1981-2010 Normals - WINNIPEG, Manitoba
|
|
1) Monthly temperature and precipitation:
|
Max °C
|
Min °C
|
Mean °C
|
SD (mean °C)
|
Rainfall
|
Snowfall
|
Precipitation
|
Jan
|
-11.4
|
-21.5
|
-16.4
|
3.9
|
0.3
|
23.8
|
19.1
|
Feb
|
-8.3
|
-18.6
|
-13.5
|
4.1
|
3.0
|
14.0
|
14.1
|
Mar
|
-0.8
|
-10.7
|
-5.8
|
3.1
|
10.7
|
16.4
|
25.0
|
Apr
|
10.9
|
-2.0
|
4.5
|
2.7
|
20.2
|
10.3
|
30.2
|
May
|
18.4
|
4.3
|
11.4
|
2.2
|
57.8
|
2.2
|
59.8
|
Jun
|
23.1
|
10.6
|
16.9
|
1.9
|
88.9
|
0.0
|
88.9
|
Jul
|
25.7
|
13.3
|
19.6
|
1.4
|
79.4
|
0.0
|
79.4
|
Aug
|
25.3
|
12.2
|
18.7
|
1.8
|
79.2
|
0.0
|
79.2
|
Sep
|
19.1
|
6.6
|
12.9
|
1.6
|
47.4
|
0.2
|
47.6
|
Oct
|
10.6
|
-0.3
|
5.1
|
1.8
|
33.2
|
5.5
|
37.9
|
Nov
|
-0.2
|
-9.0
|
-4.6
|
3.6
|
7.4
|
21.2
|
25.1
|
Dec
|
-8.9
|
-18.1
|
-13.5
|
4.3
|
1.3
|
24.1
|
20.9
|
|
|
|
|
|
|
|
|
Year
|
|
|
|
|
|
|
|
Total
|
|
|
|
|
428.5
|
117.7
|
527.2
|
Avg
|
8.6
|
-2.8
|
2.9
|
1.1
|
|
|
|
Note: Rainfall and precipitation in millimetres (mm); snowfall in centimetres (cm).
Days with temperature....
|
≤-40°C
|
≤-30°C
|
≤-20°C
|
≤-10°C
|
<0°C
|
≥0°C
|
≥10°C
|
≥20°C
|
≥30°C
|
≥35°C
|
Jan
|
0.1
|
6.2
|
18.1
|
27.5
|
31.0
|
2.5
|
0
|
0
|
0
|
0
|
Feb
|
0.1
|
3.5
|
13.2
|
22.5
|
27.9
|
4.9
|
0
|
0
|
0
|
0
|
Mar
|
0
|
0.5
|
5.2
|
14.6
|
28.1
|
15.9
|
1.6
|
0
|
0
|
0
|
Apr
|
0
|
0
|
0.1
|
2.2
|
19.3
|
27.8
|
16.7
|
3.7
|
0.1
|
0
|
May
|
0
|
0
|
0
|
0
|
7.6
|
31.0
|
28.0
|
12.9
|
1.1
|
0
|
Jun
|
0
|
0
|
0
|
0
|
0.2
|
30.0
|
30.0
|
22.3
|
2.4
|
0.3
|
Jul
|
0
|
0
|
0
|
0
|
0
|
31.0
|
31.0
|
29.2
|
4.3
|
0.2
|
Aug
|
0
|
0
|
0
|
0
|
0
|
31.0
|
31.0
|
27.1
|
5.0
|
0.4
|
Sep
|
0
|
0
|
0
|
0
|
2.3
|
30.0
|
28.5
|
12.9
|
0.7
|
0
|
Oct
|
0
|
0
|
0
|
0.9
|
16.3
|
29.8
|
16.6
|
2.3
|
0
|
0
|
Nov
|
0
|
0.2
|
2.5
|
11.9
|
27.9
|
15.2
|
2.4
|
0
|
0
|
0
|
Dec
|
0
|
2.8
|
13.7
|
24.3
|
30.8
|
3.8
|
0
|
0
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Year
|
|
|
|
|
|
|
|
|
|
|
Total
|
0.2
|
13.2
|
52.8
|
103.9
|
191.3
|
252.9
|
185.9
|
110.4
|
13.5
|
1.0
|
Other precipitation and temperature normals:
First snowflake of the fall season (first trace cm or more snowfall after July 31): October 9 (October 8 on a leap year)
First accumulative snowfall of the fall season (first 0.2 cm or more snowfall accumulation after July 31): October 18 (October 17 on a leap year)
