St. Catharines Weather in 1999

Historical record of St. Catharines, Ontario weather for the year 1999 based on NOAA data.

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1999 St. Catharines Weather Extremes
Highest temperature	33.5 °C	July 30
Lowest temperature	-13.9 °C	January 13
Highest daily low	24.4 °C	July 30
Lowest daily high	-9.4 °C	January 14
Most daily precipitation	6.3 cm	September 29
Total annual precipitation	56.3 cm	-

What was the hottest temperature in St. Catharines in 1999?

The highest temperature recorded in St. Catharines, Ontario in 1999 was 33.5 °C which happened on July 30.

Highest Temperatures: All-Time By Year

Highest Temperatures in St. Catharines in 1999

Rank	Temperature	Date
1	33.5 °C	Jul 30
2	32.6 °C	Jul 17
3	32.5 °C	Jul 5
4	31.9 °C	Jul 23
4	31.9 °C	Jul 4
6	31.5 °C	Jul 16
7	31.4 °C	Jul 27
8	31.3 °C	Jul 24
9	31.0 °C	Jun 7
10	30.6 °C	Jul 26

What was the coldest temperature in St. Catharines in 1999?

The lowest temperature recorded in St. Catharines, Ontario in 1999 was -13.9 °C which happened on Jan 13.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in St. Catharines in 1999

Rank	Temperature	Date
1	-13.9 °C	January 13
2	-13.2 °C	January 1
3	-13.1 °C	January 14
4	-12.5 °C	January 10
4	-12.5 °C	January 2
6	-12.3 °C	January 11
7	-11.2 °C	January 5
8	-10.9 °C	February 22
9	-10.7 °C	January 15
10	-10.5 °C	February 23

January 1999 St. Catharines Weather

Day	High (°C)	Low (°C)
January 1	-6.3	-13.2
January 2	-6.4	-12.5
January 3	0.9	-7.3
January 4	-5.5	-8.7
January 5	-5.5	-11.2
January 6	-1.6	-9.1
January 7	-5.0	-9.9
January 8	-5.4	-10.4
January 9	-3.3	-7.7
January 10	-5.6	-12.5
January 11	-8.6	-12.3
January 12	-2.6	-9.3
January 13	-4.6	-13.9
January 14	-9.4	-13.1
January 15	-5.0	-10.7
January 16	2.6	-9.0
January 17	9.1	-1.7
January 18	8.2	0.6
January 19	1.0	-0.8
January 20	3.7	-3.7
January 21	4.0	-3.1
January 22	2.0	0.1
January 23	11.7	1.5
January 24	7.8	0.7
January 25	0.8	-1.5
January 26	0.3	-3.4
January 27	1.6	-3.6
January 28	0.4	-4.5
January 29	-0.6	-4.6
January 30	1.6	-4.4
January 31	-0.9	-6.8

February 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	1.6	-6.9	0.00
February 2	5.4	0.2	0.00
February 3	6.3	0.2	0.00
February 4	6.1	-2.5	0.00
February 5	-0.3	-3.8	0.00
February 6	4.4	-1.1	0.00
February 7	1.4	-1.7	0.00
February 8	1.4	-3.0	0.00
February 9	7.8	0.1	0.00
February 10	6.5	-0.8	0.00
February 11	15.9	-1.3	0.00
February 12	16.8	-2.4	0.00
February 13	-1.9	-6.3	n/a
February 14	1.2	-5.7	0.00
February 15	6.2	-1.8	0.00
February 16	9.8	-0.9	0.00
February 17	5.4	1.1	0.00
February 18	1.4	-3.4	0.00
February 19	-2.2	-4.7	0.00
February 20	-1.6	-4.5	0.00
February 21	-3.6	-8.6	0.00
February 22	-7.2	-10.9	0.00
February 23	-4.4	-10.5	0.00
February 24	0.1	-7.3	0.00
February 25	1.1	-1.7	0.00
February 26	6.3	-1.7	0.00
February 27	2.9	-2.7	0.00
February 28	7.0	1.5	0.00

