Roberts, Montana Weather
Pikas hayfeeding in granite peaks. Day 76 of spring. Read this microseason across nine climate regions →
Roberts weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——71°44°—
- ThursdayJun 4Overcast18%—69°49°-2°
- FridayJun 5Clear——81°49°+12°
- SaturdayJun 6Overcast——90°58°+9°
- SundayJun 7Light Drizzle42%—70°52°-20°
- MondayJun 8Drizzle19%—78°43°+8°
- TuesdayJun 9Overcast14%—70°52°-8°
Ozone at AQI 48 now. AQI flat over the last 6 hours (within ±3 points). With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 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 48 now. With UV 7.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 by mid-afternoon.
- Present
- AQI 48
- UV peak
- 7.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5/PM10 ratio 0.68 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.68
- Wind
- light
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:33 AM
- Moonset
- 1:57 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Roberts at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 18 (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 3, 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 — Roberts
SPC has placed Roberts in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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.