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Cornwall Weather in 1999

Historical record of Cornwall, Ontario weather for the year 1999 based on NOAA data.
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Year:
1999 Cornwall Weather Extremes
Highest temperature 34.5 °C September 4
Lowest temperature -28.5 °C January 14
Highest daily low 25.0 °C July 5
Lowest daily high -16.5 °C January 1
Most daily precipitation 4.2 cm September 16
Most daily snow 16.0 cm January 15
Total annual precipitation 96.0 cm -
Total annual snow 184.0 cm -
What was the hottest temperature in Cornwall in 1999?
The highest temperature recorded in Cornwall, Ontario in 1999 was 34.5 °C which happened 2 different times.
Highest Temperatures: All-Time By Year
Highest Temperatures in Cornwall in 1999
Rank Temperature Date
1 34.5 °C Sep 4
1 34.5 °C Jun 27
3 33.5 °C Jul 17
4 33.0 °C Sep 5
4 33.0 °C Sep 3
4 33.0 °C Jul 16
4 33.0 °C Jul 5
4 33.0 °C Jun 7
4 33.0 °C May 31
10 32.5 °C Jun 24
What was the coldest temperature in Cornwall in 1999?
The lowest temperature recorded in Cornwall, Ontario in 1999 was -28.5 °C which happened on Jan 14.
Lowest Temperatures: All-Time By Year
Lowest Temperatures in Cornwall in 1999
Rank Temperature Date
1 -28.5 °C January 14
2 -25.0 °C January 2
3 -22.0 °C January 15
3 -22.0 °C January 1
5 -21.0 °C January 13
5 -21.0 °C January 12
7 -20.5 °C January 31
8 -19.5 °C January 5
9 -19.0 °C December 31
9 -19.0 °C December 28
9 -19.0 °C February 22
January 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
January 1
 -16.5 -22.0 0.00 0.0
January 2
 -11.0 -25.0 1.56 15.6
January 3
 -1.5 -16.0 0.80 8.0
January 4
 -3.5 -7.0 0.00 0.0
January 5
 -7.5 -19.5 0.00 0.0
January 6
 -3.5 -10.0 0.30 3.0
January 7
 -12.0 -17.5 0.00 0.0
January 8
 -5.5 -16.0 1.00 10.0
January 9
 -7.0 -9.5 0.77 7.7
January 10
 -7.0 -18.0 0.00 0.0
January 11
 -10.0 -18.0 0.52 5.2
January 12
 -11.0 -21.0 0.34 3.4
January 13
 -13.5 -21.0 0.20 2.0
January 14
 -13.0 -28.5 1.44 14.4
January 15
 -8.0 -22.0 1.60 16.0
January 16
 3.0 -10.0 0.00 0.0
January 17
 6.0 2.0 0.00 0.0
January 18
 5.0 -4.0 3.58 1.8
January 19
 3.0 0.5 0.00 0.0
January 20
 1.5 -1.0 0.00 0.0
January 21
 -1.5 -4.0 0.00 0.0
January 22
 1.0 -8.0 1.01 0.0
January 23
 12.5 -5.0 0.30 0.0
January 24
 11.0 3.0 0.00 0.0
January 25
 -4.5 -8.0 0.00 0.0
January 26
 0.0 -9.5 0.00 0.0
January 27
 -1.0 -5.0 n/a n/a
January 28
 -11.0 -13.0 0.65 6.5
January 29
 -7.5 -17.0 0.00 0.0
January 30
 -7.0 -14.0 0.10 1.0
January 31
 -5.0 -20.5 0.00 0.0
February 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
February 1
 2.0 -12.0 0.00 0.0
February 2
