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Shaded-relief map of Rio, Florida: rivers, roads, the city limits and where the water drains.
FLORIDA · MARTIN COUNTY

Rio

980 people, 14 ft above sea level in Martin County.

14 ftElevation, city center
980People, 2024 estimate
0 sq miLand area
Sunny 67°
Sunny now Dew point 39° · NW 10 mph · high 67°
City of Rio River Interstate 2 miles
Explore the plate Order a print

The Rio plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Rio

NWS forecast and National Blend of Models · updated 12:00 PM EST
RIGHT NOW St. Lucie County International Airport (KFPR) · 12:53 PM
Sunny
67° Sunny Feels like 67° · high of 67° near 1 PM
WindNW 10 mphno gusts
Humidity36%falling to 49% this afternoon
Pressure30.01 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 39° · Dry63° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Tuesday, about 8 AMin about 67 hours · 37% chance · rain
LIKELY AMOUNT0–0.5 inmost likely 0.07; 1 in 10 over 0.9
LAST RAINNov. 120.27 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Martin County
NWS Melbourne and the Storm Prediction Center · checked 1:15 PM
SUN & MOON
↑ 6:40 AM5:30 PM ↓
10 h 49 m of daylight, 1 minute less than yesterday
Waxing crescent, 24% lit. Next full moon: Nov. 24.
AIR & POLLEN
35
GOODAir quality index · ozone
Tomorrow: None, good. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
partly cloudy day
partly cloudy day
mostly clear night
clear night
clear night
clear night
clear day
clear day
clear day
clear day
clear night
mostly clear night
mostly clear night
mostly clear night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
rain
rain
TEMPERATURE °F
67°
56°
74°
66°
75°
69°
CHANCE OF RAIN
37% · 0.00 in Tuesday morning 50%
WIND, MPH
12
9
7
7
8
8
8
9
11
9
7
6
7
8
10
13
15
14
12
12
12
12
12
13
HOW IT FEELS · DEW POINT
Dry: dew points 47 to 50° ↑ Humid air returns More humid: 63° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 79° / 61°
SAT Nov. 14 Partly cloudy Partly cloudy
67° 54°
0% rain — NNW 11 A
SUN Nov. 15 Sunny; warmer Sunny; warmer
76° 63°
0% rain — NNE 9 B
MON Nov. 16 Partly cloudy Partly cloudy
77° 66°
20% rain — ENE 13, gusts 25 B
TUE Nov. 17 Chance of showers Chance of showers
78° 66°
50% rain up to 0.5″ ENE 13 B
WED Nov. 18 Storms likely Storms likely
78° 67°
80% rain 0.1–1.2″ ENE 15, gusts 28 B
THU Nov. 19 Showers likely Showers likely
80° 69°
60% rain 0.01–0.6″ NE 14, gusts 26 B
FRI Nov. 20 Chance of showers Chance of showers
80° 69°
50% rain up to 0.5″ NE 13, gusts 25 A
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Rio about 5,000 feet above the ground was over a point about 390 miles to the south three days ago, about 530 miles back along its path. It rose from near the ground on the way. Near the ground the air came from a point about 380 miles to the south; at 10,000 feet, from the Caribbean. It feels humid. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

THIS WEEK IN 2015 Nov. 11, 2015

The hottest this week has been

90° on Nov. 11, 2015, the hottest reading for this week of the year since 1935. Next is 89° in 1948.

89°
90°
19482015
Source: NOAA RCC-ACIS, the Stuart record since 1935.
MILE2
THE GROUND

What Rio stands on

Rio’s center stands about 14 ft above sea level. Within three miles the land runs from 0 ft to 40 ft, a difference of 40 ft: nearly flat ground. Open water lies within three miles.

The section below crosses 3 rock units mapped at the surface.

Rio, cut in half from south to north

A section south to north, 24 miles through the town center
0 ft RIO14 ftStuart20 ftJensen Beach20 ftIndian Riversea level ← SN →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Anastasia Formation

Sand, limestone. Age: Pleistocene, less than 2.6 million years old. About 10 mi of the line.

Beach ridge and dune

Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 5 mi of the line.

Holocene sediments

Sand. Age: Holocene, less than 12,000 years old. About 0.6 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.

MILE3
THE WATER

Where Rio’s rain goes

A raindrop that lands in Rio reaches the Atlantic Ocean by way of the Saint Lucie: about 6 river miles.

THE WAY DOWN, TO SCALE
Rio≈ 6 mi · the Atlantic Ocean
FROM THE CENTER OF RIO ≈ 6 mi to the Atlantic Ocean Saint Lucie

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rio; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Rio’s year

1991–2020 normals · records since 1935 · Stuart

Rio has a tropical rainforest climate. Summer afternoons average 91° in July; winter nights fall to about 56° in January. About 63 inches of rain fall in a normal year.

