Princeton, Indiana Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Princeton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Showers45%0.11″91°71°—
- SundayJul 5Overcast28%—88°70°-3°
- MondayJul 6Overcast——84°70°-4°
- TuesdayJul 7Clear——82°66°-2°
- WednesdayJul 8Mostly Clear——85°64°+3°
- ThursdayJul 9Thunderstorm40%—88°72°+3°
- FridayJul 10T-storm w/ Hail50%—86°71°-2°
AQI 54 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.5 µg/m³, PM10 at 8.1 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 7.5 µg/m³, PM10 at 8.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- 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
- 11:07 PM
- Moonset
- 11:03 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Princeton at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: April 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 47670
16-Day Forecast — Princeton
- Sat91°71°45%
- Sun88°70°28%
- Mon84°70°9%
- Tue82°66°4%
- Wed85°64°5%
- Thu88°72°40%
- Fri86°71°50%
- Sat82°68°34%
- Sun78°64°22%
- Mon81°60°8%
- Tue84°62°5%
- Wed86°70°22%
- Thu83°66°15%
- Fri81°69°32%
- Sat90°74°29%
- Sun91°77°32%
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 — Princeton
SPC has placed Princeton 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 Princeton
- 47670