Frost dates / Missouri / Joplin

Frost dates in Joplin, MO

The station on this page is JOPLIN REGIONAL AIRPORT, MO US (USW00013987), 4.9 miles from the city point. Population in the Census 2024 estimate is 53,605.

Zone 7aUSDA average annual extreme minimum 0°F to 5°F, from ZIP 64801 (2.2 miles from the city point used on this page).

Median last 32°F is April 9. Median first 32°F is October 27. The 50% growing-season length is 200 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 24	Earlier date. A last 32°F on or after this day is common.
50%	April 9	Median.
10%	April 26	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 12	Earlier date. A first 32°F on or before this day is uncommon.
50%	October 27	Median.
90%	November 9	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%	221
50%	200
90%	178

28°F threshold

	10%	50%	90%
Last, on or after	April 16	March 29	March 10
First, on or before	October 21	November 4	November 22
Season at least	244 days	220 days	198 days

36°F threshold

	10%	50%	90%
Last, on or after	May 6	April 21	April 4
First, on or before	October 3	October 18	October 30
Season at least	198 days	178 days	157 days

Station JOPLIN REGIONAL AIRPORT, MO US (USW00013987). Completeness flag S, 30 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 298.7 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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Joplin, MO

Zone 7aAverage annual extreme minimum 0°F to 5°F

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

Missouri. Nearest qualified station: JOPLIN REGIONAL AIRPORT, MO US (USW00013987), 4.9 miles. Median last 32°F April 9. Median first 32°F October 27. The 50% growing-season length is 200 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 26	April 9	March 24
First 32°F on or before	October 12	October 27	November 9

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 Missouri 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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