Ottawa Airport (YOW):

THIS MONTH

Times in Eastern Daylight Time (EDT = GMT-4)

STATISTICS from Ottawa Airport (YOW) - September, 2026
MONTHLY SUMMARY: MEANS AND TOTALS:

Reading	Mean		Normal		RecHi		YY	RecLo		YY
High Temp	n/a	°C	0.0	°C	24.1	°C	2017	20.0	°C	2024
Low Temp	n/a	°C	0.0	°C	11.3	°C	2017	7.4	°C	2020
Mean Temp	n/a	°C	0.0	°C	17.7	°C	2017	14.0	°C	2020
Dew Point	n/a	°C			13.3	°C	2017	9.4	°C	2025
Relative Humidity	n/a	%			78	%	2022	69	%	2025
Barometric Pressure	n/a	mb			1021.5	mb	2018	1013.8	mb	2021
Visibility	n/a	km			21	km	2025	21	km	2025
Winds	n/a	km/h			11	km/h	2025	6	km/h	2021
- from	n/a				S (188)			SW (219)

Oct Precipitation	Total		Normal		RecHi		YY	RecLo		YY
Snowfall	n/a	cm	0.0	cm	0.0	cm	2017	0.0	cm	2017
- Water Equiv.	n/a	mm	0.0	mm	0.0	mm	2017	0.0	mm	2017
Rain	n/a	mm	0.0	mm	110.2	mm	2019	0.0	mm	2018
Total Precipitation	n/a	mm	0.0	mm	110.2	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

n/a

°C

n/a

n/a

°C

n/a

33.2

°C

2018-05

6.3

°C

2017-02

Low Temp

n/a

°C

n/a

n/a

°C

n/a

28.0

°C

2017-16

-3.0

°C

2020-21

Humidex

n/a

n/a

41

2017-24

Wind Chill

n/a

n/a

-2

2020-19

Dew Point

n/a

°C

n/a

n/a

°C

n/a

23.6

°C

2018-03

-3.6

°C

2025-20

Relative Humidity

n/a

%

n/a

n/a

%

n/a

100

%

2017-04

0

%

n/a-n/a

Barometric Pressure

n/a

mb

n/a

n/a

mb

n/a

1038.0

mb

2020-21

0.0

mb

n/a-n/a

Winds

n/a

km/h

n/a

41

km/h

2025-05

- from

n/a

SSW

Wind Gust

n/a

km/h

n/a-n/a

46

km/h

2017-04

Daily Mean

Max

DD

Min

DD

RecHi

YY-DD

RecLo

YY-DD

Temperature

n/a

°C

n/a

n/a

°C

n/a

28.0

°C

2017-16

5.6

°C

2017-02

Dew Point

n/a

°C

n/a

n/a

°C

n/a

22.0

°C

2018-03

-0.3

°C

2025-20

Relative Humidity

n/a

%

n/a

n/a

%

n/a

100

%

2017-18

48

%

2017-17

Barometric Pressure

n/a

mb

n/a

n/a

mb

n/a

1033.5

mb

2020-20

1000.0

mb

2017-05

Visibility

n/a

km

n/a

n/a

km

n/a

24

km

2025-01

12

km

2025-05

Winds

n/a

km/h

n/a

n/a

km/h

n/a

19

km/h

2024-08

0

km/h

2017-15

- from

n/a (n/a)

NNW(339)

Daily Total

Max

DD

Record

YY-DD

Snowfall

n/a

cm

n/a

0.0

cm

2017-01

- Water Equiv.

n/a

mm

n/a

0.0

mm

2017-01

Rainfall

n/a

mm

n/a

28.0

mm

2017-16

Total Precipitation

n/a

mm

n/a

28.0

mm

2017-16

Daily Temperatures This Month:

Precipitation This Month:

This Month:

Day

High

Low

Mean

MxHx

MnWC

MeRH

MeDP

MeBP

Snow

(RnEqu.)

Rain

Precip

1

18.2°

18.2°

18.2°

n/a

n/a

95%

17.3°

1017.0 mb

0.0 cm

(0.0 mm)

0.0 mm

0.0 mm

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

16

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

17

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

18

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

19

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

20

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

21

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

22

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

23

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

24

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

25

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

26

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

27

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

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

September

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