St. Catharines Weather in 2020

Historical record of St. Catharines, Ontario weather for the year 2020 based on NOAA data.

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2020 St. Catharines Weather Extremes
Highest temperature	32.5 °C	July 10
Lowest temperature	-13.4 °C	February 14
Highest daily low	23.4 °C	July 27
Lowest daily high	-7.7 °C	February 14
Most daily precipitation	2.2 cm	August 2

What was the hottest temperature in St. Catharines in 2020?

The highest temperature recorded in St. Catharines, Ontario in 2020 was 32.5 °C which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Catharines in 2020

Rank	Temperature	Date
1	32.5 °C	Jul 10
1	32.5 °C	Jul 8
3	32.0 °C	Jul 27
3	32.0 °C	Jul 2
5	31.9 °C	Aug 23
5	31.9 °C	Jul 7
7	31.6 °C	Jul 3
8	31.5 °C	Jul 26
8	31.5 °C	Jul 18
10	31.3 °C	Aug 24
10	31.3 °C	Jun 10

What was the coldest temperature in St. Catharines in 2020?

The lowest temperature recorded in St. Catharines, Ontario in 2020 was -13.4 °C which happened on Feb 14.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Catharines in 2020

Rank	Temperature	Date
1	-13.4 °C	February 14
2	-9.9 °C	February 9
3	-9.6 °C	January 17
4	-9.2 °C	February 8
5	-9.1 °C	February 13
6	-8.2 °C	January 20
7	-8.1 °C	February 29
7	-8.1 °C	February 15
9	-7.5 °C	January 18
10	-6.9 °C	February 21

January 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	3.4	-0.5	n/a
January 2	7.8	3.4	n/a
January 3	7.1	3.3	n/a
January 4	3.5	0.6	n/a
January 5	3.0	-0.3	n/a
January 6	3.4	0.4	n/a
January 7	4.9	-0.5	n/a
January 8	1.4	-5.1	n/a
January 9	6.7	-6.1	n/a
January 10	8.4	3.5	n/a
January 11	15.6	2.6	n/a
January 12	2.9	-2.0	n/a
January 13	3.0	-2.0	n/a
January 14	4.5	-0.6	n/a
January 15	4.8	2.7	n/a
January 16	2.9	-6.1	n/a
January 17	-5.9	-9.6	n/a
January 18	4.4	-7.5	n/a
January 19	2.0	-6.4	n/a
January 20	-2.1	-8.2	n/a
January 21	-0.8	-4.5	n/a
January 22	0.6	-2.2	n/a
January 23	1.7	-2.0	n/a
January 24	2.6	0.5	n/a
January 25	4.1	1.2	n/a
January 26	4.2	1.1	n/a
January 27	2.8	1.2	n/a
January 28	2.1	0.2	n/a
January 29	0.2	-4.6	n/a
January 30	-0.9	-5.7	n/a
January 31	0.5	-2.0	n/a

February 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	3.0	-1.0	n/a
February 2	2.4	0.3	n/a
February 3	6.0	1.3	n/a
February 4	3.2	-1.1	n/a
February 5	-1.1	-4.3	n/a
February 6	-0.4	-2.9	n/a
February 7	-1.1	-4.4	n/a
February 8	-4.2	-9.2	n/a
February 9	2.7	-9.9	n/a
February 10	5.0	1.2	n/a
February 11	3.6	-0.2	n/a
February 12	2.5	-1.7	n/a
February 13	1.4	-9.1	n/a
February 14	-7.7	-13.4	n/a
February 15	2.6	-8.1	n/a
February 16	4.6	-0.7	n/a
February 17	0.1	-1.8	n/a
February 18	5.8	-1.1	n/a
February 19	1.1	-3.6	n/a
February 20	-2.0	-5.9	n/a
February 21	1.5	-6.9	n/a
February 22	5.0	-0.9	n/a
February 23	8.4	1.9	n/a
February 24	6.9	2.3	n/a
February 25	3.2	1.7	n/a
February 26	2.7	-1.5	n/a
February 27	-1.4	-4.7	n/a
February 28	-1.9	-5.4	n/a
February 29	-1.7	-8.1	n/a