March 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	2.7	-0.1	0.00
March 2	5.5	-1.3	n/a
March 3	2.1	-2.1	0.00
March 4	-0.3	-3.0	0.00
March 5	-2.6	-5.2	0.00
March 6	-3.1	-8.4	0.00
March 7	-5.3	-10.0	0.00
March 8	-2.6	-7.6	0.00
March 9	-2.0	-7.1	0.00
March 10	-0.3	-4.8	n/a
March 11	0.4	-1.9	0.00
March 12	-0.2	-3.6	0.00
March 13	1.3	-3.0	0.00
March 14	0.4	-2.3	0.00
March 15	5.2	-0.9	0.00
March 16	6.8	-1.1	0.00
March 17	11.9	0.4	0.00
March 18	6.7	1.0	0.00
March 19	4.1	0.0	0.00
March 20	5.1	-0.3	0.00
March 21	6.0	0.2	0.00
March 22	2.7	0.6	0.00
March 23	7.0	-0.8	0.00
March 24	6.8	0.1	0.00
March 25	4.2	-1.0	0.00
March 26	6.3	-0.6	0.00
March 27	6.2	-1.4	0.00
March 28	12.6	0.3	0.00
March 29	11.6	3.3	0.00
March 30	14.5	2.9	0.00
March 31	17.6	6.7	0.00

April 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	12.3	9.0	0.00
April 2	9.7	3.5	0.00
April 3	7.7	3.5	0.00
April 4	6.8	2.7	0.00
April 5	5.1	2.2	0.00
April 6	20.1	3.9	0.00
April 7	15.1	5.4	0.00
April 8	12.5	6.5	0.00
April 9	6.8	3.9	0.00
April 10	7.4	3.3	0.00
April 11	6.3	1.5	0.00
April 12	8.9	3.2	0.00
April 13	11.0	3.4	0.00
April 14	13.8	n/a	n/a
April 15	9.9	5.7	0.00
April 16	8.0	4.7	0.50
April 17	9.3	4.9	0.08
April 18	12.0	n/a	n/a
April 19	11.3	5.0	0.12
April 20	12.6	4.5	0.00
April 21	11.9	5.4	0.02
April 22	8.9	4.9	2.38
April 23	6.7	4.5	0.06
April 24	10.0	2.6	0.00
April 25	14.8	2.7	0.00
April 26	16.7	7.3	0.00
April 27	8.5	5.5	0.00
April 28	9.6	4.2	0.00
April 29	11.4	4.8	0.00
April 30	12.8	6.7	0.00

May 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	13.8	7.2	0.00
May 2	13.8	7.7	0.00
May 3	12.6	7.9	0.00
May 4	15.1	9.3	0.00
May 5	13.5	8.8	0.00
May 6	26.8	8.8	0.06
May 7	20.0	12.5	0.14
May 8	20.2	10.6	0.66
May 9	13.4	8.8	0.02
May 10	16.9	8.2	0.00
May 11	12.2	9.6	0.00
May 12	12.2	7.9	0.00
May 13	11.3	7.9	0.00
May 14	11.1	7.6	0.00
May 15	12.9	8.5	0.00
May 16	19.6	9.0	0.00
May 17	28.3	10.2	0.00
May 18	28.5	14.4	1.12
May 19	17.2	11.1	0.10
May 20	17.8	8.7	0.00
May 21	17.5	11.2	0.00
May 22	17.6	13.2	0.20
May 23	14.8	12.5	0.04
May 24	15.6	9.8	1.96
May 25	12.5	9.1	0.30
May 26	14.0	9.3	0.04
May 27	18.2	8.4	0.00
May 28	25.3	13.0	0.00
May 29	24.8	14.0	0.00
May 30	30.0	15.2	0.00
May 31	24.5	15.7	0.04

