Lagrange Weather Forecasts. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Lagrange area., Lagrange IN Tonight Low: 33 °F Chance Rain and Patchy Fog Thursday High: 45 °F Patchy Drizzle and Areas Fog Thursday Night Low: 39 °F Cloudy Friday High: 50 °F Rain Friday Night Low: 45 °F Rain Likely Saturday High: 56 °F Rain Likely Saturday Night Low: 43 °F Chance Rain Sunday High: 49 °F Chance Rain Sunday Night Low: 36 °F Slight , Discover the weather conditions in Lagrange & see if there is a chance of rain, snow, or sunshine. Plan your activities, travel, or work with confidence by checking out our detailed hourly forecast for Lagrange., Get accurate hourly forecasts for today, tonight, and tomorrow, along with 10-day daily forecasts and weather radar for Lagrange, IN with MSN Weather. Stay updated on precipitation, severe, Get Lagrange, IN current weather report with temperature, feels like, wind, humidity, pressure, UV and more from TheWeatherNetwork.com., Lagrange, IN 12 hour by hour weather forecast includes precipitation, temperatures, sky conditions, rain chance, dew-point, relative humidity, wind direction with speed, ceiling height, and visibility..