Saturday, 28 July 2012

July Heat Continues

     It will continue to be hot in southern Manitoba for the next several days. Daytime highs will be near 30 for the next week.

     Today, it will be near 30, however it will be a drier heat today. Tomorrow will be a little different. Highs near 32°C are expected for Winnipeg, but humidity will be a little more oppressive. Dewpoints in the high teens and near 20 will give humidex values between 38 and 40. Storms will also be possible today and tomorrow, with the best chance being tomorrow. The best risk will be in the Interlake, western and eastern Manitoba on both days. Large hail and torrential downpours will be the main threats, along with a damaging wind threat tomorrow. Tornadoes don't look likely.

     With a hot end to July, this July will likely end up among the top 5 warmest Julys on record. We may even have a shot at second warmest depending on how warm it is the next few days. Currently, the average mean for July 2012 is 22.0°C. The second warmest July was in 1914, 1916 and 1935 with an average mean of 22.4°C, which is certainly within reach. Stay tuned July 31 and August 1 for the answer!


  1. Looks like we will hit 31 or 32°C in the city today, a degree or two warmer than anticipated. Certainly a hot day! The cloud is clearing out, and we'll be left with partly cloudy skies to end the afternoon.

  2. There is a chance for thunderstorms overnight in Winnipeg. Elevated convection may start to fire later in the evening in southwestern or south-central Manitoba associated with the llj. However, uncertainty exists given the fact that nocturnal convection is very difficult to predict. I'll try to give another update later this evening.

  3. Check the thunderstorm forecast tab for my thoughts on tonight's storm potential.