Frost dates / Massachusetts / Framingham

Frost dates in Framingham, MA

The station on this page is NATICK, MA US (USC00195175), 5 miles from the city point. Population in the Census 2024 estimate is 73,361.

Zone 6bUSDA average annual extreme minimum -5°F to 0°F, from ZIP 01701 (0.9 miles from the city point used on this page).

Median last 32°F is April 26. Median first 32°F is October 12. The 50% growing-season length is 169 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%	April 14	Earlier date. A last 32°F on or after this day is common.
50%	April 26	Median.
10%	May 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 1	Earlier date. A first 32°F on or before this day is uncommon.
50%	October 12	Median.
90%	October 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%	186
50%	169
90%	152

28°F threshold

	10%	50%	90%
Last, on or after	April 24	April 13	April 2
First, on or before	October 10	October 24	November 6
Season at least	210 days	192 days	174 days

36°F threshold

	10%	50%	90%
Last, on or after	May 19	May 7	April 26
First, on or before	September 26	October 4	October 15
Season at least	162 days	149 days	133 days

Station NATICK, MA US (USC00195175). Completeness flag R, 12 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 54.9 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Check a crop against this station

Framingham, MA

Zone 6bAverage annual extreme minimum -5°F to 0°F

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

Massachusetts. Nearest qualified station: NATICK, MA US (USC00195175), 5 miles. Median last 32°F April 26. Median first 32°F October 12. The 50% growing-season length is 169 days.

Open the ZIP page

32°F probabilities at this station

	10%	50%	90%
Last 32°F on or after	May 9	April 26	April 14
First 32°F on or before	October 1	October 12	October 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.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

Planting calendar

Frost dates for Massachusetts 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.

Date checks use your device’s calendar and appear after the page loads.