Sidney, Montana Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Sidney weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast27%—77°50°—
- FridayJun 5Overcast13%—84°54°+7°
- SaturdayJun 6Drizzle56%—93°64°+9°
- SundayJun 7Overcast56%—82°57°-11°
- MondayJun 8Overcast36%—83°49°+1°
- TuesdayJun 9Overcast30%—97°68°+14°
- WednesdayJun 10Overcast32%—92°67°-5°
AQI 14 (Good), driven by Ozone. AQI down 12 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
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
- 5:56 AM
- Moonset
- 2:33 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Sidney at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: June 1 (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 — Sidney
SPC has placed Sidney 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.