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Cornwall Weather in 1977

Historical record of Cornwall, Ontario weather for the year 1977 based on NOAA data.
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1977 Cornwall Weather Extremes
Highest temperature 33.0 °C July 20
Lowest temperature -27.2 °C January 18
Highest daily low 23.5 °C August 29
Lowest daily high -18.0 °C December 11
Most daily precipitation 7.3 cm July 17
Most daily snow 33.0 cm January 10
Total annual precipitation 121.9 cm -
Total annual snow 344.8 cm -
What was the hottest temperature in Cornwall in 1977?
The highest temperature recorded in Cornwall, Ontario in 1977 was 33.0 °C which happened on July 20.
Highest Temperatures: All-Time By Year
Highest Temperatures in Cornwall in 1977
Rank Temperature Date
1 33.0 °C Jul 20
2 31.5 °C Jul 19
3 31.0 °C Aug 29
3 31.0 °C Aug 28
3 31.0 °C Jun 28
6 30.5 °C Jul 17
6 30.5 °C Jul 15
8 30.0 °C Jul 16
8 30.0 °C May 27
8 30.0 °C May 25
8 30.0 °C May 24
8 30.0 °C May 23
8 30.0 °C May 22
8 30.0 °C May 21
8 30.0 °C May 17
What was the coldest temperature in Cornwall in 1977?
The lowest temperature recorded in Cornwall, Ontario in 1977 was -27.2 °C which happened on Jan 18.
Lowest Temperatures: All-Time By Year
Lowest Temperatures in Cornwall in 1977
Rank Temperature Date
1 -27.2 °C January 18
2 -23.9 °C January 17
3 -22.8 °C January 13
3 -22.8 °C January 10
5 -22.5 °C December 12
6 -22.0 °C December 11
7 -21.1 °C January 8
8 -20.6 °C January 1
9 -20.0 °C February 16
9 -20.0 °C January 9
January 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
January 1
 -6.7 -20.6 0.33 3.3
January 2
 -5.0 -10.0 0.00 0.0
January 3
 -3.3 -8.9 0.25 2.5
January 4
 -2.2 -5.0 0.51 5.1
January 5
 -2.8 -7.8 0.00 0.0
January 6
 -7.8 -17.8 0.25 2.5
January 7
 -2.8 -16.1 0.25 2.5
January 8
 -13.3 -21.1 0.13 1.3
January 9
 -13.9 -20.0 0.38 3.8
January 10
 -12.2 -22.8 3.30 33.0
January 11
 -15.0 -19.4 0.00 0.0
January 12
 -13.9 -18.3 0.00 0.0
January 13
 -13.3 -22.8 0.25 2.5
January 14
 -13.3 -15.6 0.13 1.3
January 15
 -7.8 -17.2 0.38 3.8
January 16
 -11.1 -15.6 0.00 0.0
January 17
 -17.8 -23.9 0.00 0.0
January 18
 -11.1 -27.2 1.73 17.3
January 19
 -6.1 -18.3 1.07 10.7
January 20
 -3.3 -8.3 0.00 0.0
January 21
 -6.7 -11.1 0.00 0.0
January 22
 -13.9 -19.4 0.08 0.8
January 23
 -10.0 -18.3 0.00 0.0
January 24
 -4.4 -11.7 0.38 3.8
January 25
 -1.7 -10.6 0.64 6.4
January 26
 -3.3 -7.2 0.46 4.6
January 27
 -7.2 -13.3 0.41 4.1
January 28
 -5.6 -15.6 1.40 14.0
January 29
 -13.9 -16.7 0.00 0.0
January 30
 -10.6 -16.1 0.00 0.0
January 31
 -8.3 -13.3 1.27 12.7
February 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
