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Cornwall Weather in 2017

Historical record of Cornwall, Ontario weather for the year 2017 based on NOAA data.
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Year:
2017 Cornwall Weather Extremes
Highest temperature 32.5 °C September 25
Lowest temperature -25.0 °C December 28
Highest daily low 25.0 °C May 18
Lowest daily high -20.0 °C December 28
Most daily precipitation 4.8 cm July 24
Most daily snow 35.0 cm February 12
Total annual precipitation 123.2 cm -
Total annual snow 240.4 cm -
What was the hottest temperature in Cornwall in 2017?
The highest temperature recorded in Cornwall, Ontario in 2017 was 32.5 °C which happened on September 25.
Highest Temperatures: All-Time By Year
Highest Temperatures in Cornwall in 2017
Rank Temperature Date
1 32.5 °C Sep 25
2 32.0 °C Jun 18
3 31.5 °C Jun 12
4 31.0 °C Sep 27
4 31.0 °C Sep 24
4 31.0 °C Sep 23
7 30.5 °C Aug 18
7 30.5 °C Aug 2
9 30.0 °C Sep 26
9 30.0 °C Aug 4
9 30.0 °C May 18
9 30.0 °C May 17
What was the coldest temperature in Cornwall in 2017?
The lowest temperature recorded in Cornwall, Ontario in 2017 was -25.0 °C which happened on Dec 28.
Lowest Temperatures: All-Time By Year
Lowest Temperatures in Cornwall in 2017
Rank Temperature Date
1 -25.0 °C December 28
2 -24.0 °C December 30
3 -23.5 °C December 31
4 -23.0 °C December 29
4 -23.0 °C December 27
6 -19.5 °C March 11
7 -19.0 °C December 17
7 -19.0 °C December 15
9 -18.0 °C December 14
9 -18.0 °C January 31
9 -18.0 °C January 9
January 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
January 1
 0.5 -7.0 0.00 0.0
January 2
 3.5 -6.5 0.00 0.0
January 3
 1.0 -5.0 2.11 2.0
January 4
 4.0 0.0 0.22 0.0
January 5
 -3.5 -6.5 0.00 0.0
January 6
 -5.5 -10.0 0.00 0.0
January 7
 -7.5 -15.0 0.00 0.0
January 8
 -9.0 -17.0 0.00 0.0
January 9
 -4.0 -18.0 0.00 0.0
January 10
 6.0 -6.0 0.00 0.0
January 11
 10.0 -1.0 0.40 0.0
January 12
 10.0 3.0 0.20 0.0
January 13
 -5.0 -7.0 0.00 0.0
January 14
 -5.0 -16.0 0.00 0.0
January 15
 -4.0 -11.0 0.00 0.0
January 16
 4.0 -8.5 0.00 0.0
January 17
 1.0 -5.0 0.34 3.4
January 18
 1.5 -4.0 0.00 0.0
January 19
 2.5 -1.0 0.00 0.0
January 20
 3.0 0.0 0.00 0.0
January 21
 3.5 0.0 0.00 0.0
January 22
 2.0 0.0 0.00 0.0
January 23
 0.0 -2.0 0.00 0.0
January 24
 -2.5 -3.0 0.40 4.0
January 25
 1.5 -3.5 0.00 0.0
January 26
 1.5 0.0 0.06 0.0
January 27
 2.0 0.0 0.30 3.0
January 28
 1.5 -2.5 0.70 7.0
January 29
 -1.5 -3.0 0.30 3.0
January 30
 -8.0 -13.0 0.00 0.0
January 31
 -5.0 -18.0 0.30 3.0
February 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
February 1
 -1.0 -12.0 0.10 1.0
February 2
