blissgarden.

When to plant in Riviera Beach, FL

USDA Zone 10b

Here are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Riviera Beach, Florida — all computed from Riviera Beach's nearest NOAA weather station.

With only about -6 frost-free days, Riviera Beach has a short season — start heat-lovers indoors early, favor quick-maturing varieties, and use row cover to stretch both ends. In zone 10b, frost is a minor factor for Riviera Beach — most perennials thrive, and annual vegetables can go out early and stay late.

Station · PALM BEACH GARDENS · 8.8 km
Last spring frost
January 21
50% chance · 32°F
First fall frost
January 15
50% chance · 32°F
Growing season
-6 days
frost-free
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Frost calendar for Riviera BeachA year-band from January to December for Riviera Beach: Riviera Beach is effectively frost-free at 32°F — no distinct frost season.
Riviera Beach is effectively frost-free at 32°F — no distinct frost season.

Frost probability

PALM BEACH GARDENS · 1991–2020

The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Riviera Beach’s own odds, recorded at PALM BEACH GARDENS.

Frost-probability curves for Riviera BeachProbability of the last spring frost and first fall frost by date at 32°F. The last spring frost is most likely around January 21 and the first fall frost around January 15, where a 32°F freeze is rare enough that there is effectively no distinct frost season.
Last spring frostFirst fall frostbold = 32°F · thin = 28°F / 36°F · dot = 50% date · band = 10–90% window
ThresholdSPRING 10%SPRING 50%SPRING 90%FALL 10%FALL 50%FALL 90%
36°FFeb 22Jan 31Jan 1Dec 25Jan 17Feb 13
32°FFeb 12Jan 21Dec 29Dec 25Jan 15Feb 9

Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.

What to plant now

TODAY · JULY 19

Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.

Add the next planting windows to your calendar (.ics) ↓

Full-year planting calendar

Start indoorsTransplantDirect sowFall sow

Each bar is the exact window to take a planting action in Riviera Beach, drawn to the day from the local frost dates. The dashed line is today.

Nearby weather stations

3 within 34 km · complete 32°F normals

When stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.

PALM BEACH GARDENS
Primary
9 km · 6 m elevation
SPRING
Jan 21
FALL
Jan 15
JUNO BEACH
9 km · 2 m elevation
SPRING
Jan 26
FALL
Jan 16
LOXAHATCHEE NWR
34 km · 6 m elevation
SPRING
Jan 22
FALL
Jan 17

Riviera Beach planting FAQ

When is the last spring frost in Riviera Beach, FL?

Riviera Beach's average last spring frost falls near January 21 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.

When is the first fall frost in Riviera Beach, FL?

Expect Riviera Beach's first fall frost near January 15 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.

What hardiness zone is Riviera Beach in?

Riviera Beach is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.

How long is the growing season in Riviera Beach?

Riviera Beach has about -6 frost-free days — a short growing season — between the average last spring frost (January 21) and first fall frost (January 15).

When should I plant tomatoes in Riviera Beach?

For Riviera Beach, sow tomatoes indoors about November 26–December 10 and move the seedlings out around January 28, after the last spring frost.

Planting reminders

Never miss a window in Riviera Beach

An email when it’s time to start seeds, transplant, and sow — timed to Riviera Beach’s frost dates. Double opt-in, one-click unsubscribe, no spam.

Nearby cities

8 within reach

Frost dates recorded at PALM BEACH GARDENS, 9 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.

Cite this page
BlissGarden. "When to Plant in Riviera Beach, FL — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00086764. Retrieved from https://blissgarden.com/florida/riviera-beach.