February 1
 -7.8 -13.3 0.00 0.0
February 2
 -5.0 -19.4 0.00 0.0
February 3
 -1.1 -12.2 0.71 7.1
February 4
 -1.1 -9.4 0.05 0.5
February 5
 -6.1 -10.0 0.66 6.6
February 6
 -12.8 -19.4 1.32 13.2
February 7
 -11.1 -15.0 0.00 0.0
February 8
 -5.6 -18.3 0.00 0.0
February 9
 -3.3 -10.0 0.69 6.9
February 10
 -2.8 -12.2 0.00 0.0
February 11
 5.6 -5.6 0.00 0.0
February 12
 2.2 1.1 0.38 3.8
February 13
 3.9 -2.2 0.08 0.8
February 14
 -0.6 -3.3 0.00 0.0
February 15
 -10.6 -11.1 0.00 0.0
February 16
 -14.4 -20.0 0.00 0.0
February 17
 -8.3 -18.9 0.00 0.0
February 18
 -2.2 -13.9 0.18 1.8
February 19
 0.0 -6.7 0.00 0.0
February 20
 -1.1 -7.8 0.00 0.0
February 21
 -7.2 -12.2 0.00 0.0
February 22
 -1.7 -12.2 0.64 6.4
February 23
 -4.4 -15.0 0.00 0.0
February 24
 3.3 -12.8 1.09 0.0
February 25
 2.8 -2.2 0.00 0.0
February 26
 1.7 -0.6 0.00 0.0
February 27
 8.3 -1.7 0.00 0.0
February 28
 -1.7 -4.4 0.00 0.0
March 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
March 1
 -3.3 -7.2 0.00 0.0
March 2
 1.1 -7.8 0.00 0.0
March 3
 2.8 -3.3 0.00 0.0
March 4
 6.1 -3.9 1.24 0.0
March 5
 5.6 0.6 0.23 0.0
March 6
 2.2 0.6 0.00 0.0
March 7
 1.7 0.0 0.00 0.0
March 8
 4.4 -3.9 0.00 0.0
March 9
 13.9 -0.6 0.00 0.0
March 10
 13.3 5.6 0.00 0.0
March 11
 12.8 0.0 0.00 0.0
March 12
 18.9 0.0 0.56 0.0
March 13
 7.8 5.0 2.82 0.0
March 14
 4.4 1.7 0.28 0.0
March 15
 4.4 1.1 0.00 0.0
March 16
 7.2 0.6 0.64 0.0
March 17
 1.1 -3.3 0.00 0.0
March 18
 -2.2 -6.1 0.00 0.0
March 19
 1.1 -6.1 0.00 0.0
March 20
 6.7 -5.6 0.05 0.5
March 21
 6.7 -0.6 0.00 0.0
March 22
 0.0 -2.8 2.62 26.2
March 23
 -0.6 -4.4 0.00 0.0
March 24
 0.0 -5.0 0.00 0.0
March 25
 0.6 -10.0 0.00 0.0
March 26
 2.2 -6.1 0.00 0.0
March 27
 8.3 -5.0 0.00 0.0
March 28
 11.7 1.7 0.89 0.0
March 29
 20.0 4.4 0.00 0.0
March 30
 25.6 8.3 0.33 0.0
March 31
 17.2 3.9 0.00 0.0
April 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
April 1
 10.6 -6.7 0.00 0.0
April 2
 10.6 -1.7 0.76 0.0
April 3
 13.3 0.6 0.00 0.0
April 4
 3.3 -3.9 0.23 0.0
April 5
 8.9 -2.2 0.41 0.0
April 6
 2.2 -2.8 0.00 0.0
April 7
 2.2 -7.2 0.51 5.1
April 8
 -1.1 -10.0 0.64 0.0
April 9
 2.8 -11.1 0.00 0.0
April 10
 9.4 -6.1 0.00 0.0
April 11
 22.8 -1.1 0.00 0.0
April 12
 18.9 10.0 0.00 0.0
April 13
 20.0 6.1 0.69 0.0
April 14
 15.6 2.8 0.00 0.0
April 15
 11.7 -0.6 0.00 0.0
April 16
 15.0 0.6 0.00 0.0
April 17
 20.6 0.6 0.00 0.0
April 18
 20.6 3.9 0.00 0.0
April 19
 23.3 5.0 0.00 0.0
April 20
 25.0 5.0 0.00 0.0
April 21
 26.7 13.9 0.69 0.0
April 22
 20.0 13.9 1.04 0.0
April 23
 11.1 7.2 0.03 0.0
April 24
 8.9 6.1 0.79 0.0
April 25
 8.9 3.3 0.18 0.0
April 26
 16.1 4.4 0.00 0.0
