It can be easy to forget, but in this transitional period before the start of spring it really is crucial to keep track of the weather. And every gardener's secret weapon is the Last Frost Date Map, courtesy of the Old Farmers' Almanac.
This essential diagram predicts when the final frost will come in each region of the US and Canada, helping gardeners to figure out when to start planting flowers for spring. And this year, many US regions can expect the last frost to arrive earlier than normal.
Ready to get your spring gardening calendar in order? Here's everything you need to know about the Last Frost Date Map predictions for 2026.
What is the Last Frost Date Map?
Every year, the Old Farmer's Almanac draws up a map that details the last frost date expected in every region of the US and Canada. The map indicates whether the last frost is predicted to be earlier than normal, later than normal, or simply average.
It's worth noting that the Old Farmer's Almanac also has a Frost Date Calculator which uses a 30-year average to help calculate the last frost date by zip code – but the Last Frost Map is released yearly, to offer predictions on that particular season.
Why Does the Last Frost Date Matter?
The discrepancy between frost dates is usually only a matter of days, but even the smallest change can be the difference between thriving seeds and failed crops at the start of spring.
This year, the last frost is expected to arrive early in a notable amount of regions – and this vital information will help gardeners get a head start on their planting without the risk of damaging their seedlings.
Meanwhile, in areas with a delayed frost date, gardeners can hold off, waiting to pick up their tools until the harsh weather has finally departed.
(Handy buys like these Amazon plant covers and plastic garden cloches, also from Amazon will help protect plants from frost before warmer days arrive, while adding a layer of mulch to plants will form a natural barrier against the cold – you can pick up Miracle-Gro Organic Mulch from Walmart.)
The Last Frost Date for Each Region
In 2026, the US regions with an earlier-than-normal last frost include Boston, Kentucky, the Carolinas, eastern Georgia and northern Texas.
The same goes for much of New England and parts of New Jersey, New York City, Philadelphia, Missouri and Kansas, plus many low-elevation California and desert zones.
Near-normal last frost dates are predicted in the Appalachians, the Deep South, most of the Upper Midwest, and norther Iowa, as well as the north and southern tip of Florida.
Michigan, Chicago and the Great Lakes cities are also close to average, alongside the Pacific Northwest, the High Plains (Nebraska, Northern Colorado and the Dakotas), most of the Mountain West, and central Texas and Oklahoma.
Finally, later-than-average frost dates are expected in central Florida, northern Montana, southern areas of Texas (near San Antonio), and the Intermountain region (Idaho, eastern Oregon/Washington, northern Utah and Nevada). You can find the full Frost Map here.
How is the Last Frost Date Calculated?
To calculate the last frost date across the US and Canada, the Old Farmer's Almanac combines long-term weather forecasts with data from previous years. This is then used to predict whether the last frost will deviate from or align with the average.
Ultimately, the map is intended to inform spring gardening checklists and give gardeners a better idea of when to start planting – especially when it comes to hardy plants which are in fact frost-tolerant and prefer milder spring weather to the warmer temperatures that we'll enjoy in the upcoming months.
What to Shop
Use this handy thermometer to get an instant temperature reading on soil and compost. It's ideal for the chilly period before the last frost, though it can also be used for houseplants.
Looking for cold frame ideas? There are plenty of different types of cold frames, but this wooden version is ideal for letting in light while protecting plants from winter weather.
This multifunctional soil meter measures moisture, pH, and sunlight levels alongside temperature, helping you find out more about your soil before you plant.
Spring might be on the way, but it isn't here just yet – and if you're worried about the cold weather, check out our tips on how to overwinter a garden.
Plus, if you love inspiring garden ideas, outdoor advice, and the latest news, why not sign up for our newsletter and get the latest features delivered straight to your inbox.
