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   STATISTICS from CTO Weather Centre - April, 2025
   MONTHLY SUMMARY: MEANS AND TOTALS:

   Reading

Mean   

Normal   

RecHi   

YY

RecLo   

YY

   High Temp

 2021 2018

   Low Temp

 2023 2003

   Mean Temp

 2021 2018

   Dew Point

 2024 2017

   Relative Humidity

 62 % 54 % 62 % 2018 22 % 2017

   Barometric Pressure

 2013 2020

   Winds

 2023 2002

   - from

 SSE   W   WNW     N    
 

   Total Reading   

Total   

Normal   

RecMost   

YY

RecLeast   

YY
   Rain 2018 2012
   Snow 2016 2016
   - Water Equivalent 2016 2012
   Precipitation 2018 2012

   Sunshine

 135  h 95  h 375  h 2016 0  h 2002
 

   MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS:

   Reading

Highest   

DD

Lowest   

DD

RecHi   

YY-DD

RecLo   

YY-DD

   High Temp

 19 08 2002-17 2016-03

   Low Temp

 25 09 2002-17 2004-05

   Humidex

   25         2023-13      

   Wind Chill

         02         2018-05

   Dew Point

 19 02 2024-03 2019-29

   Relative Humidity

 99 % 03 19 % 17 100 % 2024-05 1 % 2017-06

   Barometric Pressure

 02 15 2023-30 2020-17

   Winds

 07       2012-12      

   - from

 E           E          
 

   Daily Total

Most   

DD

RecMost   

YY-DD
   Rain 24 2025-24
   Snow 08 2016-06
   - Water Equivalent 08 2016-06
   Precipitation 24 2025-24

   Sunshine

 13:40  h 17 18:05  h 2022-28
 

   Daily Mean

Highest   

DD

Lowest   

DD

RecHi   

YY-DD

RecLo   

YY-DD

   Temperature

 25 08 2002-17 2016-03

   Dew Point

 19 09 2024-12 2013-11

   Relative Humidity

 88 % 11 44 % 17 91 % 2018-17 1 % 2017-06

   Barometric Pressure

 02 15 2023-30 2012-19

   Winds

 02 08 2024-03 2002-01

   - from

 E     W     NNW     N    
 

   EVENTS THIS MONTH (15):

  
   
Nunavut Created - April 1 @ 01:00
Today marks 26 years since Nunavut separated from the Northwest Territories, in 1999.
   
Falklands War Begins - April 2 @ 01:00
On this day in 1982, the Falklands War began, pitting Great Britain against Argentina for control of the Islands. Argentina surrendered 74 days later.
   
First Quarter - April 4 @ 13:14
A waxing half-Moon is near the meridian (halfway across the sky) as the Sun sets.
   
Battle of Vimy Ridge - April 9 @ 01:00
On this day in 1917, during World War I, the Battle of Vimy Ridge began, with four Canadian divisions storming the lines versus three German divisions. The Canadians were ultimately victorious, and a beautiful memorial now decorates the site.
   
Trans-Canada Air Lines Formed - April 10 @ 01:00
On this day, back in 1937 (now 88 years ago), Trans-Canada Air Lines was formed. It eventually went on to be renamed "Air Canada" in 1965, and to swallow Canadian Airlines International (formerly Canada Pacific Airlines, or CP Air), which itself had absorbed WardAir a few years before (1989) in 2001.
   
Yuri Gagarin in Orbit - April 12 @ 01:00
On this day in 1961, Soviet Cosmonaut Yuri Gagarin became the first human to orbit the earth, aboard Vostok 1. Following the flight, he was made a Hero of the Soviet Union. From that point on a national treasure, he was forbidden further space flights. He later died, in 1968, in a plane crash. Since the year 2000, an annual event, Yuri's Night, celebrates milestones in space exploration. This date was declared the International Day of Human Space Flight by the UN.
   
First Space Shuttle Launch - April 12 @ 01:00
On this day in 1981, Space Shuttle Columbia was launched from Cape Canaveral, Florida, on an orbital flight commanded by John Young, a Project Apollo veteran, and Bob Crippen. Columbia went on to make many more flights before breaking up during re-entry in 2003.
   
Full Moon - April 12 @ 11:22
The Moon is most-opposite the Sun in the sky, rising as the sun sets.
   
