London Weather in 2021

Historical record of London, Ontario weather for the year 2021 based on NOAA data.

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2021 London Weather Extremes
Highest temperature	31.1 °C	July 5
Lowest temperature	-21.4 °C	February 21
Highest daily low	21.3 °C	August 10
Lowest daily high	-9.1 °C	February 7
Most daily precipitation	6.7 cm	September 22
Total annual precipitation	100.8 cm	-

What was the hottest temperature in London in 2021?

The highest temperature recorded in London, Ontario in 2021 was 31.1 °C which happened on July 5.

Highest Temperatures: All-Time By Year

Highest Temperatures in London in 2021

Rank	Temperature	Date
1	31.1 °C	Jul 5
2	31.0 °C	Aug 29
3	30.5 °C	Aug 26
3	30.5 °C	Aug 22
5	30.4 °C	Jun 6
6	30.3 °C	Aug 24
7	30.1 °C	May 25
8	30.0 °C	Jul 26
8	30.0 °C	Jun 9
10	29.9 °C	Jul 25
10	29.9 °C	Jun 11

What was the coldest temperature in London in 2021?

The lowest temperature recorded in London, Ontario in 2021 was -21.4 °C which happened on Feb 21.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in London in 2021

Rank	Temperature	Date
1	-21.4 °C	February 21
2	-21.3 °C	February 17
3	-17.5 °C	February 14
4	-16.1 °C	February 10
5	-15.8 °C	February 8
6	-15.3 °C	February 7
7	-13.9 °C	February 11
8	-13.8 °C	February 9
9	-13.0 °C	February 20
9	-13.0 °C	February 12

January 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	0.2	-6.0	0.40
January 2	2.1	-2.2	0.82
January 3	0.9	-2.1	0.43
January 4	1.3	-0.3	0.05
January 5	0.9	-0.6	0.03
January 6	n/a	n/a	n/a
January 7	-0.3	-7.3	0.00
January 8	-3.6	-9.9	0.00
January 9	3.1	-7.3	0.00
January 10	1.5	-8.2	0.00
January 11	-1.2	-7.0	0.00
January 12	-1.3	-4.1	0.00
January 13	3.1	-1.4	0.00
January 14	3.9	-1.8	0.00
January 15	4.3	-0.1	0.10
January 16	1.9	-1.4	0.00
January 17	1.6	-1.1	0.09
January 18	0.2	-1.9	0.08
January 19	-1.2	-4.5	0.23
January 20	-1.9	-7.0	0.06
January 21	2.1	-2.3	0.06
January 22	0.6	-8.1	0.34
January 23	-5.6	-8.8	0.07
January 24	-3.4	-11.5	0.02
January 25	-1.3	-5.6	0.00
January 26	-0.8	-5.2	0.51
January 27	-2.6	-10.9	0.00
January 28	-6.3	-11.9	0.18
January 29	-5.1	-10.6	0.25
January 30	-2.7	-6.7	0.00
January 31	-2.1	-6.0	0.00

February 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	-2.6	-7.8	0.00
February 2	-1.8	-9.0	0.02
February 3	-0.5	-9.5	0.00
February 4	0.7	-9.4	0.46
February 5	1.2	-9.5	0.21
February 6	-7.3	-11.2	0.00
February 7	-9.1	-15.3	0.07
February 8	-8.4	-15.8	0.09
February 9	-6.0	-13.8	0.05
February 10	-7.0	-16.1	0.00
February 11	-4.7	-13.9	0.00
February 12	-6.9	-13.0	0.00
February 13	-6.8	-12.8	0.12
February 14	-6.3	-17.5	0.02
February 15	-5.6	-11.6	0.68
February 16	-7.8	-10.6	0.40
February 17	-5.6	-21.3	0.02
February 18	-3.5	-11.8	0.05
February 19	-2.6	-7.7	0.08
February 20	-2.2	-13.0	0.04
February 21	-2.7	-21.4	0.02
February 22	1.7	-2.7	0.57
February 23	4.9	-0.7	0.43
February 24	7.8	-1.2	0.00
February 25	0.8	-4.6	0.00
February 26	2.3	-10.4	0.00
February 27	5.8	-2.8	0.50
February 28	7.1	-2.7	0.12

