Thu
Apr 18
Extremely stable
Fri
Apr 19
Extremely stable
Sat
Apr 20
Extremely stable
~6
l/m2
78%
Sun
Apr 21
Very stable
~28
l/m2
98%
Mon
Apr 22
Extremely stable
Tue
Apr 23
Extremely stable
Wed
Apr 24
Extremely stable
18 Apr will be cool and the weather will be very stable.
The sky will be partly cloudy:
28% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
2% convective clouds (Cumulonimbus)
The highest temperature will reach 5 degrees Celsius, while the the lowest temperature will drop to 0 degrees Celsius. The wind will be a moderate breeze, fog will form, and the mean air pressure will be 1022 mb. Relative humidity will be high.
Thursday
Weather
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
12:00
5 °C
0 °C
25 km/h 
34 km/h
1022 mb
72.1%
401 m
860 m
Apr, 18 12:00 @ Extremely stable
15:00
5 °C
-1 °C
25 km/h
33 km/h
1022 mb
68.8%
414 m
951 m
Apr, 18 15:00 @ Extremely stable
18:00
3 °C
-3 °C
26 km/h
37 km/h
1022 mb
65.4%
239 m
894 m
Apr, 18 18:00 @ Extremely stable
21:00
1 °C
-5 °C
19 km/h
41 km/h
1023 mb
72.3%
105 m
683 m
Apr, 18 21:00 @ Extremely stable
19 Apr will be cool and the weather will be very stable.
The sky will be partly cloudy:
41% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
1% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
2% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 6 degrees Celsius, while the the lowest temperature will drop to 0 degrees Celsius. The wind will be a moderate breeze, and the mean air pressure will be 1021 mb. Relative humidity will be high.
Friday
Weather
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
1 °C
-5 °C
19 km/h 
43 km/h
1022 mb
77.7%
139 m
474 m
Apr, 19 00:00 @ Extremely stable
03:00
1 °C
-4 °C
22 km/h
47 km/h
1021 mb
80.6%
486 m
451 m
Apr, 19 03:00 @ Extremely stable
06:00
1 °C
-4 °C
19 km/h
43 km/h
1022 mb
83.4%
278 m
448 m
Apr, 19 06:00 @ Extremely stable
09:00
3 °C
-1 °C
17 km/h
29 km/h
1023 mb
65.4%
332 m
538 m
Apr, 19 09:00 @ Extremely stable
12:00
5 °C
2 °C
17 km/h
25 km/h
1022 mb
58.1%
496 m
510 m
Apr, 19 12:00 @ Extremely stable
15:00
5 °C
2 °C
15 km/h 
19 km/h
1022 mb
58.6%
652 m
511 m
Apr, 19 15:00 @ Extremely stable
18:00
3 °C
-1 °C
15 km/h 
15 km/h
1021 mb
69.3%
1,169 m
336 m
Apr, 19 18:00 @ Extremely stable
21:00
1 °C
-2 °C
9 km/h 
13 km/h
1022 mb
82.8%
2,050 m
95 m
Apr, 19 21:00 @ Extremely stable
20 Apr will be cool and the weather will be very stable.
There is a 78% probability of moderate rainfall.
The sky will be overcast:
99% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
75% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
42% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 8 degrees Celsius, while the the lowest temperature will drop to 1 degrees Celsius. The wind will be a moderate breeze, and the mean air pressure will be 1016 mb. Relative humidity will be very high.
Saturday
Weather
Precipitation mm probability
Showers (% of Precipitation)
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
2 °C
-2 °C
14 km/h 
31 km/h
1021 mb
84.2%
1,784 m
196 m
Apr, 20 00:00 @ Extremely stable
03:00
2 °C
-3 °C
20 km/h
43 km/h
1020 mb
84.7%
1,673 m
313 m
Apr, 20 03:00 @ Extremely stable
06:00
2 °C
-3 °C
20 km/h
43 km/h
1018 mb
86.6%
1,933 m
350 m
Apr, 20 06:00 @ Extremely stable
09:00
4 °C
-1 °C
22 km/h
40 km/h
1018 mb
81.3%
1,994 m
443 m
Apr, 20 09:00 @ Extremely stable
12:00
7 °C
4 °C
21 km/h
36 km/h
1015 mb
62.0%
1,507 m
548 m
Apr, 20 12:00 @ Extremely stable
15:00
7 °C
4 °C
17 km/h
34 km/h
1014 mb
63.2%
863 m
698 m
Apr, 20 15:00 @ Extremely stable
18:00
2.5 71%
4 °C
-1 °C
20 km/h
40 km/h
1012 mb
90.6%
1,371 m
452 m
Apr, 20 18:00 @ Extremely stable
21:00
3.7 78%
4 °C
-1 °C
19 km/h
39 km/h
1011 mb
92.8%
1,563 m
398 m
Apr, 20 21:00 @ Very stable
21 Apr will be cool and the weather will be very stable.
There is a 98% probability of heavy rainfall.
