USDA Hardiness Zone 5b
Frost Dates for 49337 — Newaygo, Michigan
NOAA 1991–2020 normals from Fremont 4 WSW, MI (800 ft), 15 miles west.
Updated
In Newaygo, the last spring frost (32°F) is around May 8 in half of years and has passed by May 25 in nine years out of ten. The first fall frost comes around October 11, as early as September 30 one year in ten, leaving a typical freeze-free season of 155 days (NOAA, Fremont 4 WSW, MI).
- Last spring frost
- May 8
- First fall frost
- October 11
- Growing season
- 155 days
- Hardiness zone
- 5b
50% probability
50% probability
freeze-free, 50%
-15 to -10°F (-26.1 to -23.3°C) coldest night
- First snow
- November 16
- Last snow
- March 31
- Winters with snow
- 100%
- Snow per year
- 63.8"
median, 1991–2020
median, 1991–2020
16 of 16 observed
NOAA normal
Frost risk by date in Newaygo
Half of springs at Fremont 4 WSW, MI see their last 32°F night by May 8; only one in ten is past it by April 24, and one in ten still has one after May 25. Planting tender crops after May 16 leaves a 30% risk of a frost on them, after May 20 20%, and after May 25 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 62% of the 172 Michigan stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 11 in half of years, as early as September 30 one year in ten, and holds off past October 25 one year in ten. A hard freeze of 28°F follows 14 days later, around October 25; in spring the one-in-ten date for 28°F is May 14, 11 days before the 32°F one. The freeze-free season lasts 155 days in a typical year, shorter than at 58% of the 172 Michigan stations; it reaches 176 days one year in ten and falls short of 134 one year in ten. On average 149 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 13 days longer, to about May 21, and return around October 1. Severe cold of 16°F or below comes every winter, usually between December 3 and March 24.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 6 | May 11 | May 15 | May 19 | May 21 | May 24 | May 27 | May 30 | Jun 3 |
| 32°F | Apr 24 | Apr 29 | May 2 | May 5 | May 8 | May 12 | May 16 | May 20 | May 25 |
| 28°F | Apr 11 | Apr 17 | Apr 20 | Apr 23 | Apr 27 | Apr 30 | May 3 | May 7 | May 14 |
| 24°F | Mar 30 | Apr 3 | Apr 7 | Apr 10 | Apr 14 | Apr 17 | Apr 20 | Apr 24 | May 1 |
| 20°F | Mar 17 | Mar 23 | Mar 28 | Mar 31 | Apr 2 | Apr 4 | Apr 7 | Apr 10 | Apr 16 |
| 16°F | Mar 6 | Mar 14 | Mar 18 | Mar 21 | Mar 24 | Mar 27 | Mar 30 | Apr 1 | Apr 6 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 18 | Sep 23 | Sep 27 | Sep 30 | Oct 1 | Oct 4 | Oct 6 | Oct 9 | Oct 13 |
| 32°F | Sep 30 | Oct 3 | Oct 6 | Oct 9 | Oct 11 | Oct 14 | Oct 16 | Oct 20 | Oct 25 |
| 28°F | Oct 11 | Oct 15 | Oct 19 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 2 | Nov 8 |
| 24°F | Oct 27 | Oct 31 | Nov 2 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 18 | Nov 25 |
| 20°F | Nov 6 | Nov 11 | Nov 15 | Nov 18 | Nov 22 | Nov 25 | Nov 30 | Dec 3 | Dec 9 |
| 16°F | Nov 15 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 6 | Dec 11 | Dec 16 | Dec 22 |
Freeze probabilities 1991–2020 at Fremont 4 WSW, MI, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 49337 →Compare Newaygo with another place →
Frost risk through the year in Newaygo
In Newaygo, the spring curve drops under 10% on May 25 and the fall curve passes 10% on September 30, 128 days later; that gap is shorter than at 53% of the 172 Michigan stations with frost dates. The spring risk falls from 90% to 10% over 31 days (April 24 to May 25) and the fall risk climbs from 10% to 90% over 25 days (September 30 to October 25): both ends of the season vary about as much. At Kent City 2 SW, MI, 16 miles south, the same gap runs from May 31 to September 14, 22 days shorter.
| Planted on | Another 32°F night | 28°F night |
|---|---|---|
| Apr 24 | over 90% | 58% |
| May 1 | 73% | 37% |
| May 850% date | 50% | 19% |
| May 15 | 33% | under 10% |
| May 22 | 16% | under 10% |
| May 29 | under 10% | under 10% |
Weather by month in Newaygo
July is the warmest month at Fremont 4 WSW, MI, averaging 80°F by day and 58°F at night; January is the coldest at 30°F and 16°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 74% of years.
Warmth for growing adds up to 2,272 growing degree days a year (base 50°F), fewer than at 58% of the 172 Michigan stations. 32% of them (731) have built up by the end of June, and July adds the most, 581.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 30 | 16 | 100% | 29 | 0 |
| Feb | 32 | 16 | 100% | 27 | 0 |
| Mar | 42 | 23 | 100% | 26 | 13 |
| Apr | 55 | 33 | 100% | 14 | 46 |
| May | 67 | 44 | 74% | 2 | 214 |
| Jun | 76 | 54 | 2% | 0 | 458 |
| Jul | 80 | 58 | 0% | 0 | 581 |
| Aug | 78 | 56 | 0% | 0 | 532 |
| Sep | 71 | 50 | 12% | 0 | 329 |
| Oct | 59 | 39 | 96% | 6 | 91 |
| Nov | 45 | 30 | 100% | 19 | 8 |
| Dec | 34 | 22 | 100% | 28 | 0 |
Monthly normals 1991–2020 at Fremont 4 WSW, MI (800 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Kent City 2 SW, MI, 16 miles south of Newaygo, has a last frost 6 days later (May 14), a first frost 12 days earlier (September 29), a season 20 days shorter.
When it snows in Newaygo, Michigan
The first measurable snow (0.1 inch or more) in Newaygo usually arrives around November 16, and the last of the season around March 31. Those are the middle dates across the winters of 1991–2020 at White Cloud 9E, MI, 11.2 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 38 days after the last snow.
Planting calendar for 49337
| When | What to do |
|---|---|
| February 27 – March 13 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| March 13 – March 27 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| April 10 – April 24 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| May 8 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 19 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by September 27 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 11 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 49337 is 15 miles from Fremont 4 WSW, MI, which stands at 800 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 49337 in zone 5b, the band where the coldest night of the year averaged -15 to -10°F (-26.1 to -23.3°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.