1906 San Francisco Earthquake - April 18 @ 01:00
Northern California experienced a massive (magnitude 7.9) earthquake, on this day in 1906, which ruptured gas lines, causing widespread fires.
   
Last Quarter - April 20 @ 12:35
A waning half-Moon is near the meridian (halfway across the sky) as the Sun rises.
   
Second Battle of Ypres - April 22 @ 01:00
In this World War I battle, begun on this day in 1915, Canadians were in the forefront. Over the course of the battle, which lasted until May 25, Canadians were subject to violent bombardment and poison-gas attacks, but held the line and eventually emerged victorious.
   
Earth Day - April 22 @ 01:00
The first Earth Day was celebrated back in 1970.
   
HST Launched - April 24 @ 01:00
On this day 35 years ago (1990), the Hubble Space Telescope was launched. The first large space telescope, the Hubble initially had severe focusing problems; but a later servicing mission repaired Hubble's focus with a special package of corrective lenses. The Hubble went on to make over 30 years of discoveries as the premiere optical space telescope, before being supplanted by the James Webb Space Telescope, but remains in service, with investigations into extending its lifespan by up to 20 years.
   
Chernobyl Disaster - April 26 @ 01:00
On this day in 1986, the No. 4 reactor of the Chernobyle Nuclear Power Plant exploded, releasing radiation in into the environment. A years-long effort to stabilize the reactor followed, and today it is enclosed in a giant metal 'sarcophagus'. It has repeatedly come into danger during the Russo-Ukraine war.
   
New Moon - April 27 @ 06:31
The Moon is nearest the Sun in the sky and cannot be seen from the ground.
  


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                        54%                06:43       19:31       12:50 h    Waxing Crescent    W @    
   2                        62%                06:41       19:33       03:50 h    Waxing Crescent    E @    
   3                        70%                06:39       19:34       02:55 h    Waxing Crescent    WNW @    
   4                        53%                06:37       19:35       10:40 h    Waxing Crescent    W @    
   5                        77%                06:35       19:36       00:15 h    First Quarter    W @    
   6                        64%                06:33       19:38       02:45 h    Waxing Gibbous    W @    
   7                        58%                06:32       19:39       08:30 h    Waxing Gibbous    E @    
   8                        76%                06:30       19:40       00:45 h    Waxing Gibbous    W @    
   9                        56%                06:28       19:42       12:55 h    Waxing Gibbous    E @    
   10                        62%                06:26       19:43       06:05 h    Waxing Gibbous    W @    
   11                        88%                06:24       19:44       00:25 h    Waxing Gibbous    W @    
   12                        65%                06:22       19:45       04:45 h    Full    W @    
   13                        56%                06:21       19:47       12:00 h    Waning Gibbous    W @    
   14                        50%                06:19       19:48       04:00 h    Waning Gibbous    E @    
   15                        72%                06:17       19:49       03:30 h    Waning Gibbous    E @    
   16                        66%                06:15       19:51       01:15 h    Waning Gibbous    WNW @    
   17                        44%                06:14       19:52       13:40 h    Waning Gibbous    W @    
   18                        57%                06:12       19:53       02:15 h    Waning Gibbous    E @    
   19                        81%                06:10       19:54       00:15 h    Waning Gibbous    W @    
   20                        46%                06:08       19:56       11:55 h    Last Quarter    W @    
   21                        60%                06:07       19:57       02:10 h    Waning Crescent    W @    
   22                        74%                06:05       19:58       00:30 h    Waning Crescent    WNW @    
   23                        58%                06:03       20:00       11:35 h    Waning Crescent    W @    
   24                        60%                06:02       20:01       05:30 h    Waning Crescent    W @    
   25                        52%                06:00       20:02       01:05 h    Waning Crescent    E @    
   26                        60%                05:59       20:03       00:00 h    Waning Crescent    NE @    
   27                        n/a%                05:57       20:05       n/a h    New    n/a @    
   28                        n/a%                05:55       20:06       n/a h    Waxing Crescent    n/a @    
   29                        n/a%                05:54       20:07       n/a h    Waxing Crescent    n/a @    
   30                        n/a%                05:52       20:09       n/a h    Waxing Crescent    n/a @    
   April                    62%                    135 h      SSE @    
   Normals                    54%    -7.7°C    1016.3 mb            95 h      W @ 2 km/h   
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