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

Jamesburg, New Jersey Weather

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

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

Jamesburg, NJ
Saturday, July 4 at 10:39 PM
84
°
Partly Cloudy
Feels like
88°
Humidity
61%
Wind
9 mph
Sunrise
1:33 AM
Sunset
4:31 PM
Jamesburg, NJ
Hour by hour · 24h
24-Hour ForecastJamesburg, NJ: 24-hour forecast. Temperatures range from 74 to 87 degrees Fahrenheit with a 59% chance of precipitation at 11 PM.
L 74°H 87°
Jamesburg, NJ
7-day forecast
  1. Today
    Jul 4
    Drizzle
    59%
    0.03″
    98°73°
  2. Sunday
    Jul 5
    Heavy Rain
    59%
    3.4″
    87°73°-11°
  3. Monday
    Jul 6
    Heavy Rain
    93%
    2.0″
    78°71°-9°
  4. Tuesday
    Jul 7
    Heavy Drizzle
    91%
    0.01″
    71°65°-7°
  5. Wednesday
    Jul 8
    Overcast
    23%
    81°64°+10°
  6. Thursday
    Jul 9
    Light Drizzle
    11%
    85°66°+4°
  7. Friday
    Jul 10
    Drizzle
    34%
    0.09″
    89°72°+4°
Jamesburg, NJ
Anemometer · 24h winds · from true
NESW
From · True
WNW
287° · veering 61°
Direction
WNW
287°
Sustained
9
mph
Gust
23
mph
Peak 24h
23
avg 6
Beaufort · 3 · GENTLE BRZ
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 23
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 329SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 61° from the wnw.
Jamesburg, NJ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1010.1
+1.3 mb in 3h · rising · 29.83 inHg
Now
1010.1
mb
3h
+1.3
mb
12h
-2.0
mb
24h
-2.6
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10071011
1000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1011.11007.21008.5
−24h−18h−12h−6hnow
Pressure climbing out of the rain band — clearing edging in.
Jamesburg, NJ
Air quality
89
AQI
Moderate
-19 in 6h

AQI 89 (Moderate), driven by PM2.5. AQI down 19 over the last 6 hours — air quality is improving sharply. PM scrubbed by 3 hours of recent rain — PM2.5 down to 8.1 µg/m³, PM10 to 8.2 µg/m³.

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

PM 2.5DRIVERGood
8.1μg/m³
PM 10Good
8μg/m³
NO₂Good
12μg/m³
OzoneModerate
93μg/m³
UV IndexLow
0.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 44. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.

Present
AQI 44
UV peak
0.0 at 1 PM
Sky at peak
overcast
Projected peak
AQI 5

PM × Wind × Precip

PM scrubbed by 3 hours of recent rain — PM2.5 down to 8.1 µg/m³, PM10 to 8.2 µg/m³.

PM2.5/PM10
0.99
Wind
light
Recent rain
3h in last 6h
Pattern
washed out
Jamesburg, NJ
Sky cover · visibility · 24h
Cloud cover
59%
PARTLY CLOUDY
100%0%−24h−18h−12h−6hnow

Visibility
66.1mi
UNLIMITED
120 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
02:39 UTC · Jamesburg, 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
02:39 UTC · Jamesburg, NJ · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Jamesburg, NJ
Satellite · infrared · animated
Jamesburg, NJ
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Jamesburg, NJ
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:01 AM
Sunrise
1:33 AM
Daylight
14h 58m
Sunset
4:31 PM
Civil dusk
9:05 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Jamesburg, NJ
The moon
Waning Gibbous
77% illuminated
Moonrise
11:15 PM
Moonset
11:07 AM
In sign
♓︎ Pisces
Jamesburg, NJ
Microseason
Jul 1–5

Cicadas claim the afternoon

fish
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Jamesburg at a glance

  • Today vs. normal: 13°F above the seasonal normal for this latitude
  • Last frost: April 18 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Jamesburg

  1. Sat98°73°59%
  2. Sun87°73°59%
  3. Mon78°71°93%
  4. Tue71°65°91%
  5. Wed81°64°23%
  6. Thu85°66°11%
  7. Fri89°72°34%
  8. Sat88°67°34%
  9. Sun78°65°25%
  10. Mon87°65°24%
  11. Tue90°65°18%
  12. Wed93°68°34%
  13. Thu88°70°34%
  14. Fri87°71°30%
  15. Sat83°69°26%
  16. Sun96°75°36%

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 — Jamesburg

SPC has placed Jamesburg in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWSLGTSlight Risk
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

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.

ZIP codes in Jamesburg

  • 08831

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.