Frost dates / New Mexico / Roswell

Frost dates in Roswell, NM

The station on this page is ROSWELL CLIMAT, NM US (USC00297605), 0.9 miles from the city point. Population in the Census 2024 estimate is 47,176.

Zone 7bUSDA average annual extreme minimum 5°F to 10°F, from ZIP 88230 (13.1 miles from the city point used on this page).

Median last 32°F is April 13. Median first 32°F is October 30. The 50% growing-season length is 197 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 31	Earlier date. A last 32°F on or after this day is common.
50%	April 13	Median.
10%	April 28	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 16	Earlier date. A first 32°F on or before this day is uncommon.
50%	October 30	Median.
90%	November 11	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%	216
50%	197
90%	177

28°F threshold

	10%	50%	90%
Last, on or after	April 16	March 31	March 11
First, on or before	October 25	November 6	November 20
Season at least	242 days	221 days	200 days

36°F threshold

	10%	50%	90%
Last, on or after	May 7	April 25	April 12
First, on or before	October 8	October 21	November 3
Season at least	195 days	177 days	159 days

Station ROSWELL CLIMAT, NM US (USC00297605). Completeness flag R, 14 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 1098.8 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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Roswell, NM

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

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

New Mexico. Nearest qualified station: ROSWELL CLIMAT, NM US (USC00297605), 0.9 miles. Median last 32°F April 13. Median first 32°F October 30. The 50% growing-season length is 197 days.

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32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	April 28	April 13	March 31
First 32°F on or before	October 16	October 30	November 11

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 New Mexico 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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