Date to reach 5°C for first time in a year: February 25
Date to reach 10°C for first time in a year: April 1 (March 31 on a leap year)
Date to reach 20°C for first time in a year: April 20 (April 19 on a leap year)
Date to reach 25°C for first time in a year: May 8 (May 7 on a leap year)
Date to reach 30°C for first time in a year: June 2 (June 1 on a leap year)
Maximum temperature during the year: 34.3°C
Minimum temperature during the year: -36.2°C
2) Thunderstorms:
|
T-storm days
|
Jan
|
0
|
Feb
|
0
|
Mar
|
0.1
|
Apr
|
0.8
|
May
|
2.9
|
Jun
|
6.3
|
Jul
|
6.6
|
Aug
|
6.2
|
Sep
|
2.8
|
Oct
|
0.5
|
Nov
|
0.1
|
Dec
|
0
|
|
|
Year
|
|
Total
|
26.2
|
First thunderstorm: April 27 (April 26 on a leap year)
Last thunderstorm: October 2 (October 1 on a leap year)
Thunderstorm season length: 160 days
Thunderstorm off-season length: 207 days
Last thunderstorm: October 2 (October 1 on a leap year)
Thunderstorm season length: 160 days
Thunderstorm off-season length: 207 days
3) Snow on ground (SOG) or ''snow depth'':
|
Average SOG
|
Days >0 cm
|
Days ≥5 cm
|
Days ≥15 cm
|
Days ≥30 cm
|
Days ≥50 cm
|
Jan
|
18
|
31.0
|
28.0
|
15.6
|
6.1
|
1.0
|
Feb
|
21
|
28.0
|
26.3
|
17.1
|
7.0
|
0.9
|
Mar
|
14
|
27.5
|
18.6
|
12.0
|
5.8
|
0.5
|
Apr
|
2
|
7.3
|
2.5
|
1.5
|
0.9
|
0.3
|
May
|
0
|
0.6
|
0.1
|
0
|
0
|
0
|
Jun
|
0
|
0
|
0
|
0
|
0
|
0
|
Jul
|
0
|
0
|
0
|
0
|
0
|
0
|
Aug
|
0
|
0
|
0
|
0
|
0
|
0
|
Sep
|
0
|
0
|
0
|
0
|
0
|
0
|
Oct
|
0
|
2.3
|
0.4
|
0
|
0
|
0
|
Nov
|
4
|
18.2
|
8.7
|
2.9
|
0.1
|
0
|
Dec
|
11
|
29.7
|
21.6
|
8.1
|
1.8
|
0.1
|
|
|
|
|
|
|
|
Year
|
|
|
|
|
|
|
Total
|
|
144.7
|
106.2
|
57.2
|
21.7
|
2.8
|
Avg
|
6
|
|
|
|
|
|
Date winter snow pack reaches trace cm: March 26 (March 25 on a leap year)
Date winter snow pack reaches 0 cm: April 3 (April 2 on a leap year)
Duration of winter snow pack (including trace cm as winter snow pack): 133.1 days
Duration of winter snow pack (excluding trace cm as winter snow pack): 118.6 days
Date winter snow pack reaches 0 cm: April 3 (April 2 on a leap year)
Duration of winter snow pack (including trace cm as winter snow pack): 133.1 days
Duration of winter snow pack (excluding trace cm as winter snow pack): 118.6 days
4) Dewpoint Temperature (abbreviation: DP)
a) Average hourly dewpoint observation per month and days with dewpoint temperature....