March 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	3.8	-7.9	0.05
March 2	-0.5	-8.9	0.00
March 3	5.4	-0.9	0.00
March 4	0.4	-7.9	0.00
March 5	0.3	-8.1	0.00
March 6	-1.8	-9.7	0.00
March 7	-1.1	-10.2	0.00
March 8	9.6	-8.5	0.00
March 9	10.3	-2.1	0.00
March 10	16.3	0.7	0.00
March 11	18.8	4.3	0.00
March 12	11.4	-3.7	0.00
March 13	6.3	-6.5	0.00
March 14	4.3	-5.7	0.00
March 15	1.3	-7.7	0.00
March 16	6.2	-3.8	0.12
March 17	12.5	0.2	0.00
March 18	7.0	-2.0	0.00
March 19	6.2	-4.6	0.00
March 20	12.5	-6.4	0.00
March 21	16.1	-3.3	0.00
March 22	18.1	0.9	0.00
March 23	18.2	2.3	0.00
March 24	19.5	8.7	0.00
March 25	19.3	7.0	0.06
March 26	12.5	3.1	3.26
March 27	12.3	4.4	0.02
March 28	10.2	-0.2	0.79
March 29	6.3	-0.8	0.00
March 30	18.2	1.1	0.00
March 31	15.8	-0.6	0.02

April 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	0.1	-3.8	0.00
April 2	4.4	-4.9	0.00
April 3	9.6	-5.3	0.00
April 4	16.0	-0.9	0.00
April 5	11.2	3.4	0.28
April 6	20.3	4.1	0.02
April 7	21.9	5.3	0.00
April 8	26.0	9.2	0.00
April 9	20.7	11.4	0.39
April 10	23.9	11.5	0.00
April 11	18.7	10.1	1.53
April 12	15.5	8.8	3.00
April 13	16.5	6.5	0.02
April 14	13.5	3.3	0.00
April 15	6.3	1.9	0.22
April 16	4.8	2.6	0.00
April 17	11.7	3.9	0.00
April 18	15.1	3.2	0.00
April 19	16.1	2.3	0.36
April 20	4.7	-1.1	0.44
April 21	2.5	-4.2	0.09
April 22	5.7	-4.1	0.02
April 23	17.7	-0.9	0.00
April 24	16.3	1.7	0.00
April 25	9.7	-2.9	0.00
April 26	8.1	-2.4	0.00
April 27	22.4	4.8	0.00
April 28	24.6	8.0	0.00
April 29	11.7	6.6	0.92
April 30	8.9	1.4	0.00

May 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	13.3	-1.8	0.00
May 2	25.2	10.8	0.00
May 3	14.9	7.6	0.42
May 4	15.9	7.1	0.28
May 5	9.4	1.4	0.00
May 6	12.8	-0.4	0.25
May 7	11.3	3.0	0.03
May 8	11.0	1.5	0.05
May 9	10.7	0.0	0.00
May 10	12.5	0.3	0.00
May 11	10.3	1.4	0.00
May 12	16.9	2.3	0.00
May 13	18.6	1.6	0.00
May 14	21.0	1.7	0.00
May 15	21.2	3.9	0.00
May 16	20.6	6.4	0.00
May 17	23.5	6.1	0.00
May 18	25.4	7.3	0.00
May 19	26.6	8.9	0.02
May 20	29.4	16.3	0.00
May 21	29.8	16.1	0.00
May 22	26.1	18.3	0.12
May 23	27.6	16.0	0.00
May 24	25.1	14.3	0.00
May 25	30.1	14.4	0.00
May 26	23.0	8.7	1.12
May 27	17.1	5.3	0.00
May 28	10.1	3.6	1.95
May 29	16.4	4.0	0.00
May 30	20.1	3.8	0.00
May 31	21.8	5.7	0.00

