McKnightstown, Pennsylvania Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
McKnightstown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle30%0.03″97°75°—
- SundayJul 5Overcast44%—92°72°-5°
- MondayJul 6Thunderstorm88%—82°68°-10°
- TuesdayJul 7Light Showers88%0.02″71°66°-11°
- WednesdayJul 8Light Drizzle26%0.04″69°63°-2°
- ThursdayJul 9Overcast11%—91°65°+22°
- FridayJul 10Overcast49%—85°69°-6°
AQI 81 (Moderate), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 56. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
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 56. Overcast through the UV peak window (cloud cover ~99%) — afternoon ozone should stay flat.
- Present
- AQI 56
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.5 µg/m³, PM10 to 6.8 µg/m³.
- PM2.5/PM10
- 0.96
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:26 PM
- Moonset
- 11:19 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
McKnightstown at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 17343
16-Day Forecast — McKnightstown
- Sat97°75°30%
- Sun92°72°44%
- Mon82°68°88%
- Tue71°66°88%
- Wed69°63°26%
- Thu91°65°11%
- Fri85°69°49%
- Sat84°65°29%
- Sun80°60°25%
- Mon83°57°18%
- Tue87°61°18%
- Wed83°65°39%
- Thu85°61°42%
- Fri84°62°45%
- Sat88°68°43%
- Sun81°69°42%
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 — McKnightstown
SPC has placed McKnightstown in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 McKnightstown
- 17307
- 17343