The sky will be partly cloudy:
19% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
26% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
45% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 10 degrees Celsius, while the the lowest temperature will drop to 4 degrees Celsius. The wind will be a moderate breeze, fog will form, and the mean air pressure will be 1006 mb. Relative humidity will be very high.
Sunday
Weather
Precipitation mm probability
Showers (% of Precipitation)
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
5.8 91%
4 °C
1 °C
12 km/h
31 km/h
1007 mb
98.2%
1,339 m
305 m
Apr, 21 00:00 @ Very stable
03:00
14 98%
4 °C
2 °C
12 km/h
18 km/h
1004 mb
99.1%
1,337 m
129 m
Apr, 21 03:00 @ Stable
06:00
3.6 56%
4 °C
2 °C
11 km/h
23 km/h
1003 mb
97.8%
973 m
191 m
Apr, 21 06:00 @ Very stable
09:00
4 44%
4 °C
1 °C
16 km/h 
34 km/h
1004 mb
92.3%
940 m
343 m
Apr, 21 09:00 @ Stable
12:00
7 °C
4 °C
24 km/h
35 km/h
1007 mb
70.5%
924 m
611 m
Apr, 21 12:00 @ Very stable
15:00
9 °C
6 °C
19 km/h
31 km/h
1007 mb
56.1%
1,099 m
901 m
Apr, 21 15:00 @ Very stable
18:00
8 °C
6 °C
13 km/h 
22 km/h
1007 mb
60.6%
1,191 m
784 m
Apr, 21 18:00 @ Very stable
21:00
5 °C
2 °C
15 km/h
33 km/h
1009 mb
73.4%
1,138 m
173 m
Apr, 21 21:00 @ Stable
22 Apr will be cool and the weather will be very stable.
The sky will be partly cloudy:
1% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
25% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 10 degrees Celsius, while the the lowest temperature will drop to 2 degrees Celsius. The wind will be a fresh breeze, and the mean air pressure will be 1008 mb. Relative humidity will be high.
Monday
Weather
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
4 °C
0 °C
16 km/h
36 km/h
1009 mb
78.5%
1,089 m
245 m
Apr, 22 00:00 @ Stable
03:00
3 °C
-1 °C
15 km/h
33 km/h
1009 mb
81.9%
1,079 m
206 m
Apr, 22 03:00 @ Very stable
06:00
3 °C
-2 °C
17 km/h
37 km/h
1008 mb
83.9%
1,148 m
203 m
Apr, 22 06:00 @ Very stable
09:00
5 °C
1 °C
30 km/h
58 km/h
1007 mb
73.4%
1,234 m
497 m
Apr, 22 09:00 @ Very stable
12:00
9 °C
6 °C
29 km/h
53 km/h
1006 mb
54.8%
1,051 m
1,165 m
Apr, 22 12:00 @ Very stable
15:00
9 °C
6 °C
36 km/h
55 km/h
1006 mb
47.8%
1,045 m
1,356 m
Apr, 22 15:00 @ Very stable
18:00
6 °C
1 °C
31 km/h
50 km/h
1010 mb
45.4%
631 m
806 m
Apr, 22 18:00 @ Extremely stable
21:00
2 °C
-3 °C
17 km/h
35 km/h
1015 mb
51.5%
346 m
479 m
Apr, 22 21:00 @ Extremely stable
23 Apr will be cool and the weather will be very stable.
The sky will be partly cloudy:
23% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
21% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
The highest temperature will reach 4 degrees Celsius, while the the lowest temperature will drop to -3 degrees Celsius. The wind will be a moderate breeze, and the mean air pressure will be 1023 mb. Relative humidity will be moderate.
