Tempered only by below normal rainfall in the north and west, heavy rains in the southeastern half of the state helped the month to rank as the 32nd wettest September on record. The southeast climate division's average rainfall total was nearly 4 inches above normal and ranked as the sixth wettest on record for that area. On the other hand, north central Oklahoma's average rainfall total was nearly 2 inches below normal and ranked as the 22nd driest on record. The heavy rains were prompted by a pair of upper-level systems that plagued the state for about 10 days in the month's middle. The first system approached from the north and combined with a front to bring heavy rains to the northeast and then the south. The second system formed to the south and meandered about the area for days, peppering the state with oddly moving southeast-to-northwest rains. Several strong cold fronts kept the state on the cool side and the month ranked as the 16th coolest on record. Severe weather was uncommon during the month, although reports of flooding were plentiful, especially in the eastern third of the state.

Full monthly summary available online at:
http://climate.mesonet.org/monthly_summary.html