Ottawa Airport (YOW):
LAST MONTH
Times in Eastern Daylight Time (EDT = GMT-4)
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STATISTICS from Ottawa Airport (YOW) - September, 2025
MONTHLY SUMMARY: MEANS AND TOTALS: |
Reading |
Mean |
Normal |
RecHi |
YY |
RecLo |
YY |
|
High Temp |
23.0 |
°C |
0.0 |
°C |
24.1 |
°C |
2017 |
20.0 |
°C |
2024 |
|
Low Temp |
9.5 |
°C |
0.0 |
°C |
11.3 |
°C |
2017 |
7.4 |
°C |
2020 |
|
Mean Temp |
16.2 |
°C |
0.0 |
°C |
17.7 |
°C |
2017 |
14.0 |
°C |
2020 |
|
Dew Point |
9.4 |
°C |
|
|
13.3 |
°C |
2017 |
9.4 |
°C |
2025 |
|
Relative Humidity |
69 |
% |
|
|
78 |
% |
2022 |
69 |
% |
2025 |
|
Barometric Pressure |
1018.7 |
mb |
|
|
1021.5 |
mb |
2018 |
1013.8 |
mb |
2021 |
|
Visibility |
21 |
km |
|
|
21 |
km |
2025 |
21 |
km |
2025 |
|
Winds |
11 |
km/h |
|
|
11 |
km/h |
2025 |
6 |
km/h |
2021 |
|
- from |
S (188) |
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S (188) |
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SW (219) |
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Sep Precipitation |
Total |
Normal |
RecHi |
YY |
RecLo |
YY |
|
Snowfall |
0.0 |
cm |
0.0 |
cm |
0.0 |
cm |
2017 |
0.0 |
cm |
2017 |
|
- Water Equivalent |
0.0 |
mm |
0.0 |
mm |
0.0 |
mm |
2017 |
0.0 |
mm |
2017 |
|
Rain |
31.5 |
mm |
0.0 |
mm |
110.2 |
mm |
2019 |
0.0 |
mm |
2018 |
|
Total Precipitation |
31.5 |
mm |
0.0 |
mm |
110.2 |
mm |
2019 |
0.0 |
mm |
2018 |
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MONTHLY SUMMARY: SINGLE-DAY EXTREMES AND RECORDS: |
Reading |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
High Temp |
27.5 |
°C |
01 |
17.1 |
°C |
25 |
33.2 |
°C |
2018-05 |
6.3 |
°C |
2017-02 |
|
Low Temp |
16.0 |
°C |
23 |
0.0 |
°C |
11 |
28.0 |
°C |
2017-16 |
-3.0 |
°C |
2020-21 |
|
Humidex |
30 |
|
01 |
|
|
|
41 |
|
2017-24 |
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Wind Chill |
|
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|
n/a |
|
n/a |
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-2 |
|
2020-19 |
|
Dew Point |
18.1 |
°C |
04 |
-3.6 |
°C |
20 |
23.6 |
°C |
2018-03 |
-3.6 |
°C |
2025-20 |
|
Relative Humidity |
100 |
% |
01 |
23 |
% |
20 |
100 |
% |
2017-04 |
0 |
% |
n/a-n/a |
|
Barometric Pressure |
1029.0 |
mb |
09 |
1002.0 |
mb |
04 |
1038.0 |
mb |
2020-21 |
0.0 |
mb |
n/a-n/a |
|
Winds |
41 |
km/h |
05 |
|
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|
41 |
km/h |
2025-05 |
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- from |
SSW (203) |
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SSW (203) |
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Wind Gust |
n/a |
km/h |
n/a |
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|
46 |
km/h |
2017-04 |
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|
Daily Mean |
Max |
DD |
Min |
DD |
RecHi |
YY-DD |
RecLo |
YY-DD |
|
Temperature |
19.8 |
°C |
03 |
9.0 |
°C |
20 |
28.0 |
°C |
2017-16 |
5.6 |
°C |
2017-02 |
|
Dew Point |
17.0 |
°C |
23 |
-0.3 |
°C |
20 |
22.0 |
°C |
2018-03 |
-0.3 |
°C |
2025-20 |
|
Relative Humidity |
89 |
% |
23 |
48 |
% |
30 |
100 |
% |
2017-18 |
48 |
% |
2017-17 |
|
Barometric Pressure |
1027.0 |
mb |
09 |
1005.5 |
mb |
04 |
1033.5 |
mb |
2020-20 |
1000.0 |
mb |
2017-05 |
|
Visibility |
24 |
km |
01 |
12 |
km |
05 |
24 |
km |
2025-01 |
12 |
km |
2025-05 |
|
Winds |
18 |
km/h |
30 |
6 |
km/h |
01 |
19 |
km/h |
2024-08 |
0 |
km/h |
2017-15 |
|
- from |
WNW (289) |
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NNW (346) |
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NNW (339) |
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N (000) |
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Daily Total |
Max |
DD |
|
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|
RecHi |
YY-DD |
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Snowfall |
0.0 |
cm |
01 |
|
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|
0.0 |
cm |
2017-01 |
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- Water Equiv. |
0.0 |
mm |
01 |
|
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|
0.0 |
mm |
2017-01 |
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Rainfall |
0.0 |
mm |
01 |
|
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|
28.0 |
mm |
2017-16 |
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Total Precipitation |
0.0 |
mm |
01 |
|
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|
28.0 |
mm |
2017-16 |
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