Transition to more Northerly

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The featured chart presents the monthly average wind speed and wind direction for Ames based on period of record data for the site. The average wind direction is computed by vector averaging the wind speed components. It is interesting to see the wind direction cycle from southerly during the summer months to northerly during the cold season. Since Iowa is well far away from significant bodies of water, our temperatures are often heavily influenced by the source region of the air mass currently visiting the state. The wind direction gives a good first guess as to where the air is coming from. The first half of this week will be very pleasant thanks to southerly winds present.

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