Thunder Bay Weather in 1977

Historical record of Thunder Bay, Ontario weather for the year 1977 based on NOAA data.

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1977 Thunder Bay Weather Extremes
Highest temperature	33.6 °C	July 23
Lowest temperature	-37.9 °C	January 9
Highest daily low	15.2 °C	July 19
Lowest daily high	-23.2 °C	January 8
Most daily precipitation	13.1 cm	September 8
Most daily snow	42.0 cm	December 8
Total annual precipitation	104.6 cm	-
Total annual snow	201.6 cm	-

What was the hottest temperature in Thunder Bay in 1977?

The highest temperature recorded in Thunder Bay, Ontario in 1977 was 33.6 °C which happened on July 23.

Highest Temperatures: All-Time By Year

Highest Temperatures in Thunder Bay in 1977

Rank	Temperature	Date
1	33.6 °C	Jul 23
2	33.0 °C	May 12
3	32.3 °C	Jul 18
4	31.6 °C	Jun 26
5	30.3 °C	Jul 7
6	30.1 °C	May 16
7	29.5 °C	Jul 14
8	28.3 °C	Jun 25
8	28.3 °C	Jun 24
10	28.0 °C	Jul 20

What was the coldest temperature in Thunder Bay in 1977?

The lowest temperature recorded in Thunder Bay, Ontario in 1977 was -37.9 °C which happened on Jan 9.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Thunder Bay in 1977

Rank	Temperature	Date
1	-37.9 °C	January 9
2	-37.3 °C	December 11
3	-34.2 °C	January 12
4	-33.2 °C	January 13
5	-31.6 °C	January 11
6	-30.6 °C	January 8
7	-30.0 °C	January 10
8	-29.9 °C	December 10
9	-29.7 °C	January 16
10	-29.0 °C	January 14

January 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
January 1	-7.4	-13.6	0.00	0.0
January 2	-6.4	-15.6	0.00	0.2
January 3	-6.2	-15.4	0.10	2.9
January 4	-9.4	-20.3	0.00	0.0
January 5	-13.1	-26.1	0.10	1.4
January 6	-11.8	-20.4	0.10	1.6
January 7	-16.1	-26.2	0.00	0.0
January 8	-23.2	-30.6	0.00	0.0
January 9	-22.3	-37.9	0.00	0.0
January 10	-16.4	-30.0	0.00	0.0
January 11	-20.2	-31.6	0.00	0.0
January 12	-20.8	-34.2	0.00	0.0
January 13	-16.0	-33.2	0.16	1.8
January 14	-15.4	-29.0	0.18	1.9
January 15	-20.4	-27.6	0.00	0.0
January 16	-20.0	-29.7	0.00	0.0
January 17	-9.6	-22.1	0.00	0.0
January 18	-7.4	-18.6	0.00	0.0
January 19	-7.9	-22.4	0.00	0.0
January 20	-5.1	-15.1	0.00	0.0
January 21	-10.1	-20.6	0.00	0.0
January 22	-7.5	-26.3	0.13	1.9
January 23	-2.9	-12.2	0.21	3.3
January 24	-5.0	-12.7	0.00	0.0
January 25	-7.7	-18.8	0.03	0.3
January 26	-6.9	-24.1	0.13	1.3
January 27	-18.1	-27.6	0.00	0.0
January 28	-20.1	-24.9	0.00	0.0
January 29	-14.5	-22.9	0.00	0.0
January 30	-9.7	-20.9	0.00	0.0
January 31	-7.6	-14.3	0.00	0.0

February 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
February 1	-2.5	-14.1	0.00	0.0
February 2	-4.2	-16.7	0.13	1.7
February 3	-6.8	-16.2	0.00	0.0
February 4	-11.6	-21.8	0.00	0.0
February 5	-12.8	-25.7	0.00	0.0
February 6	-9.8	-24.9	0.00	0.0
February 7	-9.0	-27.0	0.18	2.3
February 8	-0.1	-10.1	0.08	1.0
February 9	1.4	-8.6	0.27	3.2
February 10	0.2	-4.4	0.10	1.0
February 11	3.0	-2.9	0.00	0.0
February 12	1.0	-6.2	0.00	0.0
February 13	-3.6	-10.6	0.00	0.0
February 14	-10.1	-18.2	0.00	0.0
February 15	-10.4	-25.1	0.00	0.0
February 16	-8.1	-28.4	0.00	0.0
February 17	-1.9	-10.8	0.00	0.0
February 18	-3.1	-10.2	0.00	0.2
February 19	-6.0	-13.2	0.00	0.0
February 20	-4.4	-18.8	0.00	0.0
February 21	-2.6	-17.9	0.00	0.0
February 22	-4.4	-14.0	0.00	0.0
February 23	-6.8	-13.8	1.02	10.6
February 24	-2.3	-9.4	1.07	11.4
February 25	-7.9	-10.3	0.20	2.5
February 26	-1.6	-11.9	0.00	0.0
February 27	-5.0	-16.2	0.05	0.8
February 28	-7.0	-13.4	0.00	0.0