March 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	5.0	-5.9	n/a
March 2	7.8	3.3	n/a
March 3	4.1	1.9	n/a
March 4	6.8	1.6	n/a
March 5	6.5	-0.1	n/a
March 6	2.5	0.8	n/a
March 7	3.6	-2.6	n/a
March 8	11.4	0.8	n/a
March 9	13.8	7.3	n/a
March 10	14.8	1.1	n/a
March 11	3.9	-1.1	n/a
March 12	4.2	1.4	n/a
March 13	10.0	3.3	n/a
March 14	3.8	0.8	n/a
March 15	2.1	-0.9	n/a
March 16	2.9	-2.5	n/a
March 17	7.2	1.2	n/a
March 18	3.5	0.5	n/a
March 19	4.2	2.9	n/a
March 20	16.4	-0.8	n/a
March 21	-0.5	-5.2	n/a
March 22	2.0	-2.6	n/a
March 23	5.4	0.8	n/a
March 24	4.5	2.6	n/a
March 25	7.9	2.0	n/a
March 26	14.0	3.3	n/a
March 27	6.0	3.4	n/a
March 28	4.9	4.1	n/a
March 29	14.7	4.4	n/a
March 30	9.0	4.8	n/a
March 31	5.4	4.3	n/a

April 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	7.9	3.8	n/a
April 2	13.6	4.0	n/a
April 3	10.7	3.9	n/a
April 4	9.3	5.1	n/a
April 5	11.0	3.6	n/a
April 6	14.2	3.0	n/a
April 7	10.5	5.4	n/a
April 8	13.9	5.0	n/a
April 9	9.3	2.6	n/a
April 10	7.5	3.1	n/a
April 11	8.8	1.8	n/a
April 12	14.4	6.1	n/a
April 13	14.6	4.7	n/a
April 14	7.4	1.2	n/a
April 15	6.3	0.4	n/a
April 16	5.8	0.3	n/a
April 17	6.6	0.9	n/a
April 18	10.0	1.7	n/a
April 19	11.5	2.0	n/a
April 20	7.2	1.3	n/a
April 21	10.0	0.8	n/a
April 22	6.2	0.0	n/a
April 23	5.0	1.7	n/a
April 24	6.6	4.6	n/a
April 25	7.4	2.0	n/a
April 26	6.9	5.1	n/a
April 27	13.6	5.3	n/a
April 28	11.3	6.8	n/a
April 29	19.8	7.0	n/a
April 30	14.0	7.3	n/a

May 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	13.0	7.4	n/a
May 2	16.6	5.9	n/a
May 3	17.0	5.9	n/a
May 4	10.8	4.7	n/a
May 5	8.9	3.7	n/a
May 6	n/a	n/a	n/a
May 7	15.5	5.0	0.03
May 8	6.1	1.1	0.00
May 9	7.5	0.0	0.00
May 10	8.1	4.0	0.00
May 11	7.6	3.2	0.16
May 12	9.7	3.1	0.00
May 13	12.0	2.7	0.00
May 14	9.4	5.7	0.18
May 15	21.1	7.1	0.84
May 16	12.3	7.6	0.00
May 17	12.0	7.7	0.45
May 18	10.3	8.0	0.24
May 19	11.1	8.3	0.00
May 20	16.5	7.5	0.00
May 21	12.6	8.0	0.00
May 22	15.5	8.5	0.00
May 23	18.2	12.3	0.00
May 24	23.8	12.4	0.00
May 25	30.0	14.6	0.00
May 26	22.5	14.1	0.00
May 27	27.2	14.2	0.00
May 28	23.1	15.3	1.77
May 29	22.9	12.2	0.36
May 30	17.8	10.1	0.00
May 31	15.2	8.8	0.00

