Right now in the mid west of the country, the weather is playing with us as is customary this time of the year. Last week we had 3 inches of snow and yesterday it was 61 degrees.
This weather moodiness though does give you an opportunity to get out and workout. Take your opportunities however they present yourself and get out of the house, office or where ever you may find yourself and hit the road for a 30 minute walk or run.
If you have not already done so, use a service like weather.com to see what the 10-day forecast looks like and plan your week based on the weather. If it's going to be dreadfully cold, then plan to go to the gym. If its going to be warmer, then plan to get out into the open.
Do not wait around for the weather to present itself, plan your workouts around the weather.