Dennis, Mississippi Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Dennis weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle23%0.03″91°71°—
- SundayJul 5Overcast17%—90°74°-1°
- MondayJul 6T-storm w/ Hail51%—89°71°-1°
- TuesdayJul 7Overcast16%—89°70°0°
- WednesdayJul 8Overcast10%—93°67°+4°
- ThursdayJul 9Thunderstorm21%—91°69°-2°
- FridayJul 10Overcast36%—95°72°+4°
AQI 62 (Moderate), driven by PM2.5. AQI up 19 in the last 6 hours — air quality is degrading. PM2.5 at 12.9 µg/m³, PM10 at 15.5 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
Ozone × UV × Sky
Ozone at AQI 49 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 49
- UV peak
- 0.6 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 49
PM × Wind × Precip
PM2.5 at 12.9 µg/m³, PM10 at 15.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.83
- Wind
- calm
- 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
- 10:40 PM
- Moonset
- 10:04 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Dennis at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: March 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 38838
16-Day Forecast — Dennis
- Sat91°71°23%
- Sun90°74°17%
- Mon89°71°51%
- Tue89°70°16%
- Wed93°67°10%
- Thu91°69°21%
- Fri95°72°36%
- Sat83°68°50%
- Sun86°66°31%
- Mon84°59°14%
- Tue84°61°13%
- Wed86°63°32%
- Thu80°68°42%
- Fri90°69°61%
- Sat83°70°45%
- Sun87°69°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Dennis
SPC has placed Dennis 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 Dennis
- 38838