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Weather Prediction Accuracy

Below are three day Brandon, Manitoba forecasts for each day this year in addition to what the actual daytime high temperature ended up measuring. In brackets are the difference between predicted high and actual high. The intention of this feature is not to undermine Environment Canada. We respect how difficult it is to predict the weather from day-to-day, and are simply providing a means by which to understand and respect that difficulty.

DateDaytime high1 day prediction2 day prediction3 day prediction
January 210.61 (0.4)2 (1.4)2 (1.4)
January 20-3.9-1 (2.9)1 (4.9)3 (6.9)
January 19-0.84 (4.8)6 (6.8)5 (5.8)
January 180.4-4 (4.4)5 (4.6)6 (5.6)
January 16-5.4-5 (0.4)-5 (0.4)-6 (0.6)
January 15-9-4 (5.0)-7 (2.0)-9 (0.0)
January 14-14.8-10 (4.8)-10 (4.8)-8 (6.8)
January 14-14.8-10 (4.8)-10 (4.8)-8 (6.8)
January 14-14.8-10 (4.8)-10 (4.8)-8 (6.8)
January 13-19-16 (3.0)-12 (7.0)-13 (6.0)
January 12-24.40 (24.4)-23 (1.4)-22 (2.4)
January 11-25.8-21 (4.8)-20 (5.8)-20 (5.8)
January 11-25.8-21 (4.8)-20 (5.8)-20 (5.8)
January 10-17.3-18 (0.7)-17 (0.3)-18 (0.7)
January 09-19.8-17 (2.8)-19 (0.8)-18 (1.8)
January 08-16.8-19 (2.2)-18 (1.2)-18 (1.2)
January 08-16.8-19 (2.2)-18 (1.2)-18 (1.2)
January 07-22.3-11 (11.3)-17 (5.3)-20 (2.3)
January 06-16.3-20 (3.7)-20 (3.7)-20 (3.7)
January 05-20.4-20 (0.4)-22 (1.6)-17 (3.4)
January 05-20.4-20 (0.4)-22 (1.6)-17 (3.4)
January 05-20.4-20 (0.4)-22 (1.6)-17 (3.4)
January 04-23.8-21 (2.8)-20 (3.8)-20 (3.8)
January 04-23.8-21 (2.8)-20 (3.8)-20 (3.8)
January 03-20-19 (1.0)-19 (1.0)-18 (2.0)
January 02-16.2-13 (3.2)-15 (1.2)-16 (0.2)
January 02-16.2-13 (3.2)-15 (1.2)-16 (0.2)
January 01-11.3-12 (0.7)-12 (0.7)-11 (0.3)

 
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