Leonia, New Jersey Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Leonia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Heavy Showers67%0.47″89°73°—
- MondayJul 6Heavy Rain90%0.66″74°69°-15°
- TuesdayJul 7Drizzle83%0.01″72°64°-2°
- WednesdayJul 8Overcast18%—81°64°+9°
- ThursdayJul 9Overcast18%—84°68°+3°
- FridayJul 10Light Drizzle44%—86°71°+2°
- SaturdayJul 11Overcast29%—85°68°-1°
AQI 44 (Good), driven by PM2.5. AQI down 17 over the last 6 hours — air quality is improving sharply. PM2.5 at 8.2 µg/m³, PM10 at 8.3 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 8.2 µg/m³, PM10 at 8.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.99
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:13 PM
- Moonset
- 11:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Leonia at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 07605
15-Day Forecast — Leonia
- Sun89°73°67%
- Mon74°69°90%
- Tue72°64°83%
- Wed81°64°18%
- Thu84°68°18%
- Fri86°71°44%
- Sat85°68°29%
- Sun83°66°21%
- Mon73°62°18%
- Tue87°65°21%
- Wed85°70°21%
- Thu88°71°29%
- Fri84°72°28%
- Sat84°70°32%
- Sun88°72°33%
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 — Leonia
SPC has placed Leonia 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.
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
Leonia's warmest month is July (~75°F mean) and its coldest is January (~29°F). Rainfall peaks in December (4.2 inches) and bottoms out in February (2.9 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 29° | 3.5″ | 13 |
| February | 31° | 2.9″ | 13 |
| March | 39° | 3.7″ | 15 |
| April | 50° | 4.0″ | 17 |
| May | 59° | 3.9″ | 18 |
| June | 69° | 3.8″ | 16 |
| July | 75° | 3.4″ | 16 |
| August | 74° | 4.1″ | 17 |
| September | 67° | 3.4″ | 13 |
| October | 57° | 3.2″ | 11 |
| November | 43° | 3.8″ | 13 |
| December | 34° | 4.2″ | 13 |
Regional context
In Leonia, NOAA NCEI 1991-2020 normals put January near 29°F and July near 75°F — a 46°F seasonal arc — with about 43.9 inches of precipitation over 175 rainy or snowy days.
No season owns Leonia's rain: December reaches 4.2 inches across 13.4 days and February keeps 2.9 inches on 12.8, an even spread through Leonia's year. It is a balanced pattern Leonia shares with places like Palisades Park, NJ, Fort Lee, NJ and Ridgefield Park, NJ.
Around mid-April, Leonia sheds its freezing nights — kale, peas, spinach, and parsnips go into Leonia's beds. Leonia's heat-lovers — tomatoes, peppers, squash — hold off until Leonia's frost risk clears, 10-14 days on. By mid-November, frost is back in Leonia — protect or harvest anything tender. Leonia's low ground holds frost later into spring than Leonia's benches, which run 3-5 days ahead.
Similar climates: Palisades Park, NJ, Fort Lee, NJ, Ridgefield Park, NJ, Englewood, NJ, Bogota, NJ.
Frequently asked
- When does it freeze in Leonia?
- Leonia's last spring frost lands near mid-April, and in Leonia the first fall frost follows around mid-November.
- What is the rainy season in Leonia?
- December is the wettest month in Leonia, about 4.2 inches on average; the year totals roughly 44 inches.
- What is the warmest month in Leonia?
- July is Leonia's warmest month, averaging about 75°F.
- What is the coldest month in Leonia?
- Leonia bottoms out in January, with a mean near 29°F.
- When can I start a vegetable garden in Leonia?
- Leonia's last frost (mid-April) cues hardy greens; in Leonia, hold heat-lovers two weeks past.
- How many rainy days does Leonia get?
- Leonia averages about 175 days with measurable rain or snow each year.
- What hardiness zone is Leonia?
- Leonia sits in the USDA zone set by January lows near 29°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Leonia?
- Leonia'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 Leonia?
- See this week's day-by-day rain chances for Leonia in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Leonia?
- Current conditions for Leonia and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Leonia forecast updated?
- The Leonia forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Leonia?
- Today's sunrise and sunset times for Leonia 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 Leonia?
- The next few days in Leonia's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Leonia, New Jersey has a warm-summer humid continental climate: January averages roughly 29°F, July about 75°F, 46°F between them.
Across the year, Leonia collects about 44 inches of precipitation over roughly 175 days with measurable rain or snow.
Latitude 40.9°N gives Leonia its 46°F swing, and with it the rhythm of Leonia's growing season.
Beaches near Leonia
- Rockaway Beach21 mi
- Jacob Riis Beach21.3 mi
- Long Beach NY25.8 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 Leonia
- 07605