The British weather is renown throughout the world for being very interchangeable & unpredictable, rain is quite frequent so it's a good idea to carry an umbrella or coat with you when you're out and about during winter months on Dartmoor.
Temperatures in Dartmoor range from 1.45 to 22.45 (Celcius).
Rainfall in Dartmoor varies from 111.0 to 255.0 (mm/month).