 7.0 -8.0 0.50 0.0
February 3
 6.5 2.0 0.00 0.0
February 4
 9.0 1.0 0.10 0.0
February 5
 -6.5 -9.5 0.32 3.2
February 6
 -4.0 -12.0 0.20 2.0
February 7
 -3.0 -11.0 0.00 0.0
February 8
 -3.0 -14.0 0.00 0.0
February 9
 7.0 -11.5 0.00 0.0
February 10
 3.0 -0.5 0.00 0.0
February 11
 -1.0 -6.0 0.00 0.0
February 12
 14.0 -3.0 0.54 4.0
February 13
 -1.5 -5.0 0.00 0.0
February 14
 -8.0 -16.0 0.00 0.0
February 15
 3.0 -12.0 0.00 0.0
February 16
 1.0 -8.0 0.00 0.0
February 17
 3.0 -4.5 0.15 0.0
February 18
 3.0 0.0 0.00 0.0
February 19
 -1.0 -5.0 0.00 0.0
February 20
 -2.0 -10.0 0.00 0.0
February 21
 -6.5 -11.0 0.00 0.0
February 22
 -11.0 -19.0 0.00 0.0
February 23
 -7.0 -18.0 0.00 0.0
February 24
 -3.5 -14.5 0.00 0.0
February 25
 0.0 -11.5 0.00 0.0
February 26
 4.0 -7.0 0.00 0.0
February 27
 5.0 -5.5 0.00 0.0
February 28
 4.0 -3.0 1.16 6.0
March 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
March 1
 2.5 0.0 0.70 6.0
March 2
 3.0 -4.0 0.05 0.5
March 3
 3.5 -4.0 1.78 5.8
March 4
 4.0 -5.0 0.43 4.3
March 5
 -6.5 -11.0 0.00 0.0
March 6
 -9.0 -12.0 1.42 14.2
March 7
 -7.0 -15.5 0.00 0.0
March 8
 -5.0 -15.0 0.00 0.0
March 9
 -3.0 -14.5 0.00 0.0
March 10
 -3.0 -13.0 0.00 0.0
March 11
 -2.5 -10.0 0.45 4.5
March 12
 -4.5 -9.0 0.20 2.0
March 13
 -1.0 -7.5 0.00 0.0
March 14
 4.0 -6.0 0.00 0.0
March 15
 3.5 -7.0 0.00 0.0
March 16
 5.0 -6.0 0.00 0.0
March 17
 9.0 n/a 0.00 0.0
March 18
 8.0 3.0 0.15 0.0
March 19
 2.5 -1.0 0.00 0.0
March 20
 1.0 -5.5 0.00 0.0
March 21
 7.0 -3.0 2.30 4.0
March 22
 3.0 0.0 0.91 3.4
March 23
 5.0 -1.0 0.00 0.0
March 24
 8.0 -1.0 0.00 0.0
March 25
 1.0 -6.0 0.00 0.0
March 26
 5.5 -4.0 0.00 0.0
March 27
 11.0 -3.5 0.00 0.0
March 28
 13.5 -2.0 0.00 0.0
March 29
 14.0 2.0 0.00 0.0
March 30
 12.0 3.0 0.00 0.0
March 31
 16.0 2.5 0.00 0.0
April 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
April 1
 10.0 0.5 0.00 0.0
April 2
 8.5 2.0 0.05 0.0
April 3
 10.0 3.0 0.20 0.0
April 4
 7.5 -1.5 0.00 0.0
April 5
 11.0 -3.0 0.00 0.0
April 6
 21.5 -1.0 0.44 0.0
April 7
 13.0 6.0 0.50 0.0
April 8
 14.0 6.5 0.16 0.0
April 9
 11.0 1.0 0.00 0.0
April 10
 7.5 -1.0 0.00 0.0
April 11
 8.5 -4.0 0.00 0.0
April 12
 11.0 -1.5 0.00 0.0
April 13
 13.0 0.0 0.00 0.0
April 14
 13.0 2.0 0.00 0.0
April 15
 13.0 0.0 0.00 0.0
April 16
 14.5 0.0 0.46 0.0
April 17
 11.0 6.0 0.00 0.0
April 18
 17.0 5.5 0.00 0.0
April 19
 14.5 6.0 0.00 0.0
April 20
 14.5 3.0 0.00 0.0
April 21
 15.5 4.5 0.00 0.0
April 22
 17.5 5.0 0.04 0.0
April 23
 10.5 1.0 0.00 0.0
April 24
 11.0 -2.0 0.00 0.0
April 25
 16.0 -1.0 0.00 0.0
April 26
 13.0 7.0 0.00 0.0
April 27
 16.0 0.0 0.00 0.0
April 28
