St. Catharines Weather in 2009

Historical record of St. Catharines, Ontario weather for the year 2009 based on NOAA data.

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2009 St. Catharines Weather Extremes
Highest temperature	30.6 °C	August 17
Lowest temperature	-13.8 °C	January 16
Highest daily low	24.6 °C	August 17
Lowest daily high	-9.8 °C	January 16
Most daily precipitation	5.3 cm	July 29
Total annual precipitation	95.8 cm	-

What was the hottest temperature in St. Catharines in 2009?

The highest temperature recorded in St. Catharines, Ontario in 2009 was 30.6 °C which happened on August 17.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Catharines in 2009

Rank	Temperature	Date
1	30.6 °C	Aug 17
2	30.3 °C	Aug 20
3	29.8 °C	Aug 16
4	29.7 °C	Jun 24
5	29.0 °C	Aug 18
6	28.5 °C	Jun 25
7	28.2 °C	Aug 10
8	27.7 °C	Aug 15
9	27.4 °C	Aug 9
10	27.2 °C	Aug 21

What was the coldest temperature in St. Catharines in 2009?

The lowest temperature recorded in St. Catharines, Ontario in 2009 was -13.8 °C which happened on Jan 16.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Catharines in 2009

Rank	Temperature	Date
1	-13.8 °C	January 16
2	-13.7 °C	February 5
2	-13.7 °C	January 21
4	-13.1 °C	January 14
5	-13.0 °C	January 17
6	-12.4 °C	January 26
7	-12.0 °C	January 15
7	-12.0 °C	January 1
9	-11.6 °C	January 24
10	-11.3 °C	March 3
10	-11.3 °C	January 25

January 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	-2.2	-12.0	1.16
January 2	n/a	n/a	n/a
January 3	-1.2	-4.8	1.23
January 4	0.7	-6.8	0.12
January 5	n/a	n/a	n/a
January 6	-0.8	-6.6	2.21
January 7	1.5	-2.0	n/a
January 8	-0.2	n/a	n/a
January 9	-3.2	-6.4	0.22
January 10	n/a	n/a	0.13
January 11	-3.2	-6.6	1.03
January 12	n/a	n/a	n/a
January 13	1.7	-9.3	1.19
January 14	-9.2	-13.1	0.40
January 15	-9.0	-12.0	1.36
January 16	-9.8	-13.8	1.64
January 17	-7.2	-13.0	1.71
January 18	-2.0	-7.2	1.07
January 19	-3.9	-6.8	0.70
January 20	-4.7	-9.5	0.38
January 21	-3.5	-13.7	2.28
January 22	-0.9	-3.7	0.56
January 23	5.1	-2.4	0.44
January 24	-2.3	-11.6	0.00
January 25	-6.3	-11.3	0.00
January 26	-5.5	-12.4	0.00
January 27	-2.8	-9.2	n/a
January 28	-2.3	-6.4	0.49
January 29	-2.0	-7.1	0.00
January 30	-1.7	-6.7	0.00
January 31	-1.7	-9.7	0.00

February 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	5.4	-1.8	0.00
February 2	3.3	-4.1	0.00
February 3	-1.7	-4.9	0.00
February 4	-4.0	-10.8	0.00
February 5	-7.6	-13.7	0.00
February 6	-0.2	-7.8	0.00
February 7	8.7	-4.5	0.00
February 8	4.8	-1.4	0.00
February 9	2.2	-2.6	0.00
February 10	11.5	0.1	0.00
February 11	10.8	3.9	1.33
February 12	8.4	0.4	0.61
February 13	0.5	-3.6	0.00
February 14	-0.9	-4.5	0.00
February 15	1.7	-3.2	0.00
February 16	0.3	-3.0	0.00
February 17	2.4	-5.0	0.00
February 18	2.7	-1.7	0.56
February 19	2.3	-6.1	0.00
February 20	-1.4	-5.7	0.00
February 21	0.6	-5.6	0.14
February 22	-0.6	-4.4	0.00
February 23	-3.8	-6.8	0.00
February 24	-2.9	-7.9	0.00
February 25	5.9	-5.3	0.00
February 26	6.8	1.8	0.19
February 27	11.5	-7.4	0.32
February 28	-5.7	-11.1	0.00

