Casselman, Pennsylvania Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Casselman weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast54%—89°65°—
- SundayJul 5Overcast57%—87°68°-2°
- MondayJul 6Thunderstorm88%0.03″79°66°-8°
- TuesdayJul 7Drizzle57%—75°63°-4°
- WednesdayJul 8Light Drizzle18%0.04″74°64°-1°
- ThursdayJul 9Light Drizzle21%—82°61°+8°
- FridayJul 10Light Drizzle68%0.04″77°66°-5°
AQI 71 (Moderate), driven by Ozone. AQI up 16 in the last 6 hours — air quality is degrading. Ozone at AQI 75 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 75 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 75
- UV peak
- 2.0 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 75
PM × Wind × Precip
PM2.5 at 6.7 µg/m³, PM10 at 7.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- 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
- 11:10 PM
- Moonset
- 10:20 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Casselman at a glance
- Today vs. normal: 15°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.
16-Day Forecast — Casselman
- Sat89°65°54%
- Sun87°68°57%
- Mon79°66°88%
- Tue75°63°57%
- Wed74°64°18%
- Thu82°61°21%
- Fri77°66°68%
- Sat77°61°47%
- Sun74°57°31%
- Mon73°56°29%
- Tue75°53°21%
- Wed79°56°42%
- Thu80°58°45%
- Fri75°61°50%
- Sat78°67°55%
- Sun76°66°52%
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 — Casselman
SPC has placed Casselman in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal 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 Casselman
- 15557