Ottawa Airport (YOW):

THIS MONTH

Times in Eastern Daylight Time (EDT = GMT-4)
<-CTO Ottawa Airport <-CTO Home <-Units of Measure <-Browse logs, etc. <-Diagnostic Page
Current Weather Forecasts Warnings Temperatures BP+RH Winds Precip
Records Normals
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   STATISTICS from Ottawa Airport (YOW) - October, 2025
   MONTHLY SUMMARY: MEANS AND TOTALS:

   Reading

Mean   

Normal   

RecHi   

YY

RecLo   

YY

  
   High Temp 17.1 °C 0.0 °C 19.6 °C 2017 10.8 °C 2018  
   Low Temp 5.1 °C 0.0 °C 7.1 °C 2017 +1.0 °C 2022  
   Mean Temp 11.1 °C 0.0 °C 13.4 °C 2017 7.0 °C 2018  
   Dew Point +4.7 °C     8.8 °C 2017 +2.8 °C 2018  
   Relative Humidity 68 %     81 % 2021 69 % 2022  
   Barometric Pressure 1019.7  mb     1018.1  mb 2024 1014.3  mb 2021  
   Visibility 22  km     21  km 2024 21  km 2024  
   Winds 13  km/h     15  km/h 2024 7  km/h 2022  
   - from S       NE (049)     WSW (241)      
 

   Oct Precipitation

Total   

Normal   

RecHi   

YY

RecLo   

YY

  
   Snowfall 0.0  cm 0.0  cm 0.0  cm 2017 0.0  cm 2017  
   - Water Equiv. 0.0  mm 0.0  mm 0.0  mm 2017 0.0  mm 2017  
   Rain 93.5  mm 0.0  mm 175.1  mm 2019 0.0  mm 2018  
   Total Precipitation 93.5  mm 0.0  mm 175.1  mm 2019 0.0  mm 2018  
 

   MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS:

   Reading

Max   

DD

Min   

DD

RecHi   

YY-DD

RecLo   

YY-DD

  

   High Temp

 29.7 °C 05 7.1 °C 26 29.7 °C 2025-05 +0.2 °C 2017-17  

   Low Temp

 13.0 °C 06 -1.4 °C 10 21.5 °C 2017-08 -6.9 °C 2020-31  

   Humidex

 33   05       36   2018-09        

   Wind Chill

       -3   10       -9   2020-30  

   Dew Point

 18.4 °C 07 -3.8 °C 09 20.4 °C 2018-09 -16.0 °C 2024-28  

   Relative Humidity

 99 % 20 28 % 01 100 % 2017-03 0 % n/a-n/a  

   Barometric Pressure

 1036.0  mb 09 1000.0  mb 19 1038.0  mb 2022-28 0.0  mb n/a-n/a  

   Winds

 40  km/h 20       40  km/h 2020-10        

   - from

 WNW           SW            

   Wind Gust

 n/a  km/h n/a-n/a       66  km/h 2017-08        
 

   Daily Mean

Max   

DD

Min   

DD

RecHi   

YY-DD

RecLo   

YY-DD

  
   Temperature 20.9 °C 06 +3.4 °C 26 22.8 °C 2017-08 -2.0 °C 2020-30  
   Dew Point 13.8 °C 07 -2.4 °C 09 18.0 °C 2017-08 -11.2 °C 2024-28  
   Relative Humidity 84 % 07 52 % 01 100 % 2017-07 42 % 2024-28  
   Barometric Pressure 1033.0  mb 09 1003.0  mb 22 1035.5  mb 2022-28 979.0  mb 2017-30  
   Visibility 24  km 01 13  km 07 24  km 2024-08 12  km 2024-22  
   Winds 22  km/h 20 5  km/h 05 31  km/h 2017-30 0  km/h 2017-11  
   - from SSW (212)           SE(144)            
 

   Daily Total

Max   

DD

      

Record   

YY-DD

        

   Snowfall

 0.0  cm 01       0.0  cm 2017-01        

   - Water Equiv.

