Carrboro, North Carolina Weather
Fireflies pulse through the magnolias. Day 78 of spring. Read this microseason across nine climate regions →
Carrboro weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Clear——90°57°—
- SaturdayJun 6Overcast——93°68°+3°
- SundayJun 7Overcast24%—93°65°0°
- MondayJun 8Heavy Showers31%0.95″89°68°-4°
- TuesdayJun 9Heavy Drizzle10%0.04″81°68°-8°
- WednesdayJun 10Light Drizzle17%0.01″77°68°-4°
- ThursdayJun 11Overcast26%—83°68°+6°
AQI 46 (Good), driven by PM2.5. AQI down 34 over the last 6 hours — air quality is improving sharply. PM2.5 at 6.8 µg/m³ (AQI 38) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 6.8 µg/m³ (AQI 38) with a 0.94 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:05 AM
- Moonset
- 2:30 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Carrboro at a glance
- Today vs. normal: 20°F below the seasonal normal for this latitude
- Last frost: March 23 (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 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 — Carrboro
SPC has placed Carrboro 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 | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Carrboro's warmest month is July (~78°F mean) and its coldest is January (~38°F). Rainfall peaks in June (5.2 inches) and bottoms out in February (2.9 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 38° | 4.0″ | 6 |
| February | 41° | 2.9″ | 6 |
| March | 49° | 4.5″ | 8 |
| April | 58° | 3.7″ | 7 |
| May | 66° | 3.8″ | 7 |
| June | 74° | 5.2″ | 7 |
| July | 78° | 4.2″ | 7 |
| August | 76° | 5.2″ | 7 |
| September | 70° | 4.7″ | 5 |
| October | 59° | 3.4″ | 5 |
| November | 49° | 3.6″ | 5 |
| December | 42° | 3.3″ | 6 |
Regional context
Carrboro sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Charlotte, NC, Raleigh, NC, Winston-Salem, NC, Durham, NC, Greensboro, NC.
Frequently asked
- When does it freeze in Carrboro?
- Carrboro's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Carrboro?
- June is the wettest month with about 5.2 inches of rain on average; the city receives roughly 49 inches annually.
- What is the warmest month in Carrboro?
- July is typically warmest, averaging about 78°F.
- What is the coldest month in Carrboro?
- January is typically coldest, averaging about 38°F.
- When can I start a vegetable garden in Carrboro?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Carrboro get?
- Carrboro averages about 77 rainy days per year.
- What hardiness zone is Carrboro?
- Carrboro's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Carrboro, North Carolina sits in a humid subtropical climate zone. January means hover near 38°F while July averages 78°F — a 40°F seasonal swing.
Across the year, Carrboro receives about 49 inches of precipitation spread over roughly 77 rainy days.
The rhythm of the year is set by latitude (35.9°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.