March 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
March 1	1.2	-14.2	0.00	0.0
March 2	3.3	-10.2	0.00	0.0
March 3	-0.5	-17.6	0.00	0.0
March 4	-1.8	-4.4	0.31	3.8
March 5	2.8	-5.2	0.26	2.6
March 6	5.1	-8.2	0.00	0.0
March 7	6.0	-13.5	0.00	0.0
March 8	3.1	-11.3	0.00	0.0
March 9	12.4	-4.0	0.00	0.0
March 10	8.4	-2.3	0.00	0.0
March 11	6.4	1.3	0.00	0.0
March 12	5.7	1.1	1.74	0.0
March 13	5.2	1.8	1.26	0.0
March 14	7.0	1.6	0.00	0.0
March 15	7.3	0.9	0.06	0.0
March 16	1.2	-9.4	0.00	0.0
March 17	1.5	-11.8	0.00	0.0
March 18	5.4	-6.5	0.00	0.0
March 19	7.6	-7.7	0.00	0.0
March 20	0.6	-7.5	0.00	0.0
March 21	-0.4	-11.8	0.00	0.0
March 22	4.6	-11.7	0.13	1.6
March 23	-3.2	-14.5	0.00	0.0
March 24	-3.6	-12.6	0.00	0.0
March 25	-1.8	-6.2	0.00	0.0
March 26	9.2	-2.4	0.10	0.0
March 27	12.1	-0.2	0.10	0.0
March 28	11.6	-2.4	0.23	0.0
March 29	5.7	0.0	0.92	1.8
March 30	0.3	-4.2	0.10	1.6
March 31	5.5	-7.3	0.00	0.0

April 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
April 1	3.2	-5.7	0.25	2.5
April 2	4.8	-3.3	0.05	0.5
April 3	6.0	-10.1	0.00	0.0
April 4	3.5	-6.3	0.00	0.0
April 5	-0.2	-9.6	0.00	0.0
April 6	2.7	-11.7	0.00	0.0
April 7	0.3	-10.5	0.00	0.0
April 8	7.7	-14.4	0.00	0.0
April 9	8.8	-8.7	0.00	0.0
April 10	12.1	0.1	0.00	0.0
April 11	16.9	-2.2	0.00	0.0
April 12	7.2	-1.6	0.26	0.0
April 13	16.4	-2.1	0.00	0.0
April 14	12.6	-4.1	0.00	0.0
April 15	10.1	1.3	0.06	0.0
April 16	16.4	-0.4	0.00	0.0
April 17	9.7	0.8	0.00	0.0
April 18	12.4	4.6	0.16	0.0
April 19	8.9	5.6	0.17	0.0
April 20	13.2	5.1	0.26	0.0
April 21	19.1	3.4	1.36	0.0
April 22	15.0	0.8	0.00	0.0
April 23	16.0	0.8	0.04	0.0
April 24	13.9	1.6	0.00	0.0
April 25	17.8	-2.5	0.00	0.0
April 26	20.1	-2.4	0.00	0.0
April 27	13.2	-3.0	0.36	2.6
April 28	9.3	-6.4	0.00	0.0
April 29	19.7	-6.2	0.00	0.0
April 30	24.1	-1.0	0.00	0.0

May 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	20.0	0.8	0.00
May 2	17.0	-1.0	0.00
May 3	14.7	-2.1	0.00
May 4	12.7	-2.6	0.00
May 5	13.6	4.8	0.86
May 6	8.6	-2.5	0.02
May 7	17.8	-5.3	0.00
May 8	10.9	-2.6	0.00
May 9	13.0	-5.1	0.00
May 10	9.7	-2.4	0.00
May 11	23.6	-0.6	0.00
May 12	33.0	6.1	0.10
May 13	19.5	8.5	0.00
May 14	17.9	6.7	0.00
May 15	19.3	5.3	0.00
May 16	30.1	6.7	0.00
May 17	22.6	6.1	0.04
May 18	27.3	10.4	0.00
May 19	17.7	10.5	0.92
May 20	18.4	11.5	0.18
May 21	24.2	7.0	0.03
May 22	17.0	7.4	2.86
May 23	23.3	10.4	0.69
May 24	25.7	8.8	0.00
May 25	17.7	8.7	0.00
May 26	20.6	6.8	0.00
May 27	27.5	8.8	0.00
May 28	24.8	9.9	0.00
May 29	14.6	7.7	0.00
May 30	17.6	8.0	0.00
May 31	18.1	6.4	0.32

