Last spring frost
May 31
Frost Dates for Newberry, MI
First fall frost
Oct 1
Growing season
122 days
Hardiness zone
5a
In an average year around Newberry, MI, the last spring frost (32°F) is about May 31 and the first fall frost is about Oct 1, giving roughly a 122-day growing season. To be safe most years, wait until May 15 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Jul 7 | Jun 12 | May 29 |
| Freeze (32°F) | Jun 16 | May 31 | May 15 |
| Hard (28°F) | Jun 1 | May 16 | Apr 29 |
| Severe (24°F) | May 19 | Apr 30 | Apr 17 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Jul 7 | Jun 28 | Jun 21 | Jun 16 | Jun 12 | Jun 9 | Jun 5 | Jun 2 | May 29 |
| 32°F | Jun 16 | Jun 10 | Jun 5 | Jun 2 | May 31 | May 28 | May 25 | May 22 | May 15 |
| 28°F | Jun 1 | May 27 | May 23 | May 20 | May 16 | May 12 | May 8 | May 4 | Apr 29 |
| 24°F | May 19 | May 12 | May 7 | May 3 | Apr 30 | Apr 28 | Apr 25 | Apr 22 | Apr 17 |
| 20°F | May 2 | Apr 28 | Apr 24 | Apr 20 | Apr 18 | Apr 15 | Apr 12 | Apr 8 | Apr 4 |
| 16°F | Apr 21 | Apr 16 | Apr 12 | Apr 10 | Apr 6 | Apr 4 | Apr 2 | Mar 31 | Mar 26 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Aug 29 | Sep 17 | Oct 1 |
| Freeze (32°F) | Sep 14 | Oct 1 | Oct 14 |
| Hard (28°F) | Sep 30 | Oct 14 | Oct 31 |
| Severe (24°F) | Oct 13 | Oct 29 | Nov 12 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Aug 29 | Sep 4 | Sep 9 | Sep 13 | Sep 17 | Sep 20 | Sep 23 | Sep 27 | Oct 1 |
| 32°F | Sep 14 | Sep 21 | Sep 25 | Sep 28 | Oct 1 | Oct 3 | Oct 5 | Oct 9 | Oct 14 |
| 28°F | Sep 30 | Oct 4 | Oct 8 | Oct 11 | Oct 14 | Oct 17 | Oct 21 | Oct 26 | Oct 31 |
| 24°F | Oct 13 | Oct 18 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 4 | Nov 8 | Nov 12 |
| 20°F | Oct 27 | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 14 | Nov 17 | Nov 19 | Nov 26 |
| 16°F | Nov 7 | Nov 12 | Nov 16 | Nov 19 | Nov 21 | Nov 25 | Nov 28 | Dec 1 | Dec 7 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Paradise, Mi, about 4.5 miles away@if(!empty($station['elevation_ft'])), at 628 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Newberry, MI?
On average, the last spring frost (32°F) around Newberry, MI is about May 31. In cooler years it can run later, so for a safer bet many gardeners wait until May 15.
When is the first frost in the fall?
The first fall frost around Newberry, MI typically arrives about Oct 1. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around May 31 on average, or May 15 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 122 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 49768 Planting calendar → Michigan frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026