Tuesday
Weather
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
-1 °C
-8 °C
23 km/h
36 km/h
1019 mb
49.8%
0 m
719 m
Apr, 23 00:00 @ Extremely stable
03:00
-3 °C
-8 °C
16 km/h
31 km/h
1021 mb
48.1%
0 m
703 m
Apr, 23 03:00 @ Extremely stable
06:00
-3 °C
-8 °C
15 km/h
34 km/h
1022 mb
48.0%
0 m
984 m
Apr, 23 06:00 @ Extremely stable
09:00
-1 °C
-7 °C
24 km/h
34 km/h
1024 mb
39.8%
0 m
1,265 m
Apr, 23 09:00 @ Extremely stable
12:00
1 °C
-5 °C
26 km/h
35 km/h
1025 mb
35.0%
28 m
1,369 m
Apr, 23 12:00 @ Extremely stable
15:00
4 °C
-1 °C
19 km/h
30 km/h
1026 mb
31.9%
270 m
1,043 m
Apr, 23 15:00 @ Extremely stable
18:00
4 °C
2 °C
9 km/h
15 km/h
1026 mb
36.1%
515 m
408 m
Apr, 23 18:00 @ Extremely stable
21:00
2 °C
-2 °C
11 km/h
17 km/h
1028 mb
53.1%
626 m
87 m
Apr, 23 21:00 @ Extremely stable
24 Apr will be cool and the weather will be very stable.
The sky will be overcast:
98% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
93% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
2% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 7 degrees Celsius, while the the lowest temperature will drop to 0 degrees Celsius. The wind will be a moderate breeze, and the mean air pressure will be 1028 mb. Relative humidity will be high.
Wednesday
Weather
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
1 °C
-3 °C
14 km/h
28 km/h
1029 mb
64.3%
644 m
165 m
Apr, 24 00:00 @ Extremely stable
03:00
1 °C
-4 °C
17 km/h
32 km/h
1029 mb
71.7%
728 m
195 m
Apr, 24 03:00 @ Extremely stable
06:00
1 °C
-4 °C
22 km/h
45 km/h
1030 mb
71.6%
629 m
397 m
Apr, 24 06:00 @ Extremely stable
09:00
3 °C
-2 °C
25 km/h
47 km/h
1030 mb
61.1%
504 m
513 m
Apr, 24 09:00 @ Extremely stable
12:00
6 °C
2 °C
27 km/h
47 km/h
1029 mb
49.6%
718 m
681 m
Apr, 24 12:00 @ Extremely stable
15:00
7 °C
3 °C
29 km/h
48 km/h
1028 mb
48.4%
823 m
683 m
Apr, 24 15:00 @ Extremely stable
18:00
5 °C
0 °C
27 km/h
47 km/h
1026 mb
59.7%
809 m
547 m
Apr, 24 18:00 @ Extremely stable
21:00
3 °C
-3 °C
28 km/h
50 km/h
1026 mb
75.5%
2,566 m
502 m
Apr, 24 21:00 @ Extremely stable
25 Apr will be cool and the weather will be .
There is a 65% probability of light rainfall.
The sky will be :
314% high clouds (above 6,000 meters: Cirrus, Cirrus uncinus, Cirrostratus, Cirrocumulus)
432% middle clouds (from 2,000 to 6,000 meters: Altostratus, Altocumulus)
511% low clouds (below 2,000 meters: Cumulus, Stratocumulus, Stratus, Fractostratus)
The highest temperature will reach 7 degrees Celsius, while the the lowest temperature will drop to 2 degrees Celsius. The wind will be a fresh breeze, fog will form, and the mean air pressure will be 7125 mb. Relative humidity will be .
Thursday
Weather
Precipitation mm probability
Showers (% of Precipitation)
Temperature °C
Felt temperature °C
Temperature low | high °C
Wind speed
Wind gusts
Atmospheric pressure
Relative humidity
Isotherm 0°C
Boundary Layer
Heat index
00:00
2 °C
-4 °C
26 km/h
53 km/h
1025 mb
85.3%
2,549 m
474 m
Apr, 25 00:00 @ Extremely stable
03:00
3 °C
-3 °C
24 km/h
51 km/h
1022 mb
88.2%
2,434 m
383 m
Apr, 25 03:00 @ Extremely stable
06:00
3 °C
-3 °C
33 km/h
59 km/h
1019 mb
91.5%
2,198 m
347 m
Apr, 25 06:00 @ Stable
09:00
5 °C
1 °C
22 km/h
44 km/h
1019 mb
91.0%
2,169 m
362 m
Apr, 25 09:00 @ Stable
12:00
0.2 37%
7 °C
3 °C
22 km/h
43 km/h
1016 mb
89.7%
2,231 m
340 m
Apr, 25 12:00 @ Mostly stable
15:00
1.3 65%
6 °C
3 °C
13 km/h
26 km/h
1014 mb
96.1%
2,231 m
228 m
Apr, 25 15:00 @ Mostly stable
18:00
7 °C
5 °C
8 km/h
20 km/h
1013 mb
96.0%
2,076 m
250 m
Apr, 25 18:00 @ Stable
Alliston
02:50 
