Noticed temperature guage is rising, Has this happen to anyone Options

[hotgoods23]

As most of you know -Houston, Texas is in recovery mode right now from the aftermath of hurricane Ike. Majority of street lights has caused each and every stoplight to become a 4-way stop. It practically took me 2 hours to drive home from work which usually only takes me 30 to 45 minutes top. Anyways as I got closer to my pad my temp. guage would rise as a I accelerated up from idle to 40 mph if and when I was given a chance to accelerate at a distance of two blocks at certain routes I was taking to avoid traffic. Radiator has been replaced, coolant has been topped off, and thermostat has been replaced as well. Is this normal for our cars to do once they have hit 140'000 in mileage, one thing I can conclude my oil was running low so I added 10w 30, it was down to a quart so I added about 2 quarts to it and it is about 400 miles past stil waiting for an oil change.

Any suggestions would be greatly appreciated.