Thunder Bay Weather in 2018

Historical record of Thunder Bay, Ontario weather for the year 2018 based on NOAA data.

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2018 Thunder Bay Weather Extremes
Highest temperature	32.3 °C	July 14
Lowest temperature	-32.3 °C	February 4
Highest daily low	17.4 °C	July 8
Lowest daily high	-19.6 °C	January 5
Most daily precipitation	3.7 cm	October 10
Total annual precipitation	63.3 cm	-

What was the hottest temperature in Thunder Bay in 2018?

The highest temperature recorded in Thunder Bay, Ontario in 2018 was 32.3 °C which happened on July 14.

Highest Temperatures: All-Time By Year

Highest Temperatures in Thunder Bay in 2018

Rank	Temperature	Date
1	32.3 °C	Jul 14
2	31.5 °C	Jun 28
3	30.9 °C	Jul 13
4	30.8 °C	Aug 12
5	30.6 °C	Jul 31
6	30.2 °C	Aug 5
7	30.0 °C	Aug 10
8	29.8 °C	Jul 30
9	29.7 °C	Jul 12
10	29.6 °C	Aug 13

What was the coldest temperature in Thunder Bay in 2018?

The lowest temperature recorded in Thunder Bay, Ontario in 2018 was -32.3 °C which happened on Feb 4.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Thunder Bay in 2018

Rank	Temperature	Date
1	-32.3 °C	February 4
2	-32.0 °C	February 6
3	-31.7 °C	January 14
4	-31.3 °C	February 3
4	-31.3 °C	January 5
6	-30.5 °C	February 7
7	-29.8 °C	January 4
8	-29.7 °C	January 6
9	-29.3 °C	January 30
10	-28.8 °C	February 8

January 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
January 1	-14.5	-25.6	0.00
January 2	-13.3	-19.0	0.07
January 3	-18.6	-26.9	0.00
January 4	-19.5	-29.8	0.00
January 5	-19.6	-31.3	0.00
January 6	-8.2	-29.7	0.10
January 7	-4.7	-9.6	0.46
January 8	-2.4	-17.2	0.05
January 9	-1.2	-22.8	0.00
January 10	4.2	-1.7	0.33
January 11	0.2	-21.0	0.33
January 12	-19.5	-26.9	0.00
January 13	-16.5	-26.8	0.00
January 14	-9.6	-31.7	0.40
January 15	-6.7	-16.2	0.34
January 16	-10.3	-18.9	0.00
January 17	-1.3	-16.0	0.00
January 18	-2.9	-18.1	0.00
January 19	5.0	-7.0	0.02
January 20	3.6	-7.6	0.00
January 21	-4.2	-9.7	0.00
January 22	-6.9	-12.3	0.00
January 23	-9.9	-19.5	0.00
January 24	-9.0	-18.7	0.02
January 25	-4.6	-11.2	0.00
January 26	4.8	-10.1	0.00
January 27	2.2	-12.2	0.08
January 28	-12.0	-23.5	0.00
January 29	-13.6	-24.5	0.00
January 30	-3.7	-29.3	0.36
January 31	-2.8	-19.7	0.09

February 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
February 1	-15.5	-21.7	0.00
February 2	-17.3	-26.2	0.00
February 3	-17.3	-31.3	0.00
February 4	-16.3	-32.3	0.00
February 5	-13.5	-27.5	0.00
February 6	-13.9	-32.0	0.00
February 7	-11.1	-30.5	0.00
February 8	-13.3	-28.8	0.00
February 9	-11.6	-28.7	0.00
February 10	-10.3	-24.0	0.00
February 11	-8.7	-27.7	0.00
February 12	-13.2	-26.0	0.00
February 13	-1.9	-26.9	0.00
February 14	1.3	-13.2	0.00
February 15	-1.6	-13.4	0.00
February 16	-6.3	-20.4	0.00
February 17	-1.6	-11.1	0.00
February 18	-9.8	-19.8	0.66
February 19	-11.1	-18.6	0.14
February 20	-13.4	-18.1	0.13
February 21	-4.3	-21.1	0.00
February 22	-3.4	-25.2	0.00
February 23	-0.6	-9.0	0.88
February 24	-3.0	-20.1	0.02
February 25	-1.1	-4.3	1.14
February 26	2.1	-7.2	0.00
February 27	7.8	-8.2	0.00
February 28	2.3	-10.9	0.00