June 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	23.1	18.7	0.26
June 2	24.7	17.0	1.12
June 3	17.2	13.0	0.00
June 4	20.4	11.8	0.00
June 5	21.2	13.5	0.00
June 6	28.2	15.2	0.00
June 7	31.0	19.3	0.00
June 8	24.7	17.5	0.00
June 9	25.0	16.4	0.00
June 10	20.5	16.5	0.00
June 11	22.5	16.8	0.00
June 12	25.3	16.8	0.00
June 13	27.0	16.9	0.00
June 14	22.5	14.5	0.84
June 15	16.9	10.9	0.00
June 16	16.6	11.4	n/a
June 17	19.4	13.0	0.00
June 18	22.0	13.1	0.00
June 19	20.7	13.4	0.00
June 20	21.4	16.6	0.00
June 21	21.6	16.7	0.00
June 22	22.3	15.3	0.00
June 23	28.3	18.9	0.00
June 24	27.8	21.3	0.00
June 25	29.1	18.7	1.20
June 26	30.0	18.8	0.00
June 27	25.1	20.2	0.46
June 28	26.9	21.5	0.00
June 29	23.1	16.7	0.70
June 30	19.9	13.9	0.00

July 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	29.7	15.4	0.10
July 2	27.9	19.8	0.00
July 3	30.1	19.2	0.00
July 4	31.9	22.9	0.00
July 5	32.5	23.7	0.00
July 6	28.4	21.2	0.06
July 7	26.7	20.4	0.32
July 8	25.2	17.4	0.00
July 9	27.1	17.1	0.10
July 10	23.2	16.8	0.00
July 11	24.9	16.1	0.00
July 12	22.3	16.7	0.00
July 13	25.1	17.9	0.00
July 14	29.8	18.9	0.00
July 15	30.1	20.8	0.00
July 16	31.5	21.9	0.00
July 17	32.6	20.6	1.68
July 18	29.8	20.6	0.06
July 19	n/a	n/a	n/a
July 20	21.8	18.9	0.32
July 21	23.6	18.8	0.00
July 22	28.4	19.6	0.00
July 23	31.9	20.9	0.00
July 24	31.3	19.2	4.20
July 25	27.5	20.3	0.00
July 26	30.6	21.4	0.00
July 27	31.4	22.5	0.00
July 28	28.7	21.3	0.00
July 29	n/a	n/a	n/a
July 30	33.5	24.4	0.00
July 31	29.7	22.2	1.94

August 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	27.0	20.7	0.00
August 2	25.2	18.8	0.00
August 3	26.7	19.2	0.00
August 4	24.8	19.3	0.44
August 5	n/a	n/a	n/a
August 6	n/a	n/a	n/a
August 7	22.1	15.7	0.88
August 8	24.0	17.2	0.36
August 9	21.9	16.4	0.00
August 10	19.2	17.1	0.08
August 11	24.4	18.5	0.04
August 12	28.9	18.3	0.00
August 13	27.4	20.4	1.44
August 14	20.6	17.5	0.00
August 15	23.1	16.2	0.00
August 16	24.8	16.1	0.00
August 17	25.5	19.4	0.00
August 18	23.4	18.2	0.00
August 19	22.2	18.4	0.10
August 20	20.5	17.1	1.52
August 21	20.9	16.9	0.00
August 22	n/a	n/a	n/a
August 23	23.6	18.3	0.00
August 24	24.3	20.0	0.00
August 25	25.3	20.3	0.00
August 26	24.2	19.7	0.48
August 27	26.1	19.0	0.04
August 28	29.0	20.3	0.02
August 29	20.9	16.2	0.00
August 30	19.0	14.6	0.00
August 31	21.4	13.7	0.00

September 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	23.2	15.5	0.00
September 2	25.4	16.9	0.00
September 3	26.8	17.4	0.00
September 4	24.6	18.8	0.00
September 5	24.3	21.6	0.00
September 6	30.0	21.4	0.12
September 7	21.8	20.7	2.34
September 8	26.6	20.6	0.42
September 9	24.7	18.9	0.78
September 10	22.1	16.4	0.00
September 11	22.2	16.6	0.00
September 12	28.8	15.5	0.00
September 13	22.9	18.4	0.42
September 14	23.1	15.1	0.00
September 15	23.8	13.5	0.00
September 16	18.6	15.1	0.00
September 17	20.7	14.8	0.00
September 18	20.4	12.3	0.00
September 19	23.4	13.7	0.00
September 20	21.8	11.2	0.56
September 21	13.7	10.4	0.02
September 22	17.9	10.4	0.00
September 23	24.1	12.3	0.00
September 24	19.2	13.9	0.68
September 25	16.1	11.7	0.04
September 26	20.8	10.6	0.00
September 27	26.5	18.8	0.00
September 28	25.9	19.4	0.00
September 29	22.8	13.5	6.30
September 30	16.7	12.7	0.20

