Ottawa Weather Records🌤
@YOW_Weather
Followers
13K
Following
27K
Media
10K
Statuses
26K
Rolf Campbell: Weather historian and forecaster. I gather statistics from Environment Canada and across the web to generate alerts & forecasts.
Ottawa, Ontario, Canada
Joined October 2013
My pay forecasts will stop your guessing. DM me for details.
1
0
13
Over the past 72 years, #Ottawa's average wind has decreased by 0.9 ± 1.1 km/h (95% CI). #YowWx #OttWeather
1
1
4
Over the past 72 years, #Ottawa's average humidity has increased by 2.3 ± 2.1% (95% CI). #YowWx #OttWeather
1
0
8
Over the past 72 years, #Ottawa's average dewpoint has increased by 1.9 ± 0.7°C (95% CI). #YowWx #OttWeather
0
1
7
Over the past 70 years, #Ottawa's annual cumulative snowpack has decreased by 808 ± 1145 cm·days (95% CI). #YowWx #OttWeather
0
3
13
Over the past 152 years, #Ottawa's annual snowfall has decreased by about 34 ± 36 cm (95% CI). #YowWx #OttWeather
1
1
8
Over the past 152 years, #Ottawa's annual rain has increased by about 216 ± 65 mm (95% CI). #YowWx #OttWeather
0
0
6
Over the past 152 years, #Ottawa's annual precipitation has increased by about 108 ± 65 mm (95% CI). #YowWx #OttWeather
0
0
6
Over the past 152 years, #Ottawa's annual low temperature has increased by 2.5 ± 0.5°C (95% CI). #YowWx #OttWeather
1
2
5
Over the past 152 years, #Ottawa's annual high temperature has increased by 1.4 ± 0.5°C (95% CI). #YowWx #OttWeather
1
3
11
#Ottawa just had its driest December since December 2014. Total precipitation was just 45.5 mm. #YowWx #OttWeather
1
1
16
For only the 8th time in recorded history, #Ottawa stayed above -23.9°C during an entire year (2025). #YowWx #OttWeather
0
3
9
For only the 10th time in recorded history, #Ottawa had fewer than 14 thunderstorm days during a year (2025). #YowWx #OttWeather
0
2
11
#Ottawa just had its driest year since 2015. Total precipitation was just 774.2 mm. #YowWx #OttWeather
1
5
17
After a snowy start to the cold season in Ottawa, things have slowed down. If we don't get any snow during the next week, we'll fall below the 30-year median.
3
5
28
With a forecast high of just -15°C, tomorrow is forecast to be #Ottawa's coldest day in almost 3 years, since Feb 4th, 2023. #YowWx #OttWeather
0
0
1
0
2
11
During December 2025, #Ottawa had 7 above median days and 24 below median days (by maximum temperature). #YowWx #OttWeather
0
1
15
0
3
14
Over the past 152 years, #Ottawa's mean temperature has increased by 2.2 ± 0.5°C (95% CI). #YowWx #OttWeather #OttNews
1
2
13
Tomorrow's forecast low of -25°C could be the lowest temperature #Ottawa has recorded in almost 3 years, since Feb 4th, 2023. #YowWx #OttWeather
0
4
18