March 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
March 1	-1.5	-11.6	0.00
March 2	0.6	-17.0	0.00
March 3	1.3	-8.1	0.00
March 4	0.3	-5.4	0.06
March 5	-2.8	-8.8	0.00
March 6	-4.8	-15.1	0.00
March 7	-2.3	-13.1	0.02
March 8	-0.2	-12.1	0.00
March 9	-1.4	-5.7	0.00
March 10	1.3	-13.0	0.00
March 11	3.0	-16.7	0.00
March 12	1.1	-6.8	0.04
March 13	-0.1	-9.8	0.00
March 14	4.5	-14.2	0.00
March 15	-1.8	-12.6	0.00
March 16	5.6	-17.0	0.00
March 17	8.9	-12.4	0.00
March 18	-1.9	-7.2	0.00
March 19	-3.9	-16.1	0.00
March 20	-5.2	-20.0	0.00
March 21	-1.5	-13.0	0.00
March 22	4.2	-16.0	0.00
March 23	-0.9	-15.0	0.00
March 24	-3.1	-11.7	0.00
March 25	1.5	-16.8	0.00
March 26	1.7	-0.9	0.32
March 27	5.6	-2.7	0.04
March 28	9.5	-4.0	0.00
March 29	1.3	-6.6	0.00
March 30	-3.9	-14.2	0.00
March 31	-3.9	-12.3	0.02

April 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
April 1	-0.8	-13.0	0.02
April 2	-3.2	-10.5	0.00
April 3	-3.5	-13.2	0.00
April 4	-0.8	-12.3	0.00
April 5	1.3	-10.1	0.00
April 6	-3.9	-9.6	0.04
April 7	-1.5	-11.9	0.00
April 8	0.8	-15.6	0.00
April 9	4.9	-12.6	0.00
April 10	3.9	-7.3	0.00
April 11	6.8	-3.2	0.00
April 12	9.7	-4.7	0.05
April 13	4.0	-9.1	0.00
April 14	-0.3	-7.7	0.04
April 15	-1.1	-6.0	0.62
April 16	-2.9	-7.2	0.30
April 17	3.5	-3.6	0.02
April 18	8.6	-4.4	0.00
April 19	14.2	-6.4	0.00
April 20	15.1	-6.6	0.00
April 21	n/a	n/a	n/a
April 22	n/a	n/a	n/a
April 23	n/a	n/a	n/a
April 24	13.2	-3.0	0.00
April 25	10.9	-5.4	0.00
April 26	11.4	-3.8	0.00
April 27	9.2	-5.1	0.00
April 28	9.7	-6.5	0.00
April 29	16.5	-7.0	0.00
April 30	19.6	-1.5	0.11

May 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
May 1	22.5	5.0	0.04
May 2	9.4	-2.7	0.09
May 3	16.3	-5.1	0.14
May 4	22.6	-0.8	0.09
May 5	16.9	1.7	0.00
May 6	15.4	-2.4	0.00
May 7	23.8	-4.1	0.00
May 8	14.5	1.4	0.28
May 9	10.5	5.3	0.19
May 10	10.5	-4.0	0.00
May 11	13.0	-6.4	0.00
May 12	17.5	-3.3	0.00
May 13	26.3	-3.3	0.00
May 14	26.4	6.3	0.00
May 15	10.6	1.3	0.00
May 16	19.2	2.8	0.00
May 17	11.3	-2.0	0.06
May 18	13.8	4.1	0.00
May 19	n/a	4.9	n/a
May 20	n/a	n/a	n/a
May 21	n/a	n/a	n/a
May 22	n/a	n/a	n/a
May 23	n/a	n/a	n/a
May 24	20.2	3.8	0.00
May 25	22.2	9.5	2.11
May 26	17.5	9.0	0.40
May 27	20.7	10.0	0.00
May 28	27.1	9.3	0.00
May 29	19.8	9.4	0.00
May 30	19.9	10.2	1.16
May 31	24.4	7.5	0.78

