Harrisburg, Arkansas Weather
Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →
Harrisburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Mostly Clear——83°65°—
- WednesdayJun 17Thunderstorm——89°70°+6°
- ThursdayJun 18Thunderstorm60%—91°73°+2°
- FridayJun 19Light Drizzle50%—81°69°-10°
- SaturdayJun 20Overcast38%—86°67°+5°
- SundayJun 21Thunderstorm43%0.01″88°71°+2°
- MondayJun 22Heavy Drizzle66%—81°69°-7°
AQI 49 (Good), driven by Ozone. AQI up 5 over the last 6 hours (gradual rise). Ozone at AQI 34 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
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 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 34
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 4.9 µg/m³, PM10 at 5.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:17 AM
- Moonset
- 10:25 PM
- In sign
- ♋︎ Cancer
Heat settles and the rain begins
Harrisburg at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: March 20 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Harrisburg
- Tue83°65°6%
- Wed89°71°4%
- Thu91°73°60%
- Fri81°69°50%
- Sat86°67°38%
- Sun88°71°43%
- Mon81°69°66%
- Tue83°70°36%
- Wed81°70°26%
- Thu87°68°14%
- Fri93°72°14%
- Sat92°76°27%
- Sun89°73°30%
- Mon91°73°38%
- Tue92°74°39%
- Wed88°74°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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 — Harrisburg
SPC has placed Harrisburg in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal 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.
ZIP codes in Harrisburg
- 72432