June 2015 was fairly normal in terms of temperature, finishing only half a degree above normal. Although rain was frequent, June still finished drier than normal with only 65.2 mm of rain, 73% of normal.
The first thunderstorm of the year at the airport occurred on June 7. This was the 3rd latest start to the thunderstorm season on record since 1953. This follows a 2nd latest start (June 10) just two years ago.
Top 5 latest starts to the thunderstorm season at Winnipeg airport since 1953:
1. June 28 (1958)
2. June 10 (2013)
3. June 7 (2015)
4/5. June 3 (1992 and 1995)
Once the storm season finally began, it remained reasonably active. There were 6 thunderstorm days in total in June, which is bang on normal. However, with a late start to the season we are running below the normal of 11 days for the year up to June.
Record high dewpoints look possible in southern Manitoba today, including Winnipeg. Dewpoints may reach 24-25°C later in the afternoon and evening. Old dewpoint record for today is 23.9°C in 1955. Heat warnings have been issued with humidex values expected to reach the low 40's.
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