Weather StoryAlmanac, microseasons, and the day's weather story.

Riverdale, New Jersey Weather

Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →

Riverdale weather forecast — hour by hour, 7-day outlook, NOAA radar

Riverdale, NJ
Sunday, July 5 at 3:44 AM
72
°
Overcast
Feels like
78°
Humidity
93%
Wind
2 mph
Sunrise
1:31 AM
Sunset
4:32 PM
Riverdale, NJ
Hour by hour · 24h
24-Hour ForecastRiverdale, NJ: 24-hour forecast. Temperatures range from 70 to 87 degrees Fahrenheit with a 72% chance of precipitation at 1 AM.
L 70°H 87°
Riverdale, NJ
7-day forecast
  1. Today
    Jul 5
    Rain
    61%
    0.31″
    87°70°—
  2. Monday
    Jul 6
    Heavy Rain
    92%
    1.4″
    72°63°-15°
  3. Tuesday
    Jul 7
    Drizzle
    81%
    0.02″
    69°62°-3°
  4. Wednesday
    Jul 8
    Overcast
    20%
    —
    78°60°+9°
  5. Thursday
    Jul 9
    Light Drizzle
    18%
    —
    81°62°+3°
  6. Friday
    Jul 10
    Drizzle
    46%
    —
    85°67°+4°
  7. Saturday
    Jul 11
    Overcast
    26%
    —
    85°59°0°
Riverdale, NJ
Next 24 hours · Mild now
HOT 90°66°78°90°12a6a12p6pnow 72°high 87°low 70°PRECIP %
Riverdale, NJ
Anemometer · 24h winds · from true
NESW
From · True
N
000° · backing 99°
Direction
N
000°
Sustained
2
mph
Gust
5
mph
Peak 24h
31
avg 6
Beaufort · 1 · LIGHT AIR
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 31 @ 8:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 166SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Riverdale, NJ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
998.1
-2.4 mb in 3h · falling rapidly · 29.47 inHg
Now
998.1
mb
3h
-2.4
mb
12h
+0.1
mb
24h
0.0
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 996–1001
9909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1001.1996.4998.7
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Riverdale, NJ
Air quality
38
AQI
Good
↓-30 in 6h

AQI 38 (Good), driven by Ozone. AQI down 30 over the last 6 hours — air quality is improving sharply. Ozone at AQI 33. Overcast through the UV peak window (cloud cover ~81%) — afternoon ozone should stay flat.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
5.4μg/m³
PM 10Good
6μg/m³
NO₂Good
9μg/m³
OzoneDRIVERModerate
69μg/m³
UV IndexLow
0.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 33. Overcast through the UV peak window (cloud cover ~81%) — afternoon ozone should stay flat.

Present
AQI 33
UV peak
3.3 at 1 PM
Sky at peak
overcast
Projected peak
AQI 7

PM × Wind × Precip

PM2.5 at 5.4 µg/m³ (AQI 30) with a 0.96 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.96
Wind
calm
Recent rain
0h in last 6h
Pattern
stagnant smoke

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³640
Riverdale, NJ
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow
Visibility
27.7mi
UNLIMITED
93 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
07:44 UTC · Riverdale, NJ · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
07:44 UTC · Riverdale, NJ · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Riverdale, NJ
Satellite · infrared · animated
Riverdale, NJ
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Riverdale, NJ
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:58 AM
Sunrise
1:31 AM
Daylight
15h 01m
Sunset
4:32 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Riverdale, NJ
The moon
Waning Gibbous
75% illuminated
Moonrise
11:15 PM
Moonset
11:06 AM
In sign
♓︎ Pisces
Riverdale, NJ
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Riverdale at a glance

  • Today vs. normal: 72°F — typical for the season
  • Last frost: April 22 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 07457

15-Day Forecast — Riverdale

  1. Sun86°70°61%
  2. Mon72°63°92%
  3. Tue69°62°81%
  4. Wed78°60°20%
  5. Thu81°62°18%
  6. Fri85°67°46%
  7. Sat85°59°26%
  8. Sun80°61°21%
  9. Mon71°58°18%
  10. Tue85°59°17%
  11. Wed84°63°23%
  12. Thu90°64°39%
  13. Fri81°67°26%
  14. Sat82°64°42%
  15. Sun90°67°37%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Riverdale

SPC has placed Riverdale in the Marginal Risk category for severe thunderstorms today.

