Cascade Colony, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Cascade Colony weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast15%—67°52°—
- FridayJun 5Overcast——76°49°+9°
- SaturdayJun 6Heavy Drizzle27%—74°50°-2°
- SundayJun 7Drizzle35%0.07″55°43°-19°
- MondayJun 8Overcast13%—70°40°+15°
- TuesdayJun 9Light Drizzle38%—71°46°+1°
- WednesdayJun 10Drizzle49%0.29″52°49°-19°
Ozone at AQI 43. AQI down 7 over the last 6 hours (steady decline since this morning). Overcast through the UV peak window (cloud cover ~77%) — 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 43. Overcast through the UV peak window (cloud cover ~77%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 6.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 18
PM × Wind × Precip
PM2.5/PM10 ratio 0.70 with 13 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.70
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- transport
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:26 AM
- Moonset
- 3:07 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Cascade Colony at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: May 31 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Cascade Colony
SPC has placed Cascade Colony in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.