USDA Hardiness Zone 7b
Frost Dates for 37033 — Centerville, Tennessee
NOAA 1991–2020 normals from Centerville Water Pl, TN (660 ft), 4 miles east.
Updated
In Centerville, the last spring frost (32°F) is around April 11 in half of years and has passed by April 27 in nine years out of ten. The first fall frost comes around October 24, as early as October 12 one year in ten, leaving a typical freeze-free season of 196 days (NOAA, Centerville Water Pl, TN).
- Last spring frost
- April 11
- First fall frost
- October 24
- Growing season
- 196 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- January 17
- Last snow
- February 16
- Winters with snow
- 95%
- Snow per year
- —
median, 1991–2020
median, 1991–2020
19 of 20 observed
NOAA normal
Frost risk by date in Centerville
Half of springs at Centerville Water Pl, TN see their last 32°F night by April 11; only one in ten is past it by March 22, and one in ten still has one after April 27. Planting tender crops after April 18 leaves a 30% risk of a frost on them, after April 22 20%, and after April 27 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 144 Tennessee stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 24 in half of years, as early as October 12 one year in ten, and holds off past November 5 one year in ten. A hard freeze of 28°F follows 11 days later, around November 4; in spring the one-in-ten date for 28°F is April 16, 11 days before the 32°F one. The freeze-free season lasts 196 days in a typical year, shorter than at 69% of the 144 Tennessee stations; it reaches 219 days one year in ten and falls short of 176 one year in ten. On average 87 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 12 days longer, to about April 23, and return around October 16. Severe cold of 16°F or below comes in 99% of winters, usually between December 19 and February 15.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 5 | Apr 11 | Apr 16 | Apr 20 | Apr 23 | Apr 27 | Apr 30 | May 4 | May 10 |
| 32°F | Mar 22 | Mar 30 | Apr 3 | Apr 7 | Apr 11 | Apr 15 | Apr 18 | Apr 22 | Apr 27 |
| 28°F | Mar 11 | Mar 18 | Mar 22 | Mar 27 | Mar 31 | Apr 3 | Apr 7 | Apr 11 | Apr 16 |
| 24°F | Feb 23 | Mar 1 | Mar 7 | Mar 13 | Mar 17 | Mar 21 | Mar 26 | Mar 31 | Apr 6 |
| 20°F | Feb 10 | Feb 16 | Feb 22 | Feb 27 | Mar 1 | Mar 5 | Mar 11 | Mar 17 | Mar 23 |
| 16°F99% of yrs | Jan 22 | Jan 31 | Feb 5 | Feb 10 | Feb 15 | Feb 22 | Feb 27 | Mar 2 | Mar 11 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 4 | Oct 8 | Oct 11 | Oct 13 | Oct 16 | Oct 18 | Oct 21 | Oct 24 | Oct 27 |
| 32°F | Oct 12 | Oct 16 | Oct 19 | Oct 21 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 5 |
| 28°F | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 10 | Nov 14 | Nov 21 |
| 24°F | Nov 1 | Nov 6 | Nov 10 | Nov 13 | Nov 17 | Nov 20 | Nov 25 | Nov 30 | Dec 4 |
| 20°F | Nov 11 | Nov 17 | Nov 23 | Nov 28 | Dec 1 | Dec 5 | Dec 9 | Dec 15 | Dec 23 |
| 16°F99% of yrs | Nov 26 | Dec 4 | Dec 8 | Dec 13 | Dec 19 | Dec 25 | Dec 30 | Jan 3 | Jan 14 |
Freeze probabilities 1991–2020 at Centerville Water Pl, TN, 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 37033 →Compare Centerville with another place →
Weather by month in Centerville
July is the warmest month at Centerville Water Pl, TN, averaging 90°F by day and 67°F at night; January is the coldest at 50°F and 28°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 73% of years.
Warmth for growing adds up to 4,655 growing degree days a year (base 50°F), more than at 70% of the 144 Tennessee stations. 39% of them (1,826) have built up by the end of June, and July adds the most, 882. Precipitation totals 53.3 inches a year, most in May (5.5") and least in August (2.9"); May to September bring 40% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 50 | 28 | 4.1 | 100% | 20 | 20 |
| Feb | 55 | 30 | 4.6 | 100% | 17 | 36 |
| Mar | 65 | 38 | 5.2 | 99% | 12 | 137 |
| Apr | 75 | 46 | 5.2 | 73% | 4 | 337 |
| May | 81 | 55 | 5.5 | 5% | <1 | 552 |
| Jun | 86 | 64 | 4.3 | 0% | 0 | 744 |
| Jul | 90 | 67 | 4.5 | 0% | 0 | 882 |
| Aug | 89 | 66 | 2.9 | 0% | 0 | 845 |
| Sep | 83 | 59 | 4.3 | 0% | 0 | 630 |
| Oct | 73 | 47 | 3.4 | 78% | 4 | 323 |
| Nov | 62 | 37 | 3.8 | 100% | 11 | 113 |
| Dec | 53 | 31 | 5.5 | 100% | 20 | 37 |
Monthly normals 1991–2020 at Centerville Water Pl, TN (660 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, Centerville 4NE, TN, 6 miles northeast of Centerville, has the same 50% last-frost date, a first frost 3 days later (October 27), a season 3 days longer.
When it snows in Centerville, Tennessee
The first measurable snow (0.1 inch or more) in Centerville usually arrives around January 17, and the last of the season around February 16. Those are the middle dates across the winters of 1991–2020 at Centerville 4NE, TN, 6 miles away: half of years saw snow earlier, half later. Snow fell in 95% of those winters. The last 32°F night of spring typically comes 54 days after the last snow.
Planting calendar for 37033
| When | What to do |
|---|---|
| January 31 – February 14 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 14 – February 28 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 14 – March 28 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 11 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 1 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 10 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 24 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 37033 is 4 miles from Centerville Water Pl, TN, which stands at 660 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 37033 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across Tennessee →
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.