 -3.0 -11.0 0.50 5.0
February 3
 -4.0 -7.5 0.00 0.0
February 4
 -2.0 -10.0 0.00 n/a
February 5
 1.0 -5.0 0.30 3.0
February 6
 -8.0 -12.5 1.20 12.0
February 7
 9.0 -10.0 0.00 0.0
February 8
 4.5 -9.0 0.00 0.0
February 9
 -11.0 -14.0 0.00 0.0
February 10
 -11.0 -15.5 0.40 4.0
February 11
 -9.5 -13.0 0.20 2.0
February 12
 -2.0 -12.0 3.50 35.0
February 13
 -3.0 -9.0 0.00 0.0
February 14
 -0.5 -11.5 0.50 5.0
February 15
 -2.5 -4.0 0.90 9.0
February 16
 -4.0 -7.0 0.20 2.0
February 17
 -2.0 -8.5 0.00 0.0
February 18
 11.5 -6.0 0.00 0.0
February 19
 9.0 2.5 0.00 0.0
February 20
 2.0 -5.0 0.00 0.0
February 21
 2.0 -6.0 0.00 0.0
February 22
 7.0 -1.0 0.00 0.0
February 23
 16.5 5.0 0.00 0.0
February 24
 4.0 2.0 0.10 0.0
February 25
 9.0 0.0 1.50 0.0
February 26
 1.0 -5.0 0.00 0.0
February 27
 n/a n/a n/a n/a
February 28
 n/a n/a n/a n/a
March 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
March 1
 n/a n/a n/a n/a
March 2
 n/a n/a n/a n/a
March 3
 n/a n/a n/a n/a
March 4
 -14.0 -17.0 0.00 0.0
March 5
 -5.5 -17.0 0.00 0.0
March 6
 1.0 -12.5 0.00 0.0
March 7
 10.0 -1.0 0.92 0.0
March 8
 11.0 2.5 0.00 0.0
March 9
 2.0 -3.0 0.00 0.0
March 10
 -4.0 -7.0 0.00 0.0
March 11
 -13.0 -19.5 0.00 0.0
March 12
 -10.0 -16.5 0.00 0.0
March 13
 -8.0 -16.0 0.10 1.0
March 14
 -8.0 -9.0 2.60 26.0
March 15
 -6.0 -10.0 0.60 6.0
March 16
 -3.0 -10.0 0.00 0.0
March 17
 0.0 -9.0 0.00 0.0
March 18
 1.0 -15.0 0.00 0.0
March 19
 5.0 -10.0 0.00 0.0
March 20
 6.0 -7.5 0.00 0.0
March 21
 3.0 1.0 0.00 0.0
March 22
 -7.0 -13.0 0.00 0.0
March 23
 2.0 -11.5 0.40 4.0
March 24
 1.5 -3.0 1.40 14.0
March 25
 2.0 -1.0 0.00 0.0
March 26
 1.0 -7.5 0.00 0.0
March 27
 4.0 0.0 0.87 0.0
March 28
 6.0 1.5 0.18 0.0
March 29
 6.0 2.0 0.00 0.0
March 30
 5.5 -2.5 0.00 0.0
March 31
 3.0 1.0 0.96 4.0
April 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
April 1
 3.0 0.0 0.08 n/a
April 2
 10.0 -1.5 0.00 0.0
April 3
 11.0 -2.0 0.60 0.0
April 4
 9.0 2.0 1.40 0.0
April 5
 7.0 4.0 0.40 0.0
April 6
 5.0 3.0 4.60 0.0
April 7
 5.0 3.0 0.30 0.0
April 8
 10.0 0.0 0.00 0.0
April 9
 19.0 1.0 0.00 0.0
April 10
 26.0 12.0 0.26 0.0
April 11
 11.0 10.5 0.22 0.0
April 12
 11.0 5.0 0.00 0.0
April 13
 13.5 3.0 0.00 0.0
April 14
 15.0 0.0 0.00 0.0
April 15
 20.0 1.0 1.00 0.0
April 16
 21.5 11.0 0.36 0.0
April 17
 10.5 6.5 0.00 0.0
April 18
 11.0 -1.0 0.00 0.0
April 19
 12.5 4.5 1.16 0.0
April 20
 10.5 5.5 0.40 0.0
April 21
 18.0 6.0 0.10 0.0
April 22
 10.0 6.5 0.00 0.0
April 23
 18.0 2.0 0.00 0.0
April 24
 10.0 2.0 0.00 0.0
April 25
 13.0 4.0 0.40 0.0
April 26
 18.5 9.0 0.06 0.0
April 27
 27.0 11.0 0.00 0.0
April 28
 20.0 4.0 0.10 0.0
