STATISTICS from CTO Weather Centre -
December, 2026
MONTHLY SUMMARY: MEANS AND TOTALS:
Reading
Mean
Normal
RecHi
Year
RecLo
Year
High Temp
2015
2007
Low Temp
2015
2007
Mean Temp
2015
2007
Dew Point
2015
2013
Relative Humidity
63
%
78
%
2018
23
%
2013
Barometric Pressure
2023
2025
Winds
2023
2001
- from
E
WNW
N
Monthly Total
Total
Normal
RecMost
YY
RecLeast
YY
Rain
2020
2016
Snow
2022
2022
- Water Equivalent mm
2022
2020
Precipitation
2022
2016
Sunshine
105
h
199
h
2016
0
h
2001
MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS:
Reading
Max
DD
Min
DD
RecHi
YY-DD
RecLo
YY-DD
High Temperature
2019-23
2004-20
Low Temp
2015-11
2004-20
Humidex
2019-23
Wind Chill
2017-28
Dew Point
2019-23
2020-21
Relative Humidity
100
%
2022-30
0
%
2020-21
Barometric Pressure
2022-14
2022-23
Winds
2015-24
- from
S
Daily Total
Most
DD
RecMost
YY-DD
Rain
2020-25
Snow
2015-29
Snow Equiv mm
2015-29
Precipitation
2020-25
Sunshine
15:55
h
2016-15
Daily Mean
Max
DD
Min
DD
RecHi
YY-DD
RecLo
YY-DD
Temperature
2015-24
2004-20
Dew Point
2019-23
2020-21
Relative Humidity
100
%
2022-31
20
%
2013-01
Barometric Pressure
2022-14
2022-24
Winds
2022-23
2001-01
- from
WNW
N
EVENTS NEXT MONTH (12):
Last Quarter - December 1 @ 01:08
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
Pearl Harbour - December 7 @ 00:00
On this day in 1941, Japan achieved complete surprise in its attack on Pearl Harbour, sinking most of the US Pacific Fleet stationed at Hawaii. Fortunately, the four American aircraft carriers were out to sea on that Sunday morning, and survived to wreak havoc on the Japanese in later battles. The United States declared war the following day, eventually winning the Pacific War in 1945.
New Moon - December 8 @ 19:51
The Moon is nearest the Sun in the sky and cannot be seen from the ground.
First Quarter - December 17 @ 00:42
A waxing half-Moon is near the meridian (halfway across the sky) as the Sun sets.
Happy Festivus! - December 23 @ 00:00
Festivus, the Festival for, as the saying goes, the rest of us.
Full Moon - December 23 @ 20:28
The Moon is most-opposite the Sun in the sky, rising as the sun sets.
Sir Isaac Newton Born - December 25 @ 00:00
On this day in 1642, Sir Isaac Newton was born. He went on to give birth to modern physics and new branches of mathematics.
Xmas Day Ice Storm - December 25 @ 00:00
The Ottawa area was hit by a massive ice storm on this day in 1986.
Launch of the JWST - December 25 @ 00:00
On Xmas Day in 2021, the James Webb Space Telescope was launched aboard an ArianeSpace Ariane 5 launch vehicle. Orbiting Earth-Sun Lagrange Point L2, and sporting vastly superior optics and electronics to Hubble's, the JWST has made revolutionary discoveries, including the existence of well-formed galaxies shortly after the Big Bang.
Indian Ocean Earthquake and Tsunami - December 26 @ 00:00
A megathrust earthquake off Sumatra, Indonesia, caused a massive tsunami throughout the Indian Ocean, on this day in 2004. In Indonesia, the hardest-hit by the giant ocean waves, up to 225,000 people died.
Last Quarter - December 30 @ 13:59
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
Winter Solstice - December 21 @ 15:50
Autumn ends; Winter begins (N. Hemisphere). Spring ends; Summer begins (S. Hemisphere). Shortest day of the year (N. Hemisphere). Longest day of the year (S. Hemisphere)
Next Month:
Day
MeanHigh
MeanLow
MeanTemp
AvRH
AvDP
AvBP
Prec
Sunrise
Sunset
Moon
Winds
1
57%
07:23
16:21
Last Quarter
ENE @
2
60%
07:24
16:21
Waning Crescent
WNW @
3
68%
07:25
16:21
Waning Crescent
ENE @
4
58%
07:26
16:20
Waning Crescent
E @
5
67%
07:27
16:20
Waning Crescent
W @
6
64%
07:28
16:20
Waning Crescent
ENE @
7
60%
07:29
16:20
Waning Crescent
ENE @
8
64%
07:30
16:20
New
ENE @
9
61%
07:31
16:20
New
E @
10
65%
07:32
16:20
New
ENE @
11
60%
07:33
16:20
New
ENE @
12
67%
07:34
16:20
New
WNW @
13
64%
07:34
16:20
New
E @
14
65%
07:35
16:20
New
ENE @
15
60%
07:36
16:20
New
ENE @
16
64%
07:37
16:21
New
ENE @
17
73%
07:37
16:21
New
W @
18
69%
07:38
16:21
New
E @
19
62%
07:39
16:22
New
WNW @
20
58%
07:39
16:22
Waxing Crescent
W @
21
69%
07:40
16:23
Waxing Crescent
E @
22
72%
07:40
16:23
Waxing Crescent
E @
23
70%
07:41
16:24
Waxing Crescent
ENE @
24
63%
07:41
16:24
Waxing Crescent
ENE @
25
57%
07:41
16:25
Waxing Crescent
WNW @
26
58%
07:42
16:26
First Quarter
E @
27
68%
07:42
16:26
Waxing Gibbous
ENE @
28
55%
07:42
16:27
Waxing Gibbous
ENE @
29
60%
07:42
16:28
Waxing Gibbous
W @
30
57%
07:43
16:29
Waxing Gibbous
ENE @
31
64%
07:43
16:30
Waxing Gibbous
WNW @
December
63%
-9.7°C
1016.4 mb
E @ 1 km/h
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