Long stretches of 90 degree weather in the northern plains is somewhat unusual. Taking Fargo as an example, since 1881, there have been only 20 instances where the high temperature has been at or above 90 degrees for six consecutive days or longer. The most brutal heat wave recorded in this area was back in 1936 when 15 straight days of 90 degree temperatures was observed with eight of those days exceeding 100 degrees. The second longest stretch of extreme heat locally occurred during the summer of 1976 when nine straight days above 90 degrees occurred during late August of that summer. No 90s are expected this week in the area.