Monday, October 17, 2011

Record Warmest October?

Temperatures in Grand Forks (GFK) have trended much closer to normal over the past few days. When I last posted, I had listed temperature departures for the first eight days of the month. During the stretch, we started off the month with an average daily temperature departure of +17.87°F.

Since then, GFK has had the following temperature departures: +5, +11, +13, +15, +5, +1, +3, and +4. The first thing I noticed is that we have trended closer to normal the past four days. However, we have now gone halfway through October and have been above normal every single day! That is just incredible to think about.

Our average temperature for October is now at 58.9°F, while our daily temperature departure through 10/16 now stands at +12.5°F. Comparing that to the GFK climatological normals, our normal mean temperature for October is 44.3°F. The warmest October on record in GFK occurred in 1973, with a monthly mean temperature of 50.1°F, or +5.8°F above normal.

We stand a chance of breaking the record for warmest October ever. Just doing some quick math, our average daily temperature for the remainder of the month is going to have to be warmer than 40.04°F (daily departure of -1.74°F from 10/17 through 10/31) to break the record. Certainly, it would only take one cold snap at the end of the month to jeopardize our chances. So the math says it is still too early to say if this will be a record breaking month, but it certainly has been a warm start nonetheless.

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