June 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	23.9	11.3	0.02
June 2	23.0	8.9	1.29
June 3	22.6	14.9	0.09
June 4	27.3	14.0	0.00
June 5	29.3	21.3	0.00
June 6	30.4	19.4	0.00
June 7	28.2	19.1	0.00
June 8	27.6	20.1	0.00
June 9	30.0	18.9	0.78
June 10	28.2	17.9	0.00
June 11	29.9	16.2	0.00
June 12	26.2	15.8	0.00
June 13	25.8	14.2	0.04
June 14	22.9	13.9	0.16
June 15	22.5	10.7	0.00
June 16	20.8	7.6	0.00
June 17	24.2	5.3	0.00
June 18	25.2	15.5	0.62
June 19	26.0	13.7	0.00
June 20	28.2	11.7	0.54
June 21	26.4	11.4	0.86
June 22	18.2	9.1	0.00
June 23	23.1	7.5	0.00
June 24	25.2	15.2	0.00
June 25	23.3	19.4	3.33
June 26	26.8	20.1	1.89
June 27	28.8	21.2	0.00
June 28	n/a	n/a	n/a
June 29	n/a	n/a	n/a
June 30	26.8	18.4	0.00

July 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	24.6	14.3	0.87
July 2	23.9	13.7	0.00
July 3	25.2	11.1	0.00
July 4	27.5	13.5	0.00
July 5	31.1	17.4	0.00
July 6	n/a	n/a	n/a
July 7	29.1	16.5	0.57
July 8	23.8	15.8	1.97
July 9	18.6	15.1	0.00
July 10	21.6	13.8	0.00
July 11	19.5	14.9	0.72
July 12	23.3	16.9	0.00
July 13	26.3	18.3	0.45
July 14	28.2	19.7	0.00
July 15	28.3	19.3	0.41
July 16	21.4	16.7	0.08
July 17	24.0	15.5	0.58
July 18	28.7	14.5	0.00
July 19	28.2	15.1	0.00
July 20	28.7	16.6	0.00
July 21	24.5	13.4	0.00
July 22	25.0	11.1	0.00
July 23	25.9	15.8	0.00
July 24	23.8	15.4	1.98
July 25	29.9	16.5	0.02
July 26	30.0	15.8	0.00
July 27	26.4	16.0	0.00
July 28	26.7	16.0	0.00
July 29	27.4	16.9	1.78
July 30	21.6	10.7	0.00
July 31	21.8	8.6	0.00

August 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	22.9	13.6	0.23
August 2	24.1	11.8	0.00
August 3	24.4	10.8	0.07
August 4	26.9	11.9	0.00
August 5	27.0	12.6	0.00
August 6	27.5	14.5	0.72
August 7	26.4	18.4	0.06
August 8	26.4	17.2	0.00
August 9	29.7	19.9	0.13
August 10	27.7	21.3	1.43
August 11	28.8	21.1	0.70
August 12	28.9	19.9	0.77
August 13	27.8	16.3	0.10
August 14	23.5	11.0	0.00
August 15	23.3	9.3	0.00
August 16	25.4	12.8	0.00
August 17	26.6	17.6	0.00
August 18	27.1	17.5	0.65
August 19	28.2	16.9	0.00
August 20	28.2	14.0	0.00
August 21	29.8	17.2	0.00
August 22	30.5	17.5	0.64
August 23	29.6	18.8	0.00
August 24	30.3	16.7	0.00
August 25	28.1	20.6	0.00
August 26	30.5	19.4	5.72
August 27	27.1	18.5	0.02
August 28	29.6	18.0	0.00
August 29	31.0	19.1	0.86
August 30	27.7	16.7	0.00
August 31	24.7	14.8	0.00

September 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	23.9	12.5	0.00
September 2	22.6	10.1	0.00
September 3	22.9	8.7	0.02
September 4	23.4	12.8	0.78
September 5	24.9	16.0	0.00
September 6	22.1	10.8	0.03
September 7	25.6	10.3	1.45
September 8	24.2	14.6	0.34
September 9	20.5	10.4	0.50
September 10	22.4	9.9	0.05
September 11	24.1	12.3	0.00
September 12	23.2	15.7	1.28
September 13	21.6	12.4	0.41
September 14	27.2	15.7	0.69
September 15	22.4	13.4	0.00
September 16	24.3	12.4	0.00
September 17	26.2	13.5	0.00
September 18	24.5	10.7	0.00
September 19	23.7	8.9	0.00
September 20	25.5	12.1	0.00
September 21	21.6	18.3	3.51
September 22	18.3	11.5	6.70
September 23	14.3	10.4	0.35
September 24	19.0	10.1	0.00
September 25	17.8	8.3	0.13
September 26	19.8	8.1	0.00
September 27	24.3	15.5	0.00
September 28	19.2	10.5	0.00
September 29	20.3	7.4	0.00
September 30	18.9	5.7	0.00