 0.0  mm 01       0.0  mm 2017-01        

   Rainfall

 0.0  mm 01       57.2  mm 2019-31        

   Total Precipitation

 0.0  mm 01       57.2  mm 2019-31        
 

Daily Temperatures This Month:
 

Precipitation This Month:
 

This Month:
   Day    High    Low    Mean    MxHx    MnWC    MeRH    MeDP    MeBP    Snow    (RnEqu.)    Rain    Precip
   1    17.8°    +4.1°    11.0°    n/a    n/a    52%    +0.6°    1028.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   2    18.6°    +2.4°    10.5°    n/a    n/a    56%    +1.8°    1030.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   3    25.4°    +4.3°    14.9°    24    n/a    58%    5.8°    1023.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   4    27.4°    10.4°    18.9°    30    n/a    65%    11.6°    1021.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   5    29.9°    13.6°    21.8°    33    n/a    60%    7.0°    1022.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   6    29.3°    12.8°    21.1°    31    n/a    60%    12.4°    1019.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   7    19.1°    11.0°    15.1°    n/a    n/a    84%    13.8°    1013.5 mb    0.0 cm    (0.0 mm)    58.6 mm    58.6 mm
   8    14.2°    +3.4°    8.8°    n/a    n/a    74%    +4.4°    1022.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   9    11.4°    +0.4°    5.9°    n/a    n/a    55%    -2.4°    1033.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   10    15.6°    -2.3°    6.7°    n/a    -3    64%    -0.6°    1027.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   11    17.7°    6.5°    12.1°    n/a    n/a    70%    +4.8°    1022.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   12    19.8°    5.6°    12.7°    n/a    n/a    65%    6.0°    1024.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   13    15.9°    6.8°    11.4°    n/a    n/a    68%    5.8°    1024.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   14    19.4°    9.6°    14.5°    n/a    n/a    71%    7.0°    1021.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   15    13.8°    +3.6°    8.7°    n/a    n/a    52%    -0.3°    1021.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   16    13.3°    +0.6°    7.0°    n/a    n/a    58%    -1.3°    1019.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   17    12.1°    -0.7°    5.7°    n/a    n/a    68%    +0.2°    1017.5 mb    0.0 cm    (0.0 mm)    0.3 mm    0.3 mm
   18    17.5°    7.8°    12.7°    n/a    n/a    70%    6.2°    1013.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   19    26.1°    7.6°    16.9°    27    n/a    61%    8.6°    1005.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   20    18.3°    9.0°    13.7°    22    n/a    80%    10.6°    1004.5 mb    0.0 cm    (0.0 mm)    31.4 mm    31.4 mm
   21    14.4°    6.8°    10.6°    n/a    n/a    70%    5.8°    1007.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   22    11.8°    +5.0°    8.4°    n/a    n/a    82%    6.4°    1003.0 mb    0.0 cm    (0.0 mm)    2.3 mm    2.3 mm
   23    10.1°    +2.7°    6.4°    n/a    n/a    84%    +4.4°    1008.5 mb    0.0 cm    (0.0 mm)    0.9 mm    0.9 mm
   24    8.8°    +2.5°    5.7°    n/a    n/a    78%    +2.3°    1019.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   25    9.5°    -0.8°    +4.4°    n/a    n/a    74%    +0.6°    1027.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   26    7.1°    -0.4°    +3.4°    n/a    -3    76%    -0.4°    1031.5 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   27    -0.1°    -0.1°    -0.1°    n/a    -3    88%    -1.8°    1032.0 mb    0.0 cm    (0.0 mm)    0.0 mm    0.0 mm
   28    n/a°    n/a°    n/a°    n/a    n/a    n/a%    n/a°    n/a mb    n/a cm    (n/a mm)    n/a mm    n/a mm
   29    n/a°    n/a°    n/a°    n/a    n/a    n/a%    n/a°    n/a mb    n/a cm    (n/a mm)    n/a mm    n/a mm
   30    n/a°    n/a°    n/a°    n/a    n/a    n/a%    n/a°    n/a mb    n/a cm    (n/a mm)    n/a mm    n/a mm
   31    n/a°    n/a°    n/a°    n/a    n/a    n/a%    n/a°    n/a mb    n/a cm    (n/a mm)    n/a mm    n/a mm
   October    17.1°    5.1°    11.1°     33     -3    68%    +4.7°    1019.7 mb   0.0 cm   0.0 mm   93.5 mm   93.5 mm