April 27
 16.1 2.2 0.00 0.0
April 28
 16.1 2.2 0.00 0.0
April 29
 16.1 -2.8 0.00 0.0
April 30
 18.3 2.8 0.00 0.0
May 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
May 1
 24.0 6.5 0.46 0.0
May 2
 18.0 10.0 0.90 0.0
May 3
 12.0 2.0 0.00 0.0
May 4
 18.0 1.0 0.00 0.0
May 5
 23.0 4.0 0.20 0.0
May 6
 22.5 14.0 0.00 0.0
May 7
 10.5 1.5 0.00 0.0
May 8
 9.0 1.0 0.03 0.0
May 9
 13.0 3.0 0.00 0.0
May 10
 13.0 6.0 0.00 0.0
May 11
 21.0 4.0 0.00 0.0
May 12
 19.5 7.0 0.20 0.0
May 13
 16.0 6.0 0.00 0.0
May 14
 15.0 3.0 0.00 0.0
May 15
 20.0 4.0 0.00 0.0
May 16
 25.0 10.0 0.00 0.0
May 17
 30.0 10.5 0.00 0.0
May 18
 23.0 15.5 0.00 0.0
May 19
 25.0 10.0 0.00 0.0
May 20
 26.0 14.5 0.00 0.0
May 21
 30.0 14.5 0.00 0.0
May 22
 30.0 15.5 0.00 0.0
May 23
 30.0 15.5 0.00 0.0
May 24
 30.0 16.0 0.00 0.0
May 25
 30.0 16.0 0.00 0.0
May 26
 23.0 9.5 0.00 0.0
May 27
 30.0 11.0 0.00 0.0
May 28
 14.0 7.0 1.48 0.0
May 29
 18.0 3.0 0.00 0.0
May 30
 23.0 6.0 0.00 0.0
May 31
 26.0 10.0 0.00 0.0
June 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
June 1
 24.0 16.0 0.10 0.0
June 2
 21.0 13.5 0.35 0.0
June 3
 13.0 5.0 0.00 0.0
June 4
 20.5 5.5 0.08 0.0
June 5
 20.5 13.5 0.00 0.0
June 6
 20.0 9.0 0.32 0.0
June 7
 11.0 8.5 0.46 0.0
June 8
 11.0 6.0 0.21 0.0
June 9
 16.5 6.5 0.00 0.0
June 10
 20.5 11.0 0.00 0.0
June 11
 22.0 11.0 0.00 0.0
June 12
 17.0 14.0 0.30 0.0
June 13
 25.0 14.0 0.00 0.0
June 14
 26.0 12.0 0.00 0.0
June 15
 25.0 13.5 0.00 0.0
June 16
 27.0 10.5 0.00 0.0
June 17
 25.0 15.0 0.50 0.0
June 18
 17.5 14.0 1.55 0.0
June 19
 22.5 15.0 0.50 0.0
June 20
 23.5 14.5 0.40 0.0
June 21
 21.0 13.0 0.00 0.0
June 22
 19.0 10.0 0.00 0.0
June 23
 24.5 10.5 0.00 0.0
June 24
 25.0 12.0 0.00 0.0
June 25
 23.0 16.0 0.46 0.0
June 26
 26.0 15.0 0.54 0.0
June 27
 29.0 15.0 0.00 0.0
June 28
 31.0 16.0 1.04 0.0
June 29
 24.5 20.0 1.53 0.0
June 30
 25.0 14.0 0.00 0.0
July 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
July 1
 25.5 19.5 0.00 0.0
July 2
 18.0 15.0 0.00 0.0
July 3
 24.5 11.0 0.10 0.0
July 4
 24.5 16.0 0.00 0.0
July 5
 27.0 19.0 0.06 0.0
July 6
 21.0 13.0 0.00 0.0
July 7
 24.5 9.0 0.00 0.0
July 8
 27.0 13.0 0.00 0.0
July 9
 25.0 17.0 0.00 0.0
July 10
 24.0 11.0 0.00 0.0
July 11
 27.0 10.0 0.00 0.0
July 12
 23.0 20.0 0.94 0.0
July 13
 27.0 20.0 0.30 0.0
July 14
 28.0 17.0 0.00 0.0
July 15
 30.5 17.0 1.58 0.0
July 16
 30.0 17.0 0.00 0.0
July 17
 30.5 21.5 7.30 0.0
July 18
 28.0 19.0 0.00 0.0
July 19
 31.5 19.0 0.00 0.0
July 20
 33.0 21.5 0.00 0.0
July 21
 29.0 21.5 0.00 0.0
July 22
 21.0 13.0 0.00 0.0
July 23
 26.0 11.0 0.00 0.0
July 24
 25.0 11.0 0.00 0.0
July 25
 25.0 19.0 0.15 0.0
July 26