June 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	21.0	10.9	0.00
June 2	24.6	13.5	0.48
June 3	25.0	12.5	0.28
June 4	27.9	15.6	0.00
June 5	27.8	16.0	0.00
June 6	25.2	14.4	0.00
June 7	19.4	13.4	0.00
June 8	21.9	12.4	0.00
June 9	30.6	15.8	0.00
June 10	31.3	17.2	0.60
June 11	22.8	16.9	0.00
June 12	19.6	11.1	0.00
June 13	17.4	11.2	0.00
June 14	16.2	11.1	0.00
June 15	16.7	12.3	0.00
June 16	17.4	10.0	0.00
June 17	21.1	12.1	0.00
June 18	21.1	15.1	0.00
June 19	25.8	16.4	0.00
June 20	25.8	17.9	0.00
June 21	28.7	19.1	0.00
June 22	26.6	21.4	0.00
June 23	27.6	18.6	0.28
June 24	24.3	16.9	0.00
June 25	25.7	15.6	0.00
June 26	28.1	18.3	0.00
June 27	26.9	19.5	1.10
June 28	28.3	18.6	0.00
June 29	29.7	19.0	0.00
June 30	24.5	20.1	0.00

July 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	28.8	19.2	0.00
July 2	32.0	20.8	0.00
July 3	31.6	22.7	0.00
July 4	29.1	22.0	0.00
July 5	30.3	20.7	0.00
July 6	25.5	21.1	0.00
July 7	31.9	21.4	0.00
July 8	32.5	23.3	0.00
July 9	30.9	22.7	0.80
July 10	32.5	22.3	0.09
July 11	27.4	22.0	0.98
July 12	28.9	20.0	0.00
July 13	27.6	19.1	0.00
July 14	27.4	19.5	0.00
July 15	29.4	19.4	0.00
July 16	26.3	22.5	0.62
July 17	29.6	21.9	0.00
July 18	31.5	21.6	0.00
July 19	30.2	22.9	0.11
July 20	30.5	21.0	0.00
July 21	23.7	19.8	0.00
July 22	28.3	21.0	0.38
July 23	25.5	20.6	0.00
July 24	25.0	20.1	0.00
July 25	29.3	19.8	0.00
July 26	31.5	21.2	0.00
July 27	32.0	23.4	0.00
July 28	30.1	21.6	0.00
July 29	29.4	22.0	0.00
July 30	29.4	20.9	0.00
July 31	26.6	21.7	0.00

August 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	27.4	20.4	0.00
August 2	27.6	16.6	2.15
August 3	22.8	16.1	0.00
August 4	24.1	17.9	0.28
August 5	25.3	16.9	0.00
August 6	22.9	16.6	0.00
August 7	23.5	17.2	0.00
August 8	27.5	17.3	0.00
August 9	29.2	20.3	0.00
August 10	n/a	n/a	n/a
August 11	n/a	n/a	n/a
August 12	27.6	17.9	0.00
August 13	26.0	19.1	0.00
August 14	24.3	21.0	0.00
August 15	24.8	20.4	0.00
August 16	28.0	19.9	0.09
August 17	25.9	17.4	1.25
August 18	25.7	18.2	0.00
August 19	23.7	17.3	0.00
August 20	26.6	16.5	0.00
August 21	30.1	19.6	0.00
August 22	30.2	20.2	0.00
August 23	31.9	20.4	0.00
August 24	31.3	22.2	0.00
August 25	29.9	20.7	0.00
August 26	21.6	18.3	1.23
August 27	28.0	20.1	0.00
August 28	n/a	n/a	n/a
August 29	27.1	19.1	0.00
August 30	22.3	17.6	0.00
August 31	25.6	16.2	0.00

September 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	28.2	20.2	0.00
September 2	26.2	19.3	0.00
September 3	27.9	17.3	0.00
September 4	25.0	16.7	0.00
September 5	22.6	15.0	0.00
September 6	20.5	13.9	0.00
September 7	23.4	17.7	0.31
September 8	18.0	15.5	0.15
September 9	18.5	16.4	0.00
September 10	22.3	15.7	0.00
September 11	15.9	12.4	0.00
September 12	21.3	11.7	0.00
September 13	24.3	16.7	1.13
September 14	19.1	13.1	0.00
September 15	20.0	10.6	0.00
September 16	22.3	16.3	0.00
September 17	18.5	14.0	0.00
September 18	15.1	11.8	0.00
September 19	13.8	9.6	0.00
September 20	15.7	9.7	0.00
September 21	20.4	9.7	0.00
September 22	20.7	10.5	0.00
September 23	25.7	14.7	0.00
September 24	23.8	15.9	0.00
September 25	21.9	16.2	0.00
September 26	26.7	16.8	0.00
September 27	26.3	19.8	0.00
September 28	26.6	16.0	0.00
September 29	19.0	12.3	0.38
September 30	18.4	11.6	0.19