April 29
 20.0 15.0 0.00 0.0
April 30
 6.5 1.0 2.67 0.0
May 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
May 1
 14.0 4.0 3.20 0.0
May 2
 16.0 9.5 0.20 0.0
May 3
 14.0 5.5 0.00 0.0
May 4
 17.0 3.5 1.16 0.0
May 5
 9.5 8.0 2.40 0.0
May 6
 23.0 8.0 0.52 0.0
May 7
 9.0 6.0 0.20 0.0
May 8
 5.0 0.5 0.00 0.0
May 9
 9.0 1.0 0.00 0.0
May 10
 14.0 3.5 0.00 0.0
May 11
 13.0 5.0 0.00 0.0
May 12
 20.0 7.0 0.00 0.0
May 13
 18.0 11.0 0.30 0.0
May 14
 14.5 10.0 0.52 0.0
May 15
 21.0 9.0 0.00 0.0
May 16
 22.0 10.0 0.00 0.0
May 17
 30.0 12.0 0.00 0.0
May 18
 30.0 25.0 0.50 0.0
May 19
 17.0 10.0 0.00 0.0
May 20
 17.0 5.0 0.00 0.0
May 21
 20.0 8.0 0.84 0.0
May 22
 17.0 12.0 0.20 0.0
May 23
 22.0 9.0 0.00 0.0
May 24
 24.0 10.0 0.00 0.0
May 25
 19.0 14.0 1.22 0.0
May 26
 16.0 12.0 0.32 0.0
May 27
 23.0 10.0 0.00 0.0
May 28
 26.0 12.0 0.00 0.0
May 29
 19.0 14.0 2.10 0.0
May 30
 24.0 11.5 0.48 0.0
May 31
 24.0 12.5 0.00 0.0
June 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
June 1
 18.0 13.5 0.28 0.0
June 2
 15.0 7.5 0.00 0.0
June 3
 19.0 9.5 0.00 0.0
June 4
 20.0 10.0 0.00 0.0
June 5
 15.0 13.0 0.87 0.0
June 6
 13.0 11.0 1.20 0.0
June 7
 25.0 7.0 0.00 0.0
June 8
 28.0 13.0 0.00 0.0
June 9
 25.5 16.0 0.00 0.0
June 10
 28.0 12.0 0.00 0.0
June 11
 29.0 21.0 0.00 0.0
June 12
 31.5 21.5 0.00 0.0
June 13
 26.0 21.0 0.00 0.0
June 14
 22.0 11.5 0.00 0.0
June 15
 25.0 10.0 1.02 0.0
June 16
 23.0 14.0 0.00 0.0
June 17
 26.5 15.0 0.00 0.0
June 18
 32.0 21.5 0.48 0.0
June 19
 26.5 21.0 0.42 0.0
June 20
 24.0 17.0 0.10 0.0
June 21
 22.5 14.0 0.50 0.0
June 22
 24.5 14.0 0.88 0.0
June 23
 26.0 17.0 0.76 0.0
June 24
 27.0 16.5 0.98 0.0
June 25
 23.0 13.5 1.78 0.0
June 26
 23.0 12.0 0.30 0.0
June 27
 20.0 11.0 0.10 0.0
June 28
 26.0 12.0 0.20 0.0
June 29
 19.0 14.0 3.05 0.0
June 30
 24.0 16.0 0.60 0.0
July 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
July 1
 24.0 19.0 3.20 0.0
July 2
 25.0 17.0 0.00 0.0
July 3
 25.0 16.0 0.00 0.0
July 4
 26.0 15.0 0.00 0.0
July 5
 27.5 13.5 0.00 0.0
July 6
 28.0 17.5 0.00 0.0
July 7
 27.0 21.0 2.20 0.0
July 8
 24.0 18.0 0.20 0.0
July 9
 24.5 15.0 1.38 0.0
July 10
 25.5 16.5 0.12 0.0
July 11
 29.0 18.0 0.00 0.0
July 12
 21.5 17.5 0.14 0.0
July 13
 23.5 12.5 0.00 0.0
July 14
 20.5 16.0 2.56 0.0
July 15
 28.0 17.5 0.00 0.0
July 16
 28.0 17.5 0.20 0.0
July 17
 27.0 18.0 0.00 0.0
July 18
 29.0 19.0 0.00 0.0
July 19
 29.0 22.0 0.10 0.0
July 20
 29.0 21.0 0.10 0.0
July 21
 29.0 20.0 0.00 0.0
July 22
 29.0 17.0 0.00 0.0
July 23
 24.0 16.0 0.54 0.0
July 24
 15.5 14.5 4.80 0.0
July 25
 22.0 13.5 0.00 0.0
July 26
 24.0 13.5 0.12 0.0
July 27
 26.5 17.5 0.10 0.0
July 28
