. Catharines, Ontario in 2015 was 32.2 °C which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Catharines in 2015

Rank	Temperature	Date
1	32.2 °C	Sep 7
1	32.2 °C	Jul 29
3	30.8 °C	Aug 19
4	30.7 °C	Aug 17
5	30.5 °C	Jul 31
6	30.3 °C	Jul 30
7	30.2 °C	Sep 8
8	30.1 °C	Jul 27
9	29.9 °C	Sep 6
10	29.8 °C	Aug 16
10	29.8 °C	Jul 25

What was the coldest temperature in St. Catharines in 2015?

The lowest temperature recorded in St. Catharines, Ontario in 2015 was -21.2 °C which happened on Feb 20.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Catharines in 2015

Rank	Temperature	Date
1	-21.2 °C	February 20
2	-20.6 °C	February 23
3	-20.5 °C	February 16
4	-19.8 °C	February 24
5	-19.0 °C	February 17
5	-19.0 °C	February 15
7	-17.9 °C	February 28
8	-17.8 °C	March 6
9	-17.1 °C	February 19
10	-16.9 °C	February 13

January 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	0.1	-5.4	0.00
January 2	0.7	-3.5	0.00
January 3	1.3	-3.5	1.46
January 4	5.4	-2.7	2.44
January 5	-2.5	-10.3	0.00
January 6	-6.1	-10.7	0.05
January 7	-6.6	-14.1	0.10
January 8	-5.5	-11.2	0.14
January 9	-4.3	-10.1	0.02
January 10	-5.0	-12.3	0.00
January 11	0.9	-5.3	0.10
January 12	0.2	-10.2	0.22
January 13	-9.3	-13.1	0.02
January 14	-3.5	-15.5	0.00
January 15	-0.8	-11.3	0.02
January 16	n/a	n/a	n/a
January 17	n/a	n/a	n/a
January 18	7.0	1.4	0.02
January 19	1.6	-5.1	0.00
January 20	-5.0	-8.0	0.00
January 21	-2.1	-8.4	0.00
January 22	0.4	-3.8	0.00
January 23	0.4	-3.2	0.00
January 24	1.5	-4.1	0.02
January 25	1.0	-8.6	0.00
January 26	-4.5	-8.3	0.04
January 27	-4.3	-7.6	0.02
January 28	-1.3	-8.5	0.00
January 29	2.4	-7.6	0.53
January 30	-0.3	-9.6	0.00
January 31	-0.7	-11.1	0.00

February 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	-0.6	-8.3	0.24
February 2	-6.2	-12.5	0.20
February 3	-4.2	-12.4	0.04
February 4	0.6	-4.8	0.22
February 5	-4.8	-13.3	0.00
February 6	-3.3	-10.8	0.04
February 7	-0.7	-3.8	0.23
February 8	-3.7	-7.4	0.15
February 9	-6.4	-8.5	0.09
February 10	-5.0	-10.5	0.02
February 11	-0.7	-10.9	0.13
February 12	-0.9	-13.1	0.02
February 13	-8.2	-16.9	0.02
February 14	-4.3	-14.5	0.10
February 15	-14.0	-19.0	0.16
February 16	-13.2	-20.5	0.02
February 17	-8.4	-19.0	0.00
February 18	-6.6	-10.1	0.32
February 19	-9.3	-17.1	0.00
February 20	-13.2	-21.2	0.02
February 21	-5.0	-15.2	0.51
February 22	-2.5	-11.7	0.00
February 23	-11.3	-20.6	0.00
February 24	-6.6	-19.8	0.00
February 25	-4.2	-11.3	0.02
February 26	-7.8	-12.2	0.06
February 27	-8.2	-16.2	0.00
February 28	-5.2	-17.9	0.02