October 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	n/a	n/a	n/a
October 2	25.2	10.6	0.02
October 3	20.4	18.1	3.10
October 4	18.8	14.7	0.91
October 5	19.0	13.1	0.00
October 6	19.8	13.8	0.00
October 7	24.9	15.3	0.00
October 8	22.8	16.3	1.90
October 9	22.4	16.6	0.03
October 10	19.2	16.4	0.38
October 11	24.0	16.3	0.00
October 12	22.5	15.5	0.00
October 13	21.3	12.7	0.00
October 14	23.9	13.5	0.74
October 15	17.4	13.5	2.24
October 16	15.4	9.0	0.28
October 17	13.9	6.3	0.08
October 18	13.9	3.6	0.09
October 19	21.2	2.4	0.00
October 20	19.4	10.0	0.00
October 21	17.3	7.7	2.63
October 22	8.5	3.6	0.00
October 23	8.3	0.4	0.14
October 24	11.5	-1.0	0.59
October 25	9.1	4.7	1.57
October 26	7.8	4.7	0.00
October 27	17.0	4.6	0.00
October 28	12.7	4.9	0.00
October 29	12.3	7.8	1.37
October 30	10.8	7.7	0.23
October 31	13.6	6.0	0.16

November 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	8.9	2.7	0.02
November 2	7.8	1.0	0.00
November 3	5.7	-0.4	0.53
November 4	5.1	-1.9	0.02
November 5	8.7	-1.2	0.00
November 6	11.0	-2.5	0.00
November 7	15.5	0.4	0.00
November 8	17.7	0.9	0.00
November 9	13.4	4.7	0.00
November 10	12.9	-0.8	0.02
November 11	17.2	4.4	1.14
November 12	11.4	3.9	0.06
November 13	6.5	0.8	0.00
November 14	3.2	0.0	0.95
November 15	4.0	0.1	0.41
November 16	6.0	-1.3	0.00
November 17	15.7	1.6	0.27
November 18	9.2	0.0	0.14
November 19	5.2	-2.8	0.00
November 20	5.2	-0.8	0.00
November 21	7.5	-2.1	0.38
November 22	1.7	-1.8	0.00
November 23	3.2	-4.9	0.00
November 24	8.8	-3.5	0.03
November 25	6.2	0.4	1.31
November 26	0.5	-2.9	0.32
November 27	-1.0	-4.7	0.38
November 28	0.1	-5.3	0.41
November 29	1.5	-5.4	0.12
November 30	2.9	-1.5	0.44

December 2021 London Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	5.0	-1.7	0.03
December 2	10.2	0.6	0.05
December 3	2.2	-1.4	0.02
December 4	4.5	-1.4	0.00
December 5	6.4	-1.5	1.77
December 6	10.1	-2.4	0.04
December 7	-2.4	-7.9	0.02
December 8	-2.2	-6.8	0.17
December 9	1.2	-7.1	0.02
December 10	6.3	0.6	0.34
December 11	16.3	0.4	1.79
December 12	6.6	-1.3	0.00
December 13	8.6	-0.5	0.00
December 14	7.2	-3.9	0.00
December 15	12.4	2.5	0.04
December 16	15.0	2.6	0.00
December 17	3.7	-2.1	0.00
December 18	-0.1	-2.6	0.47
December 19	-2.2	-4.2	0.00
December 20	3.2	-3.4	0.00
December 21	3.4	-4.1	0.00
December 22	3.0	-5.6	0.00
December 23	-1.1	-7.2	0.42
December 24	3.3	-3.1	0.11
December 25	7.5	1.3	0.70
December 26	2.4	-3.6	0.00
December 27	2.1	-3.6	0.18
December 28	1.4	-1.3	0.21
December 29	2.2	-1.5	0.02
December 30	1.7	-1.6	0.00
December 31	6.5	0.7	0.05

Next Year >

Weather Station Details

Years	Station	Coordinates
2002–2024	London CS	location
1941–2002	London International Airport	location
1932–1940	London Lambeth A	location
1883–1931	London South	location