 18.0 12.0 0.00 0.0
July 27
 23.0 12.0 0.00 0.0
July 28
 26.0 13.0 0.00 0.0
July 29
 27.0 17.0 0.80 0.0
July 30
 24.0 18.0 1.01 0.0
July 31
 28.0 12.5 0.00 0.0
August 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
August 1
 27.0 18.0 0.82 0.0
August 2
 26.5 16.0 0.00 0.0
August 3
 27.5 16.0 0.00 0.0
August 4
 28.0 19.0 0.00 0.0
August 5
 23.0 18.0 1.99 0.0
August 6
 26.0 19.0 0.00 0.0
August 7
 27.0 19.0 0.02 0.0
August 8
 25.0 20.0 1.62 0.0
August 9
 23.0 15.0 0.00 0.0
August 10
 18.0 14.0 1.30 0.0
August 11
 25.0 15.0 0.15 0.0
August 12
 24.0 18.0 0.00 0.0
August 13
 25.5 14.0 0.00 0.0
August 14
 23.5 18.0 0.96 0.0
August 15
 22.5 12.0 0.00 0.0
August 16
 18.0 12.0 2.50 0.0
August 17
 20.0 14.0 0.12 0.0
August 18
 17.5 13.0 0.04 0.0
August 19
 21.0 9.0 0.21 0.0
August 20
 18.0 9.0 0.20 0.0
August 21
 23.0 9.0 1.43 0.0
August 22
 21.0 10.0 3.02 0.0
August 23
 23.0 12.0 0.12 0.0
August 24
 19.0 11.0 0.85 0.0
August 25
 19.0 9.0 0.00 0.0
August 26
 23.5 9.5 0.00 0.0
August 27
 27.5 15.5 0.00 0.0
August 28
 31.0 19.5 0.00 0.0
August 29
 31.0 23.5 0.00 0.0
August 30
 21.0 15.5 0.10 0.0
August 31
 26.0 12.0 0.00 0.0
September 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
September 1
 29.5 19.0 0.30 0.0
September 2
 23.0 21.0 0.00 0.0
September 3
 23.0 16.0 0.12 0.0
September 4
 22.5 10.0 0.00 0.0
September 5
 23.0 16.0 0.03 0.0
September 6
 19.5 11.5 0.00 0.0
September 7
 18.0 8.0 0.00 0.0
September 8
 20.0 7.5 0.00 0.0
September 9
 26.0 10.5 0.10 0.0
September 10
 22.5 18.0 0.00 0.0
September 11
 16.5 10.5 0.00 0.0
September 12
 18.0 7.0 1.82 0.0
September 13
 16.0 14.0 2.20 0.0
September 14
 17.0 12.5 0.10 0.0
September 15
 19.0 5.5 0.00 0.0
September 16
 17.0 12.0 0.00 0.0
September 17
 20.0 14.0 0.70 0.0
September 18
 21.0 15.0 0.00 0.0
September 19
 22.0 14.0 0.00 0.0
September 20
 10.0 6.0 2.10 0.0
September 21
 10.0 8.5 0.03 0.0
September 22
 10.0 7.0 0.00 0.0
September 23
 15.0 9.0 0.00 0.0
September 24
 18.5 8.5 0.00 0.0
September 25
 12.0 9.5 0.42 0.0
September 26
 19.0 10.5 2.00 0.0
September 27
 17.0 13.5 0.40 0.0
September 28
 15.5 12.5 0.16 0.0
September 29
 12.0 7.5 0.06 0.0
September 30
 13.0 8.0 2.22 0.0
October 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
October 1
 9.0 8.0 3.94 0.0
October 2
 9.0 7.0 0.68 0.0
October 3
 10.0 7.0 0.37 0.0
October 4
 15.0 6.0 0.00 0.0
October 5
 17.0 7.0 0.00 0.0
October 6
 13.0 9.0 0.00 0.0
October 7
 8.0 0.0 0.00 0.0
October 8
 13.0 0.0 0.62 0.0
October 9
 14.5 6.0 1.50 0.0
October 10
 10.5 9.0 0.00 0.0
October 11
 15.5 2.0 0.10 0.0
October 12
 11.5 5.0 0.02 0.0
October 13
 10.0 2.0 0.00 0.0
October 14