June 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	15.0	4.3	1.98
June 2	17.8	1.5	0.00
June 3	23.9	2.3	0.00
June 4	24.8	10.7	0.00
June 5	15.6	10.2	1.20
June 6	17.9	5.7	0.00
June 7	13.1	3.2	0.62
June 8	17.1	2.2	0.00
June 9	18.4	-0.7	0.00
June 10	18.7	3.2	0.00
June 11	21.3	9.9	0.00
June 12	15.1	4.1	0.00
June 13	16.2	1.4	0.00
June 14	16.5	8.0	0.82
June 15	11.8	8.5	0.89
June 16	14.3	8.3	0.62
June 17	24.0	9.4	0.34
June 18	17.6	10.6	1.52
June 19	21.0	11.2	0.84
June 20	22.7	8.4	0.00
June 21	25.6	5.1	0.00
June 22	25.4	5.8	0.00
June 23	14.3	10.8	0.16
June 24	28.3	12.9	0.02
June 25	28.3	9.4	0.00
June 26	31.6	9.2	0.44
June 27	23.4	12.6	0.00
June 28	22.5	11.6	0.23
June 29	24.7	11.6	0.02
June 30	15.9	10.4	0.52

July 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	21.1	8.5	0.06
July 2	27.4	5.9	0.00
July 3	20.7	10.7	0.74
July 4	24.8	10.0	0.00
July 5	20.8	10.8	3.06
July 6	21.6	15.2	0.00
July 7	30.3	15.0	0.06
July 8	22.7	9.4	0.00
July 9	19.0	6.3	0.00
July 10	19.1	3.8	0.00
July 11	16.3	10.2	1.30
July 12	25.2	11.5	0.30
July 13	23.6	13.0	0.00
July 14	29.5	11.5	0.00
July 15	25.8	12.4	0.00
July 16	18.2	9.2	0.91
July 17	21.2	13.3	0.05
July 18	32.3	12.8	0.00
July 19	26.2	15.2	0.00
July 20	28.0	12.8	0.22
July 21	25.4	10.0	0.00
July 22	27.0	7.2	0.00
July 23	33.6	13.0	0.00
July 24	24.2	12.3	1.26
July 25	22.9	8.7	0.00
July 26	26.5	5.1	0.00
July 27	26.0	10.0	0.02
July 28	17.8	13.8	0.50
July 29	18.0	6.4	0.20
July 30	17.8	4.7	0.84
July 31	21.8	9.3	0.04

August 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	19.3	5.9	0.00
August 2	23.0	5.1	0.04
August 3	18.8	9.3	0.40
August 4	20.2	6.4	0.00
August 5	22.3	9.4	0.22
August 6	24.7	5.1	0.00
August 7	23.5	13.2	0.64
August 8	23.5	10.2	0.00
August 9	24.7	7.1	0.00
August 10	22.7	7.2	0.26
August 11	19.1	8.1	0.05
August 12	21.6	10.3	0.00
August 13	19.0	5.2	0.00
August 14	18.4	5.1	0.00
August 15	18.9	7.1	0.24
August 16	18.8	10.1	1.35
August 17	17.0	4.2	0.24
August 18	18.7	4.4	0.32
August 19	18.3	4.4	0.03
August 20	14.0	2.3	1.15
August 21	18.4	5.7	0.00
August 22	19.3	5.2	0.40
August 23	17.7	2.2	0.00
August 24	19.8	0.1	0.00
August 25	19.6	0.4	1.02
August 26	20.5	12.0	4.84
August 27	21.1	14.7	4.07
August 28	20.6	8.2	0.18
August 29	20.1	7.0	0.00
August 30	19.3	11.8	1.20
August 31	18.0	12.6	0.21

September 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	18.9	9.5	0.12
September 2	21.5	7.4	0.00
September 3	20.3	3.0	0.00
September 4	17.5	10.3	0.34
September 5	15.5	6.3	0.00
September 6	16.3	8.5	0.03
September 7	17.4	2.3	0.00
September 8	14.6	7.4	13.12
September 9	16.6	10.0	2.16
September 10	18.3	4.6	0.00
September 11	14.2	4.3	0.40
September 12	18.9	2.2	0.00
September 13	14.4	5.5	0.04
September 14	19.8	3.6	0.00
September 15	22.0	3.3	0.00
September 16	15.0	3.0	0.00
September 17	18.3	11.0	0.00
September 18	17.8	10.5	1.51
September 19	11.1	3.7	5.15
September 20	16.5	2.8	0.00
September 21	15.7	2.1	0.00
September 22	12.1	1.9	0.60
September 23	12.7	10.7	0.24
September 24	12.6	7.8	3.88
September 25	14.9	9.0	0.47
September 26	15.1	9.0	0.24
September 27	15.5	9.0	0.02
September 28	16.7	8.3	0.00
September 29	16.1	5.0	0.10
September 30	13.3	2.8	0.00

