Roundup, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Roundup weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Rain31%0.09″73°50°—
- FridayJun 5Overcast——86°49°+13°
- SaturdayJun 6Light Drizzle18%—94°60°+8°
- SundayJun 7Light Drizzle35%0.03″72°48°-22°
- MondayJun 8Overcast22%—83°45°+11°
- TuesdayJun 9Overcast32%—86°57°+3°
- WednesdayJun 10Light Drizzle45%0.01″86°61°0°
AQI 27 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 7 AM.
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
- 6:08 AM
- Moonset
- 2:57 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Roundup at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: May 25 (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 — Roundup
SPC has placed Roundup in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.