 7.0 -1.0 0.13 0.0
October 15
 7.0 2.5 0.25 0.0
October 16
 7.0 3.0 1.65 0.0
October 17
 7.0 4.0 1.83 0.0
October 18
 8.0 3.0 0.00 0.0
October 19
 14.0 4.0 0.00 0.0
October 20
 13.0 5.0 0.00 0.0
October 21
 16.0 3.0 0.10 0.0
October 22
 15.5 10.0 0.42 0.0
October 23
 7.5 0.0 0.00 0.0
October 24
 12.0 -1.5 0.00 0.0
October 25
 18.5 4.0 0.00 0.0
October 26
 20.5 12.0 0.00 0.0
October 27
 15.5 7.5 0.00 0.0
October 28
 14.0 7.0 0.00 0.0
October 29
 11.5 0.5 0.00 0.0
October 30
 12.0 0.0 0.00 0.0
October 31
 13.0 -1.0 0.00 0.0
November 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
November 1
 16.0 5.0 0.00 0.0
November 2
 19.5 4.5 0.00 0.0
November 3
 18.5 13.0 0.30 0.0
November 4
 16.5 7.0 2.54 0.0
November 5
 8.5 3.5 0.30 0.0
November 6
 7.0 3.5 0.16 0.0
November 7
 8.5 4.0 0.91 0.0
November 8
 10.0 5.0 0.27 0.0
November 9
 11.5 6.0 0.00 0.0
November 10
 18.5 7.0 1.45 0.0
November 11
 5.0 1.0 0.09 0.0
November 12
 2.0 0.0 0.62 6.0
November 13
 1.0 -2.0 0.00 0.0
November 14
 0.0 -4.0 0.00 0.0
November 15
 9.0 -2.0 0.12 0.0
November 16
 15.0 3.5 0.38 0.0
November 17
 11.0 6.0 0.48 0.0
November 18
 5.0 2.0 0.20 0.0
November 19
 4.0 1.0 0.00 0.0
November 20
 5.5 -3.5 0.00 0.0
November 21
 9.0 1.5 0.54 0.0
November 22
 3.0 0.0 0.00 0.0
November 23
 7.0 -5.0 0.22 0.0
November 24
 6.5 -1.0 0.00 0.0
November 25
 1.5 -2.5 0.90 9.0
November 26
 -4.0 -13.0 1.00 10.0
November 27
 -8.0 -13.0 0.05 0.5
November 28
 -6.0 -14.0 0.40 4.0
November 29
 -3.5 -13.0 0.00 0.0
November 30
 1.0 -10.5 0.60 0.0
December 1977 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
December 1
 9.0 -2.5 1.39 0.0
December 2
 4.5 3.0 0.00 0.0
December 3
 2.5 1.0 0.00 0.0
December 4
 0.0 -3.0 0.24 2.4
December 5
 -4.5 -12.0 1.80 18.0
December 6
 -4.5 -7.0 1.30 13.0
December 7
 -7.0 -8.5 0.10 1.0
December 8
 -6.0 -14.0 0.90 9.0
December 9
 2.0 -10.5 0.31 3.1
December 10
 -13.0 -16.0 0.00 0.0
December 11
 -18.0 -22.0 0.00 0.0
December 12
 -14.0 -22.5 1.30 13.0
December 13
 -8.0 -18.0 0.43 4.3
December 14
 0.0 -12.0 0.08 0.8
December 15
 -0.5 -6.0 0.00 0.0
December 16
 0.5 -2.0 0.00 0.0
December 17
 -5.5 -9.5 0.00 0.0
December 18
 -1.0 -12.0 0.00 0.0
December 19
 -0.5 -5.0 0.00 0.0
December 20
 0.0 -5.0 0.32 3.2
December 21
 0.0 -1.0 2.50 25.0
December 22
 0.0 -3.0 0.16 1.6
December 23
 2.5 -3.0 0.00 0.0
December 24
 5.0 -1.0 0.26 0.0
December 25
 6.5 -2.5 0.00 0.0
December 26
 -7.0 -12.5 0.00 0.0
December 27
 -8.0 -17.0 0.00 0.0
December 28
 -8.0 -16.0 0.00 0.0
December 29
 -6.0 -11.0 0.10 1.0
December 30
 -4.0 -12.0 0.50 5.0
December 31
 -8.5 -15.0 0.00 0.0
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