Frost dates / Arkansas / Jonesboro

Frost dates in Jonesboro, AR

The station on this page is JONESBORO MUNI AP, AR US (USW00003953), 2 miles from the city point. Population in the Census 2024 estimate is 82,384.

Zone 7bUSDA average annual extreme minimum 5°F to 10°F, from ZIP 72467 (1.6 miles from the city point used on this page).

Median last 32°F is March 23. Median first 32°F is November 9. The 50% growing-season length is 230 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

Probability	Date	How to read it
90%	March 7	Earlier date. A last 32°F on or after this day is common.
50%	March 23	Median.
10%	April 9	Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

Probability	Date	How to read it
10%	October 27	Earlier date. A first 32°F on or before this day is uncommon.
50%	November 9	Median.
90%	November 26	Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this long	Days
10%	254
50%	230
90%	207

28°F threshold

	10%	50%	90%
Last, on or after	March 30	March 10	February 22
First, on or before	November 5	November 20	December 8
Season at least	281 days	254 days	230 days

36°F threshold

	10%	50%	90%
Last, on or after	April 21	April 4	March 18
First, on or before	October 17	October 30	November 11
Season at least	228 days	205 days	186 days

Station JONESBORO MUNI AP, AR US (USW00003953). Completeness flag R, 21 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 79.9 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

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Jonesboro, AR

Zone 7bAverage annual extreme minimum 5°F to 10°F

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Arkansas. Nearest qualified station: JONESBORO MUNI AP, AR US (USW00003953), 2 miles. Median last 32°F March 23. Median first 32°F November 9. The 50% growing-season length is 230 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 9	March 23	March 7
First 32°F on or before	October 27	November 9	November 26

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

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Planting calendar

Frost dates for Arkansas are above. Planting windows appear for states with a cited extension guide. The fall and seed tools use the numbers you enter and the station dates.

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