March 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	-3.5	-8.1	0.00
March 2	-7.3	-10.3	0.00
March 3	-3.6	-11.3	0.00
March 4	1.5	-8.5	0.00
March 5	12.2	-5.2	0.00
March 6	13.7	1.8	0.00
March 7	2.8	0.8	3.73
March 8	4.3	1.0	0.73
March 9	4.7	1.1	0.09
March 10	7.4	1.0	0.79
March 11	9.1	-2.5	0.92
March 12	-1.2	-5.0	0.00
March 13	-2.1	-6.0	0.00
March 14	7.8	-3.4	0.00
March 15	4.1	-1.3	0.00
March 16	3.2	-2.9	0.00
March 17	13.7	-0.4	0.00
March 18	13.1	4.7	0.00
March 19	5.5	-1.0	0.00
March 20	1.0	-2.1	0.00
March 21	6.3	-2.9	0.00
March 22	5.4	-0.6	0.00
March 23	0.3	-3.0	0.00
March 24	1.8	-3.2	0.00
March 25	12.3	0.7	0.00
March 26	8.3	2.6	0.06
March 27	10.7	1.0	0.00
March 28	5.9	0.8	0.00
March 29	10.0	3.1	1.95
March 30	4.3	1.0	0.00
March 31	4.9	-1.3	0.00

April 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	11.7	2.9	0.42
April 2	17.0	3.2	0.00
April 3	6.0	3.2	2.86
April 4	5.2	3.3	0.11
April 5	9.4	2.4	0.12
April 6	4.4	-0.6	0.65
April 7	1.2	-2.0	0.00
April 8	7.3	0.0	0.07
April 9	11.6	1.4	0.00
April 10	4.4	2.9	0.00
April 11	6.9	2.3	0.00
April 12	6.6	0.7	0.00
April 13	4.3	1.0	0.00
April 14	8.3	3.0	0.00
April 15	7.3	2.9	0.00
April 16	10.0	1.8	0.00
April 17	18.9	3.9	0.00
April 18	20.9	5.1	0.00
April 19	9.1	4.2	0.00
April 20	10.6	5.0	1.36
April 21	13.4	5.3	0.30
April 22	9.2	4.5	0.00
April 23	10.7	4.1	0.00
April 24	19.4	5.4	0.00
April 25	24.2	11.3	2.84
April 26	15.7	7.1	0.00
April 27	23.3	5.9	0.00
April 28	16.0	7.0	0.97
April 29	8.5	6.6	0.00
April 30	16.7	6.1	0.73

May 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	17.0	6.8	0.13
May 2	15.7	5.7	0.00
May 3	19.0	6.9	0.00
May 4	12.7	8.0	0.00
May 5	10.6	7.3	0.00
May 6	11.0	6.8	0.42
May 7	19.4	6.5	0.06
May 8	23.5	11.0	0.00
May 9	19.8	8.1	0.00
May 10	10.5	6.3	0.00
May 11	12.9	4.4	0.00
May 12	n/a	n/a	n/a
May 13	n/a	n/a	n/a
May 14	20.5	n/a	n/a
May 15	n/a	n/a	n/a
May 16	n/a	n/a	n/a
May 17	n/a	n/a	n/a
May 18	15.1	5.4	0.00
May 19	n/a	n/a	n/a
May 20	n/a	n/a	n/a
May 21	n/a	n/a	n/a
May 22	18.1	11.1	0.00
May 23	n/a	n/a	n/a
May 24	n/a	n/a	n/a
May 25	14.8	9.8	0.00
May 26	n/a	n/a	n/a
May 27	13.2	9.8	0.07
May 28	14.0	8.8	0.05
May 29	19.7	10.7	1.53
May 30	19.1	9.2	1.54
May 31	12.1	7.9	0.06