March 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	-3.3	-12.3	0.16
March 2	-1.3	-11.1	0.03
March 3	2.2	-12.5	0.76
March 4	1.8	-6.4	0.00
March 5	-6.4	-15.5	0.00
March 6	-5.4	-17.8	0.00
March 7	0.2	-6.0	0.00
March 8	3.8	-2.0	0.00
March 9	5.7	-3.5	0.00
March 10	5.9	-2.2	0.00
March 11	4.6	0.9	0.00
March 12	2.2	-2.2	0.00
March 13	2.1	-2.5	0.00
March 14	6.6	0.9	0.00
March 15	3.5	0.1	0.00
March 16	6.9	0.5	0.28
March 17	2.9	-1.9	0.00
March 18	2.5	-2.8	0.00
March 19	0.3	-3.1	0.00
March 20	7.7	-0.8	0.00
March 21	4.6	-3.2	n/a
March 22	-1.4	-6.6	0.00
March 23	-3.5	-8.6	0.00
March 24	-0.4	-5.7	0.00
March 25	7.1	-2.2	0.20
March 26	3.7	0.3	1.04
March 27	1.4	-5.1	0.00
March 28	-0.2	-7.6	0.00
March 29	5.8	-6.1	0.00
March 30	4.7	0.8	0.03
March 31	2.7	-0.6	0.00

April 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	3.2	-0.9	0.00
April 2	17.2	1.7	0.47
April 3	12.4	2.2	0.50
April 4	5.1	0.6	0.00
April 5	2.0	0.3	0.05
April 6	4.8	1.4	0.00
April 7	5.6	1.8	0.00
April 8	3.7	1.5	2.39
April 9	12.8	1.6	0.94
April 10	16.6	3.6	0.02
April 11	9.5	3.1	0.00
April 12	15.7	3.5	0.00
April 13	23.0	3.5	0.28
April 14	15.4	4.4	0.00
April 15	11.1	3.3	0.00
April 16	10.9	4.8	0.28
April 17	20.5	7.7	0.17
April 18	13.8	5.7	0.00
April 19	11.4	4.0	0.28
April 20	18.2	4.4	0.77
April 21	12.5	6.0	0.04
April 22	8.5	1.6	0.12
April 23	3.5	0.5	0.00
April 24	7.0	1.0	0.00
April 25	8.1	1.0	0.00
April 26	11.3	2.9	0.00
April 27	8.0	4.0	0.00
April 28	16.6	4.4	0.00
April 29	18.6	5.7	0.00
April 30	9.4	5.4	0.00

May 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	18.1	4.8	0.00
May 2	21.3	6.9	0.00
May 3	23.9	10.4	0.00
May 4	22.2	8.9	0.00
May 5	10.1	5.7	0.00
May 6	9.9	6.3	0.00
May 7	16.3	6.8	0.00
May 8	15.2	8.4	0.00
May 9	21.6	9.3	0.02
May 10	20.0	8.5	0.04
May 11	18.3	7.3	1.09
May 12	17.5	7.3	0.02
May 13	13.8	6.4	0.00
May 14	13.2	5.9	0.00
May 15	18.8	7.1	0.03
May 16	24.7	7.8	0.00
May 17	15.1	9.4	0.00
May 18	27.0	10.1	0.00
May 19	19.3	6.6	0.00
May 20	16.2	5.4	0.00
May 21	19.2	7.9	0.00
May 22	16.3	5.8	0.00
May 23	19.0	4.7	0.00
May 24	25.5	10.8	0.00
May 25	26.2	12.9	0.00
May 26	n/a	14.8	n/a
May 27	26.3	16.3	0.13
May 28	24.1	11.8	0.00
May 29	21.5	11.1	0.12
May 30	27.8	11.4	0.67
May 31	11.4	7.3	2.45

