Newcastle, Wyoming Weather
Paintbrush crowns the ridges. Day 88 of spring. Read this microseason across nine climate regions →
Newcastle weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——73°41°—
- TuesdayJun 16Overcast——83°52°+10°
- WednesdayJun 17Overcast——71°51°-12°
- ThursdayJun 18Overcast——69°45°-2°
- FridayJun 19Overcast——81°50°+12°
- SaturdayJun 20Light Drizzle55%0.01″80°57°-1°
- SundayJun 21Light Drizzle55%0.02″62°57°-18°
AQI 35 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.4 µg/m³, PM10 at 12.8 µg/m³ — typical background levels with no transport signature.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 45 around 1 PM.
- Present
- AQI 43
- UV peak
- 7.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 45
PM × Wind × Precip
PM2.5 at 11.4 µg/m³, PM10 at 12.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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
- 5:14 AM
- Moonset
- 9:05 PM
- In sign
- ♋︎ Cancer
Paintbrush crowns the ridges
Newcastle at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: May 9 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Newcastle
- Mon73°41°3%
- Tue83°52°3%
- Wed71°51°4%
- Thu69°45°3%
- Fri81°50°1%
- Sat80°57°55%
- Sun62°57°55%
- Mon75°57°38%
- Tue85°60°27%
- Wed90°61°27%
- Thu92°64°20%
- Fri80°61°29%
- Sat73°57°31%
- Sun78°58°43%
- Mon90°59°42%
- Tue96°67°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 15, 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.
ZIP codes in Newcastle
- 82701