 17.5 2.0 0.00 0.0
April 29
 20.0 3.0 0.00 0.0
April 30
 21.0 5.0 0.00 0.0
May 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
May 1
 25.0 5.0 0.00 0.0
May 2
 27.0 7.0 0.00 0.0
May 3
 27.5 9.5 0.00 0.0
May 4
 27.0 10.0 0.00 0.0
May 5
 27.5 10.0 0.00 0.0
May 6
 29.0 14.0 0.00 0.0
May 7
 28.5 18.5 0.00 0.0
May 8
 24.0 15.5 1.90 0.0
May 9
 17.5 10.0 0.66 0.0
May 10
 14.5 5.5 0.00 0.0
May 11
 16.0 4.0 0.00 0.0
May 12
 15.0 4.0 0.00 0.0
May 13
 15.5 3.0 0.00 0.0
May 14
 22.0 3.0 0.00 0.0
May 15
 26.0 6.0 0.00 0.0
May 16
 25.5 10.5 0.00 0.0
May 17
 27.0 12.0 0.00 0.0
May 18
 31.0 16.0 0.02 0.0
May 19
 18.5 16.5 1.04 0.0
May 20
 19.0 6.0 0.00 0.0
May 21
 22.0 5.0 0.00 0.0
May 22
 25.0 11.0 0.00 0.0
May 23
 22.5 11.0 0.20 0.0
May 24
 23.5 15.5 0.62 0.0
May 25
 15.0 11.0 0.99 0.0
May 26
 16.0 8.0 0.26 0.0
May 27
 18.5 9.0 0.00 0.0
May 28
 26.0 7.5 0.00 0.0
May 29
 28.5 13.5 0.00 0.0
May 30
 31.0 15.5 0.00 0.0
May 31
 33.0 18.0 0.00 0.0
June 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
June 1
 22.5 20.0 0.40 0.0
June 2
 27.5 19.0 3.22 0.0
June 3
 21.5 18.0 0.06 0.0
June 4
 23.0 10.5 0.00 0.0
June 5
 25.0 11.5 0.00 0.0
June 6
 29.0 17.0 0.04 0.0
June 7
 33.0 22.0 0.17 0.0
June 8
 28.0 21.0 0.32 0.0
June 9
 19.5 15.5 0.04 0.0
June 10
 26.0 16.0 0.00 0.0
June 11
 30.0 16.0 0.00 0.0
June 12
 32.0 18.0 0.00 0.0
June 13
 31.0 17.0 0.34 0.0
June 14
 28.5 19.0 0.12 0.0
June 15
 17.0 12.0 0.05 0.0
June 16
 20.0 7.0 0.00 0.0
June 17
 22.0 12.0 0.00 0.0
June 18
 22.0 11.5 0.39 0.0
June 19
 25.0 10.0 0.00 0.0
June 20
 28.0 15.0 0.02 0.0
June 21
 28.5 12.0 0.00 0.0
June 22
 31.0 15.0 0.00 0.0
June 23
 30.0 16.0 0.00 0.0
June 24
 32.5 18.0 0.00 0.0
June 25
 25.0 18.0 0.34 0.0
June 26
 32.0 18.5 0.00 0.0
June 27
 34.5 17.5 1.38 0.0
June 28
 29.0 22.0 0.02 0.0
June 29
 28.0 21.0 0.30 0.0
June 30
 25.0 15.0 0.00 0.0
July 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
July 1
 31.0 15.0 0.50 0.0
July 2
 28.5 22.0 0.00 0.0
July 3
 29.5 16.0 0.25 0.0
July 4
 31.5 21.0 0.20 0.0
July 5
 33.0 25.0 1.24 0.0
July 6
 30.5 20.0 1.86 0.0
July 7
 25.5 19.0 1.30 0.0
July 8
 23.0 13.0 0.26 0.0
July 9
 20.0 14.0 1.84 0.0
July 10
 20.5 14.0 0.18 0.0
July 11
 25.0 12.0 0.00 0.0
July 12
 27.5 15.0 0.00 0.0
July 13
 28.0 17.0 0.00 0.0
July 14
 30.0 15.5 0.00 0.0
July 15
 29.5 18.5 0.00 0.0
July 16
 33.0 21.0 0.00 0.0
July 17
 33.5 22.5 1.60 0.0
July 18
 29.5 21.0 0.00 0.0
July 19
 25.0 19.0 0.00 0.0
July 20
 25.0 14.0 0.00 0.0
July 21
 28.0 14.5 0.00 0.0
July 22
 30.0 16.0 0.00 0.0
July 23
 30.0 19.0 0.52 0.0
July 24
 29.0 20.0 2.42 0.0
July 25
 28.5 18.0 0.10 0.0
July 26
 27.0 18.0 0.00 0.0
