Big Horn, Wyoming Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Big Horn weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——74°51°—
- ThursdayJun 4Overcast14%—71°53°-3°
- FridayJun 5Overcast——85°53°+14°
- SaturdayJun 6Light Drizzle11%—95°63°+10°
- SundayJun 7Light Showers63%0.04″72°57°-23°
- MondayJun 8Overcast54%—83°50°+11°
- TuesdayJun 9Overcast21%—81°63°-2°
Ozone at AQI 38 now. AQI up 7 over the last 6 hours (gradual rise). With UV 0.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 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 38 now. With UV 0.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 6 by mid-afternoon.
- Present
- AQI 38
- UV peak
- 0.1 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 6
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
- 5:55 AM
- Moonset
- 2:58 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Big Horn at a glance
- Today vs. normal: 68°F — typical for the season
- Last frost: May 14 (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 — Big Horn
SPC has placed Big Horn 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.