When is the last frost in Jackson, MS?

The average (50% probability) last spring frost in Jackson is March 14, based on NOAA 1991–2020 normals. A 1-in-10 risk remains until April 2.

When is the first frost in Jackson?

The average first fall frost in Jackson is November 14, with a growing season of about 245 days.

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Jackson, Mississippi frost dates

Average last spring frost: March 14. Average first fall frost: November 14. That gives a growing season of about 245 days. For frost-tender plants, a safer planting date is April 2, after which a freeze happens in only 1 year in 10.

Last frost (50%)

Mar 14

1-in-10 risk after Apr 2

First frost (50%)

Nov 14

1-in-10 risk before Oct 31

Growing season

245 days

median frost-free days

Hard freeze (28°F)

Feb 28

median last 28°F in spring

Frost risk by date

Chance of frost	Spring: frost after	Fall: frost before
90%	February 22	December 4
70%	March 6	November 22
50%	March 14	November 14
30%	March 22	November 7
10%	April 2	October 31

Read the spring column like this: there is a 10% chance of a 32°F freeze after April 2. These are NOAA probabilities for the Jackson International Airport weather station (USW00003940, elevation 90 m), 1991–2020.

Jackson vegetable planting calendar

Dates count from the 50% last-frost date (March 14). For tomatoes, peppers and other frost-tender crops, waiting until the 10% date (Apr 2) is the cautious choice.

Crop	Start seeds indoors	Plant out
Beans	Feb 21	Mar 21 (usually sown directly in the garden)
Broccoli	Jan 3	Feb 14
Brussels sprouts	Jan 3	Feb 14
Cabbage	Dec 27	Feb 7
Cauliflower	Jan 17	Feb 28
Sweet corn	Feb 14	Mar 14 (usually sown directly in the garden)
Cucumbers	Feb 28	Mar 21
Kale	Dec 27	Feb 7
Leeks	Nov 29	Feb 7
Lettuce	Jan 24	Feb 28
Melons	Mar 7	Mar 28
Onions	Nov 22	Jan 31 (from seed; sets and transplants go out at the same time)
Peas	Jan 17	Feb 14 (usually sown directly in the garden)
Peppers	Jan 31	Mar 28
Squash	Mar 7	Mar 28
Tomatoes	Jan 17	Mar 14

Offsets from Oregon State University Extension's seed-starting table. "Plant out" means transplant, or sow directly for crops usually grown from seed.

Fall frost and season extension

The first fall freeze usually arrives around November 14. There's a 1-in-10 chance it comes before October 31. Harvest tender crops such as basil, tomatoes, peppers and squash before then, or cover them on cold nights. Cool-season crops like kale, cabbage and Brussels sprouts handle light frost, and often taste sweeter after it. A hard freeze (28°F) typically comes around November 28.

Nearby cities

City	Last frost (50%)	First frost (50%)	Distance
Baton Rouge, LA	Feb 25	Nov 26	~222 km
New Orleans, LA	Jan 30	Dec 31	~259 km
Little Rock, AR	Mar 21	Nov 10	~335 km
Birmingham, AL	Mar 21	Nov 11	~342 km
Montgomery, AL	Mar 13	Nov 13	~344 km
Shreveport, LA	Mar 9	Nov 18	~353 km

More: all Mississippi frost dates