Bronx, New York Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Bronx weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——90°59°—
- FridayJun 5Overcast——94°62°+4°
- SaturdayJun 6Drizzle39%0.06″93°69°-1°
- SundayJun 7Heavy Drizzle39%0.07″89°70°-4°
- MondayJun 8Light Drizzle—0.02″74°61°-15°
- TuesdayJun 9Overcast——84°60°+10°
- WednesdayJun 10Overcast——89°65°+5°
Ozone at AQI 111 now. AQI up 8 over the last 6 hours (gradual rise). With UV 8.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 120 by mid-afternoon.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 111 now. With UV 8.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 120 by mid-afternoon.
- Present
- AQI 111
- UV peak
- 8.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 120
PM × Wind × Precip
PM2.5 at 6.9 µg/m³ (AQI 38) with a 1.00 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:26 AM
- Moonset
- 12:52 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Bronx at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, 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 — Bronx
SPC has placed Bronx in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.
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
July brings Bronx's warmest temperatures (~79°F mean) while January delivers the coldest (~34°F). August sees peak rainfall at 4.4 inches, with February recording the lowest at 2.9 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 34° | 3.3″ | 6 |
| February | 36° | 2.9″ | 6 |
| March | 43° | 4.0″ | 7 |
| April | 54° | 3.9″ | 6 |
| May | 64° | 3.6″ | 7 |
| June | 73° | 4.0″ | 7 |
| July | 79° | 4.3″ | 6 |
| August | 78° | 4.4″ | 6 |
| September | 71° | 3.9″ | 6 |
| October | 60° | 3.8″ | 5 |
| November | 49° | 3.1″ | 6 |
| December | 40° | 4.1″ | 7 |
Regional context
Bronx falls within a warm-summer humid continental climate region that extends across nearby cities. This climate group shares similar temperature ranges, seasonal patterns, and growing conditions.
Similar climates: New York, NY, Brooklyn, NY, Queens, NY, Manhattan, NY, Buffalo, NY.
Naturalist notes
Peak cherry blossom blooms occur throughout Bronx parks during late April, coinciding with the area's last spring frost period.
American robins begin their dawn chorus in early May, signaling the transition from spring migration to nesting season.
Frequently asked
- When does it freeze in Bronx?
- Bronx typically sees its last spring frost around mid-April, with the first fall frost returning around mid-November.
- What is the rainy season in Bronx?
- August stands as the wettest month with about 4.4 inches of rain on average, while the city receives roughly 45 inches annually.
- What is the warmest month in Bronx?
- July typically brings the warmest weather, averaging about 79°F.
- What is the coldest month in Bronx?
- January typically delivers the coldest temperatures, averaging about 34°F.
- When can I start a vegetable garden in Bronx?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-April, while warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does Bronx get?
- Bronx experiences about 75 rainy days per year on average.
- What hardiness zone is Bronx?
- Bronx's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool can provide the current zone designation using the city ZIP code.
Climate
Bronx, New York experiences a warm-summer humid continental climate zone. January temperatures hover near 34°F while July averages 79°F, creating a 45°F seasonal swing.
Throughout the year, Bronx receives about 45 inches of precipitation distributed across roughly 75 rainy days.
Weather patterns follow the city's latitude (40.9°N), proximity to large water bodies, and elevation. These factors determine what grows here, when frost occurs, and daily weather conditions.
Beaches near Bronx
- Rockaway Beach Beach18.5 mi
- Jacob Riis Beach19.4 mi
- Long Beach NY Beach21.1 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.