June 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	18.8	8.9	0.00
June 2	15.2	9.6	0.00
June 3	18.7	9.3	0.00
June 4	14.5	9.4	0.00
June 5	17.6	9.9	0.00
June 6	20.6	12.2	0.00
June 7	14.4	11.9	0.00
June 8	12.6	9.9	0.41
June 9	17.3	8.6	0.00
June 10	14.9	10.3	0.00
June 11	14.6	11.4	0.47
June 12	22.7	12.5	0.00
June 13	20.1	14.5	0.00
June 14	23.6	13.5	0.00
June 15	22.8	14.9	0.00
June 16	20.5	14.2	0.00
June 17	20.8	13.2	0.72
June 18	15.0	10.4	2.61
June 19	17.6	12.0	0.00
June 20	16.3	13.3	1.59
June 21	24.2	14.6	0.00
June 22	22.6	16.5	0.00
June 23	23.5	16.8	0.00
June 24	29.7	19.0	0.00
June 25	28.5	18.8	2.00
June 26	26.2	18.7	0.00
June 27	26.5	17.9	0.00
June 28	23.0	16.7	1.09
June 29	25.2	16.1	0.92
June 30	22.0	15.7	2.85

July 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	22.1	16.0	0.00
July 2	22.5	17.3	0.40
July 3	22.0	16.9	0.00
July 4	21.8	15.0	0.00
July 5	23.4	13.8	0.12
July 6	24.2	15.1	0.00
July 7	19.8	15.8	0.00
July 8	23.2	16.0	0.00
July 9	21.0	17.2	0.00
July 10	24.8	16.7	0.00
July 11	25.5	17.3	0.51
July 12	23.3	15.6	0.00
July 13	21.8	16.6	0.00
July 14	23.5	15.3	0.00
July 15	25.8	14.2	0.00
July 16	25.0	18.1	0.00
July 17	20.2	16.6	0.37
July 18	22.1	15.9	0.00
July 19	22.3	15.2	0.00
July 20	21.0	15.1	0.00
July 21	20.2	17.4	0.61
July 22	20.5	14.7	1.92
July 23	22.4	15.7	1.75
July 24	24.2	16.3	0.00
July 25	24.4	18.1	0.72
July 26	25.0	17.8	0.17
July 27	25.2	17.3	0.00
July 28	26.6	20.3	0.00
July 29	21.7	17.0	5.30
July 30	26.4	15.5	0.00
July 31	26.9	18.3	0.00

August 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	26.9	16.4	0.17
August 2	24.7	17.5	0.29
August 3	25.1	17.0	0.00
August 4	26.7	18.8	0.71
August 5	24.5	16.6	0.00
August 6	24.2	16.0	0.00
August 7	23.1	17.9	0.00
August 8	22.9	16.4	0.49
August 9	27.4	19.3	3.83
August 10	28.2	20.5	0.03
August 11	26.6	19.6	0.00
August 12	25.0	18.9	0.00
August 13	26.6	19.3	0.00
August 14	25.6	19.5	0.00
August 15	27.7	20.9	0.00
August 16	29.8	21.2	0.00
August 17	30.6	24.6	0.00
August 18	29.0	23.4	0.00
August 19	24.9	20.7	0.00
August 20	30.3	21.1	1.12
August 21	27.2	20.2	0.96
August 22	23.3	18.8	2.58
August 23	23.8	18.2	0.00
August 24	24.1	17.5	0.00
August 25	25.2	16.5	0.00
August 26	23.4	18.2	0.15
August 27	19.9	16.7	0.00
August 28	18.2	15.3	0.00
August 29	20.1	15.2	0.42
August 30	18.7	14.9	0.00
August 31	20.9	12.6	0.00

September 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	21.4	13.5	0.00
September 2	21.3	14.3	0.00
September 3	22.7	16.5	0.00
September 4	24.2	15.9	0.00
September 5	22.6	17.2	0.00
September 6	23.1	17.0	0.00
September 7	21.6	15.7	0.00
September 8	21.2	17.6	0.00
September 9	20.8	17.0	0.00
September 10	22.5	15.7	0.00
September 11	18.9	14.1	0.00
September 12	21.2	16.1	0.00
September 13	24.9	15.2	0.00
September 14	23.8	16.7	0.00
September 15	21.9	15.6	0.00
September 16	17.8	14.5	0.00
September 17	19.4	13.9	0.00
September 18	21.5	14.1	0.00
September 19	16.2	11.5	0.00
September 20	19.2	9.9	0.00
September 21	23.7	16.0	0.13
September 22	23.9	20.8	0.00
September 23	26.3	19.2	0.06
September 24	21.6	17.3	0.00
September 25	17.7	10.9	0.00
September 26	19.8	10.9	0.73
September 27	20.9	15.8	0.10
September 28	18.9	13.5	0.66
September 29	17.0	10.3	0.57
September 30	13.0	9.0	0.00