74°56°76°59°78°61°82°67°86°71°89°74°91°76°91°76°89°75°85°72°80°65°76°60° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY RIO 62.7 in rain a year
Normal high to low, by month Record high to low, by day Rain by month
July, average91° / 76°high / low, the warmest month
January, average74° / 56°high / low, the coldest month
Rain a year62.7 inwettest months: August and September
Hottest on record105°FJuly 21, 1942
Coldest on record23°FJanuary 22, 1985
Wettest day on record11.5 inAugust 2, 2001
Climate typeTropical rainforestKöppen Af

AROUND THE RING

1Highs of 90° and upJune 17 to Sept. 7; normal highs reach 90°
2Wettest stretchAugust through October: 23.2 of the year’s 62.7 inches
NOVEMBER 14 IN THE RECORD

On November 14 Rio normally reaches 80° and falls to 65°. The record high is 88°, in 1948; the record low 43°, in 1975. The most rain on this date, 2.75 in, fell in 1954.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high74°76°78°82°86°89°91°91°89°85°80°76°
Normal low56°59°61°67°71°74°76°76°75°72°65°60°
Rain, inches3.012.613.763.565.667.446.088.498.286.464.163.21
Record high89° (1991)93° (1944)93° (1977)98° (1945)98° (1953)102° (1944)105° (1942)99° (1993)102° (1992)97° (1941)100° (1998)99° (2002)
Record low23° (1985)28° (2026)27° (1980)37° (1971)45° (1971)55° (1980)59° (1971)59° (2008)58° (2008)42° (1989)31° (1950)26° (1962)

Normals 1991–2020 and records since 1935 at Stuart, here. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Rio on the Forecast Network

Neighboring plates

Port St. Lucie FL · 10 MI 10 miles northwest West Palm Beach FL · 33 MI 33 miles south Miami FL · 100 MI 100 miles south Orlando FL · 103 MI 103 miles northwest Tampa FL · 147 MI 147 miles west St. Petersburg FL · 152 MI 152 miles west
FORECASTCITY
Map of Rio, Florida. Explore the plate
FLORIDA · MARTIN

Rio

980 people, 14 ft above sea level in Martin County.

14 ftElevation
980People
0 sq miLand
Sunny 67°
SunnyDew point 39°
1

Today in Rio

NEXT 15 HOURS
Now mostly sunny 67° 0%
4p partly cloudy day 66° 0%
7p mostly clear night 62° 0%
10p clear night 59° 0%
1a clear night 57° 0%
4a clear night 56° 0%
Rain
NEXT RAINTuesday about 8 AM · 37%
→
Sat0%
Partly cloudy Partly cloudy
54
67
A
Sun0%
Sunny; warmer Sunny; warmer
63
76
B
Mon20%
Partly cloudy Partly cloudy
66
77
B
Tue50%
Chance of showers Chance of showers
66
78
B
Wed80%
Storms likely Storms likely
67
78
B
Thu60%
Showers likely Showers likely
69
80
B
Fri50%
Chance of showers Chance of showers
69
80
A
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 2015 · NOV. 11, 2015

90°, the hottest this week of the year has been since 1935.

2

What Rio stands on

Rio’s center stands about 14 ft above sea level. Within three miles the land runs from 0 ft to 40 ft, a difference of 40 ft: nearly flat ground. Open water lies within three miles.

Rio, south to north Rio14 ftIndian Riversea level ← SN → 24 miles through the town center; vertical exaggeration about 122×. Colors: rock at the surface.
Elevation, center14 ft
Within 3 miles0 to 40 ft
Lie of the landNearly flat (40 ft of relief)
5

Rio’s year

Rio has a tropical rainforest climate. Summer afternoons average 91° in July; winter nights fall to about 56° in January. About 63 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 62.7 in
July, average91° / 76° · high / low, the warmest month
January, average74° / 56° · high / low, the coldest month
Rain a year62.7 in · wettest months: August and September
Hottest on record105°F · July 21, 1942
Coldest on record23°F · January 22, 1985
Wettest day on record11.5 in · August 2, 2001
Climate typeTropical rainforest · Köppen Af
1Highs of 90° and up · June 17 to Sept. 7; normal highs reach 90°
2Wettest stretch · August through October: 23.2 of the year’s 62.7 inches
NOVEMBER 14 IN THE RECORD

On November 14 Rio normally reaches 80° and falls to 65°. The record high is 88°, in 1948; the record low 43°, in 1975. The most rain on this date, 2.75 in, fell in 1954.

Normals 1991–2020 and records since 1935 at Stuart, here. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 6 mito the Atlantic OceanSaint Lucie

A raindrop that lands in Rio reaches the Atlantic Ocean by way of the Saint Lucie: about 6 river miles.