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USDA Hardiness Zone 7b

Frost Dates for 72650 — Marshall, Arkansas

NOAA 1991–2020 normals from Marshall, AR (951 ft), 1 miles northeast.

Updated

In Marshall, 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 26, as early as October 10 one year in ten, leaving a typical freeze-free season of 197 days (NOAA, Marshall, AR).

Last spring frost
April 11

50% probability

First fall frost
October 26

50% probability

Growing season
197 days

freeze-free, 50%

Hardiness zone
7b

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

First snow
January 6

median, 1991–2020

Last snow
February 15

median, 1991–2020

Winters with snow
91%

21 of 23 observed

Snow per year
4"

NOAA normal

Frost risk by date in Marshall

Half of springs at Marshall, AR see their last 32°F night by April 11; only one in ten is past it by March 25, 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 65% of the 105 Arkansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 26 in half of years, as early as October 10 one year in ten, and holds off past November 11 one year in ten. A hard freeze of 28°F follows 11 days later, around November 6; 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 197 days in a typical year, shorter than at 93% of the 105 Arkansas stations; it reaches 222 days one year in ten and falls short of 175 one year in ten. On average 83 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 24, and return around October 16. Severe cold of 16°F or below comes every winter, usually between December 18 and February 24.

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

Freeze probabilities 1991–2020 at Marshall, AR, 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 72650 →Compare Marshall with another place →

Weather by month in Marshall

July is the warmest month at Marshall, AR, averaging 89°F by day and 68°F at night; January is the coldest at 47°F and 26°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 78% of years.

Warmth for growing adds up to 4,412 growing degree days a year (base 50°F), fewer than at 88% of the 105 Arkansas stations. 37% of them (1,638) have built up by the end of June, and July adds the most, 880. Precipitation totals 47.6 inches a year, most in April (5.3") and least in January (3.2"); May to September bring 40% of it.

Monthly normals 1991–2020 at Marshall, AR
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan47263.2100%2318
Feb52293.3100%1732
Mar61374.898%9107
Apr70455.378%2262
May77555.15%0496
Jun85633.70%0723
Jul89683.50%0880
Aug89663.20%0852
Sep82583.72%0599
Oct72473.864%2313
Nov60384.499%10102
Dec50293.6100%2028

Monthly normals 1991–2020 at Marshall, AR (951 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, Dennard 10 WSW, AR, 12 miles south of Marshall and 789 feet higher, has a last frost 7 days earlier (April 4), a first frost 7 days later (November 2), a season 15 days longer.

Frost dates for 72031 (Clinton) →

When it snows in Marshall, Arkansas

The first measurable snow (0.1 inch or more) in Marshall usually arrives around January 6, and the last of the season around February 15. Those are the middle dates across the winters of 1991–2020 at Marshall, AR, 1.1 miles away: half of years saw snow earlier, half later. Snow fell in 91% of those winters. The last 32°F night of spring typically comes 55 days after the last snow.

Planting calendar for 72650

What to do and when, from the 50% frost dates for Marshall, Arkansas
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 3Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 12Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 26 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 72650 is 1 mile from Marshall, AR, which stands at 951 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 72650 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 Arkansas →

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 Arkansas