Lewiston, UT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewiston, a city in Cache County, Utah.
Today
88°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 88. West northwest wind 2 to 6 mph.
7-day forecast for Lewiston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Patchy Smoke | 2 to 6 mph WNW | 0% |
| Tonight | 48°F | Areas Of Smoke | 2 to 7 mph NNW | 0% |
| Wednesday | 91°F | Areas Of Smoke | 1 to 6 mph WNW | 0% |
| Wednesday Night | 52°F | Patchy Smoke then Mostly Clear | 2 to 6 mph NE | 0% |
| Thursday | 96°F | Sunny | 1 to 5 mph NW | 0% |
| Thursday Night | 57°F | Clear | 5 mph ESE | 0% |
| Friday | 99°F | Sunny | 1 to 6 mph N | 0% |
| Friday Night | 60°F | Mostly Clear | 2 to 7 mph NNE | 0% |
| Saturday | 99°F | Sunny | 1 to 6 mph NW | 0% |
| Saturday Night | 62°F | Mostly Clear | 2 to 8 mph NE | 0% |
| Sunday | 97°F | Mostly Sunny | 2 to 9 mph WSW | 3% |
| Sunday Night | 61°F | Mostly Clear | 2 to 9 mph ESE | 2% |
| Monday | 95°F | Mostly Sunny | 2 to 10 mph SW | 3% |
| Monday Night | 59°F | Partly Cloudy | 2 to 9 mph ESE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Lewiston (41.968, -111.886). Updated through the day.
Growing snapshot for Lewiston
Last spring frost
May 11
First fall frost
Oct 5
Growing season
143 days
Hardiness zone
6a
More local growing data for Lewiston: nearby ZIP 84320 weather · frost dates · planting calendar · Utah frost dates
Nearby towns & communities
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Benson
Cache
Clarkston
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Hyde Park
Hyrum
Logan
Mendon
Millville
Newton
Nibley
North Logan
Paradise
Peter
Providence
Richmond
River Heights
Smithfield
Trenton
Wellsville
Climate data from the nearest NOAA station, Richmond, Ut (3.9 mi from Lewiston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.