STATISTICS from CTO Weather Centre - September, 2025
MONTHLY SUMMARY: MEANS AND TOTALS:
Reading
Mean
Normal
RecHi
YY
RecLo
YY
High Temp
2023
2019
Low Temp
2018
2019
Mean Temp
2023
2019
Dew Point
2015
2019
Relative Humidity
60
%
64
%
74
%
2018
58
%
2023
Barometric Pressure
2018
2017
Winds
2023
2002
- from
NNE
ENE
WNW
N
Total Reading
Total
Normal
RecMost
YY
RecLeast
YY
Rain
2021
2019
Snow
2015
2015
- Water Equivalent
2015
2015
Precipitation
2021
2019
Sunshine
50
h
105
h
319
h
2017
0
h
2002
MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS:
Reading
Highest
DD
Lowest
DD
RecHi
YY-DD
RecLo
YY-DD
High Temp
01
07
2023-05
2006-29
Low Temp
02
05
2023-06
2019-03
Humidex
01
2023-05
Wind Chill
n/a
n/a-n/a
Dew Point
04
07
2023-05
2019-27
Relative Humidity
93
%
05
31
%
01
98
%
2024-07
0
%
2019-27
Barometric Pressure
01
04
2020-21
2022-25
Winds
05
2020-02
- from
SW
SW
Daily Total
Most
DD
RecMost
YY-DD
Rain
04
2021-23
Snow
01
2002-01
- Water Equivalent
01
2002-01
Precipitation
04
2021-23
Sunshine
10:15
h
03
15:48
h
2014-24
Daily Mean
Highest
DD
Lowest
DD
RecHi
YY-DD
RecLo
YY-DD
Temperature
02
07
2023-05
2006-29
Dew Point
04
07
2023-05
2019-27
Relative Humidity
68
%
04
55
%
03
89
%
2022-20
12
%
2016-27
Barometric Pressure
01
04
2020-20
2017-27
Winds
05
01
2023-01
2002-01
- from
W
E
NNW
N
EVENTS THIS MONTH (18):
Alberta and Saskatchewan Join Confederation - September 1 @ 01:00
Today marks 120 years since Alberta and Saskatchewan joined the Canadian Confederation in 1905.
World War II began - September 1 @ 01:00
The global conflagration known as World War II began on this date, in 1939. It began with the German invasion of Poland, and ended six years later with the defeat of Germany and the nuclear bombing of Japan. Canada played a signficant role in the war, first protecting trans-Atlantic shipping, then by contributing great numbers of aircraft and crew, and finally by fielding a large army in Europe, playing a major role in the liberation of the Netherlands.
World War II ended - September 2 @ 01:00
World War II officially ended on this day in 1945, with the signing of formal surrender documents by the Japanese, aboard the US battleship Missouri, in Tokyo Bay. Japan's final surrender was precipitated by the nuclear bombings of Hiroshima and Nagasaki a few weeks earlier.
Allied Invasion of Italy - September 3 @ 01:00
On this day in 1943, allied forces invaded southern Italy and began fighting their way north.
Full Moon - September 7 @ 06:08
The Moon is most-opposite the Sun in the sky, rising as the sun sets.
"Hurroncane" - September 11 @ 01:00
On this day in 1996 (29 years ago), a subtropical cyclone formed in Lake Huron, reaching Tropical Storm intensity. It was the only recorded instance of a warm-core cyclone forming in the Great Lakes region.
Last Quarter - September 13 @ 22:32
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
Hurricane Fiona - September 14 @ 01:00
On this day in 2022, Hurricane Fiona formed, going on to strike Nova Scotia, Quebec, and Newfoundland and Labrador.
Hurricane Lee - September 17 @ 01:00
On this day in 2023, Hurricane Lee formed, going on to strike Nova Scotia, New Brunswick and Prince Edward Island.
Dunrobin Tornado - September 21 @ 01:00
On this day in 2018, a tornado touched down in Dunrobin, Ontario, just outside Ottawa. Other tornadoes in the region caused a major power outage, including through parts of the downtown area.
New Moon - September 21 @ 07:54
The Moon is nearest the Sun in the sky and cannot be seen from the ground.
