Newcastle, Utah Weather
The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →
Newcastle weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——92°59°—
- SundayJul 5Overcast——88°65°-4°
- MondayJul 6Overcast——92°73°+4°
- TuesdayJul 7Clear——94°67°+2°
- WednesdayJul 8Clear——96°70°+2°
- ThursdayJul 9Clear——98°65°+2°
- FridayJul 10Clear——99°67°+1°
AQI 79 (Moderate), driven by Ozone. AQI up 30 in the last 6 hours — air quality is degrading. Ozone at AQI 66. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 66. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 66
- UV peak
- 0.7 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:52 PM
- Moonset
- 11:52 AM
- In sign
- ♓︎ Pisces
The monsoon settles in
Newcastle at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 84756
16-Day Forecast — Newcastle
- Sat92°59°0%
- Sun88°65°3%
- Mon92°73°1%
- Tue94°67°0%
- Wed96°70°0%
- Thu98°65°0%
- Fri99°67°0%
- Sat102°68°1%
- Sun101°73°4%
- Mon105°74°14%
- Tue103°73°15%
- Wed106°74°18%
- Thu104°71°25%
- Fri100°75°26%
- Sat99°74°19%
- Sun101°72°26%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Newcastle
SPC includes Newcastle in the general thunderstorm area day after tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
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 Newcastle
- 84756