 28.0 15.0 0.00 0.0
July 29
 25.0 11.0 0.00 0.0
July 30
 27.0 12.5 0.00 0.0
July 31
 29.0 17.0 0.00 0.0
August 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
August 1
 28.5 16.0 0.00 0.0
August 2
 30.5 17.5 0.00 0.0
August 3
 29.0 17.5 0.10 0.0
August 4
 30.0 17.5 1.82 0.0
August 5
 24.5 18.5 0.40 0.0
August 6
 22.0 13.0 0.10 0.0
August 7
 22.0 13.0 0.00 0.0
August 8
 25.0 13.5 0.00 0.0
August 9
 21.0 16.0 0.00 0.0
August 10
 27.0 16.0 0.00 0.0
August 11
 29.0 16.0 3.10 0.0
August 12
 28.0 16.0 0.00 0.0
August 13
 26.0 17.0 0.10 0.0
August 14
 26.5 16.0 0.30 0.0
August 15
 27.5 18.0 0.54 0.0
August 16
 22.5 14.0 0.00 0.0
August 17
 25.0 13.0 2.80 0.0
August 18
 30.5 17.5 0.00 0.0
August 19
 26.0 20.0 0.00 0.0
August 20
 26.5 16.5 0.00 0.0
August 21
 29.0 18.0 0.00 0.0
August 22
 29.0 19.5 0.90 0.0
August 23
 23.5 16.0 0.43 0.0
August 24
 21.0 14.0 0.00 0.0
August 25
 21.0 10.0 0.00 0.0
August 26
 22.0 9.0 0.00 0.0
August 27
 28.0 11.0 0.00 0.0
August 28
 25.0 14.0 0.00 0.0
August 29
 24.0 14.0 0.00 0.0
August 30
 24.0 11.0 0.10 0.0
August 31
 17.0 13.0 0.00 0.0
September 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
September 1
 17.0 6.0 0.00 0.0
September 2
 21.0 9.0 0.50 0.0
September 3
 15.0 11.0 0.86 0.0
September 4
 25.0 13.0 0.40 0.0
September 5
 20.0 17.0 0.00 0.0
September 6
 19.0 13.0 0.40 0.0
September 7
 19.5 14.0 0.40 0.0
September 8
 18.0 12.0 0.28 0.0
September 9
 20.0 11.0 0.00 0.0
September 10
 20.0 7.0 0.00 0.0
September 11
 23.0 9.0 0.00 0.0
September 12
 24.5 11.0 0.00 0.0
September 13
 26.0 13.0 0.00 0.0
September 14
 27.0 14.5 0.00 0.0
September 15
 28.0 15.0 0.00 0.0
September 16
 27.5 16.5 0.00 0.0
September 17
 29.0 16.0 0.00 0.0
September 18
 29.0 14.0 0.00 0.0
September 19
 28.0 17.0 0.00 0.0
September 20
 27.0 15.0 0.00 0.0
September 21
 27.0 14.0 0.00 0.0
September 22
 27.0 12.0 0.00 0.0
September 23
 31.0 14.0 0.00 0.0
September 24
 31.0 19.0 0.00 0.0
September 25
 32.5 19.0 0.00 0.0
September 26
 30.0 19.0 0.00 0.0
September 27
 31.0 19.0 0.00 0.0
September 28
 17.0 10.0 0.00 0.0
September 29
 16.0 5.0 0.00 0.0
September 30
 15.5 7.0 0.00 0.0
October 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
October 1
 18.0 5.0 0.00 0.0
October 2
 21.0 7.0 0.00 0.0
October 3
 25.0 6.5 0.00 0.0
October 4
 26.5 14.0 0.50 0.0
October 5
 21.0 12.0 0.00 0.0
October 6
 18.0 12.0 0.00 0.0
October 7
 23.0 10.0 1.12 0.0
October 8
 24.0 17.5 0.40 0.0
October 9
 18.0 14.0 4.00 0.0
October 10
 23.0 15.0 0.00 0.0
October 11
 12.0 7.0 0.00 0.0
October 12
 17.0 4.0 0.00 0.0
October 13
 17.0 3.0 0.05 0.0
October 14
 19.0 14.0 0.70 0.0
October 15
