Yellow flower covered in frost in Minnesota garden. Summer's on its way out, and the frost countdown has begun—find out when Minnesota will freeze over! These are the dates you need to know.

Minnesota’s First Frost Alert! Old Farmer’s Almanac Reveals the Dates You NEED to Know!

Summer’s on its way out, and the frost countdown has begun—find out when Minnesota will freeze over! These are the dates you need to know. 🌐 #News #StPaulMN #Minnesota #Weather

ST. PAUL, MN – Summer in Minnesota always seems to fly by. As we enter August, thoughts shift from barbecues and beach days to back-to-school shopping and the approaching fall season. With the change in season, the first frost is on the horizon.

According to the Old Farmer’s Almanac, several Minnesota cities can expect their first frost dates soon.

Understanding the Almanac’s Predictions

The Old Farmer’s Almanac provides frost date predictions based on historical weather data. It uses the average dates of the first light freeze in locations across the United States and Canada.

A light freeze is defined as temperatures between 29 and 32 degrees Fahrenheit, which can be fatal to tender plants. The Almanac also tracks moderate freezes (25 to 28 degrees Fahrenheit) and severe freezes (24 degrees and below), though the predictions for first frost focus on the light freeze temperatures.

To offer a glimpse into the coming fall, we’ve gathered frost date predictions for several cities across Minnesota.

Frost Dates for Selected Minnesota Cities

The Old Farmer’s Almanac allows users to input their zip codes to find specific frost dates.

To simplify the process, we’ve selected several cities from different regions of Minnesota. Here are the expected first frost dates according to the Almanac:

  • Albert Lea, MN – October 4th
  • Detroit Lakes, MN – September 18th
  • Duluth, MN – Oct 5th
  • Grand Marais, MN – September 29th
  • Hermantown, MN – September 26th
  • International Falls, MN – September 16th
  • Mankato, MN – Oct 2
  • Minneapolis, MN – October 10th
  • St. Cloud, MN – September 25th
  • Virginia, MN – September 26th
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Preparing for the First Frost

As these dates approach, Minnesotans will start to notice the cooler nights and shorter days signaling the end of summer. It’s a good time to prepare gardens, bring in delicate plants, and get ready for the inevitable shift to colder weather. Whether you’re in the northern or southern part of the state, the first frost is a reminder that winter is just around the corner.

Stay tuned to JackAndKitty.com for more updates as the season progresses, and keep an eye on forecasts to know exactly when that first frost will hit your area.

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2 Comments

  1. Cyndi Osier says:

    Wondering why the frost date for cities north and west of St. Cloud are not included? You missed West Central. Such as Alexandria, Fergus Falls, Moorhead.

  2. Hi Cyndi, thanks for reading and commenting. Great point – appreciate your feedback! Hope you have a great Monday! – Jack and Kitty