July 27
 30.5 20.0 0.14 0.0
July 28
 29.0 18.0 0.00 0.0
July 29
 30.0 17.0 0.10 0.0
July 30
 32.0 19.5 0.00 0.0
July 31
 31.0 21.0 0.08 0.0
August 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
August 1
 28.0 23.0 0.00 0.0
August 2
 22.5 14.5 0.00 0.0
August 3
 26.0 16.0 0.18 0.0
August 4
 21.0 16.5 0.56 0.0
August 5
 24.0 15.0 0.28 0.0
August 6
 21.5 13.5 0.38 0.0
August 7
 23.5 12.0 0.54 0.0
August 8
 22.0 15.0 0.40 0.0
August 9
 20.5 10.0 0.02 0.0
August 10
 23.0 11.0 0.00 0.0
August 11
 23.0 15.0 0.00 0.0
August 12
 28.5 18.0 0.00 0.0
August 13
 25.0 17.0 1.00 0.0
August 14
 21.5 17.0 0.00 0.0
August 15
 25.0 11.0 0.00 0.0
August 16
 26.5 13.0 0.00 0.0
August 17
 28.0 17.0 0.10 0.0
August 18
 26.5 18.0 0.00 0.0
August 19
 27.0 13.0 0.00 0.0
August 20
 29.5 14.0 0.02 0.0
August 21
 23.0 18.0 0.00 0.0
August 22
 26.5 13.0 0.02 0.0
August 23
 29.5 16.0 0.00 0.0
August 24
 31.5 15.5 0.00 0.0
August 25
 30.5 20.5 0.02 0.0
August 26
 29.5 19.0 0.00 0.0
August 27
 28.5 20.0 0.00 0.0
August 28
 31.0 19.5 0.00 0.0
August 29
 21.0 14.5 0.00 0.0
August 30
 24.0 9.0 0.00 0.0
August 31
 27.0 9.0 0.00 0.0
September 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
September 1
 30.5 12.0 0.00 0.0
September 2
 31.5 16.0 0.00 0.0
September 3
 33.0 16.0 0.00 0.0
September 4
 34.5 15.0 0.00 0.0
September 5
 33.0 21.0 0.00 0.0
September 6
 29.0 20.5 2.54 0.0
September 7
 24.0 20.5 1.26 0.0
September 8
 23.5 20.0 0.60 0.0
September 9
 29.0 17.0 0.41 0.0
September 10
 22.5 18.0 0.26 0.0
September 11
 23.5 14.0 0.00 0.0
September 12
 24.5 12.0 0.00 0.0
September 13
 29.0 13.5 0.30 0.0
September 14
 19.5 17.5 0.18 0.0
September 15
 22.5 14.0 0.00 0.0
September 16
 17.0 12.5 4.20 0.0
September 17
 18.0 11.0 0.60 0.0
September 18
 21.5 9.0 0.00 0.0
September 19
 24.5 10.5 0.00 0.0
September 20
 26.0 14.5 2.00 0.0
September 21
 12.5 8.5 0.00 0.0
September 22
 8.0 7.0 1.90 0.0
September 23
 21.5 6.0 0.04 0.0
September 24
 20.0 13.0 0.52 0.0
September 25
 17.0 10.0 0.29 0.0
September 26
 20.0 4.0 0.00 0.0
September 27
 24.0 9.0 0.00 0.0
September 28
 27.0 13.0 0.00 0.0
September 29
 25.5 19.0 0.98 0.0
September 30
 18.5 10.5 0.22 0.0
October 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
October 1
 18.0 8.5 0.12 0.0
October 2
 16.5 7.0 0.38 0.0
October 3
 13.0 8.5 0.60 0.0
October 4
 7.5 3.5 0.60 0.0
October 5
 11.5 2.0 0.00 0.0
October 6
 10.0 5.0 0.18 0.0
October 7
 9.0 -1.0 0.00 0.0
October 8
 18.5 2.0 0.20 0.0
October 9
 19.5 12.0 0.00 0.0
October 10
 19.0 9.0 0.26 0.0
October 11
 16.0 8.0 0.00 0.0
October 12
 14.0 3.5 0.20 0.0
October 13
 21.5 8.0 2.55 0.0
October 14