Hurricane Fiona - September 24 @ 01:00
On this day in 2022, Hurricane Fiona made landfall in Nova Scotia, causing extensive damage throughout the Maritimes. Damages were close to a billion dollars.
Alouette I launched. - September 29 @ 01:00
Canada's first space satellite, Alouette 1, was launched in 1962 and remains in orbit, though no longer functional.
Hurricane Juan - September 29 @ 01:00
On this day in 2003, hurricane Juan made landfall in Nova Scotia, as a Category-Two storm. The hurricane's arrival coincided with a high tide, and the resultant storm surge caused massive damage and significant coastal erosion.
First Quarter - September 29 @ 11:53
A waxing half-Moon is near the meridian (halfway across the sky) as the Sun sets.
Total Lunar Eclipse - September 7 @ 11:28
A total lunar eclipse will be visible from Asia, Africa, Europe, Australia, and the polar regions.
Partial Solar Eclipse - September 21 @ 13:29
A partial solar eclipse will be visible from New Zealand and the South polar region.
Autumnal (Fall) Equinox - September 22 @ 10:19
Summer ends; Autumn begins (N. Hemisphere). Winter ends; Spring begins (S. Hemisphere). Day and night are equal worldwide.
Daily Temperatures This Month:
Daily Precipitation This Month:
This Month:
Day
High
Low
Mean
MxHx
MnWC
AvRH
AvDP
AvBP
Prec
Sunrise
Sunset
Sun
Moon
Winds
1
58%
06:25
19:40
10:10 h
Waxing Gibbous
E @
2
56%
06:26
19:38
08:55 h
Waxing Gibbous
W @
3
55%
06:27
19:36
10:15 h
Waxing Gibbous
E @
4
68%
06:28
19:34
02:00 h
Waxing Gibbous
E @
5
67%
06:30
19:33
06:35 h
Waxing Gibbous
W @
6
58%
06:31
19:31
04:15 h
Full
E @
7
58%
06:32
19:29
07:50 h
Waning Gibbous
E @
8
63%
06:33
19:27
10:05 h
Waning Gibbous
W @
9
n/a%
06:34
19:25
n/a h
Waning Gibbous
n/a @
10
n/a%
06:36
19:23
n/a h
Waning Gibbous
n/a @
11
n/a%
06:37
19:21
n/a h
Waning Gibbous
n/a @
12
n/a%
06:38
19:19
n/a h
Waning Gibbous
n/a @
13
n/a%
06:39
19:17
n/a h
Waning Gibbous
n/a @
14
n/a%
06:40
19:15
n/a h
Last Quarter
n/a @
15
n/a%
06:42
19:13
n/a h
Waning Crescent
n/a @
16
n/a%
06:43
19:11
n/a h
Waning Crescent
n/a @
17
n/a%
06:44
19:10
n/a h
Waning Crescent
n/a @
18
n/a%
06:45
19:08
n/a h
Waning Crescent
n/a @
19
n/a%
06:47
19:06
n/a h
Waning Crescent
n/a @
20
n/a%
06:48
19:04
n/a h
Waning Crescent
n/a @
21
n/a%
06:49
19:02
n/a h
New
n/a @
22
n/a%
06:50
19:00
n/a h
Waxing Crescent
n/a @
23
n/a%
06:51
18:58
n/a h
Waxing Crescent
n/a @
24
n/a%
06:53
18:56
n/a h
Waxing Crescent
n/a @
25
n/a%
06:54
18:54
n/a h
Waxing Crescent
n/a @
26
n/a%
06:55
18:52
n/a h
Waxing Crescent
n/a @
27
n/a%
06:56
18:50
n/a h
Waxing Crescent
n/a @
28
n/a%
06:58
18:48
n/a h
First Quarter
n/a @
29
n/a%
06:59
18:46
n/a h
Waxing Gibbous
n/a @
30
n/a%
07:00
18:45
n/a h
Waxing Gibbous
n/a @
September
60%
50 h
NNE @
Normals
64%
10.8°C
1017.1 mb
105 h
ENE @ 1 km/h
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