  • TODAYMRGLMarginal Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3NONENo severe risk

Isolated severe storms possible. Limited threat for hail or damaging wind.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

Riverdale peaks at about 75°F in July and bottoms near 28°F in January; December brings the heaviest rain (4.3 inches) and February the least (3.0 inches).

MonthMean tempPrecipRainy days
January28°3.6″14
February30°3.0″13
March38°3.7″16
April50°4.2″17
May59°4.2″18
June68°4.3″17
July75°4.0″17
August74°4.3″17
September67°3.9″14
October56°3.5″12
November43°4.1″13
December33°4.3″14

Regional context

Per NOAA NCEI 1991-2020 normals, Riverdale runs from a 28°F January mean to 75°F in July, a 47°F seasonal spread, with near 47 inches of precipitation across about 183 wet days.

Rainfall in Riverdale stays even across the calendar: December tops out at 4.3 inches over 13.6 rainy days, and February still logs 3.0 inches across 13.3 — a narrow range for Riverdale. That even rhythm groups Riverdale with places like Pompton Lakes, NJ, Pompton Plains, NJ and Butler, NJ.

Once Riverdale passes mid-April, overnight freezes fade and kale, peas, spinach, and parsnips can be sown. Riverdale's heat-lovers — tomatoes, peppers, squash — hold off until Riverdale's frost risk clears, 10-14 days on. Frost returns to Riverdale near mid-November, ending the tender-crop season. A creek-bottom lot in Riverdale can lag Riverdale's last frost 7-10 days behind a south slope.

Similar climates: Pompton Lakes, NJ, Pompton Plains, NJ, Butler, NJ, Pines Lake, NJ, Bloomingdale, NJ.

Frequently asked

When does it freeze in Riverdale?
In Riverdale, expect the last spring frost near mid-April; Riverdale's first autumn frost comes around mid-November.
What is the rainy season in Riverdale?
Riverdale sees its heaviest rain in December (around 4.3 inches), part of roughly 47 inches a year.
What is the warmest month in Riverdale?
The warmest stretch in Riverdale comes in July, around 75°F on average.
What is the coldest month in Riverdale?
On average January is the chilliest month in Riverdale, about 28°F.
When can I start a vegetable garden in Riverdale?
Frost-hardy sowings begin at mid-April in Riverdale; warm-season starts follow two weeks on.
How many rainy days does Riverdale get?
Riverdale records around 183 days of measurable precipitation annually.
What hardiness zone is Riverdale?
Riverdale sits in the USDA zone set by January lows near 28°F; the USDA ZIP tool gives the band.
What is the 10-day forecast for Riverdale?
Riverdale's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Riverdale?
See this week's day-by-day rain chances for Riverdale in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Riverdale?
Current conditions for Riverdale and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Riverdale forecast updated?
The Riverdale forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Riverdale?
Today's sunrise and sunset times for Riverdale are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Riverdale?
The next few days in Riverdale's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Riverdale, New Jersey has a warm-summer humid continental climate: January averages roughly 28°F, July about 75°F, 47°F between them.

Yearly precipitation in Riverdale totals around 47 inches, spread over about 183 days of rain or snow.

At 41.0°N, Riverdale's 47°F summer-to-winter swing sets when Riverdale's gardens wake and when frost returns.

All cities in New Jersey →

Paterson, NJ weather →

ZIP codes in Riverdale

  • 07457

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.