Sand Coulee, Montana Weather
Thunderheads build by noon. Day 90 of spring. Read this microseason across nine climate regions →
Sand Coulee weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Heavy Drizzle53%0.07″67°50°—
- ThursdayJun 18Overcast23%—67°50°0°
- FridayJun 19Overcast——71°46°+4°
- SaturdayJun 20Drizzle16%—81°51°+10°
- SundayJun 21Overcast16%—61°48°-20°
- MondayJun 22Overcast——70°42°+9°
- TuesdayJun 23Mostly Clear——81°50°+11°
AQI 34 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 43 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 5.2 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 43
PM × Wind × Precip
PM2.5 at 4.6 µg/m³, PM10 at 5.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.81
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 8:00 AM
- Moonset
- 11:35 PM
- In sign
- ♌︎ Leo
Thunderheads build by noon
Sand Coulee at a glance
- Today vs. normal: 66°F — typical for the season
- Last frost: May 30 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Sand Coulee
- Wed67°50°53%
- Thu67°50°23%
- Fri71°46°1%
- Sat81°51°16%
- Sun61°48°16%
- Mon70°42°7%
- Tue81°50°3%
- Wed80°57°13%
- Thu81°53°16%
- Fri82°59°16%
- Sat86°59°14%
- Sun82°58°33%
- Mon84°57°32%
- Tue79°56°23%
- Wed89°61°23%
- Thu87°61°25%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 17, 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 — Sand Coulee
SPC has placed Sand Coulee in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- 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.
ZIP codes in Sand Coulee
- 59472