October 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	13.6	-1.7	0.00
October 2	16.6	-0.2	0.00
October 3	19.2	-0.3	0.00
October 4	14.7	-1.8	0.24
October 5	10.6	2.4	0.28
October 6	6.4	-3.6	0.00
October 7	7.1	-3.8	0.05
October 8	6.8	3.6	1.84
October 9	12.8	1.4	0.00
October 10	11.4	0.4	1.54
October 11	7.1	1.9	1.34
October 12	7.2	-3.1	0.00
October 13	13.7	-4.4	0.00
October 14	15.5	4.0	0.00
October 15	8.0	0.1	0.00
October 16	9.8	-3.1	0.00
October 17	13.8	0.5	0.00
October 18	10.5	4.3	0.00
October 19	15.3	-3.6	0.00
October 20	17.5	-2.6	0.00
October 21	14.3	0.5	0.00
October 22	8.1	-3.2	0.00
October 23	9.2	-6.5	0.00
October 24	11.4	-4.7	0.00
October 25	13.8	6.1	0.00
October 26	16.8	3.7	0.00
October 27	17.9	0.3	0.00
October 28	17.7	-2.8	0.00
October 29	14.9	-3.1	0.00
October 30	11.0	6.1	0.00
October 31	9.8	7.1	0.36

November 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
November 1	12.9	1.1	0.00	0.0
November 2	12.2	-2.5	0.00	0.0
November 3	12.5	2.3	0.00	0.0
November 4	9.6	-4.0	0.00	0.0
November 5	8.3	-5.7	0.00	0.0
November 6	9.3	-2.7	0.00	0.0
November 7	8.3	6.2	0.04	0.0
November 8	10.0	7.2	0.06	0.0
November 9	13.1	7.0	0.38	0.0
November 10	9.6	-4.0	0.84	3.0
November 11	-3.5	-9.4	0.00	0.2
November 12	-5.4	-12.9	0.00	0.0
November 13	2.6	-7.7	0.00	0.0
November 14	2.8	-2.1	0.00	0.0
November 15	5.9	-5.0	0.32	0.0
November 16	4.3	0.8	0.08	0.0
November 17	2.8	-1.4	0.06	0.6
November 18	2.0	-6.7	0.00	0.0
November 19	2.2	-5.4	0.02	0.2
November 20	8.1	-0.4	3.60	13.0
November 21	-0.1	-10.0	0.02	0.2
November 22	-2.1	-15.8	0.00	0.0
November 23	-2.5	-8.7	0.00	0.0
November 24	-8.2	-18.7	0.00	0.0
November 25	-9.8	-19.7	0.00	0.0
November 26	-9.0	-19.3	0.00	0.0
November 27	-3.8	-14.3	0.08	3.0
November 28	-2.7	-14.5	0.00	0.0
November 29	1.0	-10.3	0.00	0.0
November 30	3.7	0.2	0.00	0.0

December 1977 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)	Snow (cm)
December 1	2.9	-3.6	0.44	3.0
December 2	-2.9	-13.2	0.00	0.0
December 3	-11.2	-16.7	0.00	0.0
December 4	-8.6	-18.9	0.00	0.0
December 5	-7.2	-10.4	0.56	7.6
December 6	-8.4	-18.6	0.00	0.0
December 7	-7.8	-22.1	0.00	0.0
December 8	-3.5	-13.4	2.72	42.0
December 9	-12.0	-25.5	0.00	0.0
December 10	-19.9	-29.9	0.00	0.0
December 11	-6.8	-37.3	0.88	16.5
December 12	-4.9	-9.8	0.00	0.0
December 13	0.1	-6.3	0.64	6.6
December 14	-3.4	-10.2	0.00	0.0
December 15	1.5	-7.5	0.00	0.0
December 16	3.4	0.2	0.00	0.0
December 17	3.7	0.0	2.68	17.8
December 18	2.1	-1.6	1.08	11.6
December 19	1.2	-2.2	0.68	6.4
December 20	2.1	0.4	0.15	0.0
December 21	1.3	-13.5	0.12	1.2
December 22	-7.4	-15.6	0.00	0.0
December 23	-6.0	-14.9	0.00	0.0
December 24	-11.2	-19.9	0.00	0.0
December 25	-18.8	-26.0	0.00	0.0
December 26	-19.2	-24.1	0.00	0.0
December 27	-15.5	-26.8	0.00	0.4
December 28	-14.2	-26.0	0.00	0.0
December 29	-14.8	-28.3	0.00	0.0
December 30	-14.6	-21.6	0.00	0.0
December 31	-16.0	-23.8	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
2004–2024	Thunder Bay CS	location
1941–2003	Thunder Bay A	location