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Alton, UT Weather Forecast

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Alton, UT Weather Forecast

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Alton UT weather - Clear - 82°F
Clear
82°F
Updated 5:36 pm
Feels Like 65°F
Humidity 26%
Wind SSE 8 mph
Barometer  30.42 in
Dew Point 44°F
Alton UT weather - Clear - 28°C
Clear
28°C
Updated 5:36 pm
Feels Like 19°C
Humidity 26%
Wind SSE 13 km/h
Barometer  103 kPa
Dew Point 7°C
WX Settings

Alton Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY THURSDAY THURSDAY NIGHT
Alton, UT Weather - Tonight Chance Of T-Storm Alton, UT Weather - Saturday Chance Of T-Storm Alton, UT Weather - Saturday Night Partly Cloudy Alton, UT Weather - Sunday Partly Cloudy Alton, UT Weather - Sunday Night Chance Of T-Storm Alton, UT Weather - Monday Chance Of T-Storm Alton, UT Weather - Monday Night Partly Cloudy Alton, UT Weather - Tuesday Chance Of T-Storm Alton, UT Weather - Tuesday Night Partly Cloudy Alton, UT Weather - Wednesday Mostly Clear Alton, UT Weather - Thursday Mostly Clear Alton, UT Weather - Thursday Night Partly Cloudy
Chance of T-Storm Chance of T-Storm Partly Cloudy Partly Cloudy Chance of T-Storm Chance of T-Storm Partly Cloudy Chance of T-Storm Partly Cloudy Mostly Clear Mostly Clear Partly Cloudy
Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 71°FHi: 22°C
 Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 70°FHi: 21°C
 Lo: 55°FLo: 13°C Hi: 71°FHi: 22°C
Lo: 55°FLo: 13°C		 Hi: 71°FHi: 22°C
Lo: 55°FLo: 13°C		 Hi: 70°FHi: 21°C
Lo: 55°FLo: 13°C
POP: 40% POP: 20% POP: 20% POP: 20% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 105 PM MDT Fri Aug 21 2026 Alton, UT Weather - WeatherWorld.com

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Alton Forecast Discussion

Issued: 145 PM MDT Fri Aug 21 2026

Key Messages

.KEY MESSAGES, Issued 1018 PM MDT Thu Aug 20 2026...
  • Hot temperatures will persist over the valleys of northern Utah Friday, with low temperatures in the mid to upper 70s providing little overnight recovery.
  • Monsoonal moisture will surge into Utah and southwest Wyoming Friday and Saturday, bringing an increased threat of thunderstorms producing heavy rainfall and flash flooding.
  • Moisture is expected to decrease from Sunday through Tuesday, bringing less coverage of showers and thunde...