 24.0 15.0 0.70 0.0
October 16
 7.5 5.0 0.00 0.0
October 17
 14.0 0.0 0.00 0.0
October 18
 20.5 10.0 0.00 0.0
October 19
 20.5 8.5 0.00 0.0
October 20
 18.0 10.0 0.00 0.0
October 21
 23.0 10.0 0.00 0.0
October 22
 23.5 8.5 0.00 0.0
October 23
 25.0 8.0 0.00 0.0
October 24
 24.0 15.0 1.10 0.0
October 25
 16.0 11.0 0.00 0.0
October 26
 12.5 5.0 0.00 0.0
October 27
 13.0 4.5 0.00 0.0
October 28
 23.0 4.0 0.36 0.0
October 29
 16.0 6.5 3.40 0.0
October 30
 11.5 7.0 0.85 0.0
October 31
 11.0 5.0 0.00 0.0
November 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
November 1
 10.0 2.0 1.10 0.0
November 2
 17.0 5.0 1.95 0.0
November 3
 12.0 8.0 0.20 0.0
November 4
 7.0 0.0 0.20 0.0
November 5
 16.0 3.0 1.34 0.0
November 6
 12.0 7.0 0.00 0.0
November 7
 4.0 -1.0 0.00 0.0
November 8
 6.0 -1.0 0.00 0.0
November 9
 9.0 0.0 0.34 0.0
November 10
 -5.0 -10.0 0.00 0.0
November 11
 -2.5 -10.0 0.00 0.0
November 12
 4.0 -5.0 0.00 0.0
November 13
 1.0 -2.5 0.00 0.0
November 14
 3.5 -1.0 0.00 0.0
November 15
 8.0 -3.0 0.14 0.0
November 16
 10.0 3.0 0.06 0.0
November 17
 -1.0 -4.0 0.00 0.0
November 18
 2.0 -5.5 1.60 4.0
November 19
 0.5 -2.0 0.30 3.0
November 20
 -3.0 -7.0 0.00 0.0
November 21
 12.0 -5.0 0.00 0.0
November 22
 0.0 -1.0 0.00 0.0
November 23
 3.0 -8.0 0.00 0.0
November 24
 10.0 -1.0 0.00 0.0
November 25
 11.0 6.0 0.80 0.0
November 26
 1.0 -4.0 0.70 7.0
November 27
 -4.0 -6.0 0.70 7.0
November 28
 13.0 -13.0 0.00 0.0
November 29
 6.5 0.0 0.00 0.0
November 30
 5.5 -7.0 0.00 0.0
December 2017 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
December 1
 4.0 0.0 0.00 0.0
December 2
 5.0 0.0 0.00 0.0
December 3
 5.0 -2.0 0.00 0.0
December 4
 9.0 -3.5 0.00 0.0
December 5
 13.0 7.0 0.62 0.0
December 6
 4.0 0.0 0.00 0.0
December 7
 2.0 -1.0 0.00 0.0
December 8
 0.5 -3.5 0.00 0.0
December 9
 0.0 -2.5 0.00 0.0
December 10
 -1.0 -4.5 0.00 0.0
December 11
 -8.0 -12.0 0.40 4.0
December 12
 -6.0 -11.0 0.90 9.0
December 13
 -12.0 -17.0 0.00 0.0
December 14
 -13.0 -18.0 0.00 0.0
December 15
 -6.0 -19.0 0.40 4.0
December 16
 -5.0 -10.0 0.00 0.0
December 17
 -12.0 -19.0 0.00 0.0
December 18
 -2.5 -17.0 0.80 8.0
December 19
 4.5 -10.0 0.00 0.0
December 20
 -1.5 -3.5 0.00 0.0
December 21
 -10.0 -13.5 0.00 0.0
December 22
 -9.0 -15.0 0.50 5.0
December 23
 -6.0 -12.5 1.10 11.0
December 24
 -4.0 -7.0 1.60 16.0
December 25
 -4.0 -8.0 0.30 3.0
December 26
 -11.5 -13.0 0.00 0.0
December 27
 -17.5 -23.0 0.00 0.0
December 28
 -20.0 -25.0 0.00 0.0
December 29
 -18.0 -23.0 0.00 0.0
December 30
 -17.0 -24.0 0.10 1.0
December 31
 -19.5 -23.5 0.00 0.0
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