As spring unfolds, apple tree lovers are watching a dynamic and sometimes unpredictable set of weather patterns unfold that could significantly influence apple fruit development and bloom timing, leading to the risk of freeze damage.
Early Spring Weather Trends
Across much of the Midwest in late winter and early spring 2026, weather patterns have alternated between warmer spells and cold snaps. February saw wet systems moving through the region, with mixed precipitation and temperature swings that have kept soil moisture variable and temperatures going up then down then up again. Climate outlooks for March–May show near-normal temperatures overall, meaning apple tree growers should prepare for both cooler stretches and the typical spring warming trend through late April and May. Precipitation is also expected to increase through spring, bringing more rain and storm potential than in winter.
Warm Spells and Freeze Risk: An Ongoing Concern
One of the biggest challenges for apple tree growers is the timing of warmth. Warm periods can trick trees into breaking dormancy prematurely, leading buds and flowers to develop earlier than usual. When that happens, the risk of significant frost or freeze damage increases if cold air returns, which it often does through April and even into early May in much of the Midwest. Historically, spring freezes, even brief ones, have been a major threat to apple flowers because buds at early growth stages are highly vulnerable. For example, critical temperatures that cause partial or major bud damage can be several degrees above freezing once buds have begun to swell.
What Should Apple Tree Owners Watch Next?
Spring weather in the Midwest is inherently variable. The best way to figure out how low the trees can handle is by monitoring the apple bud stages. Michigan State University has a great chart for apple, pear, peach, plum, and cherry tree bud stages and temperature sensitivity. Spring Freeze Damage Thresholds for Tree Fruit, Michigan State University (PDF).
Unfortunately, there isn’t much that can be done to save the buds in most backyard orchards. If your tree does lose its fruit, it can be a good idea to do a summer pruning of any water sprouts in late July to help keep the tree in check. The energy the tree was going to put into the apples will be diverted to making more wood, which means more pruning later.
Links to this article are strongly encouraged, and this article may be republished without further permission if published as written and if credit is given to the author, Yard and Garden, and Iowa State University Extension and Outreach. If this article is to be used in any other manner, permission from the author is required. This article was originally published on March 3, 2026. The information contained within may not be the most current and accurate depending on when it is accessed.