1. Temperature & Humidity

Air temperature, soil temperature (10-cm depth), and dew point in degrees Celsius (15-minute averages). Air temperature shows hourly, daily, and seasonal patterns related to changes in cloud cover, synoptic weather, sun angle, and length of day. Soil temperature shows similar patterns but changes more slowly and often hovers near freezing in winter.  Dew point is a good predictor of minimum temperature on calm, clear nights. (See all real-time data graphs.)