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Washington, UT 84780 Weather
Current conditions
Observed at St George Regional Airport · 23 min ago
Forecast
10-day-
Tonight
Showers and thunderstorms. Mostly cloudy. Low around 61, with temperatures rising to around 63 overnight. Northeast wind 8 to 14 mph. Chance of precipitation is 80%.
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Thursday
Showers and thunderstorms. Cloudy. High near 71, with temperatures falling to around 64 in the afternoon. South wind 6 to 12 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
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Thursday Night
Showers and thunderstorms before 3am, then rain likely. Mostly cloudy, with a low around 53. South southwest wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
National Weather Service forecast updated 8 hrs ago.
Hourly
Hourly forecast- Now67°82%
- 9 PM67°78%
- 10 PM66°78%
- 11 PM65°78%
- Thu12 AM64°80%
- 1 AM63°80%
- 2 AM63°80%
- 3 AM63°76%
- 4 AM63°76%
- 5 AM63°76%
- 6 AM62°72%
- 7 AM61°72%
- 8 AM61°72%
- 9 AM63°82%
- 10 AM67°82%
- 11 AM68°82%
- 12 PM69°91%
- 1 PM70°91%
- 2 PM69°91%
- 3 PM68°91%
- 4 PM67°91%
- 5 PM64°91%
- 6 PM63°88%
- 7 PM62°88%
10-day forecast
Details- TonightOct 21Showers And Thunderstorms82%61°
- ThuOct 22Showers And Thunderstorms91%53°71°
- FriOct 23Mostly Sunny50°64°
- SatOct 24Sunny49°65°
- SunOct 25Sunny50°68°
- MonOct 26Sunny51°71°
- TueOct 27Sunny50°70°
- WedOct 28Mostly Sunny70°
- ThuOct 29Partly cloudy49°71°
- FriOct 30Cloudy56°72°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedGood
- ThuGood
- FriGood
Hurricane, UT reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlySt. George, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Saint George 8 km
- Hurricane 20 km
- Ivins 16 km
- Santa Clara 13 km
- Colorado City 50 km
- LaVerkin 22 km
- Hildale 50 km
Forecasters' discussion
From the National Weather Service office in SLC, issued 22 hrs ago
Key Messages
- Widespread precipitation returns Wednesday morning across southern Utah, with coverage expanding northward through Friday. Many areas will see precipitation accumulations between 0.5-2" through this period, with local totals in excess of 3" possible.
- The heavy rain will bring a threat of flash flooding to southern and central Utah, and there is a Slight Risk of Excessive Rainfall across southern Utah Wednesday and across southern through east-central Utah Thursday.
- A few strong to severe thunderstorms may be capable of producing gusty winds and hail across southern Utah on Wednesday and statewide on Thursday, with a 2% chance of a tornado. A Marginal Risk for severe thunderstorms is in place on Wednesday across far southern Utah, southern through west-central Utah on Thursday.
- The late week storm will also bring accumulating snowfall to the high terrain across northern and central Utah on Friday, with 2-6" possible mainly above 9000 feet. Locally higher amounts are possible in favored locations.
Discussion
The large-scale pattern this evening consists of a closed low spinning off the central California coast while Utah remains under a southerly flow ahead of it. An upper jet rounding the base of the low and punching through Arizona this evening is helping to spread tropical moisture northward. Across Utah, PWATs currently range from 0.6-0.9 inches, which is already close to the 99th percentile of climatology. Increased moisture advection will only push these values higher over the next couple of days.
As the jet arrives over Utah, increasing upper diffluence may lead to some isolated shower activity tonight, mainly over northwest Utah. As the deeper moisture arrives after 10z, expect precipitation activity to start increasing across southern Utah. This precipitation will become more widespread across southern and central Utah through the day Wednesday. Models indicate a brief decrease in precipitation Wednesday night before increasing again areawide for Thursday. Areas of moderate to heavy precipitation is expected Wednesday and Thursday, and will be aided in part by potentially strong to severe convection as suggested by hi-res models. If instability does not become inhibited too much by cloud cover, there will be plenty of shear (40-55+ kt of 0-6km shear) and low-level helicity to work with across southern Utah on Wednesday and across a significant portion of the forecast area on Thursday for a few of the stronger storms to produce strong winds, hail, and even an outside chance of a tornado. There is currently a Marginal Risk for Severe Storms across southern Utah on Wednesday and across southern through weest-central Utah on Thursday. Additionally, with the heavy rain, there is also a Slight Risk of Excessive Rainfall across southern Utah on Wednesday and across southern through east-central Utah on Thursday. Also on Thursday, a Marginal Risk for Excessive Rainfall extends through the remainder of Utah. A Flood Watch is in effect across southern through east-central Utah Wednesday through Thursday as a result. Latest NBM continues to indicate widespread 1 to greater than 2.5 inches of QPF across southern through east-central Utah Wednesday through Thursday, with 75th percentile amounts exceeding 3 inches near Brian Head and Boulder Mountain.
On Friday, the upper low is expected to lift across northern Utah while a trailing wave rotating around the low swings across the desert southwest. The track of the low across northern Utah will keep precipitation confined more to the north on Friday, while cooler air arrives into the area (H7 temperatures down to around -3C Friday through Saturday night). This will bring snow levels as low as 7000-7500 feet, with accumulating snow of around 2-6 inches forecast above around 9000 feet, mainly across the Wasatch and Uinta Mountains.
The trailing wave swinging around Arizona now looks to redevelop into a closed low which will then linger over the area. As such, there is now increasing likelihood for cool and unsettled weather to remain in place through the weekend. Thereafter, high pressure looks to build into the area early next week.
Aviation
KSLC...The SLC terminal will see VFR conditions through the overnight hours. Winds are expected to remain southerly tonight and through the day tomorrow, becoming occasionally gusty during the afternoon. There is a 30 percent chance that showers will impact the terminal during the late afternoon and early evening, with the most likely impact being gusty and erratic winds.
REST OF UTAH AND SOUTHWEST WYOMING...The airspace will see VFR conditions through the evening with increasing clouds over southern Utah overnight. Showers and thunderstorms will increase in coverage over southern Utah throughout the morning, spreading into some northern portions of the airspace during the afternoon. Any storms that develop will have the potential of producing gusty and erratic winds, lightning, and brief mountain obscurations.
Slc Watches
UT...Flood Watch from 6 AM MDT Wednesday through Thursday evening for UTZ117-123>131.
Flood Watch from Wednesday afternoon through Thursday evening for UTZ120-121.
WY...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.