|
Average DP
|
≤-40°C
|
≤-30°C
|
≤-20°C
|
≤-10°C
|
<0°C
|
≥0°C
|
≥10°C
|
≥15°C
|
≥20°C
|
Jan
|
-19.4
|
0.7
|
10.2
|
20.7
|
28.4
|
31.0
|
0.5
|
0
|
0
|
0
|
Feb
|
-16.4
|
0.3
|
7.0
|
15.7
|
23.4
|
27.9
|
1.9
|
0
|
0
|
0
|
Mar
|
-9.2
|
0.1
|
1.8
|
7.7
|
17.7
|
29.9
|
8.1
|
0
|
0
|
0
|
Apr
|
-2.6
|
0
|
0
|
0.3
|
6.4
|
26.5
|
17.6
|
1.1
|
0
|
0
|
May
|
3.5
|
0
|
0
|
0
|
1.2
|
15.6
|
27.6
|
9.7
|
2.2
|
0
|
Jun
|
10.7
|
0
|
0
|
0
|
0
|
1.7
|
30.0
|
24.4
|
12.2
|
1.8
|
Jul
|
14.2
|
0
|
0
|
0
|
0
|
0
|
31.0
|
30.7
|
22.2
|
5.4
|
Aug
|
12.8
|
0
|
0
|
0
|
0
|
0.3
|
31.0
|
29.6
|
17.6
|
2.8
|
Sep
|
7.5
|
0
|
0
|
0
|
0
|
5.1
|
29.7
|
16.5
|
5.5
|
0.4
|
Oct
|
0.6
|
0
|
0
|
0
|
2.1
|
21.4
|
24.2
|
3.1
|
0.4
|
0
|
Nov
|
-7.4
|
0
|
0.3
|
3.7
|
14.5
|
29.1
|
8.0
|
0.1
|
0
|
0
|
Dec
|
-16.1
|
0.2
|
6.3
|
15.6
|
26.2
|
30.9
|
1.0
|
0
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Year
|
-1.7
|
|
|
|
|
|
|
|
|
|
Total
|
|
1.2
|
25.6
|
63.7
|
120.0
|
219.5
|
210.4
|
115.1
|
60.1
|
10.5
|
b) Average dewpoint temperature at specific times of the day...
|
Midnight
|
3 am
|
6 am
|
9 am
|
Noon
|
3 pm
|
6 pm
|
9 pm
|
Jan
|
-19.7
|
-20.2
|
-20.5
|
-20.6
|
-18.7
|
-17.7
|
-18.6
|
-19.2
|
Feb
|
-17.1
|
-17.6
|
-18.1
|
-17.7
|
-15.5
|
-14.3
|
-15.0
|
-16.1
|
Mar
|
-9.7
|
-10.4
|
-10.9
|
-10.0
|
-8.4
|
-7.5
|
-7.7
|
-8.7
|
Apr
|
-2.8
|
-3.3
|
-3.7
|
-2.6
|
-2.1
|
-2.0
|
-2.1
|
-2.1
|
May
|
3.1
|
2.7
|
2.4
|
4.1
|
4.1
|
3.9
|
3.7
|
3.7
|
Jun
|
10.5
|
9.9
|
9.6
|
11.3
|
11.4
|
11.2
|
10.9
|
11.1
|
Jul
|
14.0
|
13.2
|
12.7
|
14.6
|
14.7
|
14.5
|
14.5
|
14.9
|
Aug
|
12.6
|
12.0
|
11.6
|
13.4
|
13.5
|
13.0
|
12.8
|
13.0
|
Sep
|
7.4
|
6.9
|
6.5
|
7.7
|
8.4
|
8.0
|
7.8
|
7.6
|
Oct
|
0.4
|
-0.1
|
-0.3
|
0.3
|
1.5
|
1.4
|
1.2
|
0.7
|
Nov
|
-7.6
|
-7.9
|
-8.3
|
-7.8
|
-6.6
|
-6.3
|
-6.9
|
-7.5
|
Dec
|
-16.1
|
-16.6
|
-17.0
|
-17.1
|
-15.5
|
-14.9
|
-15.7
|
-16.1
|
|
|
|
|
|
|
|
|
|
Year
|
-2.1
|
-2.5
|
-2.9
|
-2.0
|
-1.0
|
-0.8
|
-1.2
|
-1.5
|
5) Frost & growing season:
First freeze of the fall season (dip to 0.0°C or lower for first time after July 15): September 23 (September 22 on a leap year)
First hard freeze of the fall season (reach -2.0°C or lower for first time): October 1 (September 30 on a leap year)
Last spring freeze: May 24 (May 23 on a leap year)
Last spring hard freeze: May 14 (May 13 on a leap year)
Length of growing season: 120 days
Length of growing season adjusted (# of days between hard freezes): to come