June 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
June 1	13.6	4.8	0.00
June 2	15.0	7.0	0.18
June 3	15.3	7.0	0.35
June 4	17.6	7.5	0.05
June 5	19.2	2.0	0.00
June 6	20.6	2.6	0.00
June 7	21.1	5.9	0.00
June 8	24.9	5.7	0.00
June 9	18.5	9.4	0.00
June 10	22.0	9.6	0.00
June 11	21.5	5.8	0.00
June 12	22.0	7.9	0.00
June 13	27.6	9.8	0.00
June 14	25.7	6.2	0.00
June 15	16.6	9.4	0.71
June 16	19.6	11.0	1.01
June 17	24.5	12.1	1.58
June 18	26.9	10.6	0.00
June 19	25.8	7.2	0.00
June 20	25.6	9.1	0.00
June 21	20.6	7.1	0.00
June 22	23.4	9.1	0.00
June 23	16.9	8.9	0.31
June 24	19.0	4.3	0.02
June 25	18.1	1.2	0.00
June 26	21.5	7.3	0.00
June 27	25.2	10.9	0.00
June 28	31.5	10.3	0.00
June 29	21.6	12.3	0.53
June 30	23.3	13.9	3.17

July 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
July 1	17.7	13.8	2.33
July 2	28.5	10.8	0.00
July 3	20.6	13.3	0.40
July 4	21.6	11.5	0.02
July 5	24.9	10.3	0.00
July 6	27.7	8.6	0.00
July 7	27.7	9.7	0.00
July 8	24.4	17.4	0.92
July 9	28.1	13.8	0.00
July 10	27.8	12.8	0.00
July 11	21.2	9.9	0.47
July 12	29.7	15.2	0.83
July 13	30.9	15.6	0.00
July 14	32.3	15.5	0.00
July 15	28.9	14.6	0.00
July 16	23.8	9.9	0.01
July 17	22.1	9.9	0.00
July 18	28.1	7.2	0.00
July 19	27.2	11.0	0.00
July 20	20.0	11.7	0.02
July 21	23.9	13.7	0.01
July 22	24.9	11.8	0.00
July 23	27.6	11.0	0.00
July 24	27.2	13.9	0.00
July 25	25.3	10.0	0.00
July 26	21.4	12.5	0.53
July 27	23.6	11.0	0.02
July 28	26.7	8.0	0.15
July 29	28.5	12.1	0.00
July 30	29.8	12.0	1.34
July 31	30.6	10.7	0.03

August 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
August 1	15.5	9.9	0.10
August 2	19.7	4.9	0.00
August 3	20.1	3.8	0.00
August 4	20.0	8.4	0.61
August 5	30.2	13.8	0.01
August 6	20.8	12.3	0.00
August 7	22.7	10.4	0.00
August 8	25.9	8.2	0.29
August 9	26.9	10.5	0.52
August 10	30.0	10.1	0.00
August 11	28.1	12.4	0.07
August 12	30.8	11.7	0.00
August 13	29.6	11.6	0.00
August 14	25.3	15.9	0.00
August 15	20.8	9.7	0.00
August 16	28.0	6.6	0.00
August 17	22.1	12.6	0.00
August 18	22.2	11.0	0.00
August 19	24.7	9.4	0.00
August 20	19.3	13.1	1.34
August 21	23.1	9.5	0.00
August 22	27.3	9.6	0.00
August 23	28.7	7.8	0.00
August 24	20.2	11.3	0.02
August 25	21.1	14.6	0.01
August 26	24.7	13.8	0.00
August 27	27.8	11.0	2.06
August 28	13.7	9.2	0.00
August 29	19.4	6.3	0.00
August 30	21.2	4.8	0.00
August 31	20.6	13.0	1.04

September 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
September 1	27.8	15.9	0.00
September 2	19.3	11.9	0.05
September 3	24.2	9.4	0.00
September 4	17.4	8.7	0.01
September 5	20.8	5.7	0.00
September 6	21.3	1.8	0.00
September 7	18.5	4.3	0.00
September 8	16.3	0.7	0.00
September 9	18.6	2.2	0.00
September 10	23.9	4.4	0.00
September 11	24.6	7.2	0.00
September 12	25.1	15.9	0.01
September 13	25.6	13.8	0.00
September 14	28.2	15.6	0.00
September 15	21.0	15.0	1.86
September 16	23.6	14.9	0.55
September 17	23.8	5.8	0.00
September 18	15.5	5.9	0.06
September 19	14.4	7.5	0.00
September 20	13.4	5.1	2.96
September 21	12.6	2.8	0.38
September 22	16.6	-1.3	0.93
September 23	7.1	1.5	0.53
September 24	19.3	6.8	0.69
September 25	13.4	7.9	0.41
September 26	13.1	5.7	0.13
September 27	12.3	4.2	0.49
September 28	8.8	1.0	0.35
September 29	n/a	n/a	n/a
September 30	12.8	-2.0	0.09