 8.0 3.0 0.18 0.0
October 15
 13.0 3.0 0.00 0.0
October 16
 23.0 6.0 0.00 0.0
October 17
 19.0 12.0 0.84 0.0
October 18
 8.5 6.0 0.04 0.0
October 19
 8.0 -2.5 0.00 0.0
October 20
 15.0 3.0 0.20 0.0
October 21
 13.5 4.0 0.00 0.0
October 22
 14.5 7.5 0.20 0.0
October 23
 8.5 6.0 1.64 0.0
October 24
 7.5 4.5 0.00 0.0
October 25
 10.0 0.0 0.00 0.0
October 26
 15.0 4.0 0.00 0.0
October 27
 7.0 2.5 0.00 0.0
October 28
 13.5 -2.0 0.00 0.0
October 29
 15.0 3.5 0.00 0.0
October 30
 17.5 3.5 0.00 0.0
October 31
 18.5 7.5 0.06 0.0
November 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
November 1
 17.0 5.5 0.00 0.0
November 2
 22.5 9.0 1.05 0.0
November 3
 10.0 3.5 0.15 0.0
November 4
 8.5 3.0 0.00 0.0
November 5
 16.0 2.0 0.00 0.0
November 6
 9.5 5.0 0.00 0.0
November 7
 5.0 0.0 0.00 0.0
November 8
 4.0 -3.5 0.00 0.0
November 9
 19.0 1.5 0.00 0.0
November 10
 13.0 5.0 0.24 0.0
November 11
 1.0 -5.0 0.00 0.0
November 12
 7.5 -5.0 0.22 0.0
November 13
 12.5 3.0 0.00 0.0
November 14
 13.5 6.0 0.20 0.0
November 15
 5.0 1.0 0.00 0.0
November 16
 1.0 -1.0 0.00 0.0
November 17
 2.0 -3.0 0.20 2.0
November 18
 6.0 -2.0 0.18 0.0
November 19
 14.0 2.0 0.00 0.0
November 20
 16.5 4.0 0.16 0.0
November 21
 10.0 5.5 0.00 0.0
November 22
 17.0 6.0 0.00 0.0
November 23
 15.0 12.0 0.00 0.0
November 24
 18.0 7.0 0.00 0.0
November 25
 8.0 5.0 0.42 0.0
November 26
 14.0 1.0 3.22 0.0
November 27
 9.5 5.5 0.12 0.0
November 28
 5.0 2.0 0.00 0.0
November 29
 2.0 -1.0 0.42 4.2
November 30
 -1.5 -5.0 0.00 0.0
December 1999 Cornwall Weather
Day High (°C) Low (°C) Precip. (cm) Snow (cm)
December 1
 -2.0 -10.0 0.00 0.0
December 2
 2.5 -7.0 0.00 0.0
December 3
 8.0 -1.0 1.72 0.0
December 4
 9.5 3.0 0.00 0.0
December 5
 17.0 5.0 0.20 0.0
December 6
 11.5 5.5 0.49 0.0
December 7
 2.5 -1.0 0.00 0.0
December 8
 3.5 -2.0 0.00 0.0
December 9
 8.5 1.0 0.00 0.0
December 10
 6.0 -0.5 1.67 1.2
December 11
 -1.0 -3.0 0.12 1.2
December 12
 -1.0 -3.0 0.00 0.0
December 13
 1.0 -4.0 0.00 0.0
December 14
 2.0 -2.0 1.00 10.0
December 15
 7.5 -1.0 0.30 0.0
December 16
 5.0 2.0 0.10 0.0
December 17
 2.0 -1.0 0.00 0.0
December 18
 -3.0 -11.0 0.00 0.0
December 19
 -2.0 -11.5 0.00 0.0
December 20
 7.0 -7.5 1.74 0.0
December 21
 1.0 -2.0 0.00 0.0
December 22
 -1.0 -7.0 0.00 0.0
December 23
 -4.0 -6.0 0.43 4.3
December 24
 -9.5 -15.5 0.00 0.0
December 25
 -2.0 -17.0 0.00 0.0
December 26
 0.0 -10.0 0.10 1.0
December 27
 -11.0 -13.5 0.00 0.0
December 28
 -5.0 -19.0 0.16 1.6
December 29
 4.0 -16.0 0.40 4.0
December 30
 2.0 -11.0 0.00 0.0
December 31
 -6.0 -19.0 0.00 0.0
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