2009 Barometric Pressure Readings In Missouri Why Are We Having High Pressure When The Weather Is Bad.?

Why are we having high pressure when the weather is bad.? - 2009 barometric pressure readings in missouri

Today, January 10-2009, the climate is not very good, others by strong rain in the afternoon after the snowfall. However, the air pressure was about 103 MB in the last two days. (Reported, not only on the net, but also in my own barometer)
It is almost as large as in summer when we are good weather, sunny and clear. At 1645hrs, in 103.18.