Outlook, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Outlook weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Rain25%0.11″73°48°—
- FridayJun 5Drizzle14%0.02″80°52°+7°
- SaturdayJun 6Showers68%0.41″93°60°+13°
- SundayJun 7Light Showers68%0.01″68°52°-25°
- MondayJun 8Overcast28%—76°46°+8°
- TuesdayJun 9Overcast43%—82°59°+6°
- WednesdayJun 10Drizzle31%—76°62°-6°
Ozone at AQI 34 now. AQI flat over the last 6 hours (within ±3 points). With UV 5.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 16 by mid-afternoon.
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 5.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 16 by mid-afternoon.
- Present
- AQI 34
- UV peak
- 5.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 5.3 µg/m³ (AQI 29) with a 0.91 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- calm
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:04 AM
- Moonset
- 2:30 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Outlook at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: June 8 (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 — Outlook
SPC has placed Outlook in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3SLGTSlight Risk
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.