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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

50% probability

First fall frost
October 24

50% probability

Growing season
196 days

freeze-free, 50%

Hardiness zone
7b

5 to 10°F (-15.0 to -12.2°C) coldest night

First snow
January 17

median, 1991–2020

Last snow
February 16

median, 1991–2020

Winters with snow
95%

19 of 20 observed

Snow per year
—

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.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FApr 5Apr 11Apr 16Apr 20Apr 23Apr 27Apr 30May 4May 10
32°FMar 22Mar 30Apr 3Apr 7Apr 11Apr 15Apr 18Apr 22Apr 27
28°FMar 11Mar 18Mar 22Mar 27Mar 31Apr 3Apr 7Apr 11Apr 16
24°FFeb 23Mar 1Mar 7Mar 13Mar 17Mar 21Mar 26Mar 31Apr 6
20°FFeb 10Feb 16Feb 22Feb 27Mar 1Mar 5Mar 11Mar 17Mar 23
16°F99% of yrsJan 22Jan 31Feb 5Feb 10Feb 15Feb 22Feb 27Mar 2Mar 11
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 4Oct 8Oct 11Oct 13Oct 16Oct 18Oct 21Oct 24Oct 27
32°FOct 12Oct 16Oct 19Oct 21Oct 24Oct 26Oct 29Nov 1Nov 5
28°FOct 22Oct 26Oct 30Nov 1Nov 4Nov 6Nov 10Nov 14Nov 21
24°FNov 1Nov 6Nov 10Nov 13Nov 17Nov 20Nov 25Nov 30Dec 4
20°FNov 11Nov 17Nov 23Nov 28Dec 1Dec 5Dec 9Dec 15Dec 23
16°F99% of yrsNov 26Dec 4Dec 8Dec 13Dec 19Dec 25Dec 30Jan 3Jan 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.

Monthly normals 1991–2020 at Centerville Water Pl, TN
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan50284.1100%2020
Feb55304.6100%1736
Mar65385.299%12137
Apr75465.273%4337
May81555.55%<1552
Jun86644.30%0744
Jul90674.50%0882
Aug89662.90%0845
Sep83594.30%0630
Oct73473.478%4323
Nov62373.8100%11113
Dec53315.5100%2037

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.

Frost dates for 37098 (Lyles) →

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

What to do and when, from the 50% frost dates for Centerville, Tennessee
WhenWhat to do
January 31 – February 14Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 14 – February 28Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 14 – March 28Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 11 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 1Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 10Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 24 onwardPlant 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.

Other zone 7b places in Tennessee