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 4Rain38%0.14″91°65°—
- SundayJul 5Heavy Rain79%0.65″86°68°-5°
- MondayJul 6T-storm w/ Hail86%0.13″76°64°-10°
- TuesdayJul 7Light Drizzle37%—76°62°0°
- WednesdayJul 8Light Drizzle20%—79°57°+3°
- ThursdayJul 9Overcast50%—84°64°+5°
- FridayJul 10Light Drizzle53%—79°65°-5°
AQI 58 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.93 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
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 3.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 17 around 1 PM.
- Present
- AQI 34
- UV peak
- 3.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 17
PM × Wind × Precip
PM2.5 at 14.7 µg/m³ (AQI 61) with a 0.93 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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: 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.
16-Day Forecast — Casselman
- Sat91°65°38%
- Sun86°68°79%
- Mon76°64°86%
- Tue76°62°37%
- Wed79°57°20%
- Thu84°64°50%
- Fri79°65°53%
- Sat80°66°47%
- Sun76°63°33%
- Mon71°60°19%
- Tue69°59°22%
- Wed81°63°29%
- Thu88°66°39%
- Fri87°68°33%
- Sat77°68°29%
- Sun81°65°26%
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