Welcome to the world of Winter road riding. :rofl: This is why many roadies hit the trails in the colder months.
Potholes are obvious but also consider the debris that has come out of them. The gravel and other bits can cause flats. Once it snows, the road crews through out sand and salt. Heavy snow and ice breaks tree branches. The shoulders are littered with debris this time of year.
Do yourself a favor and ride a little bit to the left. Get closer to traffic. traffic provides a natural sweeping action and cleans the road. The further from traffic you are, the more debris you will encouter.
Consider purchasing a tire for winter riding. If you bought the bike over the summer, the tread may be running thin. Get a pair of cheapo's with new tread to use until spring. There are also high quality tires that add additional layers of flat protection.
OTOH, there may be something else going on. Pull the tire and tube off that rim. Ensure that the rim strip is covering all the spoke holes. Check the inside and outside of the tire for embedded stuff that is causing multiple flats.