Harrison Lake, Indiana Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harrison Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast27%—89°69°—
- SundayJul 5Overcast29%—87°71°-2°
- MondayJul 6Overcast35%—86°69°-1°
- TuesdayJul 7Overcast——83°63°-3°
- WednesdayJul 8Light Drizzle——89°64°+6°
- ThursdayJul 9Light Drizzle32%—88°65°-1°
- FridayJul 10Light Drizzle50%—82°72°-6°
AQI 41 (Good), driven by Ozone. Ozone at AQI 63 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 50 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 63 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 50 around 1 PM.
- Present
- AQI 63
- UV peak
- 6.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 50
PM × Wind × Precip
PM2.5 at 13.8 µg/m³, PM10 at 16.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.82
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:38 PM
- Moonset
- 10:50 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Harrison Lake at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Harrison Lake
- Sat89°69°27%
- Sun87°71°29%
- Mon86°69°35%
- Tue83°63°7%
- Wed89°64°9%
- Thu88°65°32%
- Fri82°72°50%
- Sat82°69°32%
- Sun77°61°12%
- Mon72°57°13%
- Tue77°59°12%
- Wed83°61°14%
- Thu84°65°16%
- Fri86°70°23%
- Sat87°68°23%
- Sun88°71°40%
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 — Harrison Lake
SPC has placed Harrison Lake in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Harrison Lake
- 47201