October 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	12.9	8.7	0.00
October 2	14.8	8.5	1.01
October 3	19.2	11.1	0.00
October 4	16.2	11.0	0.04
October 5	15.3	10.1	0.03
October 6	16.5	8.4	0.37
October 7	15.2	10.5	0.00
October 8	17.4	7.9	n/a
October 9	12.1	8.6	0.66
October 10	14.6	8.4	0.00
October 11	10.6	4.0	0.00
October 12	8.6	2.7	0.00
October 13	11.3	5.8	0.00
October 14	6.2	3.2	0.00
October 15	6.4	3.0	0.00
October 16	7.1	3.0	0.00
October 17	7.0	5.3	0.00
October 18	9.3	4.0	0.00
October 19	13.8	3.3	0.00
October 20	16.0	11.3	0.00
October 21	15.4	9.7	0.00
October 22	15.6	5.9	0.00
October 23	15.0	5.1	0.95
October 24	16.3	7.9	0.00
October 25	13.2	6.8	0.00
October 26	10.7	5.5	0.00
October 27	14.7	8.1	0.00
October 28	10.4	8.8	1.55
October 29	10.5	9.3	0.00
October 30	18.0	9.7	0.11
October 31	17.6	8.4	0.59

November 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	10.4	5.6	0.00
November 2	13.0	4.7	0.00
November 3	9.9	5.9	0.00
November 4	7.2	3.3	0.24
November 5	7.7	4.3	0.18
November 6	4.9	2.4	0.00
November 7	16.4	2.8	0.00
November 8	12.1	8.4	0.00
November 9	16.8	8.3	0.00
November 10	11.1	8.1	0.00
November 11	8.7	4.4	0.00
November 12	9.2	2.9	0.00
November 13	9.1	2.3	0.00
November 14	11.1	5.7	0.00
November 15	11.8	5.9	0.00
November 16	7.3	4.5	0.00
November 17	7.2	3.7	0.00
November 18	9.4	2.9	0.00
November 19	10.7	6.8	1.41
November 20	9.9	5.8	0.00
November 21	10.3	5.4	0.00
November 22	9.5	4.9	0.00
November 23	10.5	3.1	0.00
November 24	9.2	7.3	0.00
November 25	12.1	8.4	0.17
November 26	10.9	3.8	0.00
November 27	6.8	2.3	0.20
November 28	5.8	2.1	0.00
November 29	8.5	2.5	0.63
November 30	7.0	3.5	0.41

December 2009 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	7.9	1.6	0.00
December 2	12.0	5.4	1.47
December 3	7.9	3.3	0.26
December 4	4.1	0.6	0.00
December 5	1.7	-1.1	0.00
December 6	4.3	-0.6	0.00
December 7	2.7	0.5	n/a
December 8	2.6	0.6	0.00
December 9	7.8	0.5	1.86
December 10	1.9	-6.4	0.00
December 11	-3.7	-6.9	0.00
December 12	3.3	-5.8	0.00
December 13	4.8	0.4	0.29
December 14	5.6	1.8	0.17
December 15	5.0	-1.6	0.03
December 16	-1.2	-4.9	0.00
December 17	-2.1	-7.8	0.00
December 18	-2.6	-7.6	0.00
December 19	-1.3	-4.0	0.00
December 20	1.1	-2.3	0.00
December 21	0.0	-1.8	0.00
December 22	n/a	n/a	n/a
December 23	-2.1	-5.7	0.00
December 24	-1.0	-4.5	0.00
December 25	3.6	-1.8	0.98
December 26	5.0	-1.8	0.39
December 27	1.8	-2.3	0.10
December 28	-0.3	-6.6	0.12
December 29	-3.9	-10.8	0.00
December 30	-0.7	-6.1	0.00
December 31	2.8	-0.7	0.06

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Weather Station Details

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