Get the latest Michigan Weather News, Forecast and Radar in your town and more at MLive.com. State Weather Alerts Michigan There are currently no active weather alerts. Since you'll likely be dressed in long pants & jackets, you shouldn't need any other bug protection. Weather forecasts for all towns and cities in Michigan State Bugs should be no problem in May because it will likely be too cold (the average high is only 60). Updated Michigan State weather maps. The average humidity in May is listed below for places in Michigan. Average temperatures and precipitation amounts for more than 168 cities in Michigan. Weather in May The last month of the spring, May , is an agreeable month in Lansing , Michigan , with average temperature fluctuating between 68.7°F (20.4°C) and 46.8°F (8.2°C). Climate in Michigan. Edited: 4 years ago Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Michigan Local Weather Center. Temperature The tables give daily averages along with highest and lowest relative humidity levels. View full sizeThe southern half of Lower Michigan has shoveled snow in May. Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Michigan City area. Michigan State Weather. Michigan City Weather Forecasts. A climate chart for your city, indicating the monthly high temperatures and rainfall. As the weather warms, bug activity increases. Happy travels!