Metuchen, New Jersey Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Metuchen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain68%0.90″98°73°—
- SundayJul 5Heavy Rain58%0.91″83°72°-15°
- MondayJul 6Thunderstorm94%0.66″75°66°-8°
- TuesdayJul 7Drizzle89%0.02″70°63°-5°
- WednesdayJul 8Overcast26%—80°63°+10°
- ThursdayJul 9Light Drizzle12%—84°65°+4°
- FridayJul 10Light Drizzle35%0.04″90°71°+6°
AQI 106 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 23 in the last 6 hours — air quality is degrading. Ozone at AQI 66. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 66. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 66
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 5.7 µg/m³, PM10 to 5.8 µg/m³.
- PM2.5/PM10
- 0.98
- Wind
- calm
- Recent rain
- 3h in last 6h
- Pattern
- washed out
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:14 PM
- Moonset
- 11:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Metuchen at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 08840
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 — Metuchen
SPC has placed Metuchen in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal 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.
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
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Metuchen's warmest month is July (~77°F mean) and its coldest is January (~30°F). Rainfall peaks in December (4.2 inches) and bottoms out in February (3.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 30° | 3.4″ | 14 |
| February | 32° | 3.0″ | 13 |
| March | 41° | 3.7″ | 15 |
| April | 52° | 3.9″ | 17 |
| May | 61° | 3.7″ | 18 |
| June | 70° | 3.8″ | 17 |
| July | 77° | 3.5″ | 16 |
| August | 75° | 4.0″ | 17 |
| September | 69° | 3.6″ | 13 |
| October | 58° | 3.1″ | 11 |
| November | 44° | 3.7″ | 13 |
| December | 35° | 4.2″ | 13 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, Metuchen sees 30°F Januarys and 77°F Julys, a 46°F range, plus around 43.6 inches of precipitation across 175 days.
Rainfall in Metuchen stays even across the calendar: December tops out at 4.2 inches over 13.3 rainy days, and February still logs 3.0 inches across 12.5 — a narrow range for Metuchen. That even rhythm groups Metuchen with places like Menlo Park Terrace, NJ, Fords, NJ and Iselin, NJ.
The cool-season window in Metuchen starts at mid-April, when nights stop freezing — think peas, lettuce, spinach, and radishes. Hold Metuchen's tender crops — tomatoes, peppers, basil — until 10-14 days past Metuchen's last frost. It shuts near mid-November, when freezes return to Metuchen and tender plants need cover. In Metuchen, low spots run 4-7°F colder than nearby slopes, nudging Metuchen's frost dates a week.
Similar climates: Menlo Park Terrace, NJ, Fords, NJ, Iselin, NJ, Keasbey, NJ, South Plainfield, NJ.
Frequently asked
- When does it freeze in Metuchen?
- Frost typically leaves Metuchen by mid-April and returns to Metuchen near mid-November.
- What is the rainy season in Metuchen?
- Rainfall in Metuchen peaks in December near 4.2 inches, out of about 44 inches annually.
- What is the warmest month in Metuchen?
- On average July tops the year in Metuchen at about 77°F.
- What is the coldest month in Metuchen?
- The coldest stretch in Metuchen falls in January, around 30°F on average.
- When can I start a vegetable garden in Metuchen?
- Around mid-April, start frost-hardy crops in Metuchen; tomatoes and basil belong a fortnight later.
- How many rainy days does Metuchen get?
- Metuchen records around 175 days of measurable precipitation annually.
- What hardiness zone is Metuchen?
- Since January in Metuchen averages 30°F, Metuchen's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Metuchen?
- Metuchen'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 Metuchen?
- See this week's day-by-day rain chances for Metuchen in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Metuchen?
- Current conditions for Metuchen and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Metuchen forecast updated?
- The Metuchen forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Metuchen?
- Today's sunrise and sunset times for Metuchen 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 Metuchen?
- The next few days in Metuchen's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The warm-summer humid continental climate of Metuchen, New Jersey carries typical Januarys near 30°F and Julys around 77°F — 47°F of seasonal travel.
Metuchen sees close to 44 inches of precipitation annually, falling across some 175 wet days.
From 40.5°N, Metuchen sees a 47°F seasonal swing that governs Metuchen's planting and frost windows.
Beaches near Metuchen
- Jacob Riis Beach25.7 mi
- Rockaway Beach27.8 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.
ZIP codes in Metuchen
- 08840