June 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	n/a	n/a	n/a
June 2	n/a	n/a	n/a
June 3	12.6	8.7	0.00
June 4	14.4	8.4	0.00
June 5	18.6	10.9	1.38
June 6	14.8	11.1	0.00
June 7	23.4	10.1	0.76
June 8	20.9	14.2	1.37
June 9	21.6	13.7	0.61
June 10	25.4	14.2	0.03
June 11	23.6	13.7	0.00
June 12	16.0	12.8	1.50
June 13	17.6	13.6	0.00
June 14	18.1	14.2	0.60
June 15	24.7	14.4	0.22
June 16	24.5	15.9	0.12
June 17	19.7	13.7	0.00
June 18	25.2	13.9	0.00
June 19	18.2	14.7	0.00
June 20	17.9	13.7	0.00
June 21	23.8	15.7	0.00
June 22	25.9	17.2	0.00
June 23	25.4	15.7	0.38
June 24	25.0	14.9	0.00
June 25	21.5	16.8	0.00
June 26	20.3	16.5	0.00
June 27	17.7	11.6	5.40
June 28	13.7	10.5	0.48
June 29	22.9	12.1	0.02
June 30	20.0	13.8	0.00

July 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	20.7	14.3	0.00
July 2	21.9	14.1	0.00
July 3	19.3	14.2	0.00
July 4	24.6	15.5	0.00
July 5	26.9	16.3	0.00
July 6	22.3	18.2	0.00
July 7	28.2	17.4	0.26
July 8	19.6	15.5	0.00
July 9	20.0	16.1	0.49
July 10	26.6	15.8	0.00
July 11	28.2	16.7	0.00
July 12	24.8	18.8	0.00
July 13	24.3	18.4	0.06
July 14	23.3	18.6	0.51
July 15	20.6	14.4	0.00
July 16	20.7	15.2	0.00
July 17	25.8	16.4	0.36
July 18	29.2	20.0	n/a
July 19	28.8	20.6	0.00
July 20	27.9	19.4	0.00
July 21	25.8	20.0	0.00
July 22	24.4	18.4	0.00
July 23	26.5	15.6	0.00
July 24	29.1	18.2	0.00
July 25	29.8	21.1	0.00
July 26	26.4	20.2	0.00
July 27	30.1	19.6	0.00
July 28	28.6	21.3	0.00
July 29	32.2	21.8	0.00
July 30	30.3	22.9	0.00
July 31	30.5	19.2	1.17

August 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	28.1	19.7	0.14
August 2	28.4	19.1	n/a
August 3	27.5	19.2	0.00
August 4	27.0	17.9	1.01
August 5	24.5	17.7	0.00
August 6	24.1	16.6	0.00
August 7	22.7	17.7	0.00
August 8	20.6	15.2	0.00
August 9	21.4	11.3	0.00
August 10	21.0	14.0	1.03
August 11	25.2	16.0	0.00
August 12	23.2	17.3	0.02
August 13	26.3	14.7	0.00
August 14	25.0	20.3	0.35
August 15	27.3	20.0	0.00
August 16	29.8	20.5	0.00
August 17	30.7	21.5	0.00
August 18	26.4	20.7	0.52
August 19	30.8	20.6	0.00
August 20	25.6	19.0	0.92
August 21	23.2	17.1	0.00
August 22	22.2	15.6	0.00
August 23	23.3	14.8	0.00
August 24	24.4	18.5	0.00
August 25	21.9	16.9	0.00
August 26	22.3	16.2	0.02
August 27	21.1	16.1	0.00
August 28	21.7	14.4	0.00
August 29	24.5	16.4	0.00
August 30	24.5	20.0	0.00
August 31	28.7	20.1	0.02

September 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	28.8	19.6	0.00
September 2	29.2	21.1	0.00
September 3	26.8	21.6	0.00
September 4	23.7	19.6	0.00
September 5	24.4	16.2	0.60
September 6	29.9	21.1	0.02
September 7	32.2	21.8	0.00
September 8	30.2	22.8	0.13
September 9	26.3	19.6	0.18
September 10	22.4	17.7	0.00
September 11	23.1	14.6	0.93
September 12	17.6	13.7	3.86
September 13	16.0	13.6	0.90
September 14	23.6	11.8	0.00
September 15	26.5	16.7	0.00
September 16	27.7	17.8	0.00
September 17	28.2	18.0	0.00
September 18	27.5	19.0	0.00
September 19	25.1	16.1	0.00
September 20	17.1	14.2	0.00
September 21	18.9	12.9	n/a
September 22	20.9	13.0	0.00
September 23	21.0	14.5	0.00
September 24	21.1	15.1	0.00
September 25	18.4	16.0	0.00
September 26	17.4	14.4	0.00
September 27	23.9	14.6	0.03
September 28	22.1	18.3	0.24
September 29	21.6	15.2	1.08
September 30	17.1	13.2	0.00