October 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	17.0	11.2	0.00
October 2	18.6	11.2	0.06
October 3	n/a	n/a	n/a
October 4	n/a	n/a	n/a
October 5	14.1	6.3	0.18
October 6	13.5	5.6	0.00
October 7	7.8	4.6	0.00
October 8	18.7	5.4	0.26
October 9	19.1	14.0	0.00
October 10	19.3	14.3	0.20
October 11	17.1	11.8	0.00
October 12	13.9	7.7	0.00
October 13	22.0	6.4	5.34
October 14	11.6	6.2	0.30
October 15	18.0	8.0	0.00
October 16	23.4	14.6	0.00
October 17	18.3	9.0	1.12
October 18	10.5	7.7	0.00
October 19	12.9	5.3	0.00
October 20	12.7	8.1	0.00
October 21	13.4	6.1	0.00
October 22	13.5	7.6	0.60
October 23	9.4	6.2	0.02
October 24	8.7	5.5	0.00
October 25	13.7	5.8	0.00
October 26	13.3	8.1	0.00
October 27	8.1	3.8	0.00
October 28	17.3	3.5	0.00
October 29	11.3	n/a	0.00
October 30	21.8	8.0	n/a
October 31	16.2	9.9	0.06

November 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	18.2	7.6	0.00
November 2	17.7	4.7	5.90
November 3	5.0	2.8	0.21
November 4	n/a	n/a	n/a
November 5	n/a	n/a	n/a
November 6	9.7	5.4	0.00
November 7	6.1	3.6	0.00
November 8	11.8	n/a	n/a
November 9	18.8	11.3	n/a
November 10	14.9	3.9	n/a
November 11	4.0	0.7	0.00
November 12	7.8	0.8	0.00
November 13	13.8	6.7	0.00
November 14	14.4	5.2	0.00
November 15	5.5	-0.3	n/a
November 16	2.4	-0.9	n/a
November 17	4.0	-1.1	0.00
November 18	8.2	2.4	0.00
November 19	16.6	6.9	0.00
November 20	15.0	5.0	0.52
November 21	10.9	5.5	n/a
November 22	17.2	5.4	0.00
November 23	14.7	4.5	0.00
November 24	17.1	5.6	0.17
November 25	7.1	4.1	0.00
November 26	n/a	n/a	n/a
November 27	9.6	4.3	n/a
November 28	6.2	3.3	0.00
November 29	3.7	-0.9	0.00
November 30	-0.4	-2.9	0.00

December 1999 St. Catharines Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	2.5	-2.9	0.00
December 2	8.5	1.0	0.00
December 3	11.8	8.1	0.00
December 4	11.1	7.3	0.06
December 5	15.8	9.6	0.13
December 6	11.9	2.7	0.00
December 7	2.9	1.1	0.00
December 8	8.3	1.2	0.00
December 9	10.8	2.8	0.00
December 10	11.1	2.4	0.69
December 11	2.7	0.1	0.00
December 12	3.6	-1.5	0.00
December 13	3.5	1.4	0.07
December 14	3.6	1.0	1.25
December 15	10.0	2.6	0.47
December 16	5.3	1.0	0.00
December 17	1.0	-1.9	0.00
December 18	-0.5	-3.6	0.00
December 19	2.2	-4.4	0.00
December 20	9.2	-1.7	0.20
December 21	-1.6	-4.7	0.00
December 22	-3.4	-7.2	0.00
December 23	-3.5	-7.8	0.00
December 24	-3.6	-8.9	0.00
December 25	0.0	-7.2	0.00
December 26	1.3	-3.7	0.00
December 27	-1.9	-7.9	0.00
December 28	-1.6	-10.4	0.00
December 29	3.1	-5.8	0.00
December 30	3.7	-4.1	0.00
December 31	2.5	-5.0	0.00

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Weather Station Details

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