October 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
October 1	8.3	-3.5	0.00
October 2	14.0	-1.3	0.00
October 3	15.1	3.4	0.80
October 4	8.4	-1.7	0.00
October 5	5.9	1.1	0.87
October 6	9.4	3.6	0.42
October 7	6.6	2.3	0.00
October 8	7.0	4.6	1.28
October 9	6.1	3.7	0.50
October 10	3.9	2.0	3.74
October 11	4.1	-1.9	0.14
October 12	n/a	n/a	n/a
October 13	6.1	-5.7	0.06
October 14	4.5	0.1	0.00
October 15	4.4	0.0	0.03
October 16	6.5	-0.8	0.14
October 17	2.7	-7.4	0.06
October 18	20.2	-9.0	0.00
October 19	16.2	1.2	0.09
October 20	2.4	-3.4	0.10
October 21	7.2	-5.1	0.00
October 22	n/a	n/a	n/a
October 23	n/a	n/a	n/a
October 24	8.1	-5.9	0.06
October 25	6.8	-0.4	0.91
October 26	5.6	3.9	1.05
October 27	7.3	5.5	0.05
October 28	6.8	4.6	0.11
October 29	9.6	2.1	0.00
October 30	7.3	-0.4	0.30
October 31	7.9	-0.5	0.01

November 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
November 1	7.2	-1.3	0.00
November 2	4.3	0.0	0.31
November 3	4.6	-1.4	0.00
November 4	6.0	-3.6	2.45
November 5	7.2	1.3	0.64
November 6	5.5	0.4	0.01
November 7	2.7	-6.1	0.02
November 8	-2.7	-7.5	0.00
November 9	-3.8	-8.8	0.07
November 10	-5.4	-11.9	0.00
November 11	-1.6	-9.0	0.13
November 12	-5.6	-13.8	0.02
November 13	-7.1	-16.1	0.01
November 14	2.0	-19.6	0.03
November 15	4.4	-0.8	0.21
November 16	1.1	-10.5	0.07
November 17	-7.8	-18.6	0.02
November 18	-7.1	-19.4	0.00
November 19	-10.4	-20.5	0.00
November 20	-9.7	-20.4	0.05
November 21	-10.7	-20.0	0.00
November 22	0.0	-16.2	0.02
November 23	6.3	-0.1	0.26
November 24	3.3	-0.7	0.50
November 25	-0.7	-10.9	0.02
November 26	-4.8	-11.1	0.01
November 27	-6.7	-15.3	0.02
November 28	-3.3	-12.5	0.00
November 29	-0.3	-5.5	0.43
November 30	0.1	-2.5	0.01

December 2018 Thunder Bay Weather

Day	High (°C)	Low (°C)	Precip. (cm)
December 1	-2.3	-9.4	0.01
December 2	-1.4	-4.1	0.07
December 3	-3.9	-8.9	0.01
December 4	-4.1	-10.2	0.00
December 5	-3.2	-7.3	0.02
December 6	-6.5	-22.8	0.00
December 7	-10.1	-22.6	0.00
December 8	-0.8	-18.1	0.00
December 9	-2.4	-10.3	0.00
December 10	-2.3	-15.2	0.00
December 11	-5.4	-11.8	0.00
December 12	0.8	-5.4	0.00
December 13	2.5	-2.3	0.00
December 14	4.7	-7.6	0.00
December 15	7.1	-10.7	0.00
December 16	5.6	-7.6	0.04
December 17	-4.4	-15.8	0.00
December 18	1.3	-15.6	0.00
December 19	0.5	-12.6	0.00
December 20	0.7	-8.0	0.36
December 21	-7.8	-18.1	0.00
December 22	-5.2	-18.5	0.05
December 23	-3.4	-8.5	0.26
December 24	-5.8	-16.4	0.01
December 25	-3.4	-8.3	0.08
December 26	-4.4	-17.5	0.00
December 27	0.3	-4.4	2.81
December 28	-2.8	-23.9	0.00
December 29	-13.3	-27.6	0.00
December 30	-6.7	-14.5	0.03
December 31	-8.2	-22.0	0.29

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Weather Station Details

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