October 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	19.5	11.5	0.00
October 2	17.2	9.2	0.25
October 3	13.7	8.1	0.00
October 4	15.9	9.2	0.08
October 5	16.3	10.4	0.00
October 6	18.8	11.1	0.00
October 7	18.8	12.3	0.39
October 8	17.9	10.0	0.00
October 9	19.9	8.7	0.00
October 10	22.7	12.1	0.00
October 11	12.9	10.6	0.00
October 12	20.2	11.6	0.00
October 13	16.6	9.1	0.75
October 14	18.0	8.6	0.00
October 15	20.1	9.7	0.49
October 16	13.2	6.9	0.00
October 17	14.7	7.2	0.12
October 18	15.9	9.6	0.06
October 19	10.8	8.2	1.03
October 20	10.4	7.8	0.51
October 21	19.0	10.1	0.19
October 22	12.0	10.0	0.31
October 23	25.4	10.1	0.96
October 24	10.6	6.2	0.02
October 25	8.4	5.9	0.00
October 26	8.9	6.5	0.00
October 27	9.7	5.9	0.27
October 28	12.7	5.1	0.00
October 29	10.7	5.8	0.08
October 30	6.3	2.5	0.00
October 31	8.6	0.0	0.00

November 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	12.9	3.3	0.74
November 2	7.8	1.8	0.07
November 3	7.9	5.5	0.00
November 4	18.7	7.1	0.00
November 5	17.7	11.5	0.00
November 6	17.4	11.9	0.00
November 7	19.3	10.5	0.00
November 8	20.0	9.0	0.00
November 9	14.2	10.0	0.00
November 10	22.2	10.2	0.00
November 11	20.3	6.9	0.00
November 12	10.2	5.0	0.00
November 13	10.6	3.4	0.00
November 14	8.8	3.5	0.00
November 15	15.1	4.7	0.36
November 16	7.1	5.1	0.00
November 17	6.1	-0.5	0.00
November 18	4.1	-1.4	0.00
November 19	15.0	3.3	0.00
November 20	14.8	7.4	0.00
November 21	7.7	4.7	0.00
November 22	4.8	1.7	1.35
November 23	5.4	2.2	0.00
November 24	3.7	1.1	0.12
November 25	10.1	1.7	0.38
November 26	11.7	7.0	0.23
November 27	8.1	6.4	0.00
November 28	7.5	5.0	0.00
November 29	10.4	5.3	0.00
November 30	7.4	2.1	1.74

December 2020 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	2.2	-0.1	0.81
December 2	5.7	0.5	0.06
December 3	8.0	3.4	0.00
December 4	6.6	3.1	0.16
December 5	3.8	-1.0	0.00
December 6	2.9	-1.3	0.00
December 7	n/a	n/a	n/a
December 8	3.2	-2.0	0.00
December 9	4.7	1.5	0.27
December 10	6.8	2.5	0.00
December 11	8.2	2.6	0.00
December 12	12.7	5.0	0.29
December 13	7.6	1.2	0.00
December 14	3.7	0.5	0.00
December 15	0.6	-3.2	0.00
December 16	-1.6	-4.5	0.02
December 17	-1.8	-3.4	0.04
December 18	0.1	-3.5	0.02
December 19	3.7	-1.4	0.00
December 20	5.1	1.9	0.22
December 21	5.0	1.4	0.02
December 22	5.1	1.9	0.00
December 23	9.2	1.2	0.00
December 24	11.3	-0.3	1.54
December 25	0.6	-4.0	0.51
December 26	-0.5	-3.7	0.05
December 27	4.8	-1.0	0.00
December 28	6.1	0.2	0.25
December 29	0.6	-2.4	0.00
December 30	7.0	-2.9	0.50
December 31	3.1	-1.0	0.00

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Weather Station Details

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