October 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	15.3	11.0	0.00
October 2	13.3	10.9	0.00
October 3	12.3	9.4	0.00
October 4	14.0	10.3	0.02
October 5	15.1	10.3	0.00
October 6	n/a	13.1	n/a
October 7	20.3	12.5	0.00
October 8	15.5	11.2	0.33
October 9	17.7	12.0	0.15
October 10	15.8	11.2	0.00
October 11	20.2	12.6	0.00
October 12	23.4	16.1	0.02
October 13	18.5	13.3	0.00
October 14	14.5	8.4	0.00
October 15	19.2	7.5	0.24
October 16	14.7	6.8	0.31
October 17	8.8	4.9	0.00
October 18	9.1	3.4	0.00
October 19	15.3	2.5	0.00
October 20	17.8	12.8	0.15
October 21	n/a	12.5	n/a
October 22	18.7	9.5	0.00
October 23	9.6	5.9	0.00
October 24	17.1	6.9	0.39
October 25	14.9	8.9	0.00
October 26	10.6	5.7	0.00
October 27	10.6	5.2	0.00
October 28	16.8	8.8	4.28
October 29	13.4	7.4	0.00
October 30	9.7	4.2	0.00
October 31	11.6	4.2	0.05

November 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	15.0	8.6	0.14
November 2	12.7	7.0	0.00
November 3	17.3	10.0	0.00
November 4	11.1	8.0	0.00
November 5	21.7	9.8	0.00
November 6	19.7	10.1	0.27
November 7	12.9	7.3	0.00
November 8	10.6	5.5	0.00
November 9	11.6	4.1	0.00
November 10	n/a	3.4	n/a
November 11	12.4	7.8	0.07
November 12	14.5	7.1	0.04
November 13	10.1	4.8	0.00
November 14	6.8	4.0	0.00
November 15	13.4	6.4	0.00
November 16	11.0	7.0	0.00
November 17	10.5	4.5	0.00
November 18	17.6	8.9	0.00
November 19	17.6	6.0	0.00
November 20	n/a	4.2	n/a
November 21	9.0	2.4	0.27
November 22	5.6	-0.4	0.02
November 23	4.0	-1.9	0.00
November 24	6.5	2.1	0.00
November 25	10.9	1.3	0.00
November 26	16.5	9.8	0.00
November 27	15.6	3.1	0.78
November 28	3.2	2.1	0.61
November 29	4.4	0.7	0.00
November 30	4.7	1.2	0.00

December 2015 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	10.2	4.7	0.03
December 2	7.8	4.2	0.00
December 3	7.2	4.7	0.00
December 4	5.9	4.0	0.00
December 5	9.3	2.2	0.00
December 6	7.2	2.8	0.00
December 7	5.7	3.0	0.00
December 8	6.5	3.4	0.00
December 9	13.3	5.9	0.00
December 10	12.8	5.8	0.00
December 11	13.4	5.6	0.00
December 12	7.5	4.4	0.00
December 13	7.4	5.9	0.00
December 14	15.5	5.6	0.20
December 15	9.0	3.7	0.00
December 16	8.3	3.6	0.00
December 17	11.6	3.6	0.07
December 18	4.2	0.0	0.00
December 19	0.8	-1.6	0.00
December 20	8.0	-2.5	0.00
December 21	10.8	6.4	0.11
December 22	11.7	6.8	0.02
December 23	n/a	n/a	n/a
December 24	17.5	6.1	0.00
December 25	n/a	6.1	n/a
December 26	5.9	2.4	0.28
December 27	5.5	1.6	0.57
December 28	1.9	-3.1	1.16
December 29	6.9	0.2	0.47
December 30	4.2	2.1	0.00
December 31	2.5	1.2	0.00

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Weather Station Details

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