USDA Hardiness Zone 6a
Frost Dates for 63537 — Edina, Missouri
NOAA 1991–2020 normals from Steffenville, MO (705 ft), 20 miles southeast.
Updated
In Edina, the last spring frost (32°F) is around April 17 in half of years and has passed by May 4 in nine years out of ten. The first fall frost comes around October 19, as early as September 30 one year in ten, leaving a typical freeze-free season of 184 days (NOAA, Steffenville, MO).
- Last spring frost
- April 17
- First fall frost
- October 19
- Growing season
- 184 days
- Hardiness zone
- 6a
50% probability
50% probability
freeze-free, 50%
-10 to -5°F (-23.3 to -20.6°C) coldest night
- First snow
- December 1
- Last snow
- March 17
- Winters with snow
- 100%
- Snow per year
- 19.8"
median, 1991–2020
median, 1991–2020
23 of 23 observed
NOAA normal
Frost risk by date in Edina
Half of springs at Steffenville, MO see their last 32°F night by April 17; only one in ten is past it by April 3, and one in ten still has one after May 4. Planting tender crops after April 24 leaves a 30% risk of a frost on them, after April 29 20%, and after May 4 10%. The 17 days between the even-odds date and the one-in-ten date is wider than at 66% of the 158 Missouri stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 19 in half of years, as early as September 30 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 11 days later, around October 30; in spring the one-in-ten date for 28°F is April 23, 11 days before the 32°F one. The freeze-free season lasts 184 days in a typical year, shorter than at 81% of the 158 Missouri stations; it reaches 202 days one year in ten and falls short of 160 one year in ten. On average 113 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 April 30, and return around October 7. Severe cold of 16°F or below comes every winter, usually between November 28 and March 9.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 15 | Apr 20 | Apr 23 | Apr 26 | Apr 30 | May 2 | May 5 | May 8 | May 13 |
| 32°F | Apr 3 | Apr 9 | Apr 12 | Apr 15 | Apr 17 | Apr 21 | Apr 24 | Apr 29 | May 4 |
| 28°F | Mar 22 | Mar 29 | Apr 1 | Apr 4 | Apr 7 | Apr 9 | Apr 13 | Apr 17 | Apr 23 |
| 24°F | Mar 9 | Mar 15 | Mar 19 | Mar 23 | Mar 28 | Mar 31 | Apr 3 | Apr 7 | Apr 13 |
| 20°F | Feb 28 | Mar 6 | Mar 10 | Mar 13 | Mar 17 | Mar 20 | Mar 24 | Mar 29 | Apr 3 |
| 16°F | Feb 21 | Feb 27 | Mar 2 | Mar 5 | Mar 9 | Mar 12 | Mar 15 | Mar 19 | Mar 25 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 20 | Sep 25 | Sep 30 | Oct 4 | Oct 7 | Oct 10 | Oct 14 | Oct 17 | Oct 22 |
| 32°F | Sep 30 | Oct 6 | Oct 12 | Oct 15 | Oct 19 | Oct 21 | Oct 24 | Oct 27 | Oct 31 |
| 28°F | Oct 14 | Oct 21 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 3 | Nov 7 | Nov 12 |
| 24°F | Oct 26 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 14 | Nov 17 | Nov 23 |
| 20°F | Nov 3 | Nov 7 | Nov 11 | Nov 14 | Nov 17 | Nov 20 | Nov 24 | Nov 29 | Dec 5 |
| 16°F | Nov 10 | Nov 16 | Nov 20 | Nov 24 | Nov 28 | Dec 1 | Dec 4 | Dec 8 | Dec 14 |
Freeze probabilities 1991–2020 at Steffenville, MO, 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 63537 →Compare Edina with another place →
Weather by month in Edina
July is the warmest month at Steffenville, MO, averaging 86°F by day and 66°F at night; January is the coldest at 35°F and 18°F. A freezing night is all but certain in every month from November 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 15% of years.
Warmth for growing adds up to 3,593 growing degree days a year (base 50°F), fewer than at 88% of the 158 Missouri stations. 36% of them (1,303) have built up by the end of June, and July adds the most, 794. Precipitation totals 39.5 inches a year, most in May (5.1") and least in January (1.7"); May to September bring 54% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 35 | 18 | 1.7 | 100% | 27 | 2 |
| Feb | 40 | 22 | 1.9 | 100% | 23 | 6 |
| Mar | 52 | 32 | 2.5 | 100% | 16 | 53 |
| Apr | 64 | 42 | 4.0 | 94% | 5 | 173 |
| May | 73 | 53 | 5.1 | 15% | <1 | 409 |
| Jun | 82 | 62 | 4.8 | 0% | 0 | 661 |
| Jul | 86 | 66 | 4.0 | 0% | 0 | 794 |
| Aug | 84 | 64 | 3.9 | 0% | 0 | 741 |
| Sep | 78 | 55 | 3.7 | 11% | <1 | 493 |
| Oct | 66 | 44 | 3.4 | 89% | 3 | 212 |
| Nov | 51 | 33 | 2.6 | 100% | 14 | 46 |
| Dec | 39 | 23 | 1.9 | 100% | 24 | 5 |
Monthly normals 1991–2020 at Steffenville, MO (705 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, Memphis, MO, 20 miles north of Edina, has a last frost 6 days later (April 23), a first frost 2 days earlier (October 17), a season 8 days shorter.
When it snows in Edina, Missouri
The first measurable snow (0.1 inch or more) in Edina usually arrives around December 1, and the last of the season around March 17. Those are the middle dates across the winters of 1991–2020 at Edina, MO, 0.1 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 31 days after the last snow.
Planting calendar for 63537
| When | What to do |
|---|---|
| February 6 – February 20 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 20 – March 6 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 20 – April 3 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 17 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 27 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 5 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 19 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 63537 is 20 miles from Steffenville, MO, which stands at 705 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 63537 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°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.