If you're a person who likes to walk for your daily dose of exercise, make sure you bend your elbows while you're walking. Doing this will make you swing your arms faster and in turn you'll move your legs faster. Not only will you either finish your work out sooner or go further, but you'll burn even more calories while you're doing it!
Do not let yourself be put off by the weather. The weather in no excuse not to work out. If you mean to jog outside and you find that it is raining, work around that. You can still get out and walk in a light drizzle. If the weather is terrible, find an alternative inside.