McComb, Mississippi Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
McComb weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Showers57%4.9″92°73°—
- SundayJul 5Heavy Rain36%0.65″86°73°-6°
- MondayJul 6Light Drizzle57%—88°72°+2°
- TuesdayJul 7Thunderstorm47%—90°72°+2°
- WednesdayJul 8T-storm w/ Hail29%—89°72°-1°
- ThursdayJul 9Partly Cloudy30%—94°71°+5°
- FridayJul 10Mostly Clear17%—94°74°0°
AQI 62 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 16.7 µg/m³, PM10 at 19.0 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 16.7 µg/m³, PM10 at 19.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- Wind
- light
- Recent rain
- 1h 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
- 11:14 PM
- Moonset
- 11:16 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
McComb at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: February 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 39648
16-Day Forecast — McComb
- Sat92°73°57%
- Sun86°73°36%
- Mon88°72°57%
- Tue90°72°47%
- Wed89°72°29%
- Thu94°71°30%
- Fri94°74°17%
- Sat95°72°31%
- Sun85°71°53%
- Mon79°71°49%
- Tue83°71°29%
- Wed87°70°26%
- Thu87°71°35%
- Fri89°72°50%
- Sat91°71°58%
- Sun94°72°52%
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 — McComb
SPC has placed McComb in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in McComb
- 39648
- 39649